darkcomet | bcf9b2e537ec33539e22a6eafde142dbf6ce7de47d8ad7bd615f700169c0ed7f

Analysis

max time kernel
149s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26-11-2024 08:08

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General

Target

a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Size

659KB
MD5

a0c6891d4fd92ec783931e4ecb69babd
SHA1

cc61f403dda94e4d33d7779bfe2df1d92e0968b9
SHA256

bcf9b2e537ec33539e22a6eafde142dbf6ce7de47d8ad7bd615f700169c0ed7f
SHA512

8ace55e82b8cdf5342899613963eb2c19075147377cc9e7e1daecd36da5dea7bda5fc0acc6d18d960ed3e0c9d4c55c4d7c8898ed097009e50dbc7358205e2c99
SSDEEP

12288:nnAFlAd0Z+89cxTGzO4AucTD8QP2lmFSrVs9LqnKp:nAQ6Zx9cxTmOrucTIEFSpOGk

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\\winupdate.exe"	a0c6891d4fd92ec783931e4ecb69babd_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	a0c6891d4fd92ec783931e4ecb69babd_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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Windows\\system32\\winupdate.exe"	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Windows\\system32\\winupdate.exe"	notepad.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\winupdate.exe	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\winupdate.exe	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\winupdate.exe	notepad.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1272 set thread context of 3736	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	84

System Location Discovery: System Language Discovery 1 TTPs 3 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	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.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\VendorIdentifier	explorer.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	a0c6891d4fd92ec783931e4ecb69babd_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

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	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: SeSecurityPrivilege	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: SeBackupPrivilege	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: SeRestorePrivilege	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: SeShutdownPrivilege	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: SeDebugPrivilege	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: SeUndockPrivilege	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: 33	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: 34	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: 35	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: 36	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3736	explorer.exe
Token: SeSecurityPrivilege	3736	explorer.exe
Token: SeTakeOwnershipPrivilege	3736	explorer.exe
Token: SeLoadDriverPrivilege	3736	explorer.exe
Token: SeSystemProfilePrivilege	3736	explorer.exe
Token: SeSystemtimePrivilege	3736	explorer.exe
Token: SeProfSingleProcessPrivilege	3736	explorer.exe
Token: SeIncBasePriorityPrivilege	3736	explorer.exe
Token: SeCreatePagefilePrivilege	3736	explorer.exe
Token: SeBackupPrivilege	3736	explorer.exe
Token: SeRestorePrivilege	3736	explorer.exe
Token: SeShutdownPrivilege	3736	explorer.exe
Token: SeDebugPrivilege	3736	explorer.exe
Token: SeSystemEnvironmentPrivilege	3736	explorer.exe
Token: SeChangeNotifyPrivilege	3736	explorer.exe
Token: SeRemoteShutdownPrivilege	3736	explorer.exe
Token: SeUndockPrivilege	3736	explorer.exe
Token: SeManageVolumePrivilege	3736	explorer.exe
Token: SeImpersonatePrivilege	3736	explorer.exe
Token: SeCreateGlobalPrivilege	3736	explorer.exe
Token: 33	3736	explorer.exe
Token: 34	3736	explorer.exe
Token: 35	3736	explorer.exe
Token: 36	3736	explorer.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 1092	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	83
PID 1272 wrote to memory of 3736	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	84
PID 1272 wrote to memory of 3736	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	84
PID 1272 wrote to memory of 3736	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	84
PID 1272 wrote to memory of 3736	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	84
PID 1272 wrote to memory of 3736	1272	a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe	84

C:\Users\Admin\AppData\Local\Temp\a0c6891d4fd92ec783931e4ecb69babd_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a0c6891d4fd92ec783931e4ecb69babd_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:1272
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  PID:1092
- 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:3736

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

C:\Windows\SysWOW64\winupdate.exe

Filesize
659KB

MD5
a0c6891d4fd92ec783931e4ecb69babd

SHA1
cc61f403dda94e4d33d7779bfe2df1d92e0968b9

SHA256
bcf9b2e537ec33539e22a6eafde142dbf6ce7de47d8ad7bd615f700169c0ed7f

SHA512
8ace55e82b8cdf5342899613963eb2c19075147377cc9e7e1daecd36da5dea7bda5fc0acc6d18d960ed3e0c9d4c55c4d7c8898ed097009e50dbc7358205e2c99

Download Submit
memory/1092-2-0x0000000000530000-0x0000000000531000-memory.dmp

Filesize
4KB

Download
memory/1272-0-0x00000000021E0000-0x00000000021E1000-memory.dmp

Filesize
4KB

Download
memory/1272-10-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/3736-7-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/3736-8-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/3736-9-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/3736-11-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/3736-12-0x00000000013B0000-0x00000000013B1000-memory.dmp

Filesize
4KB

Download
memory/3736-13-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/3736-14-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/3736-15-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads