Windows
Analysis Report
F3dll.exe.dll
Overview
General Information
Detection
Score: | 72 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Classification
- System is w10x64
- loaddll32.exe (PID: 1136 cmdline:
loaddll32. exe "C:\Us ers\user\D esktop\F3d ll.exe.dll " MD5: 51E6071F9CBA48E79F10C84515AAE618) - conhost.exe (PID: 2872 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - cmd.exe (PID: 5164 cmdline:
cmd.exe /C rundll32. exe "C:\Us ers\user\D esktop\F3d ll.exe.dll ",#1 MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) - rundll32.exe (PID: 4008 cmdline:
rundll32.e xe "C:\Use rs\user\De sktop\F3dl l.exe.dll" ,#1 MD5: 889B99C52A60DD49227C5E485A016679)
- cleanup
Source | Rule | Description | Author | Strings |
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JoeSecurity_GenericDownloader_1 | Yara detected Generic Downloader | Joe Security | ||
MALWARE_Win_DLAgent09 | Detects known downloader agent | ditekSHen |
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Click to jump to signature section
AV Detection |
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Source: | ReversingLabs: | |||
Source: | Virustotal: | Perma Link |
Source: | Integrated Neural Analysis Model: |
Source: | Joe Sandbox ML: |
Source: | Static PE information: |
Networking |
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Source: | File source: |
System Summary |
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Source: | Matched rule: |
Source: | Binary or memory string: |
Source: | Matched rule: |
Source: | Classification label: |
Source: | Mutant created: |
Source: | Static PE information: |
Source: | Static file information: |
Source: | Key opened: | Jump to behavior |
Source: | Process created: |
Source: | ReversingLabs: | ||
Source: | Virustotal: |
Source: | Process created: | |||
Source: | Process created: | |||
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Source: | Process created: | Jump to behavior | ||
Source: | Process created: | Jump to behavior |
Source: | Section loaded: | Jump to behavior | ||
Source: | Section loaded: | Jump to behavior | ||
Source: | Section loaded: | Jump to behavior |
Source: | Static PE information: |
Source: | Static PE information: |
Data Obfuscation |
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Source: | .Net Code: |
Source: | Process information set: | Jump to behavior |
Source: | Thread injection, dropped files, key value created, disk infection and DNS query: |
Source: | Last function: |
Source: | Thread delayed: | Jump to behavior |
Source: | Binary or memory string: |
Source: | Thread injection, dropped files, key value created, disk infection and DNS query: |
Source: | Process created: | Jump to behavior |
Reconnaissance | Resource Development | Initial Access | Execution | Persistence | Privilege Escalation | Defense Evasion | Credential Access | Discovery | Lateral Movement | Collection | Command and Control | Exfiltration | Impact |
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Gather Victim Identity Information | Acquire Infrastructure | Valid Accounts | Windows Management Instrumentation | 1 DLL Side-Loading | 11 Process Injection | 1 Rundll32 | OS Credential Dumping | 1 Security Software Discovery | Remote Services | Data from Local System | Data Obfuscation | Exfiltration Over Other Network Medium | Abuse Accessibility Features |
Credentials | Domains | Default Accounts | Scheduled Task/Job | Boot or Logon Initialization Scripts | 1 DLL Side-Loading | 1 Virtualization/Sandbox Evasion | LSASS Memory | 1 Virtualization/Sandbox Evasion | Remote Desktop Protocol | Data from Removable Media | Junk Data | Exfiltration Over Bluetooth | Network Denial of Service |
Email Addresses | DNS Server | Domain Accounts | At | Logon Script (Windows) | Logon Script (Windows) | 1 Software Packing | Security Account Manager | 1 System Information Discovery | SMB/Windows Admin Shares | Data from Network Shared Drive | Steganography | Automated Exfiltration | Data Encrypted for Impact |
Employee Names | Virtual Private Server | Local Accounts | Cron | Login Hook | Login Hook | 11 Process Injection | NTDS | System Network Configuration 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 DLL Side-Loading | LSA Secrets | Internet Connection Discovery | SSH | Keylogging | Fallback Channels | Scheduled Transfer | Data Encrypted for Impact |
This section contains all screenshots as thumbnails, including those not shown in the slideshow.
