darkcomet | 7c2c004282ca33936f3d89c546a6cb080087e070e9a1588793007d6871261edf

Analysis

max time kernel
149s
max time network
120s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
12-03-2024 04:08

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General

Target

c26a305e01fc3731491432ef1db65b31.exe
Size

659KB
MD5

c26a305e01fc3731491432ef1db65b31
SHA1

bf63b2f52885886f07320a142dea925ddf888fd8
SHA256

7c2c004282ca33936f3d89c546a6cb080087e070e9a1588793007d6871261edf
SHA512

24ca8ede54068e370359be6e712dde5c39a6566afe2581e3e14a83ebadf04eaa0c7a850feb21a9d31a9d1c13c80ca3857ef265a07212de607e227717feb8c6e2
SSDEEP

12288:x9AFlAd0Z+89cxTGzO4AucTD8QP2lmFSrVs9LqnKr:HAQ6Zx9cxTmOrucTIEFSpOGy

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\\Windupdt\\winupdate.exe"	c26a305e01fc3731491432ef1db65b31.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	c26a305e01fc3731491432ef1db65b31.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-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe"	c26a305e01fc3731491432ef1db65b31.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe"	notepad.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1656 set thread context of 2360	1656	c26a305e01fc3731491432ef1db65b31.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	c26a305e01fc3731491432ef1db65b31.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	c26a305e01fc3731491432ef1db65b31.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	c26a305e01fc3731491432ef1db65b31.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	c26a305e01fc3731491432ef1db65b31.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	c26a305e01fc3731491432ef1db65b31.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: SeSecurityPrivilege	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: SeTakeOwnershipPrivilege	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: SeLoadDriverPrivilege	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: SeSystemProfilePrivilege	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: SeSystemtimePrivilege	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: SeProfSingleProcessPrivilege	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: SeIncBasePriorityPrivilege	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: SeCreatePagefilePrivilege	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: SeBackupPrivilege	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: SeRestorePrivilege	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: SeShutdownPrivilege	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: SeDebugPrivilege	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: SeSystemEnvironmentPrivilege	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: SeChangeNotifyPrivilege	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: SeRemoteShutdownPrivilege	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: SeUndockPrivilege	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: SeManageVolumePrivilege	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: SeImpersonatePrivilege	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: SeCreateGlobalPrivilege	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: 33	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: 34	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: 35	1656	c26a305e01fc3731491432ef1db65b31.exe
Token: SeIncreaseQuotaPrivilege	2360	explorer.exe
Token: SeSecurityPrivilege	2360	explorer.exe
Token: SeTakeOwnershipPrivilege	2360	explorer.exe
Token: SeLoadDriverPrivilege	2360	explorer.exe
Token: SeSystemProfilePrivilege	2360	explorer.exe
Token: SeSystemtimePrivilege	2360	explorer.exe
Token: SeProfSingleProcessPrivilege	2360	explorer.exe
Token: SeIncBasePriorityPrivilege	2360	explorer.exe
Token: SeCreatePagefilePrivilege	2360	explorer.exe
Token: SeBackupPrivilege	2360	explorer.exe
Token: SeRestorePrivilege	2360	explorer.exe
Token: SeShutdownPrivilege	2360	explorer.exe
Token: SeDebugPrivilege	2360	explorer.exe
Token: SeSystemEnvironmentPrivilege	2360	explorer.exe
Token: SeChangeNotifyPrivilege	2360	explorer.exe
Token: SeRemoteShutdownPrivilege	2360	explorer.exe
Token: SeUndockPrivilege	2360	explorer.exe
Token: SeManageVolumePrivilege	2360	explorer.exe
Token: SeImpersonatePrivilege	2360	explorer.exe
Token: SeCreateGlobalPrivilege	2360	explorer.exe
Token: 33	2360	explorer.exe
Token: 34	2360	explorer.exe
Token: 35	2360	explorer.exe

Suspicious use of WriteProcessMemory 53 IoCs

description	pid	Process	procid_target
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2196	1656	c26a305e01fc3731491432ef1db65b31.exe	28
PID 1656 wrote to memory of 2360	1656	c26a305e01fc3731491432ef1db65b31.exe	29
PID 1656 wrote to memory of 2360	1656	c26a305e01fc3731491432ef1db65b31.exe	29
PID 1656 wrote to memory of 2360	1656	c26a305e01fc3731491432ef1db65b31.exe	29
PID 1656 wrote to memory of 2360	1656	c26a305e01fc3731491432ef1db65b31.exe	29
PID 1656 wrote to memory of 2360	1656	c26a305e01fc3731491432ef1db65b31.exe	29
PID 1656 wrote to memory of 2360	1656	c26a305e01fc3731491432ef1db65b31.exe	29
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30
PID 2360 wrote to memory of 2672	2360	explorer.exe	30

C:\Users\Admin\AppData\Local\Temp\c26a305e01fc3731491432ef1db65b31.exe
"C:\Users\Admin\AppData\Local\Temp\c26a305e01fc3731491432ef1db65b31.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:1656
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Adds Run key to start application
  PID:2196
- 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 WriteProcessMemory
  PID:2360
- - C:\Windows\SysWOW64\notepad.exe
    C:\Windows\SysWOW64\notepad.exe
    3⤵
    PID:2672

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

Replay Monitor

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Downloads

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

Filesize
659KB

MD5
c26a305e01fc3731491432ef1db65b31

SHA1
bf63b2f52885886f07320a142dea925ddf888fd8

SHA256
7c2c004282ca33936f3d89c546a6cb080087e070e9a1588793007d6871261edf

SHA512
24ca8ede54068e370359be6e712dde5c39a6566afe2581e3e14a83ebadf04eaa0c7a850feb21a9d31a9d1c13c80ca3857ef265a07212de607e227717feb8c6e2

Download Submit
memory/1656-0-0x0000000000400000-0x0000000000401000-memory.dmp

Filesize
4KB

Download
memory/1656-46-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/2196-2-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/2196-35-0x0000000000460000-0x0000000000461000-memory.dmp

Filesize
4KB

Download
memory/2360-44-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/2360-42-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2360-40-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/2360-45-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/2360-47-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/2360-48-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/2360-80-0x0000000000210000-0x0000000000211000-memory.dmp

Filesize
4KB

Download
memory/2360-83-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/2672-82-0x0000000000310000-0x0000000000311000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads