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Windows Analysis Report
essai.exe

Overview

General Information

Sample Name:	essai.exe
Analysis ID:	560086
MD5:	6f776e9782c231b5ff969a0f16c1821a
SHA1:	1f6fe84939da4051ce47b81130823665298a2b60
SHA256:	00165a5a0af9312110e3e579dc8e599f5da540a33f12f3e55b098653a8a4d043
Tags:	exe
Infos:

Detection

Score:	92
Range:	0 - 100
Whitelisted:	false
Confidence:	100%

Signatures

Antivirus / Scanner detection for submitted sample

Multi AV Scanner detection for submitted file

Antivirus detection for dropped file

Multi AV Scanner detection for dropped file

Drops PE files to the startup folder

Drops PE files with a suspicious file extension

PE file has a writeable .text section

Machine Learning detection for dropped file

Machine Learning detection for sample

Uses 32bit PE files

Drops files with a non-matching file extension (content does not match file extension)

Antivirus or Machine Learning detection for unpacked file

Drops PE files to the application program directory (C:\ProgramData)

PE file contains strange resources

Drops PE files

Tries to load missing DLLs

Drops PE files to the windows directory (C:\Windows)

Uses code obfuscation techniques (call, push, ret)

Creates files inside the system directory

PE file contains sections with non-standard names

Creates a start menu entry (Start Menu\Programs\Startup)

Detected potential crypto function

Stores files to the Windows start menu directory

Monitors certain registry keys / values for changes (often done to protect autostart functionality)

Dropped file seen in connection with other malware

Classification

Process Tree

System is w10x64

essai.exe (PID: 4628 cmdline: "C:\Users\user\Desktop\essai.exe" MD5: 6F776E9782C231B5FF969A0F16C1821A)

explorer.exe (PID: 4792 cmdline: C:\windows\explorer.exe MD5: AD5296B280E8F522A8A897C96BAB0E1D)

cleanup

Author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research): Data: EventID: 11, Image: C:\Users\user\Desktop\essai.exe, ProcessId: 4628, TargetFilename: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Dos Accelerator.pif

Jbx Signature Overview

• AV Detection
• Compliance
• System Summary
• Data Obfuscation
• Persistence and Installation Behavior
• Boot Survival
• Hooking and other Techniques for Hiding and Protection

Click to jump to signature section

Show All Signature Results

AV Detection

Antivirus / Scanner detection for submitted sample

Source: essai.exe

Avira: detected

Multi AV Scanner detection for submitted file

Source: essai.exe	Virustotal: Detection: 92%	Perma Link
Source: essai.exe	Metadefender: Detection: 85%	Perma Link
Source: essai.exe	ReversingLabs: Detection: 97%

Antivirus detection for dropped file

Source: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Dos Accelerator.pif	Avira: detection malicious, Label: TR/VB.Agent.IK
Source: C:\Windows\Dos.txt	Avira: detection malicious, Label: TR/VB.Agent.IK

Multi AV Scanner detection for dropped file

Source: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Dos Accelerator.pif	Virustotal: Detection: 92%	Perma Link
Source: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Dos Accelerator.pif	Metadefender: Detection: 85%	Perma Link
Source: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Dos Accelerator.pif	ReversingLabs: Detection: 97%
Source: C:\Windows\Dos.txt	Virustotal: Detection: 92%	Perma Link
Source: C:\Windows\Dos.txt	Metadefender: Detection: 85%	Perma Link
Source: C:\Windows\Dos.txt	ReversingLabs: Detection: 97%

Machine Learning detection for dropped file

Source: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Dos Accelerator.pif	Joe Sandbox ML: detected
Source: C:\Windows\Dos.txt	Joe Sandbox ML: detected

Machine Learning detection for sample

Source: essai.exe

Joe Sandbox ML: detected

Source: 1.2.essai.exe.400000.0.unpack	Avira: Label: TR/Crypt.CFI.Gen
Source: 1.0.essai.exe.400000.0.unpack	Avira: Label: TR/Crypt.CFI.Gen

