darkcomet | bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685

General

Target

bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Size

756KB
MD5

033bd2f76c9cbe25dcc5fee659c8b785
SHA1

8bc5570a484f17f304ff12bf615abaa7f2622f30
SHA256

bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685
SHA512

25039666eb1cdf881048108bae0e945a84e79fe68dd2f9c354df4deef2cf099cc0cfba6c48cff9f0a7c459f794ec5cd6575e7607f2ce975688deea18dc06906b
SSDEEP

12288:t9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hu:HZ1xuVVjfFoynPaVBUR8f+kN10EBw

Score

10^/10

darkcomet yený casut persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

YENÝ CASUT

C2

thteflaki.ddns.net:1604

Mutex

DC_MUTEX-YW5T4XG

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
KxHV27JBfqf4
install
true
offline_keylogger
true
persistence
false
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

Processes:

bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe

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"	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1656 msdcsc.exe

pid	process
1656	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

Processes:

bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Control Panel\International\Geo\Nation	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.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 1 IoCs

Processes:

bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

1656 msdcsc.exe

pid	process
1656	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: SeSecurityPrivilege	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: SeTakeOwnershipPrivilege	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: SeLoadDriverPrivilege	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: SeSystemProfilePrivilege	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: SeSystemtimePrivilege	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: SeProfSingleProcessPrivilege	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: SeIncBasePriorityPrivilege	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: SeCreatePagefilePrivilege	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: SeBackupPrivilege	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: SeRestorePrivilege	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: SeShutdownPrivilege	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: SeDebugPrivilege	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: SeSystemEnvironmentPrivilege	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: SeChangeNotifyPrivilege	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: SeRemoteShutdownPrivilege	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: SeUndockPrivilege	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: SeManageVolumePrivilege	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: SeImpersonatePrivilege	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: SeCreateGlobalPrivilege	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: 33	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: 34	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: 35	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: 36	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
Token: SeIncreaseQuotaPrivilege	1656	msdcsc.exe
Token: SeSecurityPrivilege	1656	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1656	msdcsc.exe
Token: SeLoadDriverPrivilege	1656	msdcsc.exe
Token: SeSystemProfilePrivilege	1656	msdcsc.exe
Token: SeSystemtimePrivilege	1656	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1656	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1656	msdcsc.exe
Token: SeCreatePagefilePrivilege	1656	msdcsc.exe
Token: SeBackupPrivilege	1656	msdcsc.exe
Token: SeRestorePrivilege	1656	msdcsc.exe
Token: SeShutdownPrivilege	1656	msdcsc.exe
Token: SeDebugPrivilege	1656	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1656	msdcsc.exe
Token: SeChangeNotifyPrivilege	1656	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1656	msdcsc.exe
Token: SeUndockPrivilege	1656	msdcsc.exe
Token: SeManageVolumePrivilege	1656	msdcsc.exe
Token: SeImpersonatePrivilege	1656	msdcsc.exe
Token: SeCreateGlobalPrivilege	1656	msdcsc.exe
Token: 33	1656	msdcsc.exe
Token: 34	1656	msdcsc.exe
Token: 35	1656	msdcsc.exe
Token: 36	1656	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1656 msdcsc.exe

pid	process
1656	msdcsc.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe

description	pid	process	target process
PID 3568 wrote to memory of 3172	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe	notepad.exe
PID 3568 wrote to memory of 3172	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe	notepad.exe
PID 3568 wrote to memory of 3172	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe	notepad.exe
PID 3568 wrote to memory of 3172	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe	notepad.exe
PID 3568 wrote to memory of 3172	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe	notepad.exe
PID 3568 wrote to memory of 3172	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe	notepad.exe
PID 3568 wrote to memory of 3172	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe	notepad.exe
PID 3568 wrote to memory of 3172	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe	notepad.exe
PID 3568 wrote to memory of 3172	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe	notepad.exe
PID 3568 wrote to memory of 3172	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe	notepad.exe
PID 3568 wrote to memory of 3172	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe	notepad.exe
PID 3568 wrote to memory of 3172	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe	notepad.exe
PID 3568 wrote to memory of 3172	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe	notepad.exe
PID 3568 wrote to memory of 3172	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe	notepad.exe
PID 3568 wrote to memory of 3172	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe	notepad.exe
PID 3568 wrote to memory of 3172	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe	notepad.exe
PID 3568 wrote to memory of 3172	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe	notepad.exe
PID 3568 wrote to memory of 1656	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe	msdcsc.exe
PID 3568 wrote to memory of 1656	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe	msdcsc.exe
PID 3568 wrote to memory of 1656	3568	bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe	msdcsc.exe

C:\Users\Admin\AppData\Local\Temp\bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.exe
"C:\Users\Admin\AppData\Local\Temp\bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685.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:3568
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  PID:3172
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1656

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
756KB

MD5
033bd2f76c9cbe25dcc5fee659c8b785

SHA1
8bc5570a484f17f304ff12bf615abaa7f2622f30

SHA256
bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685

SHA512
25039666eb1cdf881048108bae0e945a84e79fe68dd2f9c354df4deef2cf099cc0cfba6c48cff9f0a7c459f794ec5cd6575e7607f2ce975688deea18dc06906b

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
756KB

MD5
033bd2f76c9cbe25dcc5fee659c8b785

SHA1
8bc5570a484f17f304ff12bf615abaa7f2622f30

SHA256
bb36ac4b8e058a79b345c6655824c1d66fc5f9ae733a33ae8876e8cc11619685

SHA512
25039666eb1cdf881048108bae0e945a84e79fe68dd2f9c354df4deef2cf099cc0cfba6c48cff9f0a7c459f794ec5cd6575e7607f2ce975688deea18dc06906b

Download Submit
memory/1656-133-0x0000000000000000-mapping.dmp

Download
memory/3172-132-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads