darkcomet | b0f8d4006aecf713c6ec6e88ae3e25b038b86898d8b3a4cb2c32a282bbf3b3e1

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21-10-2024 13:29

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General

Target

66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Size

339KB
MD5

66d8f7b7825df5d614892d0cb35f69f6
SHA1

b3eca8a93cd7ce887130ddc5331dae34f9d0d02d
SHA256

b0f8d4006aecf713c6ec6e88ae3e25b038b86898d8b3a4cb2c32a282bbf3b3e1
SHA512

e182fd4c165be4c00c96b5749aa02e388e8177306f5abf58d390fc8abc1e2aa96a2123f4b694873d4c5f6c89418b03775f226ded0dfbe1dd223984ba70616511
SSDEEP

6144:6SfpB4Uotmp+j7PLRo/CD+xlogRZYddKs1PxAGRaCzCn:6SBB4h8+j7PL4Ca7oKYXPo+aCGn

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	66d8f7b7825df5d614892d0cb35f69f6_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:

66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exewinupdate.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdate.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

winupdate.exe

pid	Process
2392	winupdate.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 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

Processes:

winupdate.exe66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.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:

66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exewinupdate.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winupdate.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exewinupdate.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Modifies registry class 1 IoCs

Processes:

66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exewinupdate.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: SeSecurityPrivilege	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: SeSystemtimePrivilege	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: SeBackupPrivilege	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: SeRestorePrivilege	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: SeShutdownPrivilege	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: SeDebugPrivilege	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: SeUndockPrivilege	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: SeManageVolumePrivilege	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: SeImpersonatePrivilege	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: 33	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: 34	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: 35	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: 36	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2392	winupdate.exe
Token: SeSecurityPrivilege	2392	winupdate.exe
Token: SeTakeOwnershipPrivilege	2392	winupdate.exe
Token: SeLoadDriverPrivilege	2392	winupdate.exe
Token: SeSystemProfilePrivilege	2392	winupdate.exe
Token: SeSystemtimePrivilege	2392	winupdate.exe
Token: SeProfSingleProcessPrivilege	2392	winupdate.exe
Token: SeIncBasePriorityPrivilege	2392	winupdate.exe
Token: SeCreatePagefilePrivilege	2392	winupdate.exe
Token: SeBackupPrivilege	2392	winupdate.exe
Token: SeRestorePrivilege	2392	winupdate.exe
Token: SeShutdownPrivilege	2392	winupdate.exe
Token: SeDebugPrivilege	2392	winupdate.exe
Token: SeSystemEnvironmentPrivilege	2392	winupdate.exe
Token: SeChangeNotifyPrivilege	2392	winupdate.exe
Token: SeRemoteShutdownPrivilege	2392	winupdate.exe
Token: SeUndockPrivilege	2392	winupdate.exe
Token: SeManageVolumePrivilege	2392	winupdate.exe
Token: SeImpersonatePrivilege	2392	winupdate.exe
Token: SeCreateGlobalPrivilege	2392	winupdate.exe
Token: 33	2392	winupdate.exe
Token: 34	2392	winupdate.exe
Token: 35	2392	winupdate.exe
Token: 36	2392	winupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

winupdate.exe

pid	Process
2392	winupdate.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe

description	pid	Process	procid_target
PID 4032 wrote to memory of 2392	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe	87
PID 4032 wrote to memory of 2392	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe	87
PID 4032 wrote to memory of 2392	4032	66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe	87

C:\Users\Admin\AppData\Local\Temp\66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\66d8f7b7825df5d614892d0cb35f69f6_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Enumerates system info in registry
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4032
- C:\Windupdt\winupdate.exe
  "C:\Windupdt\winupdate.exe"
  2⤵
  - Checks BIOS information in registry
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2392

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windupdt\winupdate.exe

Filesize
339KB

MD5
66d8f7b7825df5d614892d0cb35f69f6

SHA1
b3eca8a93cd7ce887130ddc5331dae34f9d0d02d

SHA256
b0f8d4006aecf713c6ec6e88ae3e25b038b86898d8b3a4cb2c32a282bbf3b3e1

SHA512
e182fd4c165be4c00c96b5749aa02e388e8177306f5abf58d390fc8abc1e2aa96a2123f4b694873d4c5f6c89418b03775f226ded0dfbe1dd223984ba70616511

Download Submit
memory/2392-43-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2392-51-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2392-42-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2392-37-0x00000000022B0000-0x00000000022B1000-memory.dmp

Filesize
4KB

Download
memory/2392-38-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2392-39-0x00000000022B0000-0x00000000022B1000-memory.dmp

Filesize
4KB

Download
memory/2392-40-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2392-44-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2392-53-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2392-52-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2392-41-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2392-45-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2392-46-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2392-47-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2392-48-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2392-49-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2392-50-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/4032-0-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/4032-1-0x0000000000730000-0x0000000000731000-memory.dmp

Filesize
4KB

Download
memory/4032-36-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download