darkcomet | 3249eefcf27f03ae89ef3c85074bf00be3e5dd251ec8d52200a731912487bbe3

General

Target

AntiVM.exe
Size

837KB
MD5

003b08b0ce8bb863e5a9bcfa7a20a2a3
SHA1

df93956e25c6f799f5976d9e633c5646a2a20638
SHA256

3249eefcf27f03ae89ef3c85074bf00be3e5dd251ec8d52200a731912487bbe3
SHA512

1859bebcbc7f0fa212e36acc7326c5a24d8d2c625a35a9b9c3e6b6f72a2132fc62d7403fa90e8f4e48baf8fc96e32697f37c83fd6fb3fd90dc60541e5bb4fc5f

Score

10^/10

darkcomet evasion 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 2 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

AntiVM.exeANTIVM.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"	AntiVM.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	ANTIVM.EXE

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

ANTIVM.EXE

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	ANTIVM.EXE
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "1"	ANTIVM.EXE
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	ANTIVM.EXE

Modifies security service 2 TTPs 1 IoCs
evasion

Modify Registry
T1112

Modify Existing Service
T1031

Processes:

ANTIVM.EXE

description ioc process

Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "1" ANTIVM.EXE
Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
Disables RegEdit via registry modification
evasion
Disables Task Manager via registry modification
evasion
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1072 msdcsc.exe
Deletes itself 1 IoCs

Processes:

notepad.exe

pid process

1868 notepad.exe
Loads dropped DLL 2 IoCs

Processes:

AntiVM.exe

pid process

1748 AntiVM.exe
1748 AntiVM.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "1"	ANTIVM.EXE

pid	process
1072	msdcsc.exe

pid	process
1868	notepad.exe

pid	process
1748	AntiVM.exe
1748	AntiVM.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

ANTIVM.EXE

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "0"	ANTIVM.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "0"	ANTIVM.EXE

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

AntiVM.exeANTIVM.EXE

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	AntiVM.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	ANTIVM.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	ANTIVM.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: EnumeratesProcesses 2 IoCs

Processes:

ANTIVM.EXE

pid process

2012 ANTIVM.EXE
2012 ANTIVM.EXE

pid	process
2012	ANTIVM.EXE
2012	ANTIVM.EXE

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

AntiVM.exeANTIVM.EXEmsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1748	AntiVM.exe
Token: SeSecurityPrivilege	1748	AntiVM.exe
Token: SeTakeOwnershipPrivilege	1748	AntiVM.exe
Token: SeLoadDriverPrivilege	1748	AntiVM.exe
Token: SeSystemProfilePrivilege	1748	AntiVM.exe
Token: SeSystemtimePrivilege	1748	AntiVM.exe
Token: SeProfSingleProcessPrivilege	1748	AntiVM.exe
Token: SeIncBasePriorityPrivilege	1748	AntiVM.exe
Token: SeCreatePagefilePrivilege	1748	AntiVM.exe
Token: SeBackupPrivilege	1748	AntiVM.exe
Token: SeRestorePrivilege	1748	AntiVM.exe
Token: SeShutdownPrivilege	1748	AntiVM.exe
Token: SeDebugPrivilege	1748	AntiVM.exe
Token: SeSystemEnvironmentPrivilege	1748	AntiVM.exe
Token: SeChangeNotifyPrivilege	1748	AntiVM.exe
Token: SeRemoteShutdownPrivilege	1748	AntiVM.exe
Token: SeUndockPrivilege	1748	AntiVM.exe
Token: SeManageVolumePrivilege	1748	AntiVM.exe
Token: SeImpersonatePrivilege	1748	AntiVM.exe
Token: SeCreateGlobalPrivilege	1748	AntiVM.exe
Token: 33	1748	AntiVM.exe
Token: 34	1748	AntiVM.exe
Token: 35	1748	AntiVM.exe
Token: SeIncreaseQuotaPrivilege	2012	ANTIVM.EXE
Token: SeSecurityPrivilege	2012	ANTIVM.EXE
Token: SeTakeOwnershipPrivilege	2012	ANTIVM.EXE
Token: SeLoadDriverPrivilege	2012	ANTIVM.EXE
Token: SeSystemProfilePrivilege	2012	ANTIVM.EXE
Token: SeSystemtimePrivilege	2012	ANTIVM.EXE
Token: SeProfSingleProcessPrivilege	2012	ANTIVM.EXE
Token: SeIncBasePriorityPrivilege	2012	ANTIVM.EXE
Token: SeCreatePagefilePrivilege	2012	ANTIVM.EXE
Token: SeBackupPrivilege	2012	ANTIVM.EXE
Token: SeRestorePrivilege	2012	ANTIVM.EXE
Token: SeShutdownPrivilege	2012	ANTIVM.EXE
Token: SeDebugPrivilege	2012	ANTIVM.EXE
Token: SeSystemEnvironmentPrivilege	2012	ANTIVM.EXE
Token: SeChangeNotifyPrivilege	2012	ANTIVM.EXE
Token: SeRemoteShutdownPrivilege	2012	ANTIVM.EXE
Token: SeUndockPrivilege	2012	ANTIVM.EXE
Token: SeManageVolumePrivilege	2012	ANTIVM.EXE
Token: SeImpersonatePrivilege	2012	ANTIVM.EXE
Token: SeCreateGlobalPrivilege	2012	ANTIVM.EXE
Token: 33	2012	ANTIVM.EXE
Token: 34	2012	ANTIVM.EXE
Token: 35	2012	ANTIVM.EXE
Token: SeIncreaseQuotaPrivilege	1072	msdcsc.exe
Token: SeSecurityPrivilege	1072	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1072	msdcsc.exe
Token: SeLoadDriverPrivilege	1072	msdcsc.exe
Token: SeSystemProfilePrivilege	1072	msdcsc.exe
Token: SeSystemtimePrivilege	1072	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1072	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1072	msdcsc.exe
Token: SeCreatePagefilePrivilege	1072	msdcsc.exe
Token: SeBackupPrivilege	1072	msdcsc.exe
Token: SeRestorePrivilege	1072	msdcsc.exe
Token: SeShutdownPrivilege	1072	msdcsc.exe
Token: SeDebugPrivilege	1072	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1072	msdcsc.exe
Token: SeChangeNotifyPrivilege	1072	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1072	msdcsc.exe
Token: SeUndockPrivilege	1072	msdcsc.exe
Token: SeManageVolumePrivilege	1072	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

