darkcomet | 9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3

Analysis

max time kernel
119s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-12-2024 08:08

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General

Target

9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Size

659KB
MD5

ee0193c0477748c0de51b176c33f7380
SHA1

e5903f8afe91aedca6af2b6bcb938317734b0f1f
SHA256

9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3
SHA512

3938d63d21b141207c11d9baadf01321d2f47ffd6274f997379fd13d21da1e3bda0614ca44ecccefa4e26d7934b1078e9c9e8bd736af3d833d21962509c353a4
SSDEEP

12288:nfAFlAd0Z+89cxTGzO4AucTD8QP2lmFSrVs9LqnKp:fAQ6Zx9cxTmOrucTIEFSpOGk

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"	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.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	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.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"	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.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	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
File opened for modification	C:\Windows\SysWOW64\winupdate.exe	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
File opened for modification	C:\Windows\SysWOW64\	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
File opened for modification	C:\Windows\SysWOW64\winupdate.exe	notepad.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3108 set thread context of 3660	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.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	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.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\Identifier	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.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	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.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	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: SeSecurityPrivilege	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: SeTakeOwnershipPrivilege	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: SeLoadDriverPrivilege	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: SeSystemProfilePrivilege	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: SeSystemtimePrivilege	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: SeProfSingleProcessPrivilege	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: SeIncBasePriorityPrivilege	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: SeCreatePagefilePrivilege	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: SeBackupPrivilege	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: SeRestorePrivilege	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: SeShutdownPrivilege	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: SeDebugPrivilege	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: SeSystemEnvironmentPrivilege	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: SeChangeNotifyPrivilege	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: SeRemoteShutdownPrivilege	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: SeUndockPrivilege	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: SeManageVolumePrivilege	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: SeImpersonatePrivilege	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: SeCreateGlobalPrivilege	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: 33	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: 34	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: 35	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: 36	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
Token: SeIncreaseQuotaPrivilege	3660	explorer.exe
Token: SeSecurityPrivilege	3660	explorer.exe
Token: SeTakeOwnershipPrivilege	3660	explorer.exe
Token: SeLoadDriverPrivilege	3660	explorer.exe
Token: SeSystemProfilePrivilege	3660	explorer.exe
Token: SeSystemtimePrivilege	3660	explorer.exe
Token: SeProfSingleProcessPrivilege	3660	explorer.exe
Token: SeIncBasePriorityPrivilege	3660	explorer.exe
Token: SeCreatePagefilePrivilege	3660	explorer.exe
Token: SeBackupPrivilege	3660	explorer.exe
Token: SeRestorePrivilege	3660	explorer.exe
Token: SeShutdownPrivilege	3660	explorer.exe
Token: SeDebugPrivilege	3660	explorer.exe
Token: SeSystemEnvironmentPrivilege	3660	explorer.exe
Token: SeChangeNotifyPrivilege	3660	explorer.exe
Token: SeRemoteShutdownPrivilege	3660	explorer.exe
Token: SeUndockPrivilege	3660	explorer.exe
Token: SeManageVolumePrivilege	3660	explorer.exe
Token: SeImpersonatePrivilege	3660	explorer.exe
Token: SeCreateGlobalPrivilege	3660	explorer.exe
Token: 33	3660	explorer.exe
Token: 34	3660	explorer.exe
Token: 35	3660	explorer.exe
Token: 36	3660	explorer.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 4344	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	83
PID 3108 wrote to memory of 3660	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	84
PID 3108 wrote to memory of 3660	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	84
PID 3108 wrote to memory of 3660	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	84
PID 3108 wrote to memory of 3660	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	84
PID 3108 wrote to memory of 3660	3108	9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe	84

C:\Users\Admin\AppData\Local\Temp\9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.exe
"C:\Users\Admin\AppData\Local\Temp\9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3N.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:3108
- 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:4344
- 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:3660

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
ee0193c0477748c0de51b176c33f7380

SHA1
e5903f8afe91aedca6af2b6bcb938317734b0f1f

SHA256
9d79976a30875657745f9813d916b66fee5153f4177bb487808f3b7f4ca783f3

SHA512
3938d63d21b141207c11d9baadf01321d2f47ffd6274f997379fd13d21da1e3bda0614ca44ecccefa4e26d7934b1078e9c9e8bd736af3d833d21962509c353a4

Download Submit
memory/3108-0-0x0000000002210000-0x0000000002211000-memory.dmp

Filesize
4KB

Download
memory/3108-10-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/3660-8-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/3660-9-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/3660-7-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/3660-11-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/3660-14-0x0000000002930000-0x0000000002931000-memory.dmp

Filesize
4KB

Download
memory/3660-13-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/3660-12-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/3660-15-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/4344-2-0x0000000000B90000-0x0000000000B91000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads