darkcomet | 1679a02cd35168d0784c978c37e543fee035d5a0b8976b0b58d9d8674f1ae75f

Analysis

max time kernel
162s
max time network
168s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
19-04-2024 02:05

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General

Target

f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Size

816KB
MD5

f94475e37a9cb16fee30ef48e7c35770
SHA1

0f8dbfcee390a49476fc9445d80c3c7c2a4175c7
SHA256

1679a02cd35168d0784c978c37e543fee035d5a0b8976b0b58d9d8674f1ae75f
SHA512

44e155a05a8c9ddbca1cb963369ff2248c9f6e0aa66b3879bd030a7a580bc6ed83b2c75772879e02a68b1fb092cce63007a4ec57703f9643fed421de1f87f977
SSDEEP

12288:z9AFlAd0Z+89cxTGzO4AucTD8QP2lmFSrVs9L3+l:xAQ6Zx9cxTmOrucTIEFSpOr

Score

10^/10

darkcomet 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:

f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Windupdt\\winupdate.exe"	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe

Drops file in Drivers directory 1 IoCs

Processes:

f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	f94475e37a9cb16fee30ef48e7c35770_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:

f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exeexplorer.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	explorer.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

notepad.exef94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Windupdt\\winupdate.exe"	notepad.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Windupdt\\winupdate.exe"	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe

description	pid	Process	procid_target
PID 3364 set thread context of 4544	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	90

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:

f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exeexplorer.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	f94475e37a9cb16fee30ef48e7c35770_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
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	explorer.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exeexplorer.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

explorer.exe

pid	Process
4544	explorer.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exeexplorer.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeSecurityPrivilege	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeSystemtimePrivilege	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeBackupPrivilege	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeRestorePrivilege	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeShutdownPrivilege	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeDebugPrivilege	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeUndockPrivilege	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeManageVolumePrivilege	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeImpersonatePrivilege	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: 33	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: 34	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: 35	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: 36	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	4544	explorer.exe
Token: SeSecurityPrivilege	4544	explorer.exe
Token: SeTakeOwnershipPrivilege	4544	explorer.exe
Token: SeLoadDriverPrivilege	4544	explorer.exe
Token: SeSystemProfilePrivilege	4544	explorer.exe
Token: SeSystemtimePrivilege	4544	explorer.exe
Token: SeProfSingleProcessPrivilege	4544	explorer.exe
Token: SeIncBasePriorityPrivilege	4544	explorer.exe
Token: SeCreatePagefilePrivilege	4544	explorer.exe
Token: SeBackupPrivilege	4544	explorer.exe
Token: SeRestorePrivilege	4544	explorer.exe
Token: SeShutdownPrivilege	4544	explorer.exe
Token: SeDebugPrivilege	4544	explorer.exe
Token: SeSystemEnvironmentPrivilege	4544	explorer.exe
Token: SeChangeNotifyPrivilege	4544	explorer.exe
Token: SeRemoteShutdownPrivilege	4544	explorer.exe
Token: SeUndockPrivilege	4544	explorer.exe
Token: SeManageVolumePrivilege	4544	explorer.exe
Token: SeImpersonatePrivilege	4544	explorer.exe
Token: SeCreateGlobalPrivilege	4544	explorer.exe
Token: 33	4544	explorer.exe
Token: 34	4544	explorer.exe
Token: 35	4544	explorer.exe
Token: 36	4544	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

explorer.exe

pid	Process
4544	explorer.exe

Suspicious use of WriteProcessMemory 28 IoCs

Processes:

f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe

description	pid	Process	procid_target
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 1844	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	89
PID 3364 wrote to memory of 4544	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	90
PID 3364 wrote to memory of 4544	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	90
PID 3364 wrote to memory of 4544	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	90
PID 3364 wrote to memory of 4544	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	90
PID 3364 wrote to memory of 4544	3364	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	90

C:\Users\Admin\AppData\Local\Temp\f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in Drivers directory
- 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:3364
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Adds Run key to start application
  PID:1844
- 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 behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4544

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3764 --field-trial-handle=2692,i,8678872182442199182,12502579059484928042,262144 --variations-seed-version /prefetch:8
1⤵
PID:4904

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/1844-3-0x0000000000770000-0x0000000000771000-memory.dmp

Filesize
4KB

Download
memory/3364-14-0x0000000013140000-0x000000001320C000-memory.dmp

Filesize
816KB

Download
memory/3364-1-0x00000000021F0000-0x00000000021F1000-memory.dmp

Filesize
4KB

Download
memory/3364-0-0x0000000013140000-0x000000001320C000-memory.dmp

Filesize
816KB

Download
memory/4544-10-0x0000000013140000-0x000000001320C000-memory.dmp

Filesize
816KB

Download
memory/4544-12-0x00000000025A0000-0x00000000025A1000-memory.dmp

Filesize
4KB

Download
memory/4544-11-0x0000000013140000-0x000000001320C000-memory.dmp

Filesize
816KB

Download
memory/4544-13-0x0000000013140000-0x000000001320C000-memory.dmp

Filesize
816KB

Download
memory/4544-15-0x0000000013140000-0x000000001320C000-memory.dmp

Filesize
816KB

Download
memory/4544-16-0x0000000013140000-0x000000001320C000-memory.dmp

Filesize
816KB

Download
memory/4544-17-0x0000000013140000-0x000000001320C000-memory.dmp

Filesize
816KB

Download
memory/4544-18-0x0000000013140000-0x000000001320C000-memory.dmp

Filesize
816KB

Download
memory/4544-19-0x00000000025A0000-0x00000000025A1000-memory.dmp

Filesize
4KB

Download