Source: essai.exe

Static PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED

System Summary

PE file has a writeable .text section

Source: essai.exe	Static PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_WRITE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
Source: Dos Accelerator.pif.1.dr	Static PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_WRITE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
Source: Dos.txt.1.dr	Static PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_WRITE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ

Source: essai.exe

Static PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED

Source: essai.exe	Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
Source: essai.exe	Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
Source: essai.exe	Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
Source: Dos Accelerator.pif.1.dr	Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
Source: Dos Accelerator.pif.1.dr	Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
Source: Dos Accelerator.pif.1.dr	Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
Source: Dos.txt.1.dr	Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
Source: Dos.txt.1.dr	Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
Source: Dos.txt.1.dr	Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST

Source: C:\Windows\explorer.exe

Section loaded: cscui.dll

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

File created: C:\windows\Dos.txt

Jump to behavior

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

Code function: 1_2_004012B4

Source: Joe Sandbox View

Dropped File: C:\Windows\Dos.txt 00165A5A0AF9312110E3E579DC8E599F5DA540A33F12F3E55B098653A8A4D043

Source: essai.exe	Virustotal: Detection: 92%
Source: essai.exe	Metadefender: Detection: 85%
Source: essai.exe	ReversingLabs: Detection: 97%

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

File read: C:\Users\user\Desktop\essai.exe

Jump to behavior

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

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

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

Section loaded: C:\Windows\SysWOW64\msvbvm60.dll

Source: unknown	Process created: C:\Users\user\Desktop\essai.exe "C:\Users\user\Desktop\essai.exe"
Source: C:\Users\user\Desktop\essai.exe	Process created: C:\Windows\explorer.exe C:\windows\explorer.exe
Source: C:\Users\user\Desktop\essai.exe	Process created: C:\Windows\explorer.exe C:\windows\explorer.exe

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

Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{72C24DD5-D70A-438B-8A42-98424B88AFB8}\InProcServer32

Source: essai.exe	Binary or memory string: @*\AD:\RAM\dos\Project1.vbp
Source: essai.exe, 00000001.00000002.349142579.000000000040A000.00000004.00000001.01000000.00000003.sdmp	Binary or memory string: {@*\AD:\RAM\dos\Project1.vbp
Source: essai.exe, Dos Accelerator.pif.1.dr, Dos.txt.1.dr	Binary or memory string: @*\AD:\RAM\dos\Project1.vbpdv@

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

File created: C:\Users\user\AppData\Local\Temp\~DFEBBAEFA04F15025D.TMP

Jump to behavior

Source: classification engine

Classification label: mal92.adwa.winEXE@3/3@0/0

Source: C:\Users\user\Desktop\essai.exe	Process created: C:\Windows\explorer.exe
Source: C:\Users\user\Desktop\essai.exe	Process created: C:\Windows\explorer.exe

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

File read: C:\Users\desktop.ini

Jump to behavior

Source: C:\Users\user\Desktop\essai.exe	Code function: 1_2_00405C78 push ecx; retf 0000h
Source: C:\Users\user\Desktop\essai.exe	Code function: 1_2_00402E94 push esp; ret
Source: C:\Users\user\Desktop\essai.exe	Code function: 1_2_004047DE push esp; ret

Source: essai.exe	Static PE information: section name: kwvzuww
Source: essai.exe	Static PE information: section name: xnqjrdx
Source: Dos Accelerator.pif.1.dr	Static PE information: section name: kwvzuww
Source: Dos Accelerator.pif.1.dr	Static PE information: section name: xnqjrdx
Source: Dos.txt.1.dr	Static PE information: section name: kwvzuww
Source: Dos.txt.1.dr	Static PE information: section name: xnqjrdx

Persistence and Installation Behavior

Drops PE files with a suspicious file extension

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

File created: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Dos Accelerator.pif

Jump to dropped file

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

File created: C:\Windows\Dos.txt

Jump to dropped file

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

File created: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Dos Accelerator.pif

Jump to dropped file

Source: C:\Users\user\Desktop\essai.exe	File created: C:\Windows\Dos.txt			Jump to dropped file
Source: C:\Users\user\Desktop\essai.exe	File created: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Dos Accelerator.pif			Jump to dropped file

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

File created: C:\Windows\Dos.txt

Jump to dropped file

Boot Survival

Drops PE files to the startup folder

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

File created: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Dos Accelerator.pif

Jump to dropped file

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

File created: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Dos Accelerator.pif

Jump to behavior

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

File created: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Dos Accelerator.pif

Jump to behavior

Source: C:\Windows\explorer.exe

Registry key monitored for changes: HKEY_CURRENT_USER_Classes

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

Process information set: NOOPENFILEERRORBOX

Mitre Att&ck Matrix

Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Exfiltration	Command and Control	Network Effects	Remote Service Effects	Impact
Valid Accounts	Windows Management Instrumentation	1 DLL Side-Loading	1 Process Injection	13 Masquerading	OS Credential Dumping	1 Security Software Discovery	Remote Services	1 Archive Collected Data	Exfiltration Over Other Network Medium	1 Encrypted Channel	Eavesdrop on Insecure Network Communication	Remotely Track Device Without Authorization	Modify System Partition
Default Accounts	Scheduled Task/Job	12 Registry Run Keys / Startup Folder	1 DLL Side-Loading	1 Software Packing	LSASS Memory	1 Query Registry	Remote Desktop Protocol	Data from Removable Media	Exfiltration Over Bluetooth	Junk Data	Exploit SS7 to Redirect Phone Calls/SMS	Remotely Wipe Data Without Authorization	Device Lockout
Domain Accounts	At (Linux)	Logon Script (Windows)	12 Registry Run Keys / Startup Folder	1 Process Injection	Security Account Manager	1 File and Directory Discovery	SMB/Windows Admin Shares	Data from Network Shared Drive	Automated Exfiltration	Steganography	Exploit SS7 to Track Device Location	Obtain Device Cloud Backups	Delete Device Data
Local Accounts	At (Windows)	Logon Script (Mac)	Logon Script (Mac)	1 DLL Side-Loading	NTDS	1 System Information Discovery	Distributed Component Object Model	Input Capture	Scheduled Transfer	Protocol Impersonation	SIM Card Swap		Carrier Billing Fraud
Cloud Accounts	Cron	Network Logon Script	Network Logon Script	1 Obfuscated Files or Information	LSA Secrets	Remote System Discovery	SSH	Keylogging	Data Transfer Size Limits	Fallback Channels	Manipulate Device Communication		Manipulate App Store Rankings or Ratings

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

Thumbnails

This section contains all screenshots as thumbnails, including those not shown in the slideshow.

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
essai.exe	93%	Virustotal		Browse
essai.exe	86%	Metadefender		Browse
essai.exe	98%	ReversingLabs	Win32.Worm.Mofksys
essai.exe	100%	Avira	TR/VB.Agent.IK
essai.exe	100%	Joe Sandbox ML

Dropped Files

Source	Detection	Scanner	Label	Link
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Dos Accelerator.pif	100%	Avira	TR/VB.Agent.IK
C:\Windows\Dos.txt	100%	Avira	TR/VB.Agent.IK
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Dos Accelerator.pif	100%	Joe Sandbox ML
C:\Windows\Dos.txt	100%	Joe Sandbox ML
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Dos Accelerator.pif	93%	Virustotal		Browse
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Dos Accelerator.pif	86%	Metadefender		Browse
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Dos Accelerator.pif	98%	ReversingLabs	Win32.Worm.Mofksys
C:\Windows\Dos.txt	93%	Virustotal		Browse
C:\Windows\Dos.txt	86%	Metadefender		Browse
C:\Windows\Dos.txt	98%	ReversingLabs	Win32.Worm.Mofksys

Unpacked PE Files

Source	Detection	Scanner	Label	Link	Download
1.2.essai.exe.400000.0.unpack	100%	Avira	TR/Crypt.CFI.Gen		Download File
1.0.essai.exe.400000.0.unpack	100%	Avira	TR/Crypt.CFI.Gen		Download File

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Contacted Domains

⊘No contacted domains info

World Map of Contacted IPs

⊘No contacted IP infos

General Information

Joe Sandbox Version:	34.0.0 Boulder Opal
Analysis ID:	560086
Start date:	26.01.2022
Start time:	06:11:57
Joe Sandbox Product:	CloudBasic
Overall analysis duration:	0h 4m 23s
Hypervisor based Inspection enabled:	false
Report type:	light
Sample file name:	essai.exe
Cookbook file name:	default.jbs
Analysis system description:	Windows 10 64 bit v1803 with Office Professional Plus 2016, Chrome 85, IE 11, Adobe Reader DC 19, Java 8 Update 211
Number of analysed new started processes analysed:	3
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 HDC enabled AMSI enabled
Analysis Mode:	default
Analysis stop reason:	Timeout
Detection:	MAL
Classification:	mal92.adwa.winEXE@3/3@0/0
EGA Information:	Successful, ratio: 100%
HDC Information:	Successful, ratio: 3.5% (good quality ratio 0%) Quality average: 0% Quality standard deviation: 0%
HCA Information:	Successful, ratio: 100% Number of executed functions: 0 Number of non-executed functions: 0
Cookbook Comments:	Adjust boot time Enable AMSI Found application associated with file extension: .exe Stop behavior analysis, all processes terminated

Warnings

Exclude process from analysis (whitelisted): svchost.exe
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.

Simulations

Behavior and APIs

⊘No simulations

Joe Sandbox View / Context

IPs

⊘No context

Domains

⊘No context

ASNs

⊘No context

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Dos Accelerator.pif

Download File

Process:	C:\Users\user\Desktop\essai.exe
File Type:	PE32 executable (GUI) Intel 80386, for MS Windows
Category:	dropped
Size (bytes):	376832
Entropy (8bit):	2.6161997591789414
Encrypted:	false
SSDEEP:	3072:VMs3fGBjN1Jrpi0kOBzleK6VU6SaQFQMg6W:Vn3MN1JlveK6VUsQOj
MD5:	6F776E9782C231B5FF969A0F16C1821A
SHA1:	1F6FE84939DA4051CE47B81130823665298A2B60
SHA-256:	00165A5A0AF9312110E3E579DC8E599F5DA540A33F12F3E55B098653A8A4D043
SHA-512:	2B37FB088FC294B030D23B1CD45E13D513B389237EC966E93309DD66A830A6C1D38960F642CF33847D2AEE57EE669D783DA52B31CDC97ED90EBA03950D1F59E7
Malicious:	true
Antivirus:	Antivirus: Avira, Detection: 100% Antivirus: Joe Sandbox ML, Detection: 100% Antivirus: Virustotal, Detection: 93%, Browse Antivirus: Metadefender, Detection: 86%, Browse Antivirus: ReversingLabs, Detection: 98%
Reputation:	low
Preview:	MZ......................@.............$.....................h...........!..L.!This program cannot be runPE..L......F..........................................@.............................................................................(........ ..................................................................(... ....................................text............................... ....data...............................@....rsrc.... ....... ..................`...kwvzuww............................. ...xnqjrdx....................................A............MSVBVM60.DLL....................................................................................................................................................................................................................................................................................................................................................................................................................................

