darkcomet | b427a607e12d9c6df8f3e006f4a91ac8692d1780cb7b9e1a4e4d9a44f22b14d7

Analysis

max time kernel
150s
max time network
126s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
19-04-2024 19:41

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General

Target

fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Size

242KB
MD5

fb07ce3a4707eee41808d5110e10dd84
SHA1

04dc8648694c514c6be3cd626e1d1e7d03573db1
SHA256

b427a607e12d9c6df8f3e006f4a91ac8692d1780cb7b9e1a4e4d9a44f22b14d7
SHA512

66dcbd3e24872711852bddd06e536732a207e05072cf7bc12bf71a43d63f7d0edca9c8aa8314059accdeafe628a79dc449264c88493e735c2b12557b4f1bd7f6
SSDEEP

6144:t1iJcYtR1HsvpSHY7KoSrfTNBuzZZcA1wnOLrMM4TZ:tkHcpSHY7VSrfT2/czO3HI

Score

10^/10

darkcomet persistence rat trojan upx

Malware Config

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe"	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exeexplorer.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	explorer.exe

UPX packed file 7 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/2896-0-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/2292-42-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/2896-41-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/2292-40-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/2292-39-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/2292-44-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/2292-81-0x0000000013140000-0x00000000131FC000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exenotepad.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe"	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe"	notepad.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe

description	pid	Process	procid_target
PID 2896 set thread context of 2292	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	29

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 8 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

explorer.exefb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	explorer.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	explorer.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exeexplorer.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exeexplorer.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeSecurityPrivilege	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeBackupPrivilege	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeRestorePrivilege	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeShutdownPrivilege	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeDebugPrivilege	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeUndockPrivilege	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: 33	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: 34	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: 35	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2292	explorer.exe
Token: SeSecurityPrivilege	2292	explorer.exe
Token: SeTakeOwnershipPrivilege	2292	explorer.exe
Token: SeLoadDriverPrivilege	2292	explorer.exe
Token: SeSystemProfilePrivilege	2292	explorer.exe
Token: SeSystemtimePrivilege	2292	explorer.exe
Token: SeProfSingleProcessPrivilege	2292	explorer.exe
Token: SeIncBasePriorityPrivilege	2292	explorer.exe
Token: SeCreatePagefilePrivilege	2292	explorer.exe
Token: SeBackupPrivilege	2292	explorer.exe
Token: SeRestorePrivilege	2292	explorer.exe
Token: SeShutdownPrivilege	2292	explorer.exe
Token: SeDebugPrivilege	2292	explorer.exe
Token: SeSystemEnvironmentPrivilege	2292	explorer.exe
Token: SeChangeNotifyPrivilege	2292	explorer.exe
Token: SeRemoteShutdownPrivilege	2292	explorer.exe
Token: SeUndockPrivilege	2292	explorer.exe
Token: SeManageVolumePrivilege	2292	explorer.exe
Token: SeImpersonatePrivilege	2292	explorer.exe
Token: SeCreateGlobalPrivilege	2292	explorer.exe
Token: 33	2292	explorer.exe
Token: 34	2292	explorer.exe
Token: 35	2292	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

explorer.exe

pid	Process
2292	explorer.exe

Suspicious use of WriteProcessMemory 53 IoCs

Processes:

fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exeexplorer.exe

description	pid	Process	procid_target
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2864	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	28
PID 2896 wrote to memory of 2292	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	29
PID 2896 wrote to memory of 2292	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	29
PID 2896 wrote to memory of 2292	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	29
PID 2896 wrote to memory of 2292	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	29
PID 2896 wrote to memory of 2292	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	29
PID 2896 wrote to memory of 2292	2896	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	29
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30
PID 2292 wrote to memory of 2716	2292	explorer.exe	30

C:\Users\Admin\AppData\Local\Temp\fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2896
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Adds Run key to start application
  PID:2864
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.exe"
  2⤵
  - Checks BIOS information in registry
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2292
- - C:\Windows\SysWOW64\notepad.exe
    C:\Windows\SysWOW64\notepad.exe
    3⤵
    PID:2716

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2292-39-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2292-40-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2292-82-0x0000000000130000-0x0000000000131000-memory.dmp

Filesize
4KB

Download
memory/2292-81-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2292-35-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2292-37-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2292-45-0x0000000000130000-0x0000000000131000-memory.dmp

Filesize
4KB

Download
memory/2292-44-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2292-42-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2716-80-0x0000000000520000-0x0000000000521000-memory.dmp

Filesize
4KB

Download
memory/2864-32-0x00000000002D0000-0x00000000002D1000-memory.dmp

Filesize
4KB

Download
memory/2864-3-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/2896-0-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2896-41-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2896-1-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download