darkcomet | 522f7075dae8aa960da346bfc6c5bb556c8414f2aebb3d2f55df0298b9d960d9

Analysis

max time kernel
150s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06-12-2024 14:06

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General

Target

cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Size

635KB
MD5

cd65090fdc970524f35f3a2b2f1595fd
SHA1

1c6625d8507477abf087e825b54a099f46b04514
SHA256

522f7075dae8aa960da346bfc6c5bb556c8414f2aebb3d2f55df0298b9d960d9
SHA512

4b9f29a0793b80d37c7f1183755b185f33a2ceb3adea4ec521d31e3dde4ac48d7a150406ad980d5d6b7c874a29935d46908d27b6f127cdfde119ed330014074e
SSDEEP

12288:npwABK90BOe/x9lPAYvxPQVjdsAY2XjWlnlpTMMXG91uhKIXn/4:pwAcu99lPzvxP+Bsz2XjWTRMQckkIXng

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
Darkcomet family
darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\win32\\system.exe"	cd65090fdc970524f35f3a2b2f1595fd_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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	explorer.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\win32 = "C:\\Windows\\system32\\win32\\system.exe"	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\win32\system.exe	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\win32\system.exe	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\win32\	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2388 set thread context of 1620	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe	30

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	cd65090fdc970524f35f3a2b2f1595fd_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	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: SeSecurityPrivilege	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: SeBackupPrivilege	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: SeRestorePrivilege	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: SeShutdownPrivilege	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: SeDebugPrivilege	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: SeUndockPrivilege	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: 33	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: 34	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: 35	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	1620	explorer.exe
Token: SeSecurityPrivilege	1620	explorer.exe
Token: SeTakeOwnershipPrivilege	1620	explorer.exe
Token: SeLoadDriverPrivilege	1620	explorer.exe
Token: SeSystemProfilePrivilege	1620	explorer.exe
Token: SeSystemtimePrivilege	1620	explorer.exe
Token: SeProfSingleProcessPrivilege	1620	explorer.exe
Token: SeIncBasePriorityPrivilege	1620	explorer.exe
Token: SeCreatePagefilePrivilege	1620	explorer.exe
Token: SeBackupPrivilege	1620	explorer.exe
Token: SeRestorePrivilege	1620	explorer.exe
Token: SeShutdownPrivilege	1620	explorer.exe
Token: SeDebugPrivilege	1620	explorer.exe
Token: SeSystemEnvironmentPrivilege	1620	explorer.exe
Token: SeChangeNotifyPrivilege	1620	explorer.exe
Token: SeRemoteShutdownPrivilege	1620	explorer.exe
Token: SeUndockPrivilege	1620	explorer.exe
Token: SeManageVolumePrivilege	1620	explorer.exe
Token: SeImpersonatePrivilege	1620	explorer.exe
Token: SeCreateGlobalPrivilege	1620	explorer.exe
Token: 33	1620	explorer.exe
Token: 34	1620	explorer.exe
Token: 35	1620	explorer.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2388 wrote to memory of 1620	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe	30
PID 2388 wrote to memory of 1620	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe	30
PID 2388 wrote to memory of 1620	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe	30
PID 2388 wrote to memory of 1620	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe	30
PID 2388 wrote to memory of 1620	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe	30
PID 2388 wrote to memory of 1620	2388	cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\cd65090fdc970524f35f3a2b2f1595fd_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2388
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.exe"
  2⤵
  - Checks BIOS information in registry
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:1620

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

memory/1620-11-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1620-4-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1620-7-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1620-5-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1620-8-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1620-10-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1620-12-0x0000000000350000-0x0000000000351000-memory.dmp

Filesize
4KB

Download
memory/1620-13-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1620-14-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1620-15-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1620-16-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2388-0-0x0000000001CD0000-0x0000000001CD1000-memory.dmp

Filesize
4KB

Download
memory/2388-9-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads