darkcomet | 2a17e3086c909b6f21fc681ded7cad0f85c308118691899b181948cb4a11d81c

Analysis

max time kernel
147s
max time network
136s
platform
windows7_x64
resource
win7v20201028
submitted
25-03-2021 22:00

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General

Target

Wolfteam/Hack.exe

Score

10^/10

darkcomet guest16 persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

olmayanoc.duckdns.org:1604

Mutex

DC_MUTEX-CWXJ2HG

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
uEE4dQifbptz
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

Processes:

Hack.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"	Hack.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1340 msdcsc.exe
Loads dropped DLL 2 IoCs

Processes:

Hack.exe

pid process

1676 Hack.exe
1676 Hack.exe

pid	process
1340	msdcsc.exe

pid	process
1676	Hack.exe
1676	Hack.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

iexplore.exeHack.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	Hack.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

msdcsc.exe

description pid process target process

PID 1340 set thread context of 1416 1340 msdcsc.exe iexplore.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 1340 set thread context of 1416	1340	msdcsc.exe	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

Hack.exemsdcsc.exeiexplore.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1676	Hack.exe
Token: SeSecurityPrivilege	1676	Hack.exe
Token: SeTakeOwnershipPrivilege	1676	Hack.exe
Token: SeLoadDriverPrivilege	1676	Hack.exe
Token: SeSystemProfilePrivilege	1676	Hack.exe
Token: SeSystemtimePrivilege	1676	Hack.exe
Token: SeProfSingleProcessPrivilege	1676	Hack.exe
Token: SeIncBasePriorityPrivilege	1676	Hack.exe
Token: SeCreatePagefilePrivilege	1676	Hack.exe
Token: SeBackupPrivilege	1676	Hack.exe
Token: SeRestorePrivilege	1676	Hack.exe
Token: SeShutdownPrivilege	1676	Hack.exe
Token: SeDebugPrivilege	1676	Hack.exe
Token: SeSystemEnvironmentPrivilege	1676	Hack.exe
Token: SeChangeNotifyPrivilege	1676	Hack.exe
Token: SeRemoteShutdownPrivilege	1676	Hack.exe
Token: SeUndockPrivilege	1676	Hack.exe
Token: SeManageVolumePrivilege	1676	Hack.exe
Token: SeImpersonatePrivilege	1676	Hack.exe
Token: SeCreateGlobalPrivilege	1676	Hack.exe
Token: 33	1676	Hack.exe
Token: 34	1676	Hack.exe
Token: 35	1676	Hack.exe
Token: SeIncreaseQuotaPrivilege	1340	msdcsc.exe
Token: SeSecurityPrivilege	1340	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1340	msdcsc.exe
Token: SeLoadDriverPrivilege	1340	msdcsc.exe
Token: SeSystemProfilePrivilege	1340	msdcsc.exe
Token: SeSystemtimePrivilege	1340	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1340	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1340	msdcsc.exe
Token: SeCreatePagefilePrivilege	1340	msdcsc.exe
Token: SeBackupPrivilege	1340	msdcsc.exe
Token: SeRestorePrivilege	1340	msdcsc.exe
Token: SeShutdownPrivilege	1340	msdcsc.exe
Token: SeDebugPrivilege	1340	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1340	msdcsc.exe
Token: SeChangeNotifyPrivilege	1340	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1340	msdcsc.exe
Token: SeUndockPrivilege	1340	msdcsc.exe
Token: SeManageVolumePrivilege	1340	msdcsc.exe
Token: SeImpersonatePrivilege	1340	msdcsc.exe
Token: SeCreateGlobalPrivilege	1340	msdcsc.exe
Token: 33	1340	msdcsc.exe
Token: 34	1340	msdcsc.exe
Token: 35	1340	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	1416	iexplore.exe
Token: SeSecurityPrivilege	1416	iexplore.exe
Token: SeTakeOwnershipPrivilege	1416	iexplore.exe
Token: SeLoadDriverPrivilege	1416	iexplore.exe
Token: SeSystemProfilePrivilege	1416	iexplore.exe
Token: SeSystemtimePrivilege	1416	iexplore.exe
Token: SeProfSingleProcessPrivilege	1416	iexplore.exe
Token: SeIncBasePriorityPrivilege	1416	iexplore.exe
Token: SeCreatePagefilePrivilege	1416	iexplore.exe
Token: SeBackupPrivilege	1416	iexplore.exe
Token: SeRestorePrivilege	1416	iexplore.exe
Token: SeShutdownPrivilege	1416	iexplore.exe
Token: SeDebugPrivilege	1416	iexplore.exe
Token: SeSystemEnvironmentPrivilege	1416	iexplore.exe
Token: SeChangeNotifyPrivilege	1416	iexplore.exe
Token: SeRemoteShutdownPrivilege	1416	iexplore.exe
Token: SeUndockPrivilege	1416	iexplore.exe
Token: SeManageVolumePrivilege	1416	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

iexplore.exe

pid process

1416 iexplore.exe

pid	process
1416	iexplore.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

Hack.exemsdcsc.exe

description	pid	process	target process
PID 1676 wrote to memory of 1340	1676	Hack.exe	msdcsc.exe
PID 1676 wrote to memory of 1340	1676	Hack.exe	msdcsc.exe
PID 1676 wrote to memory of 1340	1676	Hack.exe	msdcsc.exe
PID 1676 wrote to memory of 1340	1676	Hack.exe	msdcsc.exe
PID 1340 wrote to memory of 1416	1340	msdcsc.exe	iexplore.exe
PID 1340 wrote to memory of 1416	1340	msdcsc.exe	iexplore.exe
PID 1340 wrote to memory of 1416	1340	msdcsc.exe	iexplore.exe
PID 1340 wrote to memory of 1416	1340	msdcsc.exe	iexplore.exe
PID 1340 wrote to memory of 1416	1340	msdcsc.exe	iexplore.exe
PID 1340 wrote to memory of 1416	1340	msdcsc.exe	iexplore.exe

C:\Users\Admin\AppData\Local\Temp\Wolfteam\Hack.exe
"C:\Users\Admin\AppData\Local\Temp\Wolfteam\Hack.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1676

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1340

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1416

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
1d5349887bf319b3883a8e84797f2f0f

SHA1
3dd4311bdaee5164f1d4e4b3183fea9262a0a721

SHA256
a2aacc0b545223c09ebf8540450cd436d1fe4274b10660c4cb90b2dd35727a39

SHA512
e9faf7ad9998c6d0c9831eca28ad4822140d0b55dcb28974101a2b8e8a1fb0ef3a9f9aacc1f797440316a10dd3b03c6a13b4276b113d55689ce66825bc470680

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
1d5349887bf319b3883a8e84797f2f0f

SHA1
3dd4311bdaee5164f1d4e4b3183fea9262a0a721

SHA256
a2aacc0b545223c09ebf8540450cd436d1fe4274b10660c4cb90b2dd35727a39

SHA512
e9faf7ad9998c6d0c9831eca28ad4822140d0b55dcb28974101a2b8e8a1fb0ef3a9f9aacc1f797440316a10dd3b03c6a13b4276b113d55689ce66825bc470680

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
1d5349887bf319b3883a8e84797f2f0f

SHA1
3dd4311bdaee5164f1d4e4b3183fea9262a0a721

SHA256
a2aacc0b545223c09ebf8540450cd436d1fe4274b10660c4cb90b2dd35727a39

SHA512
e9faf7ad9998c6d0c9831eca28ad4822140d0b55dcb28974101a2b8e8a1fb0ef3a9f9aacc1f797440316a10dd3b03c6a13b4276b113d55689ce66825bc470680

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
1d5349887bf319b3883a8e84797f2f0f

SHA1
3dd4311bdaee5164f1d4e4b3183fea9262a0a721

SHA256
a2aacc0b545223c09ebf8540450cd436d1fe4274b10660c4cb90b2dd35727a39

SHA512
e9faf7ad9998c6d0c9831eca28ad4822140d0b55dcb28974101a2b8e8a1fb0ef3a9f9aacc1f797440316a10dd3b03c6a13b4276b113d55689ce66825bc470680

Download Submit
memory/1340-6-0x0000000000000000-mapping.dmp

Download
memory/1340-10-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download
memory/1416-11-0x0000000000400000-0x00000000004E1000-memory.dmp

Filesize
900KB

Download
memory/1416-12-0x000000000048F888-mapping.dmp

Download
memory/1676-2-0x0000000075A41000-0x0000000075A43000-memory.dmp

Filesize
8KB

Download
memory/1676-3-0x00000000001D0000-0x00000000001D1000-memory.dmp

Filesize
4KB

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