darkcomet | d901e7642ce6df81c42f02571068de58a2955e5c299be950c0746f868a9399ec

Analysis

max time kernel
150s
max time network
122s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
26-06-2024 11:09

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General

Target

11cb4eb10453d144006a6f84d2a3048b_JaffaCakes118.exe
Size

1.3MB
MD5

11cb4eb10453d144006a6f84d2a3048b
SHA1

7967a0d2b34c4b86be783b8ce3b4c51691fafba3
SHA256

d901e7642ce6df81c42f02571068de58a2955e5c299be950c0746f868a9399ec
SHA512

03c33268b60eb9bf6b96acfafd64ef5ef5cca2e99ab05c31d93779afcb5ba9c88ce7b952f6a06f8127216b29ba275ec954fb126087ca63723a93f0abd0dc1572
SSDEEP

24576:BbCrhfsSO6omIC13GWK5m0c4RWj0KmSFe6In4uBCqGCLSrWbk:Bb0hkS2bCFSwgRWj0s2oqpZk

Score

10^/10

darkcomet evasion persistence rat trojan

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:

Service.exe

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

Modifies firewall policy service 3 TTPs 3 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

Processes:

explorer.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	explorer.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	explorer.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	explorer.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:

Service.exeexplorer.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate Service.exe
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate explorer.exe
Executes dropped EXE 1 IoCs

Processes:

Service.exe

pid process

3016 Service.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	Service.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	explorer.exe

pid	process
3016	Service.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

notepad.exeService.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1340930862-1405011213-2821322012-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\system32\\Update\\winupdate.exe"	notepad.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1340930862-1405011213-2821322012-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\system32\\Update\\winupdate.exe"	Service.exe

Drops file in System32 directory 4 IoCs

Processes:

Service.exenotepad.exe

description	ioc	process
File created	C:\Windows\SysWOW64\Update\winupdate.exe	Service.exe
File opened for modification	C:\Windows\SysWOW64\Update\winupdate.exe	Service.exe
File opened for modification	C:\Windows\SysWOW64\Update\winupdate.exe	notepad.exe
File opened for modification	C:\Windows\SysWOW64\Update\	Service.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Service.exe

description pid process target process

PID 3016 set thread context of 2464 3016 Service.exe explorer.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	pid	process	target process
PID 3016 set thread context of 2464	3016	Service.exe	explorer.exe

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.exeService.exe

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

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

Service.exeexplorer.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier Service.exe
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier explorer.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	Service.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

Service.exeexplorer.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	3016	Service.exe
Token: SeSecurityPrivilege	3016	Service.exe
Token: SeTakeOwnershipPrivilege	3016	Service.exe
Token: SeLoadDriverPrivilege	3016	Service.exe
Token: SeSystemProfilePrivilege	3016	Service.exe
Token: SeSystemtimePrivilege	3016	Service.exe
Token: SeProfSingleProcessPrivilege	3016	Service.exe
Token: SeIncBasePriorityPrivilege	3016	Service.exe
Token: SeCreatePagefilePrivilege	3016	Service.exe
Token: SeBackupPrivilege	3016	Service.exe
Token: SeRestorePrivilege	3016	Service.exe
Token: SeShutdownPrivilege	3016	Service.exe
Token: SeDebugPrivilege	3016	Service.exe
Token: SeSystemEnvironmentPrivilege	3016	Service.exe
Token: SeChangeNotifyPrivilege	3016	Service.exe
Token: SeRemoteShutdownPrivilege	3016	Service.exe
Token: SeUndockPrivilege	3016	Service.exe
Token: SeManageVolumePrivilege	3016	Service.exe
Token: SeImpersonatePrivilege	3016	Service.exe
Token: SeCreateGlobalPrivilege	3016	Service.exe
Token: 33	3016	Service.exe
Token: 34	3016	Service.exe
Token: 35	3016	Service.exe
Token: SeIncreaseQuotaPrivilege	2464	explorer.exe
Token: SeSecurityPrivilege	2464	explorer.exe
Token: SeTakeOwnershipPrivilege	2464	explorer.exe
Token: SeLoadDriverPrivilege	2464	explorer.exe
Token: SeSystemProfilePrivilege	2464	explorer.exe
Token: SeSystemtimePrivilege	2464	explorer.exe
Token: SeProfSingleProcessPrivilege	2464	explorer.exe
Token: SeIncBasePriorityPrivilege	2464	explorer.exe
Token: SeCreatePagefilePrivilege	2464	explorer.exe
Token: SeBackupPrivilege	2464	explorer.exe
Token: SeRestorePrivilege	2464	explorer.exe
Token: SeShutdownPrivilege	2464	explorer.exe
Token: SeDebugPrivilege	2464	explorer.exe
Token: SeSystemEnvironmentPrivilege	2464	explorer.exe
Token: SeChangeNotifyPrivilege	2464	explorer.exe
Token: SeRemoteShutdownPrivilege	2464	explorer.exe
Token: SeUndockPrivilege	2464	explorer.exe
Token: SeManageVolumePrivilege	2464	explorer.exe
Token: SeImpersonatePrivilege	2464	explorer.exe
Token: SeCreateGlobalPrivilege	2464	explorer.exe
Token: 33	2464	explorer.exe
Token: 34	2464	explorer.exe
Token: 35	2464	explorer.exe

