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Windows Analysis Report
pdfskills.exe

Overview

General Information

Sample name:	pdfskills.exe
Analysis ID:	1556594
MD5:	3fed63ba4527b108772f0b932d48a875
SHA1:	66bce2303a39e2f676502e5c77d3d3746730f33b
SHA256:	2dc119979db7af6999e4e003cdd827987f5d60035049a8f9998a66eda1864453
Infos:

Detection

Score:	4
Range:	0 - 100
Whitelisted:	false
Confidence:	20%

Signatures

Allocates memory with a write watch (potentially for evading sandboxes)

Binary contains a suspicious time stamp

Contains long sleeps (>= 3 min)

Detected potential crypto function

Enables debug privileges

Found a high number of Window / User specific system calls (may be a loop to detect user behavior)

HTTP GET or POST without a user agent

JA3 SSL client fingerprint seen in connection with other malware

May sleep (evasive loops) to hinder dynamic analysis

PE file does not import any functions

Queries the volume information (name, serial number etc) of a device

Sample file is different than original file name gathered from version info

Uses code obfuscation techniques (call, push, ret)

Classification

Process Tree

System is w10x64

pdfskills.exe (PID: 8064 cmdline: "C:\Users\user\Desktop\pdfskills.exe" MD5: 3FED63BA4527B108772F0B932D48A875)

cleanup

Malware Configuration

⊘No configs have been found

Yara Signatures

⊘No yara matches

Sigma Signatures

⊘No Sigma rule has matched

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

• Compliance
• Networking
• System Summary
• Data Obfuscation
• Hooking and other Techniques for Hiding and Protection
• Malware Analysis System Evasion
• Anti Debugging
• Language, Device and Operating System Detection

Click to jump to signature section

Show All Signature Results

There are no malicious signatures, click here to show all signatures.

Source: pdfskills.exe

Static PE information: certificate valid

Source: unknown

HTTPS traffic detected: 198.71.59.132:443 -> 192.168.2.10:49721 version: TLS 1.2

Source: pdfskills.exe

Static PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE

Source: global traffic

HTTP traffic detected: POST /v6 HTTP/1.1Content-Type: text/plain; charset=utf-8Host: val.skillcli.comContent-Length: 88Expect: 100-continueConnection: Keep-Alive

Source: Joe Sandbox View

JA3 fingerprint: 3b5074b1b5d032e5620f69f9f700ff0e

Source: unknown

UDP traffic detected without corresponding DNS query: 1.1.1.1

Source: global traffic

DNS traffic detected: DNS query: val.skillcli.com

Source: unknown

HTTP traffic detected: POST /v6 HTTP/1.1Content-Type: text/plain; charset=utf-8Host: val.skillcli.comContent-Length: 88Expect: 100-continueConnection: Keep-Alive

Source: pdfskills.exe	String found in binary or memory: http://cacerts.digicert.com/DigiCertAssuredIDRootCA.crt0E
Source: pdfskills.exe	String found in binary or memory: http://cacerts.digicert.com/DigiCertTrustedG4RSA4096SHA256TimeStampingCA.crt0
Source: pdfskills.exe	String found in binary or memory: http://cacerts.digicert.com/DigiCertTrustedRootG4.crt0C
Source: pdfskills.exe	String found in binary or memory: http://crl.globalsign.com/codesigningrootr45.crl0U
Source: pdfskills.exe	String found in binary or memory: http://crl.globalsign.com/gsgccr45evcodesignca2020.crl0
Source: pdfskills.exe	String found in binary or memory: http://crl.globalsign.com/root-r3.crl0G
Source: pdfskills.exe	String found in binary or memory: http://crl3.digicert.com/DigiCertAssuredIDRootCA.crl0
Source: pdfskills.exe	String found in binary or memory: http://crl3.digicert.com/DigiCertTrustedG4RSA4096SHA256TimeStampingCA.crl0
Source: pdfskills.exe	String found in binary or memory: http://crl3.digicert.com/DigiCertTrustedRootG4.crl0
Source: pdfskills.exe, 00000000.00000002.3152168133.000001F800795000.00000004.00000800.00020000.00000000.sdmp, pdfskills.exe, 00000000.00000002.3152168133.000001F8005EE000.00000004.00000800.00020000.00000000.sdmp, pdfskills.exe, 00000000.00000002.3152168133.000001F800422000.00000004.00000800.00020000.00000000.sdmp	String found in binary or memory: http://defaultcontainer/Belongings/dmsans-bold.ttf
Source: pdfskills.exe, 00000000.00000002.3152168133.000001F800795000.00000004.00000800.00020000.00000000.sdmp, pdfskills.exe, 00000000.00000002.3152168133.000001F800422000.00000004.00000800.00020000.00000000.sdmp	String found in binary or memory: http://defaultcontainer/Belongings/dmsans-regular.ttf
Source: pdfskills.exe	String found in binary or memory: http://ocsp.digicert.com0A
Source: pdfskills.exe	String found in binary or memory: http://ocsp.digicert.com0C
Source: pdfskills.exe	String found in binary or memory: http://ocsp.digicert.com0X
Source: pdfskills.exe	String found in binary or memory: http://ocsp.globalsign.com/codesigningrootr450F
Source: pdfskills.exe	String found in binary or memory: http://ocsp.globalsign.com/gsgccr45evcodesignca20200U
Source: pdfskills.exe	String found in binary or memory: http://ocsp.globalsign.com/rootr30;
Source: pdfskills.exe, 00000000.00000002.3152168133.000001F800001000.00000004.00000800.00020000.00000000.sdmp	String found in binary or memory: http://schemas.xmlsoap.org/ws/2005/05/identity/claims/name
Source: pdfskills.exe, 00000000.00000002.3158252184.000001F873212000.00000004.00000800.00020000.00000000.sdmp	String found in binary or memory: http://scripts.sil.org/OFL
Source: pdfskills.exe, 00000000.00000002.3155175729.000001F86F305000.00000004.00000020.00020000.00000000.sdmp	String found in binary or memory: http://scripts.sil.org/OFLRegular
Source: pdfskills.exe	String found in binary or memory: http://scripts.sil.org/OFLThis
Source: pdfskills.exe	String found in binary or memory: http://scripts.sil.org/OFLhttps://rsms.me/Rasmus
Source: pdfskills.exe	String found in binary or memory: http://scripts.sil.org/OFLhttps://www.indiantypefoundry.comhttp://www.colophon-foundry.orgColophon
Source: pdfskills.exe	String found in binary or memory: http://secure.globalsign.com/cacert/codesigningrootr45.crt0A
Source: pdfskills.exe	String found in binary or memory: http://secure.globalsign.com/cacert/gsgccr45evcodesignca2020.crt0?
Source: pdfskills.exe	String found in binary or memory: http://secure.globalsign.com/cacert/root-r3.crt06
Source: pdfskills.exe, 00000000.00000002.3155175729.000001F86F305000.00000004.00000020.00020000.00000000.sdmp, pdfskills.exe, 00000000.00000002.3158252184.000001F873212000.00000004.00000800.00020000.00000000.sdmp	String found in binary or memory: http://www.colophon-foundry.org
Source: pdfskills.exe, 00000000.00000002.3155175729.000001F86F305000.00000004.00000020.00020000.00000000.sdmp	String found in binary or memory: http://www.colophon-foundry.org3
Source: pdfskills.exe	String found in binary or memory: https://cbn.skillcli.com/r
Source: pdfskills.exe	String found in binary or memory: https://cbn.skillcli.com/rA52463134d0765d83ac49f98f9aib5c6e
Source: pdfskills.exe	String found in binary or memory: https://cnvr.pdfskillspro.com/api/convert/
Source: pdfskills.exe	String found in binary or memory: https://github.com/rsms/inter)
Source: pdfskills.exe, 00000000.00000002.3158252184.000001F873212000.00000004.00000800.00020000.00000000.sdmp	String found in binary or memory: https://rsms.me/
Source: pdfskills.exe	String found in binary or memory: https://val.skillcli.com/v6#
Source: pdfskills.exe, 00000000.00000002.3152168133.000001F800001000.00000004.00000800.00020000.00000000.sdmp	String found in binary or memory: https://val.skillcli.com/v6h
Source: pdfskills.exe	String found in binary or memory: https://www.globalsign.com/repository/0
Source: pdfskills.exe, 00000000.00000002.3158252184.000001F873212000.00000004.00000800.00020000.00000000.sdmp	String found in binary or memory: https://www.indiantypefoundry.com
Source: pdfskills.exe	String found in binary or memory: https://www.pdfskillsapp.com/farewell
Source: pdfskills.exe, 00000000.00000002.3152168133.000001F800001000.00000004.00000800.00020000.00000000.sdmp	String found in binary or memory: https://www.pdfskillsapp.com/privacy-policy
Source: pdfskills.exe	String found in binary or memory: https://www.pdfskillsapp.com/privacy-policy?
Source: pdfskills.exe, 00000000.00000002.3152168133.000001F800422000.00000004.00000800.00020000.00000000.sdmp, pdfskills.exe, 00000000.00000002.3152168133.000001F800001000.00000004.00000800.00020000.00000000.sdmp	String found in binary or memory: https://www.pdfskillsapp.com/terms
Source: pdfskills.exe	String found in binary or memory: https://www.pdfskillsapp.com/terms?
Source: pdfskills.exe	String found in binary or memory: https://www.pdfskillsapp.com/thanks?userid=

Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 49721
Source: unknown	Network traffic detected: HTTP traffic on port 49721 -> 443

Source: unknown

HTTPS traffic detected: 198.71.59.132:443 -> 192.168.2.10:49721 version: TLS 1.2

Source: C:\Users\user\Desktop\pdfskills.exe	Code function: 0_2_00007FF7BFEB1F95	0_2_00007FF7BFEB1F95
Source: C:\Users\user\Desktop\pdfskills.exe	Code function: 0_2_00007FF7BFEB8E69	0_2_00007FF7BFEB8E69
Source: C:\Users\user\Desktop\pdfskills.exe	Code function: 0_2_00007FF7BFEB912E	0_2_00007FF7BFEB912E

Source: pdfskills.exe

Static PE information: No import functions for PE file found

Source: pdfskills.exe, 00000000.00000000.1305178010.000001F86CB22000.00000002.00000001.01000000.00000003.sdmp	Binary or memory string: OriginalFilenameUninstall.exe4 vs pdfskills.exe
Source: pdfskills.exe, 00000000.00000000.1305178010.000001F86CB22000.00000002.00000001.01000000.00000003.sdmp	Binary or memory string: OriginalFilenamePDFSkillsApp.exe: vs pdfskills.exe
Source: pdfskills.exe	Binary or memory string: OriginalFilenameUninstall.exe4 vs pdfskills.exe
Source: pdfskills.exe	Binary or memory string: OriginalFilenamePDFSkillsApp.exe: vs pdfskills.exe

Source: pdfskills.exe, ProcessPathFinder.cs

Base64 encoded string: 'QzpcUHJvZ3JhbSBGaWxlcyAoeDg2KVxHb29nbGVcQ2hyb21lXEFwcGxpY2F0aW9uXGNocm9tZS5leGU=', 'QzpcUHJvZ3JhbSBGaWxlc1xHb29nbGVcQ2hyb21lXEFwcGxpY2F0aW9uXGNocm9tZS5leGU='

Source: classification engine

Classification label: clean4.winEXE@1/2@1/1

Source: C:\Users\user\Desktop\pdfskills.exe

File created: C:\Users\user\AppData\Local\PDFSkills

Jump to behavior

Source: C:\Users\user\Desktop\pdfskills.exe

Mutant created: NULL

Source: pdfskills.exe

Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ

Source: pdfskills.exe

Static file information: TRID: Win64 Executable GUI Net Framework (217006/5) 49.88%

Source: C:\Users\user\Desktop\pdfskills.exe

Key opened: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers

Jump to behavior

Source: pdfskills.exe	String found in binary or memory: $settings = New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries -StartWhenAvailable -RestartCount 2 -RestartInterval (New-TimeSpan -Minutes 10) -RunOnlyIfNetworkAvailable
Source: pdfskills.exe	String found in binary or memory: "rc/add_circle.png
Source: pdfskills.exe	String found in binary or memory: rc/loader.png
Source: pdfskills.exe	String found in binary or memory: /RC/loader.png
Source: pdfskills.exe	String found in binary or memory: /RC/add_circle.png

Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: mscoree.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: kernel.appcore.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: version.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: vcruntime140_clr0400.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: ucrtbase_clr0400.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: ucrtbase_clr0400.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: uxtheme.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: cryptsp.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: rsaenh.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: cryptbase.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: dwrite.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: msvcp140_clr0400.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: windows.storage.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: wldp.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: profapi.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: dwmapi.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: d3d9.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: d3d10warp.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: urlmon.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: iertutil.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: srvcli.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: netutils.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: windowscodecs.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: wtsapi32.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: winsta.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: powrprof.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: umpdc.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: textshaping.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: dataexchange.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: d3d11.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: dcomp.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: dxgi.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: twinapi.appcore.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: resourcepolicyclient.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: dxcore.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: textinputframework.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: coreuicomponents.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: coremessaging.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: ntmarta.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: wintypes.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: wintypes.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: wintypes.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: msctfui.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: uiautomationcore.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: propsys.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: d3dcompiler_47.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: iphlpapi.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: dnsapi.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: dhcpcsvc6.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: dhcpcsvc.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: winnsi.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: rasapi32.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: rasman.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: rtutils.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: mswsock.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: winhttp.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: ondemandconnroutehelper.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: rasadhlp.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: fwpuclnt.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: secur32.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: sspicli.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: schannel.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: mskeyprotect.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: ntasn1.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: ncrypt.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: ncryptsslp.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: msasn1.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: gpapi.dll	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Section loaded: userenv.dll	Jump to behavior

Source: C:\Users\user\Desktop\pdfskills.exe

Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{41945702-8302-44A6-9445-AC98E8AFA086}\InprocServer32

Jump to behavior

Source: Window Recorder

Window detected: More than 3 window changes detected

Source: C:\Users\user\Desktop\pdfskills.exe

File opened: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorrc.dll

Jump to behavior

Source: pdfskills.exe

Static PE information: certificate valid

Source: pdfskills.exe

Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR

Source: pdfskills.exe

Static PE information: Virtual size of .text is bigger than: 0x100000

Source: pdfskills.exe

Static PE information: Image base 0x140000000 > 0x60000000

Source: pdfskills.exe

Static file information: File size 2302744 > 1048576

Source: pdfskills.exe

Static PE information: Raw size of .text is bigger than: 0x100000 < 0x22ae00

Source: pdfskills.exe

Static PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE

Source: pdfskills.exe

Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_DEBUG

Source: pdfskills.exe

Static PE information: 0x8DE70604 [Sat Jun 10 17:16:52 2045 UTC]

Source: C:\Users\user\Desktop\pdfskills.exe	Code function: 0_2_00007FF7BFD9D2A5 pushad ; iretd	0_2_00007FF7BFD9D2A6
Source: C:\Users\user\Desktop\pdfskills.exe	Code function: 0_2_00007FF7BFEB00BD pushad ; iretd	0_2_00007FF7BFEB00C1
Source: C:\Users\user\Desktop\pdfskills.exe	Code function: 0_2_00007FF7BFEB57F0 pushad ; iretd	0_2_00007FF7BFEB57FD
Source: C:\Users\user\Desktop\pdfskills.exe	Code function: 0_2_00007FF7BFEC5CB0 push FFFFFFE8h; retf	0_2_00007FF7BFEC5CF1

Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior

Source: C:\Users\user\Desktop\pdfskills.exe	Memory allocated: 1F86D080000 memory reserve \| memory write watch			Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Memory allocated: 1F86EB20000 memory reserve \| memory write watch			Jump to behavior

Source: C:\Users\user\Desktop\pdfskills.exe

Thread delayed: delay time: 922337203685477

Jump to behavior

Source: C:\Users\user\Desktop\pdfskills.exe

Window / User API: threadDelayed 1294

Jump to behavior

Source: C:\Users\user\Desktop\pdfskills.exe TID: 7444	Thread sleep time: -3689348814741908s >= -30000s			Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe TID: 7444	Thread sleep time: -100000s >= -30000s			Jump to behavior

Source: C:\Users\user\Desktop\pdfskills.exe	Thread delayed: delay time: 922337203685477			Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Thread delayed: delay time: 100000			Jump to behavior

Source: pdfskills.exe, 00000000.00000002.3156854271.000001F86F72D000.00000004.00000020.00020000.00000000.sdmp

Binary or memory string: Hyper-V RAW%SystemRoot%\system32\mswsock.dll

Source: C:\Users\user\Desktop\pdfskills.exe

Process token adjusted: Debug

Jump to behavior

Source: C:\Users\user\Desktop\pdfskills.exe

Memory allocated: page read and write | page guard

Jump to behavior

Source: C:\Users\user\Desktop\pdfskills.exe	Queries volume information: C:\Users\user\Desktop\pdfskills.exe VolumeInformation	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\UIAutomationTypes\v4.0_4.0.0.0__31bf3856ad364e35\UIAutomationTypes.dll VolumeInformation	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\UIAutomationProvider\v4.0_4.0.0.0__31bf3856ad364e35\UIAutomationProvider.dll VolumeInformation	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.Web.Extensions\v4.0_4.0.0.0__31bf3856ad364e35\System.Web.Extensions.dll VolumeInformation	Jump to behavior
Source: C:\Users\user\Desktop\pdfskills.exe	Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_64\System.Web\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Web.dll VolumeInformation	Jump to behavior

Source: C:\Users\user\Desktop\pdfskills.exe

Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography MachineGuid

Jump to behavior

Mitre Att&ck Matrix

Reconnaissance	Resource Development	Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Command and Control	Exfiltration	Impact
Gather Victim Identity Information	Acquire Infrastructure	Valid Accounts	2 Command and Scripting Interpreter	1 DLL Side-Loading	1 DLL Side-Loading	1 Masquerading	OS Credential Dumping	1 Security Software Discovery	Remote Services	1 Archive Collected Data	11 Encrypted Channel	Exfiltration Over Other Network Medium	Abuse Accessibility Features
Credentials	Domains	Default Accounts	Scheduled Task/Job	Boot or Logon Initialization Scripts	Boot or Logon Initialization Scripts	1 Disable or Modify Tools	LSASS Memory	32 Virtualization/Sandbox Evasion	Remote Desktop Protocol	Data from Removable Media	2 Non-Application Layer Protocol	Exfiltration Over Bluetooth	Network Denial of Service
Email Addresses	DNS Server	Domain Accounts	At	Logon Script (Windows)	Logon Script (Windows)	32 Virtualization/Sandbox Evasion	Security Account Manager	1 Application Window Discovery	SMB/Windows Admin Shares	Data from Network Shared Drive	3 Application Layer Protocol	Automated Exfiltration	Data Encrypted for Impact
Employee Names	Virtual Private Server	Local Accounts	Cron	Login Hook	Login Hook	11 Obfuscated Files or Information	NTDS	12 System Information Discovery	Distributed Component Object Model	Input Capture	Protocol Impersonation	Traffic Duplication	Data Destruction
Gather Victim Network Information	Server	Cloud Accounts	Launchd	Network Logon Script	Network Logon Script	1 Timestomp	LSA Secrets	Internet Connection Discovery	SSH	Keylogging	Fallback Channels	Scheduled Transfer	Data Encrypted for Impact
Domain Properties	Botnet	Replication Through Removable Media	Scheduled Task	RC Scripts	RC Scripts	1 DLL Side-Loading	Cached Domain Credentials	Wi-Fi Discovery	VNC	GUI Input Capture	Multiband Communication	Data Transfer Size Limits	Service Stop

Behavior Graph

Hide Legend

Legend:

Process
Signature
Created File
DNS/IP Info
Is Dropped
Is Windows Process
Number of created Registry Values
Number of created Files
Visual Basic
Delphi
Java
.Net C# or VB.NET
C, C++ or other language
Is malicious
Internet

Screenshots

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Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
pdfskills.exe	0%	ReversingLabs

Source	Detection	Scanner	Label
https://www.indiantypefoundry.com	0%	Avira URL Cloud	safe
http://www.colophon-foundry.org	0%	Avira URL Cloud	safe
http://www.colophon-foundry.org3	0%	Avira URL Cloud	safe
http://scripts.sil.org/OFLRegular	0%	Avira URL Cloud	safe
https://val.skillcli.com/v6	0%	Avira URL Cloud	safe
http://defaultcontainer/Belongings/dmsans-regular.ttf	0%	Avira URL Cloud	safe
http://defaultcontainer/Belongings/dmsans-bold.ttf	0%	Avira URL Cloud	safe
https://val.skillcli.com/v6#	0%	Avira URL Cloud	safe
https://cbn.skillcli.com/rA52463134d0765d83ac49f98f9aib5c6e	0%	Avira URL Cloud	safe
https://cbn.skillcli.com/r	0%	Avira URL Cloud	safe
https://val.skillcli.com/v6h	0%	Avira URL Cloud	safe
https://cnvr.pdfskillspro.com/api/convert/	0%	Avira URL Cloud	safe
http://scripts.sil.org/OFLhttps://www.indiantypefoundry.comhttp://www.colophon-foundry.orgColophon	0%	Avira URL Cloud	safe

Domains and IPs

Download Network PCAP: filtered – full

Contacted Domains

Name	IP	Active	Malicious	Antivirus Detection	Reputation
val.skillcli.com	198.71.59.132	true	false		unknown

Contacted URLs

Name	Malicious	Antivirus Detection	Reputation
https://val.skillcli.com/v6	false	Avira URL Cloud: safe	unknown

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
https://www.pdfskillsapp.com/privacy-policy?	pdfskills.exe	false		high
https://www.indiantypefoundry.com	pdfskills.exe, 00000000.00000002.3158252184.000001F873212000.00000004.00000800.00020000.00000000.sdmp	false	Avira URL Cloud: safe	unknown
https://www.pdfskillsapp.com/privacy-policy	pdfskills.exe, 00000000.00000002.3152168133.000001F800001000.00000004.00000800.00020000.00000000.sdmp	false		high
https://www.pdfskillsapp.com/farewell	pdfskills.exe	false		high
https://www.pdfskillsapp.com/thanks?userid=	pdfskills.exe	false		high
http://www.colophon-foundry.org	pdfskills.exe, 00000000.00000002.3155175729.000001F86F305000.00000004.00000020.00020000.00000000.sdmp, pdfskills.exe, 00000000.00000002.3158252184.000001F873212000.00000004.00000800.00020000.00000000.sdmp	false	Avira URL Cloud: safe	unknown
http://scripts.sil.org/OFLhttps://rsms.me/Rasmus	pdfskills.exe	false		high
https://cbn.skillcli.com/r	pdfskills.exe	false	Avira URL Cloud: safe	unknown
http://scripts.sil.org/OFLRegular	pdfskills.exe, 00000000.00000002.3155175729.000001F86F305000.00000004.00000020.00020000.00000000.sdmp	false	Avira URL Cloud: safe	unknown
https://rsms.me/	pdfskills.exe, 00000000.00000002.3158252184.000001F873212000.00000004.00000800.00020000.00000000.sdmp	false		high
http://www.colophon-foundry.org3	pdfskills.exe, 00000000.00000002.3155175729.000001F86F305000.00000004.00000020.00020000.00000000.sdmp	false	Avira URL Cloud: safe	unknown
http://defaultcontainer/Belongings/dmsans-regular.ttf	pdfskills.exe, 00000000.00000002.3152168133.000001F800795000.00000004.00000800.00020000.00000000.sdmp, pdfskills.exe, 00000000.00000002.3152168133.000001F800422000.00000004.00000800.00020000.00000000.sdmp	false	Avira URL Cloud: safe	unknown
https://cbn.skillcli.com/rA52463134d0765d83ac49f98f9aib5c6e	pdfskills.exe	false	Avira URL Cloud: safe	unknown
http://defaultcontainer/Belongings/dmsans-bold.ttf	pdfskills.exe, 00000000.00000002.3152168133.000001F800795000.00000004.00000800.00020000.00000000.sdmp, pdfskills.exe, 00000000.00000002.3152168133.000001F8005EE000.00000004.00000800.00020000.00000000.sdmp, pdfskills.exe, 00000000.00000002.3152168133.000001F800422000.00000004.00000800.00020000.00000000.sdmp	false	Avira URL Cloud: safe	unknown
https://val.skillcli.com/v6#	pdfskills.exe	false	Avira URL Cloud: safe	unknown
https://www.pdfskillsapp.com/terms	pdfskills.exe, 00000000.00000002.3152168133.000001F800422000.00000004.00000800.00020000.00000000.sdmp, pdfskills.exe, 00000000.00000002.3152168133.000001F800001000.00000004.00000800.00020000.00000000.sdmp	false		high
https://github.com/rsms/inter)	pdfskills.exe	false		high
https://val.skillcli.com/v6h	pdfskills.exe, 00000000.00000002.3152168133.000001F800001000.00000004.00000800.00020000.00000000.sdmp	false	Avira URL Cloud: safe	unknown
http://scripts.sil.org/OFLhttps://www.indiantypefoundry.comhttp://www.colophon-foundry.orgColophon	pdfskills.exe	false	Avira URL Cloud: safe	unknown
http://scripts.sil.org/OFL	pdfskills.exe, 00000000.00000002.3158252184.000001F873212000.00000004.00000800.00020000.00000000.sdmp	false		high
http://schemas.xmlsoap.org/ws/2005/05/identity/claims/name	pdfskills.exe, 00000000.00000002.3152168133.000001F800001000.00000004.00000800.00020000.00000000.sdmp	false		high
http://scripts.sil.org/OFLThis	pdfskills.exe	false		high
https://cnvr.pdfskillspro.com/api/convert/	pdfskills.exe	false	Avira URL Cloud: safe	unknown
https://www.pdfskillsapp.com/terms?	pdfskills.exe	false		high

World Map of Contacted IPs

No. of IPs < 25%
25% < No. of IPs < 50%
50% < No. of IPs < 75%
75% < No. of IPs

Public IPs

IP	Domain	Country	Flag	ASN	ASN Name	Malicious
198.71.59.132	val.skillcli.com	United States		8560	ONEANDONE-ASBrauerstrasse48DE	false

General Information

Joe Sandbox version:	41.0.0 Charoite
Analysis ID:	1556594
Start date and time:	2024-11-15 17:34:51 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 5m 27s
Hypervisor based Inspection enabled:	false
Report type:	full
Cookbook file name:	default.jbs
Analysis system description:	Windows 10 x64 22H2 with Office Professional Plus 2019, Chrome 117, Firefox 118, Adobe Reader DC 23, Java 8 Update 381, 7zip 23.01
Run name:	Run with higher sleep bypass
Number of analysed new started processes analysed:	7
Number of new started drivers analysed:	0
Number of existing processes analysed:	0
Number of existing drivers analysed:	0
Number of injected processes analysed:	0
Technologies:	HCA enabled EGA enabled AMSI enabled
Analysis Mode:	default
Analysis stop reason:	Timeout
Sample name:	pdfskills.exe
Detection:	CLEAN
Classification:	clean4.winEXE@1/2@1/1
EGA Information:	Successful, ratio: 100%
HCA Information:	Successful, ratio: 67% Number of executed functions: 2 Number of non-executed functions: 3
Cookbook Comments:	Found application associated with file extension: .exe Sleeps bigger than 100000000ms are automatically reduced to 1000ms Sleep loops longer than 100000000ms are bypassed. Single calls with delay of 100000000ms and higher are ignored

Warnings

Exclude process from analysis (whitelisted): MpCmdRun.exe, dllhost.exe, WMIADAP.exe, SIHClient.exe, conhost.exe, svchost.exe
Excluded domains from analysis (whitelisted): fs.microsoft.com, otelrules.azureedge.net, slscr.update.microsoft.com, ctldl.windowsupdate.com, fe3cr.delivery.mp.microsoft.com
Not all processes where analyzed, report is missing behavior information
Report size getting too big, too many NtOpenKeyEx calls found.
Report size getting too big, too many NtProtectVirtualMemory calls found.
Report size getting too big, too many NtQueryValueKey calls found.
Report size getting too big, too many NtReadVirtualMemory calls found.
VT rate limit hit for: pdfskills.exe

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
ONEANDONE-ASBrauerstrasse48DE	PROFORMA INVOICE.exe	Get hash	malicious	FormBook	Browse	217.76.156.252
	xd.x86.elf	Get hash	malicious	Mirai	Browse	104.192.6.97
	wavjjT3sEq.exe	Get hash	malicious	FormBook	Browse	217.160.0.231
	Arrival Notice.exe	Get hash	malicious	FormBook	Browse	217.160.0.60
	mNtu4X8ZyE.exe	Get hash	malicious	Emotet	Browse	87.106.46.107
	75A0VTo3z9.exe	Get hash	malicious	Emotet	Browse	87.106.46.107
	New PO [FK4-7173].pdf.exe	Get hash	malicious	FormBook	Browse	217.160.0.220
	Digiturk.html	Get hash	malicious	HTMLPhisher	Browse	217.160.0.3
	hiss.mpsl.elf	Get hash	malicious	Unknown	Browse	217.160.158.130
	AWB_NO_907853880911.exe	Get hash	malicious	FormBook	Browse	217.160.0.60

JA3 Fingerprints

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
3b5074b1b5d032e5620f69f9f700ff0e	QUOTATION_NOVQTRA071244#U00faPDF.scr.exe	Get hash	malicious	Unknown	Browse	198.71.59.132
	TEKL#U0130F TALEP VE F#U0130YAT TEKL#U0130F#U0130_xlxs.exe	Get hash	malicious	Snake Keylogger, VIP Keylogger	Browse	198.71.59.132
	http://portableapps.com	Get hash	malicious	Unknown	Browse	198.71.59.132
	Order88983273293729387293828PDF.exe	Get hash	malicious	GuLoader, Snake Keylogger	Browse	198.71.59.132
	file.exe	Get hash	malicious	LummaC	Browse	198.71.59.132
	QUOTATION_NOVQTRA071244#U00b7PDF.scr.exe	Get hash	malicious	Snake Keylogger	Browse	198.71.59.132
	grd.ps1	Get hash	malicious	LummaC Stealer	Browse	198.71.59.132
	SAMPLE_PHOTO.js	Get hash	malicious	AgentTesla	Browse	198.71.59.132
	Email_sending_restriction_[sebastien.morel!](#HOHSM).html	Get hash	malicious	Unknown	Browse	198.71.59.132
	BankInformation.vbe	Get hash	malicious	AgentTesla	Browse	198.71.59.132

Process:	C:\Users\user\Desktop\pdfskills.exe
File Type:	ASCII text, with no line terminators
Category:	dropped
Size (bytes):	36
Entropy (8bit):	3.409256168518586
Encrypted:	false
SSDEEP:	3:qTrHtPTBEkHXE:mHtdHXE
MD5:	CF07F3538FC8BAC60AF9F4E442CEE0D2
SHA1:	F54601A639E1184E97736C7B5ED3079FA261E052
SHA-256:	6E436BA78F8947A963D0B984F0954C2738D42FF024A10476B6AEDFF7B9DBD79D
SHA-512:	2B2CA40845C2A74617C1A94AA2F9B014A18095AD3A919960545FE7C7BEF479DBEF3ED3EA2B3EACCF429712856CB2C88651D767AF74D89650CEDE75FAAC137910
Malicious:	false
Reputation:	low
Preview:	b1fd5cfa-faff-48be-adb8-6daab60bceba

C:\Users\user\AppData\Roaming\SMCR\userId.txt

Download File

Process:	C:\Users\user\Desktop\pdfskills.exe
File Type:	ASCII text, with no line terminators
Category:	dropped
Size (bytes):	36
Entropy (8bit):	3.409256168518586
Encrypted:	false
SSDEEP:	3:qTrHtPTBEkHXE:mHtdHXE
MD5:	CF07F3538FC8BAC60AF9F4E442CEE0D2
SHA1:	F54601A639E1184E97736C7B5ED3079FA261E052
SHA-256:	6E436BA78F8947A963D0B984F0954C2738D42FF024A10476B6AEDFF7B9DBD79D
SHA-512:	2B2CA40845C2A74617C1A94AA2F9B014A18095AD3A919960545FE7C7BEF479DBEF3ED3EA2B3EACCF429712856CB2C88651D767AF74D89650CEDE75FAAC137910
Malicious:	false
Reputation:	low
Preview:	b1fd5cfa-faff-48be-adb8-6daab60bceba

Static File Info

General

File type:	PE32+ executable (GUI) x86-64 Mono/.Net assembly, for MS Windows
Entropy (8bit):	7.405466142742989
TrID:	Win64 Executable GUI Net Framework (217006/5) 49.88% Win64 Executable GUI (202006/5) 46.43% Win64 Executable (generic) (12005/4) 2.76% Generic Win/DOS Executable (2004/3) 0.46% DOS Executable Generic (2002/1) 0.46%
File name:	pdfskills.exe
File size:	2'302'744 bytes
MD5:	3fed63ba4527b108772f0b932d48a875
SHA1:	66bce2303a39e2f676502e5c77d3d3746730f33b
SHA256:	2dc119979db7af6999e4e003cdd827987f5d60035049a8f9998a66eda1864453
SHA512:	90243c85b16cb2b8914ef1ee8e81ea08a3e63dfbeb45d7d0c0e32074bc986516684c3d9971bb54f41922122cf9a37075be2bb8730e5a524191238c4d9cbc9b7a
SSDEEP:	49152:md3Z/5f/udku1TST6yPcCeXb7sO90lwBdGTZt:Qx3cU2ykCeXnsQ0lwqT/
TLSH:	78B57A82B212830AFD0F19F5E6D2B353E332AB41A613910A6674255CCB5FDA43FD619F
File Content Preview:	MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......PE..d................."...0..."..D........... .....@..... .......................@#......M#...`...@......@............... .....

File Icon


Icon Hash:	9a69692961696992

Static PE Info

General

Entrypoint:	0x140000000
Entrypoint Section:
Digitally signed:	true
Imagebase:	0x140000000
Subsystem:	windows gui
Image File Characteristics:	EXECUTABLE_IMAGE, LARGE_ADDRESS_AWARE
DLL Characteristics:	HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Time Stamp:	0x8DE70604 [Sat Jun 10 17:16:52 2045 UTC]
TLS Callbacks:
CLR (.Net) Version:
OS Version Major:	4
OS Version Minor:	0
File Version Major:	4
File Version Minor:	0
Subsystem Version Major:	4
Subsystem Version Minor:	0
Import Hash:

Authenticode Signature

Signature Valid:	true
Signature Issuer:	CN=GlobalSign GCC R45 EV CodeSigning CA 2020, O=GlobalSign nv-sa, C=BE
Signature Validation Error:	The operation completed successfully
Error Number:	0
Not Before, Not After	26/02/2024 13:58:14 26/02/2025 13:58:14
Subject Chain	E=info@redrootltd.com, CN=RED ROOT LTD, O=RED ROOT LTD, L=Ra'anana, S=Central District, C=IL, OID.1.3.6.1.4.1.311.60.2.1.3=IL, SERIALNUMBER=516201936, OID.2.5.4.15=Private Organization
Version:	3
Thumbprint MD5:	CCA8C7C0D7D068E3C661F22323A4D633
Thumbprint SHA-1:	D9AFF96830351EB0B8B219729D110822448FE511
Thumbprint SHA-256:	A42662C6527B001411F9DE4E72A48E7EA8E37E0339035F3248E97DC2F0F69C2D
Serial:	6838E670EA30DFA3294EA278

Entrypoint Preview

Instruction
dec ebp
pop edx
nop
add byte ptr [ebx], al
add byte ptr [eax], al
add byte ptr [eax+eax], al
add byte ptr [eax], al

Data Directories

Name	Virtual Address	Virtual Size	Is in Section
IMAGE_DIRECTORY_ENTRY_EXPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_IMPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_RESOURCE	0x22e000	0x43e8	.rsrc
IMAGE_DIRECTORY_ENTRY_EXCEPTION	0x0	0x0
IMAGE_DIRECTORY_ENTRY_SECURITY	0x22f400	0x2f18	.rsrc
IMAGE_DIRECTORY_ENTRY_BASERELOC	0x0	0x0
IMAGE_DIRECTORY_ENTRY_DEBUG	0x22cda0	0x1c	.text
IMAGE_DIRECTORY_ENTRY_COPYRIGHT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_GLOBALPTR	0x0	0x0
IMAGE_DIRECTORY_ENTRY_TLS	0x0	0x0
IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG	0x0	0x0
IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_IAT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR	0x2000	0x48	.text
IMAGE_DIRECTORY_ENTRY_RESERVED	0x0	0x0

