darkcomet | 136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b

General

Target

136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Size

252KB
MD5

8ac0a60849f224af190f126a5222788f
SHA1

afd425ae211d493f85227cb05929d2784345f4b3
SHA256

136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b
SHA512

928932ee4910fecbeee60052f81235c5a8fb6e0a8f20873f4db98e22559b9134d4d33b27f654a613880eb4df5bbe3d10930e0e6f57ebc60cb78494a8b5214d02

Score

10^/10

darkcomet guest16 persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

ximer2020.ddns.net:1604

Mutex

DC_MUTEX-4U0HFC0

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
aDFqoxfKfrcR
install
true
offline_keylogger
true
password
82121020202222
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:

136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.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"	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1940 msdcsc.exe

pid	process
1940	msdcsc.exe

UPX packed file 7 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
behavioral1/memory/1700-8-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1700-10-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1700-11-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

Deletes itself 1 IoCs

Processes:

notepad.exe

pid process

1900 notepad.exe

pid	process
1900	notepad.exe

Loads dropped DLL 2 IoCs

Processes:

136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe

pid	process
536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exemsdcsc.exeiexplore.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	iexplore.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

msdcsc.exe

description pid process target process

PID 1940 set thread context of 1700 1940 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
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

iexplore.exe

pid process

1700 iexplore.exe

description	pid	process	target process
PID 1940 set thread context of 1700	1940	msdcsc.exe	iexplore.exe

pid	process
1700	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exemsdcsc.exeiexplore.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: SeSecurityPrivilege	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: SeTakeOwnershipPrivilege	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: SeLoadDriverPrivilege	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: SeSystemProfilePrivilege	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: SeSystemtimePrivilege	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: SeProfSingleProcessPrivilege	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: SeIncBasePriorityPrivilege	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: SeCreatePagefilePrivilege	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: SeBackupPrivilege	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: SeRestorePrivilege	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: SeShutdownPrivilege	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: SeDebugPrivilege	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: SeSystemEnvironmentPrivilege	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: SeChangeNotifyPrivilege	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: SeRemoteShutdownPrivilege	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: SeUndockPrivilege	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: SeManageVolumePrivilege	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: SeImpersonatePrivilege	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: SeCreateGlobalPrivilege	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: 33	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: 34	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: 35	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
Token: SeIncreaseQuotaPrivilege	1940	msdcsc.exe
Token: SeSecurityPrivilege	1940	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1940	msdcsc.exe
Token: SeLoadDriverPrivilege	1940	msdcsc.exe
Token: SeSystemProfilePrivilege	1940	msdcsc.exe
Token: SeSystemtimePrivilege	1940	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1940	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1940	msdcsc.exe
Token: SeCreatePagefilePrivilege	1940	msdcsc.exe
Token: SeBackupPrivilege	1940	msdcsc.exe
Token: SeRestorePrivilege	1940	msdcsc.exe
Token: SeShutdownPrivilege	1940	msdcsc.exe
Token: SeDebugPrivilege	1940	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1940	msdcsc.exe
Token: SeChangeNotifyPrivilege	1940	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1940	msdcsc.exe
Token: SeUndockPrivilege	1940	msdcsc.exe
Token: SeManageVolumePrivilege	1940	msdcsc.exe
Token: SeImpersonatePrivilege	1940	msdcsc.exe
Token: SeCreateGlobalPrivilege	1940	msdcsc.exe
Token: 33	1940	msdcsc.exe
Token: 34	1940	msdcsc.exe
Token: 35	1940	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	1700	iexplore.exe
Token: SeSecurityPrivilege	1700	iexplore.exe
Token: SeTakeOwnershipPrivilege	1700	iexplore.exe
Token: SeLoadDriverPrivilege	1700	iexplore.exe
Token: SeSystemProfilePrivilege	1700	iexplore.exe
Token: SeSystemtimePrivilege	1700	iexplore.exe
Token: SeProfSingleProcessPrivilege	1700	iexplore.exe
Token: SeIncBasePriorityPrivilege	1700	iexplore.exe
Token: SeCreatePagefilePrivilege	1700	iexplore.exe
Token: SeBackupPrivilege	1700	iexplore.exe
Token: SeRestorePrivilege	1700	iexplore.exe
Token: SeShutdownPrivilege	1700	iexplore.exe
Token: SeDebugPrivilege	1700	iexplore.exe
Token: SeSystemEnvironmentPrivilege	1700	iexplore.exe
Token: SeChangeNotifyPrivilege	1700	iexplore.exe
Token: SeRemoteShutdownPrivilege	1700	iexplore.exe
Token: SeUndockPrivilege	1700	iexplore.exe
Token: SeManageVolumePrivilege	1700	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

iexplore.exe

pid process

1700 iexplore.exe

pid	process
1700	iexplore.exe

Suspicious use of WriteProcessMemory 51 IoCs

Processes:

136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exemsdcsc.exeiexplore.exe

description	pid	process	target process
PID 536 wrote to memory of 1900	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	notepad.exe
PID 536 wrote to memory of 1900	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	notepad.exe
PID 536 wrote to memory of 1900	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	notepad.exe
PID 536 wrote to memory of 1900	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	notepad.exe
PID 536 wrote to memory of 1900	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	notepad.exe
PID 536 wrote to memory of 1900	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	notepad.exe
PID 536 wrote to memory of 1900	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	notepad.exe
PID 536 wrote to memory of 1900	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	notepad.exe
PID 536 wrote to memory of 1900	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	notepad.exe
PID 536 wrote to memory of 1900	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	notepad.exe
PID 536 wrote to memory of 1900	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	notepad.exe
PID 536 wrote to memory of 1900	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	notepad.exe
PID 536 wrote to memory of 1900	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	notepad.exe
PID 536 wrote to memory of 1900	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	notepad.exe
PID 536 wrote to memory of 1900	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	notepad.exe
PID 536 wrote to memory of 1900	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	notepad.exe
PID 536 wrote to memory of 1900	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	notepad.exe
PID 536 wrote to memory of 1900	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	notepad.exe
PID 536 wrote to memory of 1940	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	msdcsc.exe
PID 536 wrote to memory of 1940	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	msdcsc.exe
PID 536 wrote to memory of 1940	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	msdcsc.exe
PID 536 wrote to memory of 1940	536	136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe	msdcsc.exe
PID 1940 wrote to memory of 1700	1940	msdcsc.exe	iexplore.exe
PID 1940 wrote to memory of 1700	1940	msdcsc.exe	iexplore.exe
PID 1940 wrote to memory of 1700	1940	msdcsc.exe	iexplore.exe
PID 1940 wrote to memory of 1700	1940	msdcsc.exe	iexplore.exe
PID 1940 wrote to memory of 1700	1940	msdcsc.exe	iexplore.exe
PID 1940 wrote to memory of 1700	1940	msdcsc.exe	iexplore.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe
PID 1700 wrote to memory of 2016	1700	iexplore.exe	notepad.exe

C:\Users\Admin\AppData\Local\Temp\136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe
"C:\Users\Admin\AppData\Local\Temp\136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:536

C:\Windows\SysWOW64\notepad.exe
notepad
2⤵
- Deletes itself
PID:1900

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:1940

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1700

C:\Windows\SysWOW64\notepad.exe
notepad
4⤵
PID:2016

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
8ac0a60849f224af190f126a5222788f

SHA1
afd425ae211d493f85227cb05929d2784345f4b3

SHA256
136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b

SHA512
928932ee4910fecbeee60052f81235c5a8fb6e0a8f20873f4db98e22559b9134d4d33b27f654a613880eb4df5bbe3d10930e0e6f57ebc60cb78494a8b5214d02

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
8ac0a60849f224af190f126a5222788f

SHA1
afd425ae211d493f85227cb05929d2784345f4b3

SHA256
136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b

SHA512
928932ee4910fecbeee60052f81235c5a8fb6e0a8f20873f4db98e22559b9134d4d33b27f654a613880eb4df5bbe3d10930e0e6f57ebc60cb78494a8b5214d02

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
8ac0a60849f224af190f126a5222788f

SHA1
afd425ae211d493f85227cb05929d2784345f4b3

SHA256
136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b

SHA512
928932ee4910fecbeee60052f81235c5a8fb6e0a8f20873f4db98e22559b9134d4d33b27f654a613880eb4df5bbe3d10930e0e6f57ebc60cb78494a8b5214d02

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
8ac0a60849f224af190f126a5222788f

SHA1
afd425ae211d493f85227cb05929d2784345f4b3

SHA256
136a7ffea17fe69ac90d7af6ec1f17ff41bb8ce09bc8c28bd4d331861285ff5b

SHA512
928932ee4910fecbeee60052f81235c5a8fb6e0a8f20873f4db98e22559b9134d4d33b27f654a613880eb4df5bbe3d10930e0e6f57ebc60cb78494a8b5214d02

Download Submit
memory/1700-9-0x00000000004B5820-mapping.dmp

Download
memory/1700-8-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1700-10-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1700-11-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1900-2-0x0000000000000000-mapping.dmp

Download
memory/1900-1-0x0000000000190000-0x0000000000191000-memory.dmp

Filesize
4KB

Download
memory/1900-0-0x0000000000000000-mapping.dmp

Download
memory/1940-5-0x0000000000000000-mapping.dmp

Download
memory/2016-12-0x0000000000000000-mapping.dmp

Download
memory/2016-14-0x0000000000000000-mapping.dmp

Download
memory/2016-13-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads