darkcomet | b427a607e12d9c6df8f3e006f4a91ac8692d1780cb7b9e1a4e4d9a44f22b14d7

Analysis

max time kernel
152s
max time network
152s
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 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 13 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1804-0-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral2/memory/1804-1-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral2/memory/1804-3-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral2/memory/4444-8-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral2/memory/4444-9-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral2/memory/4444-10-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral2/memory/4444-11-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral2/memory/4444-12-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral2/memory/4444-16-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral2/memory/4444-17-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral2/memory/4444-15-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral2/memory/1804-18-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral2/memory/4444-19-0x0000000013140000-0x00000000131FC000-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-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe"	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\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 1804 set thread context of 4444	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	91

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:

fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exeexplorer.exe

description	ioc	Process
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
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

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 48 IoCs

Processes:

fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exeexplorer.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeSecurityPrivilege	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeBackupPrivilege	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeRestorePrivilege	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeShutdownPrivilege	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeDebugPrivilege	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeUndockPrivilege	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: 33	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: 34	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: 35	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: 36	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	4444	explorer.exe
Token: SeSecurityPrivilege	4444	explorer.exe
Token: SeTakeOwnershipPrivilege	4444	explorer.exe
Token: SeLoadDriverPrivilege	4444	explorer.exe
Token: SeSystemProfilePrivilege	4444	explorer.exe
Token: SeSystemtimePrivilege	4444	explorer.exe
Token: SeProfSingleProcessPrivilege	4444	explorer.exe
Token: SeIncBasePriorityPrivilege	4444	explorer.exe
Token: SeCreatePagefilePrivilege	4444	explorer.exe
Token: SeBackupPrivilege	4444	explorer.exe
Token: SeRestorePrivilege	4444	explorer.exe
Token: SeShutdownPrivilege	4444	explorer.exe
Token: SeDebugPrivilege	4444	explorer.exe
Token: SeSystemEnvironmentPrivilege	4444	explorer.exe
Token: SeChangeNotifyPrivilege	4444	explorer.exe
Token: SeRemoteShutdownPrivilege	4444	explorer.exe
Token: SeUndockPrivilege	4444	explorer.exe
Token: SeManageVolumePrivilege	4444	explorer.exe
Token: SeImpersonatePrivilege	4444	explorer.exe
Token: SeCreateGlobalPrivilege	4444	explorer.exe
Token: 33	4444	explorer.exe
Token: 34	4444	explorer.exe
Token: 35	4444	explorer.exe
Token: 36	4444	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

explorer.exe

pid	Process
4444	explorer.exe

Suspicious use of WriteProcessMemory 50 IoCs

Processes:

fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exeexplorer.exe

description	pid	Process	procid_target
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 2848	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	90
PID 1804 wrote to memory of 4444	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	91
PID 1804 wrote to memory of 4444	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	91
PID 1804 wrote to memory of 4444	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	91
PID 1804 wrote to memory of 4444	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	91
PID 1804 wrote to memory of 4444	1804	fb07ce3a4707eee41808d5110e10dd84_JaffaCakes118.exe	91
PID 4444 wrote to memory of 3084	4444	explorer.exe	92
PID 4444 wrote to memory of 3084	4444	explorer.exe	92
PID 4444 wrote to memory of 3084	4444	explorer.exe	92
PID 4444 wrote to memory of 3084	4444	explorer.exe	92
PID 4444 wrote to memory of 3084	4444	explorer.exe	92
PID 4444 wrote to memory of 3084	4444	explorer.exe	92
PID 4444 wrote to memory of 3084	4444	explorer.exe	92
PID 4444 wrote to memory of 3084	4444	explorer.exe	92
PID 4444 wrote to memory of 3084	4444	explorer.exe	92
PID 4444 wrote to memory of 3084	4444	explorer.exe	92
PID 4444 wrote to memory of 3084	4444	explorer.exe	92
PID 4444 wrote to memory of 3084	4444	explorer.exe	92
PID 4444 wrote to memory of 3084	4444	explorer.exe	92
PID 4444 wrote to memory of 3084	4444	explorer.exe	92
PID 4444 wrote to memory of 3084	4444	explorer.exe	92
PID 4444 wrote to memory of 3084	4444	explorer.exe	92
PID 4444 wrote to memory of 3084	4444	explorer.exe	92
PID 4444 wrote to memory of 3084	4444	explorer.exe	92
PID 4444 wrote to memory of 3084	4444	explorer.exe	92
PID 4444 wrote to memory of 3084	4444	explorer.exe	92
PID 4444 wrote to memory of 3084	4444	explorer.exe	92
PID 4444 wrote to memory of 3084	4444	explorer.exe	92

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:1804
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Adds Run key to start application
  PID:2848
- 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:4444
- - C:\Windows\SysWOW64\notepad.exe
    C:\Windows\SysWOW64\notepad.exe
    3⤵
    PID:3084

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=5148 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
1⤵
PID:4736

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

Loading Replay Monitor...

Downloads

memory/1804-0-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/1804-1-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/1804-2-0x0000000000A50000-0x0000000000A51000-memory.dmp

Filesize
4KB

Download
memory/1804-3-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/1804-18-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2848-5-0x00000000009C0000-0x00000000009C1000-memory.dmp

Filesize
4KB

Download
memory/3084-14-0x0000000001290000-0x0000000001291000-memory.dmp

Filesize
4KB

Download
memory/4444-11-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/4444-10-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/4444-12-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/4444-13-0x0000000000E00000-0x0000000000E01000-memory.dmp

Filesize
4KB

Download
memory/4444-9-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/4444-16-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/4444-17-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/4444-15-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/4444-8-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/4444-19-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download