Sections

Name	Virtual Address	Virtual Size	Raw Size	MD5	Xored PE	ZLIB Complexity	File Type	Entropy	Characteristics
.text	0x2000	0x22adbc	0x22ae00	c7f92b99c70a59c88b27aff21d10da05	unknown	unknown	unknown	unknown	IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
.rsrc	0x22e000	0x43e8	0x4400	a1c7a947b2952b139b3c395d234656df	False	0.166015625	data	4.140947489466721	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ

Resources

Name	RVA	Size	Type	ZLIB Complexity
RT_ICON	0x22e140	0x468	Device independent bitmap graphic, 16 x 32 x 32, image size 0	0.28812056737588654
RT_ICON	0x22e5b8	0x1128	Device independent bitmap graphic, 32 x 64 x 32, image size 0	0.13866120218579234
RT_ICON	0x22f6f0	0x2668	Device independent bitmap graphic, 48 x 96 x 32, image size 0	0.11706672091131001
RT_GROUP_ICON	0x231d68	0x30	data	0.8541666666666666
RT_VERSION	0x231da8	0x382	data	0.4309576837416481
RT_MANIFEST	0x23213c	0x2a7	XML 1.0 document, Unicode text, UTF-8 (with BOM) text, with CRLF line terminators	0.5213549337260678

Network Behavior

Download Network PCAP: filtered – full

Network Port Distribution

Total Packets: 11
• 443 (HTTPS)
• 53 (DNS)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Nov 15, 2024 17:35:49.345591068 CET	49721	443	192.168.2.10	198.71.59.132
Nov 15, 2024 17:35:49.345649004 CET	443	49721	198.71.59.132	192.168.2.10
Nov 15, 2024 17:35:49.345710039 CET	49721	443	192.168.2.10	198.71.59.132
Nov 15, 2024 17:35:49.388816118 CET	49721	443	192.168.2.10	198.71.59.132
Nov 15, 2024 17:35:49.388834000 CET	443	49721	198.71.59.132	192.168.2.10
Nov 15, 2024 17:35:50.097004890 CET	443	49721	198.71.59.132	192.168.2.10
Nov 15, 2024 17:35:50.097239971 CET	49721	443	192.168.2.10	198.71.59.132
Nov 15, 2024 17:35:50.101021051 CET	49721	443	192.168.2.10	198.71.59.132
Nov 15, 2024 17:35:50.101033926 CET	443	49721	198.71.59.132	192.168.2.10
Nov 15, 2024 17:35:50.101344109 CET	443	49721	198.71.59.132	192.168.2.10
Nov 15, 2024 17:35:50.149038076 CET	49721	443	192.168.2.10	198.71.59.132
Nov 15, 2024 17:35:50.166068077 CET	49721	443	192.168.2.10	198.71.59.132
Nov 15, 2024 17:35:50.207340002 CET	443	49721	198.71.59.132	192.168.2.10
Nov 15, 2024 17:35:50.367703915 CET	443	49721	198.71.59.132	192.168.2.10
Nov 15, 2024 17:35:50.387240887 CET	49721	443	192.168.2.10	198.71.59.132
Nov 15, 2024 17:35:50.387250900 CET	443	49721	198.71.59.132	192.168.2.10
Nov 15, 2024 17:35:50.713149071 CET	443	49721	198.71.59.132	192.168.2.10
Nov 15, 2024 17:35:50.713629007 CET	443	49721	198.71.59.132	192.168.2.10
Nov 15, 2024 17:35:50.713692904 CET	49721	443	192.168.2.10	198.71.59.132
Nov 15, 2024 17:35:50.722104073 CET	49721	443	192.168.2.10	198.71.59.132

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Nov 15, 2024 17:35:49.299200058 CET	50461	53	192.168.2.10	1.1.1.1
Nov 15, 2024 17:35:49.333242893 CET	53	50461	1.1.1.1	192.168.2.10

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Nov 15, 2024 17:35:49.299200058 CET	192.168.2.10	1.1.1.1	0xd111	Standard query (0)	val.skillcli.com	A (IP address)	IN (0x0001)	false

DNS Answers

Timestamp	Source IP	Dest IP	Trans ID	Reply Code	Name	CName	Address	Type	Class	DNS over HTTPS
Nov 15, 2024 17:35:49.333242893 CET	1.1.1.1	192.168.2.10	0xd111	No error (0)	val.skillcli.com		198.71.59.132	A (IP address)	IN (0x0001)	false

HTTP Request Dependency Graph

val.skillcli.com

HTTPS Proxied Packets

Session ID	Source IP	Source Port	Destination IP	Destination Port	PID	Process
0	192.168.2.10	49721	198.71.59.132	443	8064	C:\Users\user\Desktop\pdfskills.exe

Timestamp	Bytes transferred	Direction	Data
2024-11-15 16:35:50 UTC	152	OUT	POST /v6 HTTP/1.1 Content-Type: text/plain; charset=utf-8 Host: val.skillcli.com Content-Length: 88 Expect: 100-continue Connection: Keep-Alive
2024-11-15 16:35:50 UTC	25	IN	HTTP/1.1 100 Continue
2024-11-15 16:35:50 UTC	88	OUT	Data Raw: 47 31 4d 43 55 31 59 46 55 56 55 43 46 46 42 55 55 67 55 61 42 67 45 41 56 68 55 45 58 46 56 64 46 51 39 63 41 46 55 41 41 31 52 57 55 6c 5a 58 55 78 38 44 42 46 4d 4d 44 67 63 42 55 51 63 4c 44 56 73 44 43 31 49 4b 47 46 77 4d 44 67 70 5a 42 6c 6f 44 55 77 3d 3d Data Ascii: G1MCU1YFUVUCFFBUUgUaBgEAVhUEXFVdFQ9cAFUAA1RWUlZXUx8DBFMMDgcBUQcLDVsDC1IKGFwMDgpZBloDUw==
2024-11-15 16:35:50 UTC	192	IN	HTTP/1.1 200 OK Content-Type: application/json;charset=ISO-8859-1 Date: Fri, 15 Nov 2024 16:35:50 GMT Server: Nginx Vary: Accept-Encoding Connection: close Transfer-Encoding: chunked
2024-11-15 16:35:50 UTC	522	IN	Data Raw: 32 30 33 0d 0a 22 48 41 4e 31 46 77 6f 41 57 31 6c 5a 58 31 31 51 52 30 70 54 54 46 39 59 56 78 45 46 41 42 30 42 65 52 4d 46 43 77 4a 56 56 41 35 51 43 51 59 46 46 41 51 44 41 6c 73 66 44 41 51 45 41 52 6c 57 55 46 77 43 46 51 41 41 43 41 55 45 42 56 30 43 57 51 52 52 44 78 45 46 41 42 30 41 65 78 4d 46 43 31 56 55 52 6c 46 64 56 6b 55 53 43 77 59 53 41 58 6b 58 44 58 51 53 44 6e 59 53 41 41 70 59 54 56 74 48 62 56 56 56 58 6c 30 58 43 67 51 53 43 6e 55 53 42 33 6f 58 44 58 49 53 43 33 63 53 41 41 70 52 54 55 56 44 56 6c 6c 39 52 31 56 43 48 51 51 46 48 41 64 32 56 46 6c 65 53 31 4d 53 43 33 63 53 41 41 70 66 55 56 74 53 62 55 31 48 56 78 30 41 43 68 4d 45 65 42 45 46 41 46 6c 43 53 46 70 65 57 6c 56 44 57 31 64 63 48 51 52 78 56 6c 64 44 56 30 77 66 53 Data Ascii: 203"HAN1FwoAW1lZX11QR0pTTF9YVxEFAB0BeRMFCwJVVA5QCQYFFAQDAlsfDAQEARlWUFwCFQAACAUEBV0CWQRRDxEFAB0AexMFC1VURlFdVkUSCwYSAXkXDXQSDnYSAApYTVtHbVVVXl0XCgQSCnUSB3oXDXISC3cSAApRTUVDVll9R1VCHQQFHAd2VFleS1MSC3cSAApfUVtSbU1HVx0AChMEeBEFAFlCSFpeWlVDW1dcHQRxVldDV0wfS
2024-11-15 16:35:50 UTC	5	IN	Data Raw: 30 0d 0a 0d 0a Data Ascii: 0

Statistics

CPU Usage

• pdfskills.exe

Click to jump to process

Memory Usage

• pdfskills.exe

Click to jump to process

High Level Behavior Distribution

• File
• Registry
• Network

Click to dive into process behavior distribution

Target ID:	0
Start time:	11:35:46
Start date:	15/11/2024
Path:	C:\Users\user\Desktop\pdfskills.exe
Wow64 process (32bit):	false
Commandline:	"C:\Users\user\Desktop\pdfskills.exe"
Imagebase:	0x1f86cb20000
File size:	2'302'744 bytes
MD5 hash:	3FED63BA4527B108772F0B932D48A875
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	C, C++ or other language
Reputation:	low
Has exited:	false

Show Windows behavior

Execution Graph

Execution Coverage

Dynamic/Packed Code Coverage

Signature Coverage

Execution Coverage:	9.4%
Dynamic/Decrypted Code Coverage:	100%
Signature Coverage:	0%
Total number of Nodes:	3
Total number of Limit Nodes:	0

Show Legend

Hide Nodes/Edges

Executed Functions

Function 00007FF7BFEC459C Relevance: 1.6, APIs: 1, Instructions: 110
libraryCOMMON

Download Yara Rule

Control-flow Graph

Executed
Not Executed

APIs

LoadLibraryExW.KERNEL32 ref: 00007FF7BFEC463E

Memory Dump Source

Source File: 00000000.00000002.3159751686.00007FF7BFEB0000.00000040.00000800.00020000.00000000.sdmp, Offset: 00007FF7BFEB0000, based on PE: false

Joe Sandbox IDA Plugin

Snapshot File: hcaresult_0_2_7ff7bfeb0000_pdfskills.jbxd

Similarity

API ID: LibraryLoad
String ID:
API String ID: 1029625771-0
Opcode ID: a8ee120660fef809c4e8494fdba17463eb74290059847636625023a91bd293fa
Instruction ID: ac1d7737bd1e242ce82b075bf175e291422abc42d2add209910724b7b1ac77d6
Opcode Fuzzy Hash: a8ee120660fef809c4e8494fdba17463eb74290059847636625023a91bd293fa
Instruction Fuzzy Hash: 4E31013190CA4C8FDB19DF9C9849BE9BBF0EF66320F04422BD049C3252DB74A805CBA1

Function 00007FF7BFD9E2D3 Relevance: .1, Instructions: 121COMMON

Download Yara Rule

Memory Dump Source

Source File: 00000000.00000002.3159224741.00007FF7BFD9D000.00000040.00000800.00020000.00000000.sdmp, Offset: 00007FF7BFD9D000, based on PE: false

Joe Sandbox IDA Plugin

Snapshot File: hcaresult_0_2_7ff7bfd9d000_pdfskills.jbxd

Similarity

API ID:
String ID:
API String ID:
Opcode ID: 2fe6e20c4212a671822c630ae56298d81bdfa47cb49a2f62d0080a84425376bb
Instruction ID: 716a8a81320b006e4e34b471751e45c9a7a761cb9f67977eefa70bf77831f7b0
Opcode Fuzzy Hash: 2fe6e20c4212a671822c630ae56298d81bdfa47cb49a2f62d0080a84425376bb
Instruction Fuzzy Hash: E141043080DBC44FD756AB2DD8559927FB0EF53320B1906EFD088CB1A7D625A84AC7E2

Non-executed Functions

Function 00007FF7BFEB912E Relevance: .3, Instructions: 285COMMON

Download Yara Rule

Memory Dump Source

Source File: 00000000.00000002.3159751686.00007FF7BFEB0000.00000040.00000800.00020000.00000000.sdmp, Offset: 00007FF7BFEB0000, based on PE: false

Joe Sandbox IDA Plugin

Snapshot File: hcaresult_0_2_7ff7bfeb0000_pdfskills.jbxd

Similarity

API ID:
String ID:
API String ID:
Opcode ID: 13436b48f7357938437aa6f4cff738b68054c4540c07e686cdd250172e397392
Instruction ID: bf72b3ec107b79250f05f24caf6386cfbab6151091262f9f5926853f443cf54f
Opcode Fuzzy Hash: 13436b48f7357938437aa6f4cff738b68054c4540c07e686cdd250172e397392
Instruction Fuzzy Hash: 4B917E6050EAC5AFE343A7B854175E97BE1EF876203CA45FDD0898F0ABC62D5C8B8750

Function 00007FF7BFEB8E69 Relevance: .3, Instructions: 274COMMON

Download Yara Rule

Memory Dump Source

Source File: 00000000.00000002.3159751686.00007FF7BFEB0000.00000040.00000800.00020000.00000000.sdmp, Offset: 00007FF7BFEB0000, based on PE: false

Joe Sandbox IDA Plugin

Snapshot File: hcaresult_0_2_7ff7bfeb0000_pdfskills.jbxd

Similarity

API ID:
String ID:
API String ID:
Opcode ID: c031d08816b9b812f39e4907a7ff3312713186c4b11be61ff6ac8510b013a1fd
Instruction ID: 3f9c1618a4d6f9deccd7f30f6a8de71c33ec864e2001467f72747e757b012240
Opcode Fuzzy Hash: c031d08816b9b812f39e4907a7ff3312713186c4b11be61ff6ac8510b013a1fd
Instruction Fuzzy Hash: 9591B36060EBC56FE342A7B8542B5E97BE1EF876203CA45FDC0898F0A7D61C5C8B8751

Function 00007FF7BFEB1F95 Relevance: .3, Instructions: 270COMMON

Download Yara Rule

Memory Dump Source

Source File: 00000000.00000002.3159751686.00007FF7BFEB0000.00000040.00000800.00020000.00000000.sdmp, Offset: 00007FF7BFEB0000, based on PE: false

Joe Sandbox IDA Plugin

Snapshot File: hcaresult_0_2_7ff7bfeb0000_pdfskills.jbxd

Similarity

API ID:
String ID:
API String ID:
Opcode ID: 8af6f03ba5ad22eb3da46b853cacb519f3063f1671accde1c6bbb9314e967e5d
Instruction ID: 0cc62074cb8722e265de8d8dc9cfc08c61cf18a043143539ae3859fce5b22f46
Opcode Fuzzy Hash: 8af6f03ba5ad22eb3da46b853cacb519f3063f1671accde1c6bbb9314e967e5d
Instruction Fuzzy Hash: 048181A7A0D6D25FE313A76C98E60E57B60EFA3A2474902F3D5C48B0A7E91C1807D771

Description:	Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries. These interfaces and languages provide ways of interacting with computer systems and are a common feature across many different platforms. Most systems come with some built-in command-line interface and scripting capabilities, for example, macOS and Linux distributions include some flavor of Unix Shell while Windows installations include the Windows Command Shell and PowerShell .
Tactics:	Execution
Data Sources:	Command: Command Execution, Module: Module Load, Process: Process Creation, Process: Process Metadata, Script: Script Execution
Platforms:	Azure AD, Google Workspace, IaaS, Linux, macOS, Network, Office 365, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may execute their own malicious payloads by side-loading DLLs. Similar to DLL Search Order Hijacking , side-loading involves hijacking which DLL a program loads. But rather than just planting the DLL within the search order of a program then waiting for the victim application to be invoked, adversaries may directly side-load their payloads by planting then invoking a legitimate application that executes their payload(s).
Tactics:	Defense Evasion, Persistence, Privilege Escalation
Data Sources:	File: File Creation, File: File Modification, Module: Module Load, Process: Process Creation
Platforms:	Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may attempt to manipulate features of their artifacts to make them appear legitimate or benign to users and/or security tools. Masquerading occurs when the name or location of an object, legitimate or malicious, is manipulated or abused for the sake of evading defenses and observation. This may include manipulating file metadata, tricking users into misidentifying the file type, and giving legitimate task or service names.
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Metadata, File: File Modification, Image: Image Metadata, Process: OS API Execution, Process: Process Creation, Process: Process Metadata, Scheduled Job: Scheduled Job Metadata, Scheduled Job: Scheduled Job Modification, Service: Service Creation, Service: Service Metadata
Platforms:	Containers, Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may modify and/or disable security tools to avoid possible detection of their malware/tools and activities. This may take many forms, such as killing security software processes or services, modifying / deleting Registry keys or configuration files so that tools do not operate properly, or other methods to interfere with security tools scanning or reporting information. Adversaries may also disable updates to prevent the latest security patches from reaching tools on victim systems.
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, Driver: Driver Load, Process: Process Creation, Process: Process Termination, Sensor Health: Host Status, Service: Service Metadata, Windows Registry: Windows Registry Key Deletion, Windows Registry: Windows Registry Key Modification
Platforms:	Containers, IaaS, Linux, macOS, Network, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may employ various means to detect and avoid virtualization and analysis environments. This may include changing behaviors based on the results of checks for the presence of artifacts indicative of a virtual machine environment (VME) or sandbox. If the adversary detects a VME, they may alter their malware to disengage from the victim or conceal the core functions of the implant. They may also search for VME artifacts before dropping secondary or additional payloads. Adversaries may use the information learned from [Virtualization/Sandbox Evasion](https://attack.mitre.org/techniques/T1497) during automated discovery to shape follow-on behaviors.
Tactics:	Defense Evasion, Discovery
Data Sources:	Command: Command Execution, Process: OS API Execution, Process: Process Creation
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may attempt to make an executable or file difficult to discover or analyze by encrypting, encoding, or otherwise obfuscating its contents on the system or in transit. This is common behavior that can be used across different platforms and the network to evade defenses.
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Creation, File: File Metadata, Module: Module Load, Process: OS API Execution, Process: Process Creation, Script: Script Execution, WMI: WMI Creation, Windows Registry: Windows Registry Key Creation
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may modify file time attributes to hide new or changes to existing files. Timestomping is a technique that modifies the timestamps of a file (the modify, access, create, and change times), often to mimic files that are in the same folder. This is done, for example, on files that have been modified or created by the adversary so that they do not appear conspicuous to forensic investigators or file analysis tools.
Tactics:	Defense Evasion
Data Sources:	File: File Metadata, File: File Modification
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may attempt to get a listing of security software, configurations, defensive tools, and sensors that are installed on a system or in a cloud environment. This may include things such as firewall rules and anti-virus. Adversaries may use the information from Security Software Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	Command: Command Execution, Firewall: Firewall Enumeration, Firewall: Firewall Metadata, Process: OS API Execution, Process: Process Creation
Platforms:	Azure AD, Google Workspace, IaaS, Linux, macOS, Office 365, SaaS, Windows
Url:	Open detailed description by Mitre

Description:	An adversary may attempt to get detailed information about the operating system and hardware, including version, patches, hotfixes, service packs, and architecture. Adversaries may use the information from System Information Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	Command: Command Execution, Process: OS API Execution, Process: Process Creation
Platforms:	IaaS, Linux, macOS, Network, Windows
Url:	Open detailed description by Mitre

Description:	An adversary may compress and/or encrypt data that is collected prior to exfiltration. Compressing the data can help to obfuscate the collected data and minimize the amount of data sent over the network. Encryption can be used to hide information that is being exfiltrated from detection or make exfiltration less conspicuous upon inspection by a defender.
Tactics:	Collection
Data Sources:	Command: Command Execution, File: File Creation, Process: Process Creation, Script: Script Execution
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may employ a known encryption algorithm to conceal command and control traffic rather than relying on any inherent protections provided by a communication protocol. Despite the use of a secure algorithm, these implementations may be vulnerable to reverse engineering if secret keys are encoded and/or generated within malware samples/configuration files.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may use an OSI non-application layer protocol for communication between host and C2 server or among infected hosts within a network. The list of possible protocols is extensive.Specific examples include use of network layer protocols, such as the Internet Control Message Protocol (ICMP), transport layer protocols, such as the User Datagram Protocol (UDP), session layer protocols, such as Socket Secure (SOCKS), as well as redirected/tunneled protocols, such as Serial over LAN (SOL).
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Network, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may communicate using OSI application layer protocols to avoid detection/network filtering by blending in with existing traffic. Commands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

Loading Joe Sandbox Report ...

Warning!

Windows Analysis Report pdfskills.exe

Overview

General Information

Detection

Signatures

Classification

Process Tree

Malware Configuration

Yara Signatures

Sigma Signatures

Suricata Signatures

Joe Sandbox Signatures

Compliance

Networking

System Summary

Data Obfuscation

Hooking and other Techniques for Hiding and Protection

Malware Analysis System Evasion

Anti Debugging

Language, Device and Operating System Detection

Mitre Att&ck Matrix

Behavior Graph

Screenshots

Thumbnails

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Unpacked PE Files

Domains

URLs

Domains and IPs

Contacted Domains

Contacted URLs

URLs from Memory and Binaries

World Map of Contacted IPs

Public IPs

General Information

Warnings

Simulations

Behavior and APIs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

C:\Users\user\AppData\Local\PDFSkills\skillsUserId.txt

C:\Users\user\AppData\Roaming\SMCR\userId.txt

Static File Info

General

File Icon

Static PE Info

General

Authenticode Signature

Entrypoint Preview

Data Directories

Sections

Resources

Network Behavior

Network Port Distribution

TCP Packets

UDP Packets

DNS Queries

DNS Answers

HTTP Request Dependency Graph

HTTPS Proxied Packets

Statistics

CPU Usage

Memory Usage

High Level Behavior Distribution

back

System Behavior

Windows Analysis Report
pdfskills.exe