C:\Users\user\AppData\Local\Temp\~DFEBBAEFA04F15025D.TMP

Download File

Process:	C:\Users\user\Desktop\essai.exe
File Type:	Composite Document File V2 Document, Cannot read section info
Category:	dropped
Size (bytes):	26750
Entropy (8bit):	4.312743780697173
Encrypted:	false
SSDEEP:	192:SaAl+No9UH86KlVsV9P6AO1miRx8VYr4eZJgnda4/cUe3uS:Sbgl86+yyA2UVYrpZAB/5e3uS
MD5:	D1BE5FAEBD2D0EDA16E0BC3CED28BC4D
SHA1:	C0D48C5121FB07D8EBEECA7488B1965FB8E59AFE
SHA-256:	9A9641164188E3C6E379AC46389174E07FCF6D4E125B501F9D5A63189F907992
SHA-512:	BB7A895265A9DE1D3E5FAEEBE84CE2C8544B4ABF25FEECC3085F49FFF4596470D51AB989B410A2113CE3C7DBB60BE946DC23663DE027A0BC726BA7E2998DA3CF
Malicious:	false
Reputation:	low
Preview:	......................>...............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

C:\Windows\Dos.txt

Download File

Process:	C:\Users\user\Desktop\essai.exe
File Type:	PE32 executable (GUI) Intel 80386, for MS Windows
Category:	dropped
Size (bytes):	376832
Entropy (8bit):	2.6161997591789414
Encrypted:	false
SSDEEP:	3072:VMs3fGBjN1Jrpi0kOBzleK6VU6SaQFQMg6W:Vn3MN1JlveK6VUsQOj
MD5:	6F776E9782C231B5FF969A0F16C1821A
SHA1:	1F6FE84939DA4051CE47B81130823665298A2B60
SHA-256:	00165A5A0AF9312110E3E579DC8E599F5DA540A33F12F3E55B098653A8A4D043
SHA-512:	2B37FB088FC294B030D23B1CD45E13D513B389237EC966E93309DD66A830A6C1D38960F642CF33847D2AEE57EE669D783DA52B31CDC97ED90EBA03950D1F59E7
Malicious:	true
Antivirus:	Antivirus: Avira, Detection: 100% Antivirus: Joe Sandbox ML, Detection: 100% Antivirus: Virustotal, Detection: 93%, Browse Antivirus: Metadefender, Detection: 86%, Browse Antivirus: ReversingLabs, Detection: 98%
Reputation:	low
Preview:	MZ......................@.............$.....................h...........!..L.!This program cannot be runPE..L......F..........................................@.............................................................................(........ ..................................................................(... ....................................text............................... ....data...............................@....rsrc.... ....... ..................`...kwvzuww............................. ...xnqjrdx....................................A............MSVBVM60.DLL....................................................................................................................................................................................................................................................................................................................................................................................................................................

Static File Info

General

File type:	PE32 executable (GUI) Intel 80386, for MS Windows
Entropy (8bit):	2.6161997591789414
TrID:	Win32 Executable (generic) a (10002005/4) 99.96% Generic Win/DOS Executable (2004/3) 0.02% DOS Executable Generic (2002/1) 0.02% Autodesk FLIC Image File (extensions: flc, fli, cel) (7/3) 0.00%
File name:	essai.exe
File size:	376832
MD5:	6f776e9782c231b5ff969a0f16c1821a
SHA1:	1f6fe84939da4051ce47b81130823665298a2b60
SHA256:	00165a5a0af9312110e3e579dc8e599f5da540a33f12f3e55b098653a8a4d043
SHA512:	2b37fb088fc294b030d23b1cd45e13d513b389237ec966e93309dd66a830a6c1d38960f642cf33847d2aee57ee669d783da52b31cdc97ed90eba03950d1f59e7
SSDEEP:	3072:VMs3fGBjN1Jrpi0kOBzleK6VU6SaQFQMg6W:Vn3MN1JlveK6VUsQOj
File Content Preview:	MZ......................@.............$.....................h...........!..L.!This program cannot be runPE..L......F..........................................@.............................................................................(........ .........

File Icon


Icon Hash:	44e6fad2e07e9e60

Static PE Info

General

Entrypoint:	0x4012b4
Entrypoint Section:	.text
Digitally signed:	false
Imagebase:	0x400000
Subsystem:	windows gui
Image File Characteristics:	LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
DLL Characteristics:
Time Stamp:	0x46A4AA95 [Mon Jul 23 13:18:13 2007 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:	30e5df4fdb501cc0bf738d65c89185b6

Entrypoint Preview

Instruction
push 004076BCh
call 00007FD080B10165h
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
xor byte ptr [eax], al
add byte ptr [eax], al
cmp byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
push ds
and byte ptr [edx+5Fh], bh
pop ebx
add al, B6h
inc edx
mov edx, 2541FDB4h
add dword ptr [eax+60h], 00000000h
add byte ptr [eax], al
add dword ptr [eax], eax
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
js 00007FD080B101D5h
jbe 00007FD080B10172h
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
dec esp
xor dword ptr [eax], eax
add ch, byte ptr [edx]
push 7B5A9218h
mov bl, 49h
mov ah, 12h
pop ss
pop ebp
inc ecx
loope 00007FD080B101BBh
aaa
mov al, bh
dec esp
ficomp word ptr [ecx]
xor eax, dword ptr [eax-50h]
xchg eax, ecx
xchg eax, esp
scasd
test al, 85h
dec esp
cmp cl, byte ptr [edi-53h]
xor ebx, dword ptr [ecx-48EE309Ah]
or al, 00h
stosb
add byte ptr [eax-2Dh], ah
xchg eax, ebx
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
push cs
arpl word ptr [eax], ax
add dl, cl
bound eax, dword ptr [eax]
add byte ptr [eax], al
add eax, 726F4600h
insd
xor dword ptr [eax], eax
or eax, 46000501h
outsd
jc 00007FD080B101DFh
xor dword ptr [eax], eax
sbb dword ptr [ecx], eax
add byte ptr [edx+00h], al
and al, byte ptr [eax]
and eax, dword ptr [esi+00000062h]

Data Directories

Name	Virtual Address	Virtual Size	Is in Section
IMAGE_DIRECTORY_ENTRY_EXPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_IMPORT	0x95f4	0x28	.text
IMAGE_DIRECTORY_ENTRY_RESOURCE	0xb000	0x42000	.rsrc
IMAGE_DIRECTORY_ENTRY_EXCEPTION	0x0	0x0
IMAGE_DIRECTORY_ENTRY_SECURITY	0x0	0x0
IMAGE_DIRECTORY_ENTRY_BASERELOC	0x0	0x0
IMAGE_DIRECTORY_ENTRY_DEBUG	0x0	0x0
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	0x228	0x20
IMAGE_DIRECTORY_ENTRY_IAT	0x1000	0xfc	.text
IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR	0x0	0x0
IMAGE_DIRECTORY_ENTRY_RESERVED	0x0	0x0

Sections

Name	Virtual Address	Virtual Size	Raw Size	Xored PE	ZLIB Complexity	File Type	Entropy	Characteristics
.text	0x1000	0x9000	0x9000	False	0.310574001736	data	4.84291359329	IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_WRITE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
.data	0xa000	0x9f0	0x1000	False	0.00634765625	data	0.0	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_WRITE, IMAGE_SCN_MEM_READ
.rsrc	0xb000	0x42000	0x42000	False	0.130311908144	data	1.78643267268	IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_WRITE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
kwvzuww	0x4d000	0xf000	0xf000	False	0.437613932292	data	4.43065012785	IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_WRITE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
xnqjrdx	0x5c000	0x1000	0x0	False	0	empty	0.0	IMAGE_SCN_MEM_WRITE, IMAGE_SCN_MEM_READ

Resources

Name	RVA	Size	Type	Language	Country
RT_ICON	0x110a4	0x668	data
RT_ICON	0x10dbc	0x2e8	data
RT_ICON	0x10c94	0x128	GLS_BINARY_LSB_FIRST
RT_ICON	0xe6ec	0x25a8	dBase III DBT, version number 0, next free block index 40
RT_ICON	0xd844	0xea8	data
RT_ICON	0xc79c	0x10a8	dBase III DBT, version number 0, next free block index 40
RT_ICON	0xbef4	0x8a8	data
RT_ICON	0xba8c	0x468	GLS_BINARY_LSB_FIRST
RT_ICON	0xb524	0x568	GLS_BINARY_LSB_FIRST
RT_GROUP_ICON	0xb4a0	0x84	data
RT_VERSION	0xb270	0x230	data	English	United States

Imports

DLL

Import

MSVBVM60.DLL

_CIcos, _adj_fptan, __vbaVarMove, __vbaFreeVar, __vbaEnd, __vbaFreeVarList, _adj_fdiv_m64, __vbaNextEachVar, __vbaFreeObjList, _adj_fprem1, __vbaStrCat, __vbaHresultCheckObj, _adj_fdiv_m32, __vbaExitProc, __vbaObjSet, __vbaOnError, _adj_fdiv_m16i, _adj_fdivr_m16i, _CIsin, __vbaChkstk, EVENT_SINK_AddRef, __vbaStrCmp, __vbaVarTstEq, __vbaObjVar, _adj_fpatan, EVENT_SINK_Release, _CIsqrt, EVENT_SINK_QueryInterface, __vbaExceptHandler, _adj_fprem, _adj_fdivr_m64, __vbaFPException, __vbaStrVarVal, __vbaVarCat, _CIlog, __vbaNew2, _adj_fdiv_m32i, _adj_fdivr_m32i, __vbaFreeStrList, _adj_fdivr_m32, _adj_fdiv_r, __vbaVarSetVar, __vbaI4Var, __vbaLateMemCall, __vbaVarAdd, __vbaVarLateMemCallLd, _CIatan, __vbaStrMove, __vbaForEachVar, _allmul, _CItan, __vbaAryUnlock, _CIexp, __vbaFreeObj, __vbaFreeStr

Version Infos

Description	Data
Translation	0x0409 0x04b0
InternalName	essai
FileVersion	15.05.0088
ProductName	xcv
ProductVersion	15.05.0088
FileDescription	Dossier de fichiers
OriginalFilename	essai.exe

Possible Origin

Language of compilation system	Country where language is spoken	Map
English	United States

• essai.exe
• explorer.exe

Click to jump to process

Target ID:	1
Start time:	06:12:54
Start date:	26/01/2022
Path:	C:\Users\user\Desktop\essai.exe
Wow64 process (32bit):	true
Commandline:	"C:\Users\user\Desktop\essai.exe"
Imagebase:	0x400000
File size:	376832 bytes
MD5 hash:	6F776E9782C231B5FF969A0F16C1821A
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	Visual Basic
Reputation:	low

Show Windows behavior

Target ID:	2
Start time:	06:12:56
Start date:	26/01/2022
Path:	C:\Windows\explorer.exe
Wow64 process (32bit):	false
Commandline:	C:\windows\explorer.exe
Imagebase:	0x7ff6f22f0000
File size:	3933184 bytes
MD5 hash:	AD5296B280E8F522A8A897C96BAB0E1D
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	C, C++ or other language
Reputation:	high

Show Windows behavior

Description:	Adversaries may execute their own malicious payloads by hijacking the library manifest used to load DLLs. Adversaries may take advantage of vague references in the library manifest of a program by replacing a legitimate library with a malicious one, causing the operating system to load their malicious library when it is called for by the victim program.
Tactics:	Defense Evasion, Persistence, Privilege Escalation
Data Sources:	Loaded DLLs, Process monitoring, Process use of network
Platforms:	Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may achieve persistence by adding a program to a startup folder or referencing it with a Registry run key. Adding an entry to the "run keys" in the Registry or startup folder will cause the program referenced to be executed when a user logs in. These programs will be executed under the context of the user and will have the account's associated permissions level.
Tactics:	Persistence, Privilege Escalation
Data Sources:	File monitoring, Windows Registry
Platforms:	Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may inject code into processes in order to evade process-based defenses as well as possibly elevate privileges. Process injection is a method of executing arbitrary code in the address space of a separate live process. Running code in the context of another process may allow access to the process's memory, system/network resources, and possibly elevated privileges. Execution via process injection may also evade detection from security products since the execution is masked under a legitimate process.
Tactics:	Defense Evasion, Privilege Escalation
Data Sources:	API monitoring, DLL monitoring, File monitoring, Named Pipes, Process monitoring
Platforms:	Linux, macOS, 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:	Binary file metadata, File monitoring, Process command-line parameters, Process monitoring
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may perform software packing or virtual machine software protection to conceal their code. Software packing is a method of compressing or encrypting an executable. Packing an executable changes the file signature in an attempt to avoid signature-based detection. Most decompression techniques decompress the executable code in memory. Virtual machine software protection translates an executable's original code into a special format that only a special virtual machine can run. A virtual machine is then called to run this code.
Tactics:	Defense Evasion
Data Sources:	Binary file metadata
Platforms:	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:	Binary file metadata, Email gateway, Environment variable, File monitoring, Malware reverse engineering, Network intrusion detection system, Network protocol analysis, Process command-line parameters, Process monitoring, Process use of network, SSL/TLS inspection, Windows event logs
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:	AWS CloudTrail logs, Azure activity logs, File monitoring, Process command-line parameters, Process monitoring, Stackdriver logs
Platforms:	AWS, Azure, Azure AD, GCP, Linux, macOS, Office 365, SaaS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may interact with the Windows Registry to gather information about the system, configuration, and installed software.
Tactics:	Discovery
Data Sources:	Process command-line parameters, Process monitoring, Windows Registry
Platforms:	Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system. Adversaries may use the information from File and Directory 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:	File monitoring, Process command-line parameters, Process monitoring
Platforms:	Linux, macOS, 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:	AWS CloudTrail logs, Azure activity logs, Process command-line parameters, Process monitoring, Stackdriver logs
Platforms:	AWS, Azure, GCP, Linux, macOS, 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:	Binary file metadata, File monitoring, Process command-line parameters, Process monitoring
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:	Malware reverse engineering, Netflow/Enclave netflow, Packet capture, Process monitoring, Process use of network, SSL/TLS inspection
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 essai.exe

Overview

General Information

Detection

Signatures

Classification

Process Tree

Malware Configuration

Yara Overview

Sigma Overview

System Summary

Jbx Signature Overview

AV Detection

Compliance

System Summary

Data Obfuscation

Persistence and Installation Behavior

Boot Survival

Hooking and other Techniques for Hiding and Protection

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

World Map of Contacted IPs

General Information

Warnings

Simulations

Behavior and APIs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Dos Accelerator.pif

C:\Users\user\AppData\Local\Temp\~DFEBBAEFA04F15025D.TMP

C:\Windows\Dos.txt

Static File Info

General

File Icon

Static PE Info

General

Entrypoint Preview

Data Directories

Sections

Resources

Imports

Version Infos

Possible Origin

Network Behavior

Statistics

Behavior

System Behavior

Analysis Process: essai.exePID: 4628, Parent PID: 972

General

File Activities

File Created

File Deleted

File Written

File Read

Analysis Process: explorer.exePID: 4792, Parent PID: 4628

General

File Activities

File Created

Windows Analysis Report
essai.exe