Suspicious use of WriteProcessMemory 57 IoCs

Processes:

11cb4eb10453d144006a6f84d2a3048b_JaffaCakes118.exeService.exeexplorer.exe

description	pid	process	target process
PID 2924 wrote to memory of 3016	2924	11cb4eb10453d144006a6f84d2a3048b_JaffaCakes118.exe	Service.exe
PID 2924 wrote to memory of 3016	2924	11cb4eb10453d144006a6f84d2a3048b_JaffaCakes118.exe	Service.exe
PID 2924 wrote to memory of 3016	2924	11cb4eb10453d144006a6f84d2a3048b_JaffaCakes118.exe	Service.exe
PID 2924 wrote to memory of 3016	2924	11cb4eb10453d144006a6f84d2a3048b_JaffaCakes118.exe	Service.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2720	3016	Service.exe	notepad.exe
PID 3016 wrote to memory of 2464	3016	Service.exe	explorer.exe
PID 3016 wrote to memory of 2464	3016	Service.exe	explorer.exe
PID 3016 wrote to memory of 2464	3016	Service.exe	explorer.exe
PID 3016 wrote to memory of 2464	3016	Service.exe	explorer.exe
PID 3016 wrote to memory of 2464	3016	Service.exe	explorer.exe
PID 3016 wrote to memory of 2464	3016	Service.exe	explorer.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe
PID 2464 wrote to memory of 2584	2464	explorer.exe	notepad.exe

C:\Users\Admin\AppData\Local\Temp\11cb4eb10453d144006a6f84d2a3048b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\11cb4eb10453d144006a6f84d2a3048b_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2924

C:\Users\Admin\AppData\Local\Temp\Service.exe
"C:\Users\Admin\AppData\Local\Temp\Service.exe"
2⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Executes dropped EXE
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3016

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
- Adds Run key to start application
- Drops file in System32 directory
PID:2720

C:\Windows\SysWOW64\explorer.exe
"C:\Windows\SysWOW64\explorer.exe"
3⤵
- Modifies firewall policy service
- Checks BIOS information in registry
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2464

C:\Windows\SysWOW64\notepad.exe
C:\Windows\SysWOW64\notepad.exe
4⤵
PID:2584

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Service.exe
Filesize
691KB

MD5
081581fef9e34526d9c6eedc9cf694ba

SHA1
02a8949097003d4998e1a2cfe71956ea913d5671

SHA256
a51af90af9a2b35cbf5b6baaeadfed634ac2ff3956586f5fa2e59936f75aeeb2

SHA512
0384a11f4e80487ad5aa514b02423cfb278b54b2795be405a435ae056b43048b7bb3e3680ff23b1060a0050cc5b476a80f327d74661e0103f4935e3912bed9b3

Download Submit
memory/2464-55-0x0000000013140000-0x00000000131FE000-memory.dmp

Filesize
760KB

Download
memory/2464-52-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2464-53-0x0000000013140000-0x00000000131FE000-memory.dmp

Filesize
760KB

Download
memory/2464-50-0x0000000013140000-0x00000000131FE000-memory.dmp

Filesize
760KB

Download
memory/2720-14-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/2720-45-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/2924-3-0x000007FEF5770000-0x000007FEF610D000-memory.dmp

Filesize
9.6MB

Download
memory/2924-0-0x000007FEF5A2E000-0x000007FEF5A2F000-memory.dmp

Filesize
4KB

Download
memory/2924-2-0x000007FEF5770000-0x000007FEF610D000-memory.dmp

Filesize
9.6MB

Download
memory/2924-1-0x000007FEF5770000-0x000007FEF610D000-memory.dmp

Filesize
9.6MB

Download
memory/2924-97-0x000007FEF5A2E000-0x000007FEF5A2F000-memory.dmp

Filesize
4KB

Download
memory/2924-98-0x000007FEF5770000-0x000007FEF610D000-memory.dmp

Filesize
9.6MB

Download
memory/3016-11-0x0000000000310000-0x0000000000311000-memory.dmp

Filesize
4KB

Download
memory/3016-54-0x0000000013140000-0x00000000131FE000-memory.dmp

Filesize
760KB

Download