darkcomet | d71f66fa4e06e143007d504194bc96750044f2c4c12e3686e7758bea4764dbf9

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
03-11-2024 02:15

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General

Target

892457023564bf407be05bdf7891e929_JaffaCakes118.exe
Size

1.1MB
MD5

892457023564bf407be05bdf7891e929
SHA1

b0c23dba1302e3d59f3caee7e80eb2b579c78dfd
SHA256

d71f66fa4e06e143007d504194bc96750044f2c4c12e3686e7758bea4764dbf9
SHA512

7f2e02ef498f57635281bedf48d9c32ab84445ae00d45a405a322fd11d1a148268f9eafee31b71a4519602cab3f989d5c353ace91e67890557a731171f4811ea
SSDEEP

12288:qOAxSAZG9JeapEZpzwWCs81+i6fXFeyivRphf2mppgg3+b3L/EGJmP+9OzLTIeJ8:qO6gJMQg18eBEan5qt1g

Score

10^/10

darkcomet discovery persistence rat trojan

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	vbc.exe

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	vbc.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	vbc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\Testing = "C:\\ProgramData\\Svg64.exe"	892457023564bf407be05bdf7891e929_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1628 set thread context of 2348	1628	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	31
PID 2348 set thread context of 2828	2348	vbc.exe	33

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	892457023564bf407be05bdf7891e929_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WINWORD.EXE

Office loads VBA resources, possible macro or embedded object present

Checks processor information in registry 2 TTPs 4 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	vbc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	vbc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	vbc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	vbc.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	vbc.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2800	WINWORD.EXE

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2348	vbc.exe
Token: SeSecurityPrivilege	2348	vbc.exe
Token: SeTakeOwnershipPrivilege	2348	vbc.exe
Token: SeLoadDriverPrivilege	2348	vbc.exe
Token: SeSystemProfilePrivilege	2348	vbc.exe
Token: SeSystemtimePrivilege	2348	vbc.exe
Token: SeProfSingleProcessPrivilege	2348	vbc.exe
Token: SeIncBasePriorityPrivilege	2348	vbc.exe
Token: SeCreatePagefilePrivilege	2348	vbc.exe
Token: SeBackupPrivilege	2348	vbc.exe
Token: SeRestorePrivilege	2348	vbc.exe
Token: SeShutdownPrivilege	2348	vbc.exe
Token: SeDebugPrivilege	2348	vbc.exe
Token: SeSystemEnvironmentPrivilege	2348	vbc.exe
Token: SeChangeNotifyPrivilege	2348	vbc.exe
Token: SeRemoteShutdownPrivilege	2348	vbc.exe
Token: SeUndockPrivilege	2348	vbc.exe
Token: SeManageVolumePrivilege	2348	vbc.exe
Token: SeImpersonatePrivilege	2348	vbc.exe
Token: SeCreateGlobalPrivilege	2348	vbc.exe
Token: 33	2348	vbc.exe
Token: 34	2348	vbc.exe
Token: 35	2348	vbc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2800	WINWORD.EXE
2800	WINWORD.EXE

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1628 wrote to memory of 2348	1628	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	31
PID 1628 wrote to memory of 2348	1628	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	31
PID 1628 wrote to memory of 2348	1628	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	31
PID 1628 wrote to memory of 2348	1628	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	31
PID 1628 wrote to memory of 2348	1628	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	31
PID 1628 wrote to memory of 2348	1628	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	31
PID 1628 wrote to memory of 2348	1628	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	31
PID 1628 wrote to memory of 2348	1628	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	31
PID 1628 wrote to memory of 2348	1628	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	31
PID 1628 wrote to memory of 2348	1628	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	31
PID 1628 wrote to memory of 2348	1628	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	31
PID 1628 wrote to memory of 2348	1628	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	31
PID 1628 wrote to memory of 2348	1628	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	31
PID 2348 wrote to memory of 2800	2348	vbc.exe	32
PID 2348 wrote to memory of 2800	2348	vbc.exe	32
PID 2348 wrote to memory of 2800	2348	vbc.exe	32
PID 2348 wrote to memory of 2800	2348	vbc.exe	32
PID 2348 wrote to memory of 2828	2348	vbc.exe	33
PID 2348 wrote to memory of 2828	2348	vbc.exe	33
PID 2348 wrote to memory of 2828	2348	vbc.exe	33
PID 2348 wrote to memory of 2828	2348	vbc.exe	33
PID 2348 wrote to memory of 2828	2348	vbc.exe	33
PID 2348 wrote to memory of 2828	2348	vbc.exe	33
PID 2800 wrote to memory of 1588	2800	WINWORD.EXE	36
PID 2800 wrote to memory of 1588	2800	WINWORD.EXE	36
PID 2800 wrote to memory of 1588	2800	WINWORD.EXE	36
PID 2800 wrote to memory of 1588	2800	WINWORD.EXE	36

C:\Users\Admin\AppData\Local\Temp\892457023564bf407be05bdf7891e929_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\892457023564bf407be05bdf7891e929_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1628
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2348
- - C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\AESTHETIC PRICE LIST 2011.DOC"
    3⤵
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: AddClipboardFormatListener
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2800
  - - C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      4⤵
      PID:1588
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    PID:2828

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\AESTHETIC PRICE LIST 2011.DOC

Filesize
19KB

MD5
e9be3a1a96662a958910c44f0b957496

SHA1
b5041253f94aebbf9b6b301e1128665c1bf5f223

SHA256
a739fb1caff2b7b52ea7b340562609a7e601a94c0218ee0c955776eb526dc5a8

SHA512
25b13e08aa38bb3a571ac334f32c64d3dd18b4ffba4aebb91ce88faae2fd3aada443da302b7f71e35cae544eb52aff90f4affa1fb1b1dcc45a6ce20e59da6075

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\UProof\ExcludeDictionaryEN0809.lex

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/1628-0-0x0000000074C41000-0x0000000074C42000-memory.dmp

Filesize
4KB

Download
memory/1628-1-0x0000000074C40000-0x00000000751EB000-memory.dmp

Filesize
5.7MB

Download
memory/1628-2-0x0000000074C40000-0x00000000751EB000-memory.dmp

Filesize
5.7MB

Download
memory/1628-27-0x0000000074C40000-0x00000000751EB000-memory.dmp

Filesize
5.7MB

Download
memory/2348-13-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2348-18-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2348-11-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2348-9-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2348-7-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2348-6-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2348-4-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2348-5-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2348-19-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2348-21-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2348-20-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/2348-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2348-3-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2348-38-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2348-17-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2800-30-0x000000006E8ED000-0x000000006E8F8000-memory.dmp

Filesize
44KB

Download
memory/2800-29-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2800-28-0x000000002F2E1000-0x000000002F2E2000-memory.dmp

Filesize
4KB

Download
memory/2800-47-0x000000006E8ED000-0x000000006E8F8000-memory.dmp

Filesize
44KB

Download
memory/2828-34-0x0000000000400000-0x000000000051E000-memory.dmp

Filesize
1.1MB

Download
memory/2828-37-0x0000000000400000-0x000000000051E000-memory.dmp

Filesize
1.1MB

Download
memory/2828-36-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads