darkcomet | f72e6e484dabb130c855cac76521b2d277a9bbec731e0731cc5d80a18caf2a74

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21/10/2024, 18:42

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General

Target

671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Size

846KB
MD5

671385be9a119a5b7e781053f27bc2a6
SHA1

c329a921aad2533bff0b8b9cbc8d66d382321dbc
SHA256

f72e6e484dabb130c855cac76521b2d277a9bbec731e0731cc5d80a18caf2a74
SHA512

8574682dee266d6c6762e147653e650ed9e5291d5f7acfee64ef475cd8f66df1f64bb48031ec8700da9e59932e9cdba4c475a1f004d71c87bfe4fc217c70bef5
SSDEEP

12288:rBgdTKT2klzidVS/cp6YmUxWEdZZ1mer7t8d2oNpbuzbc1dvZRtxMk:aeVlxcEYm4m2oNpqz4TZR

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

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"	671385be9a119a5b7e781053f27bc2a6_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	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdate.exe

Executes dropped EXE 2 IoCs

pid	Process
2700	winupdate.exe
2312	winupdate.exe

Loads dropped DLL 8 IoCs

pid	Process
2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
2700	winupdate.exe
2700	winupdate.exe
2700	winupdate.exe
2700	winupdate.exe
2312	winupdate.exe
2312	winupdate.exe
2312	winupdate.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe"	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2888 set thread context of 2248	2888	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe	30
PID 2700 set thread context of 2312	2700	winupdate.exe	32

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 4 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	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.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\Identifier	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winupdate.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	671385be9a119a5b7e781053f27bc2a6_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

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	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2312	winupdate.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: SeSecurityPrivilege	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: SeBackupPrivilege	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: SeRestorePrivilege	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: SeShutdownPrivilege	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: SeDebugPrivilege	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: SeUndockPrivilege	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: 33	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: 34	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: 35	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2312	winupdate.exe
Token: SeSecurityPrivilege	2312	winupdate.exe
Token: SeTakeOwnershipPrivilege	2312	winupdate.exe
Token: SeLoadDriverPrivilege	2312	winupdate.exe
Token: SeSystemProfilePrivilege	2312	winupdate.exe
Token: SeSystemtimePrivilege	2312	winupdate.exe
Token: SeProfSingleProcessPrivilege	2312	winupdate.exe
Token: SeIncBasePriorityPrivilege	2312	winupdate.exe
Token: SeCreatePagefilePrivilege	2312	winupdate.exe
Token: SeBackupPrivilege	2312	winupdate.exe
Token: SeRestorePrivilege	2312	winupdate.exe
Token: SeShutdownPrivilege	2312	winupdate.exe
Token: SeDebugPrivilege	2312	winupdate.exe
Token: SeSystemEnvironmentPrivilege	2312	winupdate.exe
Token: SeChangeNotifyPrivilege	2312	winupdate.exe
Token: SeRemoteShutdownPrivilege	2312	winupdate.exe
Token: SeUndockPrivilege	2312	winupdate.exe
Token: SeManageVolumePrivilege	2312	winupdate.exe
Token: SeImpersonatePrivilege	2312	winupdate.exe
Token: SeCreateGlobalPrivilege	2312	winupdate.exe
Token: 33	2312	winupdate.exe
Token: 34	2312	winupdate.exe
Token: 35	2312	winupdate.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 2888 wrote to memory of 2248	2888	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe	30
PID 2888 wrote to memory of 2248	2888	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe	30
PID 2888 wrote to memory of 2248	2888	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe	30
PID 2888 wrote to memory of 2248	2888	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe	30
PID 2888 wrote to memory of 2248	2888	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe	30
PID 2888 wrote to memory of 2248	2888	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe	30
PID 2248 wrote to memory of 2700	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe	31
PID 2248 wrote to memory of 2700	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe	31
PID 2248 wrote to memory of 2700	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe	31
PID 2248 wrote to memory of 2700	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe	31
PID 2248 wrote to memory of 2700	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe	31
PID 2248 wrote to memory of 2700	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe	31
PID 2248 wrote to memory of 2700	2248	671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe	31
PID 2700 wrote to memory of 2312	2700	winupdate.exe	32
PID 2700 wrote to memory of 2312	2700	winupdate.exe	32
PID 2700 wrote to memory of 2312	2700	winupdate.exe	32
PID 2700 wrote to memory of 2312	2700	winupdate.exe	32
PID 2700 wrote to memory of 2312	2700	winupdate.exe	32
PID 2700 wrote to memory of 2312	2700	winupdate.exe	32
PID 2700 wrote to memory of 2312	2700	winupdate.exe	32
PID 2700 wrote to memory of 2312	2700	winupdate.exe	32
PID 2700 wrote to memory of 2312	2700	winupdate.exe	32

C:\Users\Admin\AppData\Local\Temp\671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2888
- C:\Users\Admin\AppData\Local\Temp\671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\671385be9a119a5b7e781053f27bc2a6_JaffaCakes118.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Loads dropped DLL
  - Adds Run key to start application
  - 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:2248
- - C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe
    "C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2700
  - - C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe
      "C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe"
      4⤵
      Checks BIOS information in registry
      Executes dropped EXE
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Enumerates system info in registry
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of AdjustPrivilegeToken
      PID:2312

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

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Downloads

\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe

Filesize
846KB

MD5
671385be9a119a5b7e781053f27bc2a6

SHA1
c329a921aad2533bff0b8b9cbc8d66d382321dbc

SHA256
f72e6e484dabb130c855cac76521b2d277a9bbec731e0731cc5d80a18caf2a74

SHA512
8574682dee266d6c6762e147653e650ed9e5291d5f7acfee64ef475cd8f66df1f64bb48031ec8700da9e59932e9cdba4c475a1f004d71c87bfe4fc217c70bef5

Download Submit
memory/2248-21-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2248-6-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2248-1-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2248-4-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2248-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2248-7-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2248-8-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2248-10-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2248-9-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2312-40-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2312-44-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2312-38-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2312-41-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2312-53-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2312-39-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2312-37-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2312-32-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2312-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2312-42-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2312-43-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2312-52-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2312-45-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2312-46-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2312-47-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2312-48-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2312-49-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2312-50-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2312-51-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2700-31-0x0000000000400000-0x00000000004DA000-memory.dmp

Filesize
872KB

Download
memory/2888-5-0x0000000000400000-0x00000000004DA000-memory.dmp

Filesize
872KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads