darkcomet | f0539dbd9983c4740f8e362bc4f472ce0106cc0d82249959d865f7d5163a75e6

Analysis

max time kernel
150s
max time network
123s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
14/01/2024, 12:56

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General

Target

5b4a75ebe77759cafcc68393e0f64525.exe
Size

757KB
MD5

5b4a75ebe77759cafcc68393e0f64525
SHA1

1d866dd7d8d263b89c6461e3bef32b82af24c0f0
SHA256

f0539dbd9983c4740f8e362bc4f472ce0106cc0d82249959d865f7d5163a75e6
SHA512

82d722d97de006e59736b8fcdf68e558afd83decf65e9ed172153b42718c1a29b0dd7af74be6c19d7bad1eadf6434d48f64cc7c93481eaf65e6f52a57491176c
SSDEEP

12288:Z9AFlAd0Z+89cxTGzO4AucTD8QP2lmFSrVs9LqnKwIG:fAQ6Zx9cxTmOrucTIEFSpOGZ

Score

10^/10

darkcomet 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\\Microsoft\\Windows\\Cookies\\Windupdt\\winupdate.exe"	5b4a75ebe77759cafcc68393e0f64525.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	5b4a75ebe77759cafcc68393e0f64525.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-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Cookies\\Windupdt\\winupdate.exe"	5b4a75ebe77759cafcc68393e0f64525.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Cookies\\Windupdt\\winupdate.exe"	notepad.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2112 set thread context of 2680	2112	5b4a75ebe77759cafcc68393e0f64525.exe	29

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

System Information Discovery
T1082

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	5b4a75ebe77759cafcc68393e0f64525.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	5b4a75ebe77759cafcc68393e0f64525.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	5b4a75ebe77759cafcc68393e0f64525.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	5b4a75ebe77759cafcc68393e0f64525.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	5b4a75ebe77759cafcc68393e0f64525.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: SeSecurityPrivilege	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: SeTakeOwnershipPrivilege	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: SeLoadDriverPrivilege	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: SeSystemProfilePrivilege	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: SeSystemtimePrivilege	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: SeProfSingleProcessPrivilege	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: SeIncBasePriorityPrivilege	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: SeCreatePagefilePrivilege	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: SeBackupPrivilege	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: SeRestorePrivilege	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: SeShutdownPrivilege	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: SeDebugPrivilege	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: SeSystemEnvironmentPrivilege	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: SeChangeNotifyPrivilege	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: SeRemoteShutdownPrivilege	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: SeUndockPrivilege	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: SeManageVolumePrivilege	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: SeImpersonatePrivilege	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: SeCreateGlobalPrivilege	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: 33	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: 34	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: 35	2112	5b4a75ebe77759cafcc68393e0f64525.exe
Token: SeIncreaseQuotaPrivilege	2680	explorer.exe
Token: SeSecurityPrivilege	2680	explorer.exe
Token: SeTakeOwnershipPrivilege	2680	explorer.exe
Token: SeLoadDriverPrivilege	2680	explorer.exe
Token: SeSystemProfilePrivilege	2680	explorer.exe
Token: SeSystemtimePrivilege	2680	explorer.exe
Token: SeProfSingleProcessPrivilege	2680	explorer.exe
Token: SeIncBasePriorityPrivilege	2680	explorer.exe
Token: SeCreatePagefilePrivilege	2680	explorer.exe
Token: SeBackupPrivilege	2680	explorer.exe
Token: SeRestorePrivilege	2680	explorer.exe
Token: SeShutdownPrivilege	2680	explorer.exe
Token: SeDebugPrivilege	2680	explorer.exe
Token: SeSystemEnvironmentPrivilege	2680	explorer.exe
Token: SeChangeNotifyPrivilege	2680	explorer.exe
Token: SeRemoteShutdownPrivilege	2680	explorer.exe
Token: SeUndockPrivilege	2680	explorer.exe
Token: SeManageVolumePrivilege	2680	explorer.exe
Token: SeImpersonatePrivilege	2680	explorer.exe
Token: SeCreateGlobalPrivilege	2680	explorer.exe
Token: 33	2680	explorer.exe
Token: 34	2680	explorer.exe
Token: 35	2680	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2680	explorer.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 1224	2112	5b4a75ebe77759cafcc68393e0f64525.exe	28
PID 2112 wrote to memory of 2680	2112	5b4a75ebe77759cafcc68393e0f64525.exe	29
PID 2112 wrote to memory of 2680	2112	5b4a75ebe77759cafcc68393e0f64525.exe	29
PID 2112 wrote to memory of 2680	2112	5b4a75ebe77759cafcc68393e0f64525.exe	29
PID 2112 wrote to memory of 2680	2112	5b4a75ebe77759cafcc68393e0f64525.exe	29
PID 2112 wrote to memory of 2680	2112	5b4a75ebe77759cafcc68393e0f64525.exe	29
PID 2112 wrote to memory of 2680	2112	5b4a75ebe77759cafcc68393e0f64525.exe	29

C:\Users\Admin\AppData\Local\Temp\5b4a75ebe77759cafcc68393e0f64525.exe
"C:\Users\Admin\AppData\Local\Temp\5b4a75ebe77759cafcc68393e0f64525.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Adds Run key to start application
  PID:1224
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.exe"
  2⤵
  - Checks BIOS information in registry
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2680

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\Windupdt\winupdate.exe

Filesize
757KB

MD5
5b4a75ebe77759cafcc68393e0f64525

SHA1
1d866dd7d8d263b89c6461e3bef32b82af24c0f0

SHA256
f0539dbd9983c4740f8e362bc4f472ce0106cc0d82249959d865f7d5163a75e6

SHA512
82d722d97de006e59736b8fcdf68e558afd83decf65e9ed172153b42718c1a29b0dd7af74be6c19d7bad1eadf6434d48f64cc7c93481eaf65e6f52a57491176c

Download Submit
memory/1224-2-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/1224-33-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/2112-43-0x0000000013140000-0x000000001320F000-memory.dmp

Filesize
828KB

Download
memory/2112-0-0x0000000000290000-0x0000000000291000-memory.dmp

Filesize
4KB

Download
memory/2680-45-0x0000000013140000-0x000000001320F000-memory.dmp

Filesize
828KB

Download
memory/2680-42-0x0000000013140000-0x000000001320F000-memory.dmp

Filesize
828KB

Download
memory/2680-44-0x0000000013140000-0x000000001320F000-memory.dmp

Filesize
828KB

Download
memory/2680-40-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2680-48-0x0000000013140000-0x000000001320F000-memory.dmp

Filesize
828KB

Download
memory/2680-50-0x0000000013140000-0x000000001320F000-memory.dmp

Filesize
828KB

Download
memory/2680-49-0x0000000013140000-0x000000001320F000-memory.dmp

Filesize
828KB

Download
memory/2680-47-0x00000000004F0000-0x00000000004F1000-memory.dmp

Filesize
4KB

Download
memory/2680-46-0x0000000013140000-0x000000001320F000-memory.dmp

Filesize
828KB

Download
memory/2680-35-0x0000000013140000-0x000000001320F000-memory.dmp

Filesize
828KB

Download
memory/2680-51-0x0000000013140000-0x000000001320F000-memory.dmp

Filesize
828KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads