darkcomet | 6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8

Analysis

max time kernel
167s
max time network
180s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
19/10/2022, 22:37

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General

Target
6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Size 907KB
Sample221019-2j9v2sbedn
SHA256 6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8
MD5 913b54db947f67d94d58823418f74aa0
SHA1 066eceedbc3174bcc93fdab828de31969744c4d4
SHA512 501145d4af6678c12143dc8a00f2a705a1393c52f792fb815da194558cdc301f8fefeab70236410851e29f9156d690a5218d2865295d2a18b4a4ebcafe7a6b57
SSDEEP 24576:VtxKCO6Bwy1yO9QTyFjqAaP+vg0iSx3J1z:Vtxr6O8yjQP+PHrz
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet guest16 persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

hellohamid.no-ip.org:1604

Mutex

DC_MUTEX-JAYYFG0

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
qfXdGq48XLNR
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

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

T1004

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\\Documents\\MSDCSC\\msdcsc.exe"	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe

Executes dropped EXE 1 IoCs

pid	Process
4956	msdcsc.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe

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

System Information Discovery
T1082

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\pi1303744493o.txn	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\pi1303744493o.txn\ = 0333b6a5204288917fb854ef219fbc00170b109948508a5b	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\pi1303744493o.txn	msdcsc.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\pi1303744493o.txn\ = 0737b2a124468c957bbc50eb259bb804130f149d4c548e5f	msdcsc.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4956	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: SeSecurityPrivilege	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: SeTakeOwnershipPrivilege	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: SeLoadDriverPrivilege	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: SeSystemProfilePrivilege	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: SeSystemtimePrivilege	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: SeProfSingleProcessPrivilege	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: SeIncBasePriorityPrivilege	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: SeCreatePagefilePrivilege	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: SeBackupPrivilege	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: SeRestorePrivilege	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: SeShutdownPrivilege	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: SeDebugPrivilege	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: SeSystemEnvironmentPrivilege	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: SeChangeNotifyPrivilege	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: SeRemoteShutdownPrivilege	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: SeUndockPrivilege	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: SeManageVolumePrivilege	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: SeImpersonatePrivilege	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: SeCreateGlobalPrivilege	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: 33	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: 34	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: 35	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: 36	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
Token: SeIncreaseQuotaPrivilege	4956	msdcsc.exe
Token: SeSecurityPrivilege	4956	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4956	msdcsc.exe
Token: SeLoadDriverPrivilege	4956	msdcsc.exe
Token: SeSystemProfilePrivilege	4956	msdcsc.exe
Token: SeSystemtimePrivilege	4956	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4956	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4956	msdcsc.exe
Token: SeCreatePagefilePrivilege	4956	msdcsc.exe
Token: SeBackupPrivilege	4956	msdcsc.exe
Token: SeRestorePrivilege	4956	msdcsc.exe
Token: SeShutdownPrivilege	4956	msdcsc.exe
Token: SeDebugPrivilege	4956	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4956	msdcsc.exe
Token: SeChangeNotifyPrivilege	4956	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4956	msdcsc.exe
Token: SeUndockPrivilege	4956	msdcsc.exe
Token: SeManageVolumePrivilege	4956	msdcsc.exe
Token: SeImpersonatePrivilege	4956	msdcsc.exe
Token: SeCreateGlobalPrivilege	4956	msdcsc.exe
Token: 33	4956	msdcsc.exe
Token: 34	4956	msdcsc.exe
Token: 35	4956	msdcsc.exe
Token: 36	4956	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4956	msdcsc.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 4568 wrote to memory of 4956	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe	81
PID 4568 wrote to memory of 4956	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe	81
PID 4568 wrote to memory of 4956	4568	6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe	81
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82
PID 4956 wrote to memory of 4744	4956	msdcsc.exe	82

C:\Users\Admin\AppData\Local\Temp\6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe
"C:\Users\Admin\AppData\Local\Temp\6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4568
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4956
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    PID:4744

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

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

msdcsc.exe

Path C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Size 907KB
SHA256 6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8
MD5 913b54db947f67d94d58823418f74aa0
SHA1 066eceedbc3174bcc93fdab828de31969744c4d4
SHA512 501145d4af6678c12143dc8a00f2a705a1393c52f792fb815da194558cdc301f8fefeab70236410851e29f9156d690a5218d2865295d2a18b4a4ebcafe7a6b57
SSDEEP 24576:VtxKCO6Bwy1yO9QTyFjqAaP+vg0iSx3J1z:Vtxr6O8yjQP+PHrz
MD5 SHA1 SHA512 SSDEEP

Submit Download

msdcsc.exe

Path C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Size 907KB
SHA256 6d9bc21f8ee1effb69aafc1fa4ee2153c54572f12eb1b2022951694b1af109b8
MD5 913b54db947f67d94d58823418f74aa0
SHA1 066eceedbc3174bcc93fdab828de31969744c4d4
SHA512 501145d4af6678c12143dc8a00f2a705a1393c52f792fb815da194558cdc301f8fefeab70236410851e29f9156d690a5218d2865295d2a18b4a4ebcafe7a6b57
SSDEEP 24576:VtxKCO6Bwy1yO9QTyFjqAaP+vg0iSx3J1z:Vtxr6O8yjQP+PHrz
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/4568-132-0x0000000000400000-0x00000000005A3000-memory.dmp

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memory/4568-133-0x0000000000400000-0x00000000005A3000-memory.dmp

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memory/4956-137-0x0000000000400000-0x00000000005A3000-memory.dmp

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memory/4956-139-0x0000000000400000-0x00000000005A3000-memory.dmp

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memory/4956-140-0x0000000000400000-0x00000000005A3000-memory.dmp

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memory/4956-141-0x0000000000400000-0x00000000005A3000-memory.dmp

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memory/4956-142-0x0000000000400000-0x00000000005A3000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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