Source | Detection | Scanner | Label | Link |
---|---|---|---|---|
24% | ReversingLabs | Win32.Dropper.Generic | ||
34% | Virustotal | Browse | ||
100% | Joe Sandbox ML |
Joe Sandbox version: | 41.0.0 Charoite |
Analysis ID: | 1523126 |
Start date and time: | 2024-10-01 06:42:07 +02:00 |
Joe Sandbox product: | CloudBasic |
Overall analysis duration: | 0h 4m 21s |
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: | 8 |
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: |
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Analysis Mode: | default |
Analysis stop reason: | Timeout |
Sample name: | F3dll.exe.dll |
Detection: | MAL |
Classification: | mal72.troj.evad.winDLL@6/0@0/0 |
EGA Information: | Failed |
HCA Information: |
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Cookbook Comments: |
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- Exclude process from analysis (whitelisted): MpCmdRun.exe, WMIADAP.exe, SIHClient.exe, conhost.exe
- Excluded domains from analysis (whitelisted): ocsp.digicert.com, slscr.update.microsoft.com, ctldl.windowsupdate.com, fe3cr.delivery.mp.microsoft.com
- Not all processes where analyzed, report is missing behavior information
File type: | |
Entropy (8bit): | 4.631563176468829 |
TrID: |
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File name: | F3dll.exe.dll |
File size: | 8'704 bytes |
MD5: | 02ae2c79bc656c9ab75f82ef03f49069 |
SHA1: | 50a1110631b3a2c86730599edbfe205b01684361 |
SHA256: | d334f7d1af5388ab97f95f947ffe4e19e33b6221dcba5b89a67fb558392942a6 |
SHA512: | 097cd45e4533d58cbe0a2c7704a56d19354d3e65da286c7c95a53ae2a2e33d5d79e1c39c740c6a070d49171dd2721fda2e4db0f8d027b087318e1b69b67cbb3e |
SSDEEP: | 192:lASL0ohRcy45Z5DRXi6gEdFF6BKFIs0H/:1DhRcy45TDRX/Rysa/ |
TLSH: | C302B60897E84631E9BE5F356C32A24142B6B653DF73DBAC08C0646D5C322158E71F71 |
File Content Preview: | MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......PE..L....I.f.........." ..P.............^8... ........... ....................................`................................ |
Icon Hash: | 7ae282899bbab082 |
Entrypoint: | 0x1000385e |
Entrypoint Section: | .text |
Digitally signed: | false |
Imagebase: | 0x10000000 |
Subsystem: | windows cui |
Image File Characteristics: | EXECUTABLE_IMAGE, LARGE_ADDRESS_AWARE, DLL |
DLL Characteristics: | HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE |
Time Stamp: | 0x66FB49C0 [Tue Oct 1 01:00:48 2024 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: | dae02f32a21e03ce65412f6e56942daa |
Instruction |
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Name | Virtual Address | Virtual Size | Is in Section |
---|---|---|---|
IMAGE_DIRECTORY_ENTRY_EXPORT | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_IMPORT | 0x380c | 0x4f | .text |
IMAGE_DIRECTORY_ENTRY_RESOURCE | 0x4000 | 0x400 | .rsrc |
IMAGE_DIRECTORY_ENTRY_EXCEPTION | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_SECURITY | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_BASERELOC | 0x6000 | 0xc | .reloc |
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 | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_IAT | 0x2000 | 0x8 | .text |
IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR | 0x2008 | 0x48 | .text |
IMAGE_DIRECTORY_ENTRY_RESERVED | 0x0 | 0x0 |
Name | Virtual Address | Virtual Size | Raw Size | MD5 | Xored PE | ZLIB Complexity | File Type | Entropy | Characteristics |
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.text | 0x2000 | 0x1864 | 0x1a00 | 0672838573d44bf6b7a998f6fa415839 | False | 0.5216346153846154 | data | 5.180392942147002 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ |
.rsrc | 0x4000 | 0x400 | 0x400 | de5b8904977b3ef7e471e2d6bcb11c92 | False | 0.365234375 | data | 2.889412813597046 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ |
.reloc | 0x6000 | 0xc | 0x200 | 6aa1977e459ba6ab8df303f0ffedcb6c | False | 0.044921875 | data | 0.08153941234324169 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ |
Name | RVA | Size | Type | Language | Country | ZLIB Complexity |
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RT_VERSION | 0x4058 | 0x33c | data | 0.41545893719806765 |
DLL | Import |
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mscoree.dll | _CorDllMain |
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Target ID: | 0 |
Start time: | 00:42:57 |
Start date: | 01/10/2024 |
Path: | C:\Windows\System32\loaddll32.exe |
Wow64 process (32bit): | true |
Commandline: | |
Imagebase: | 0x5a0000 |
File size: | 126'464 bytes |
MD5 hash: | 51E6071F9CBA48E79F10C84515AAE618 |
Has elevated privileges: | true |
Has administrator privileges: | true |
Programmed in: | C, C++ or other language |
Reputation: | high |
Has exited: | true |
Target ID: | 1 |
Start time: | 00:42:57 |
Start date: | 01/10/2024 |
Path: | C:\Windows\System32\conhost.exe |
Wow64 process (32bit): | false |
Commandline: | |
Imagebase: | 0x7ff7699e0000 |
File size: | 862'208 bytes |
MD5 hash: | 0D698AF330FD17BEE3BF90011D49251D |
Has elevated privileges: | true |
Has administrator privileges: | true |
Programmed in: | C, C++ or other language |
Reputation: | high |
Has exited: | true |
Target ID: | 2 |
Start time: | 00:42:57 |
Start date: | 01/10/2024 |
Path: | C:\Windows\SysWOW64\cmd.exe |
Wow64 process (32bit): | true |
Commandline: | |
Imagebase: | 0x240000 |
File size: | 236'544 bytes |
MD5 hash: | D0FCE3AFA6AA1D58CE9FA336CC2B675B |
Has elevated privileges: | true |
Has administrator privileges: | true |
Programmed in: | C, C++ or other language |
Reputation: | high |
Has exited: | true |
Target ID: | 3 |
Start time: | 00:42:57 |
Start date: | 01/10/2024 |
Path: | C:\Windows\SysWOW64\rundll32.exe |
Wow64 process (32bit): | true |
Commandline: | |
Imagebase: | 0x370000 |
File size: | 61'440 bytes |
MD5 hash: | 889B99C52A60DD49227C5E485A016679 |
Has elevated privileges: | true |
Has administrator privileges: | true |
Programmed in: | C, C++ or other language |
Reputation: | high |
Has exited: | true |