ANTIVM.EXE

pid process

2012 ANTIVM.EXE

pid	process
2012	ANTIVM.EXE

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

AntiVM.exeANTIVM.EXE

description	pid	process	target process
PID 1748 wrote to memory of 2012	1748	AntiVM.exe	ANTIVM.EXE
PID 1748 wrote to memory of 2012	1748	AntiVM.exe	ANTIVM.EXE
PID 1748 wrote to memory of 2012	1748	AntiVM.exe	ANTIVM.EXE
PID 1748 wrote to memory of 2012	1748	AntiVM.exe	ANTIVM.EXE
PID 1748 wrote to memory of 1072	1748	AntiVM.exe	msdcsc.exe
PID 1748 wrote to memory of 1072	1748	AntiVM.exe	msdcsc.exe
PID 1748 wrote to memory of 1072	1748	AntiVM.exe	msdcsc.exe
PID 1748 wrote to memory of 1072	1748	AntiVM.exe	msdcsc.exe
PID 2012 wrote to memory of 1868	2012	ANTIVM.EXE	notepad.exe
PID 2012 wrote to memory of 1868	2012	ANTIVM.EXE	notepad.exe
PID 2012 wrote to memory of 1868	2012	ANTIVM.EXE	notepad.exe
PID 2012 wrote to memory of 1868	2012	ANTIVM.EXE	notepad.exe
PID 2012 wrote to memory of 1868	2012	ANTIVM.EXE	notepad.exe
PID 2012 wrote to memory of 1868	2012	ANTIVM.EXE	notepad.exe
PID 2012 wrote to memory of 1868	2012	ANTIVM.EXE	notepad.exe
PID 2012 wrote to memory of 1868	2012	ANTIVM.EXE	notepad.exe
PID 2012 wrote to memory of 1868	2012	ANTIVM.EXE	notepad.exe
PID 2012 wrote to memory of 1868	2012	ANTIVM.EXE	notepad.exe
PID 2012 wrote to memory of 1868	2012	ANTIVM.EXE	notepad.exe
PID 2012 wrote to memory of 1868	2012	ANTIVM.EXE	notepad.exe
PID 2012 wrote to memory of 1868	2012	ANTIVM.EXE	notepad.exe
PID 2012 wrote to memory of 1868	2012	ANTIVM.EXE	notepad.exe
PID 2012 wrote to memory of 1868	2012	ANTIVM.EXE	notepad.exe
PID 2012 wrote to memory of 1868	2012	ANTIVM.EXE	notepad.exe
PID 2012 wrote to memory of 1868	2012	ANTIVM.EXE	notepad.exe
PID 2012 wrote to memory of 1868	2012	ANTIVM.EXE	notepad.exe

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

Processes:

ANTIVM.EXE

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "0"	ANTIVM.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	ANTIVM.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	ANTIVM.EXE

C:\Users\Admin\AppData\Local\Temp\AntiVM.exe
"C:\Users\Admin\AppData\Local\Temp\AntiVM.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1748

C:\Users\Admin\AppData\Local\Temp\ANTIVM.EXE
"C:\Users\Admin\AppData\Local\Temp\ANTIVM.EXE"
2⤵
- Modifies WinLogon for persistence
- Modifies firewall policy service
- Modifies security service
- Windows security modification
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2012

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
- Deletes itself
PID:1868

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1072

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

2

T1031

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Disabling Security Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

MD5
003b08b0ce8bb863e5a9bcfa7a20a2a3

SHA1
df93956e25c6f799f5976d9e633c5646a2a20638

SHA256
3249eefcf27f03ae89ef3c85074bf00be3e5dd251ec8d52200a731912487bbe3

SHA512
1859bebcbc7f0fa212e36acc7326c5a24d8d2c625a35a9b9c3e6b6f72a2132fc62d7403fa90e8f4e48baf8fc96e32697f37c83fd6fb3fd90dc60541e5bb4fc5f

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

MD5
003b08b0ce8bb863e5a9bcfa7a20a2a3

SHA1
df93956e25c6f799f5976d9e633c5646a2a20638

SHA256
3249eefcf27f03ae89ef3c85074bf00be3e5dd251ec8d52200a731912487bbe3

SHA512
1859bebcbc7f0fa212e36acc7326c5a24d8d2c625a35a9b9c3e6b6f72a2132fc62d7403fa90e8f4e48baf8fc96e32697f37c83fd6fb3fd90dc60541e5bb4fc5f

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

MD5
003b08b0ce8bb863e5a9bcfa7a20a2a3

SHA1
df93956e25c6f799f5976d9e633c5646a2a20638

SHA256
3249eefcf27f03ae89ef3c85074bf00be3e5dd251ec8d52200a731912487bbe3

SHA512
1859bebcbc7f0fa212e36acc7326c5a24d8d2c625a35a9b9c3e6b6f72a2132fc62d7403fa90e8f4e48baf8fc96e32697f37c83fd6fb3fd90dc60541e5bb4fc5f

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

MD5
003b08b0ce8bb863e5a9bcfa7a20a2a3

SHA1
df93956e25c6f799f5976d9e633c5646a2a20638

SHA256
3249eefcf27f03ae89ef3c85074bf00be3e5dd251ec8d52200a731912487bbe3

SHA512
1859bebcbc7f0fa212e36acc7326c5a24d8d2c625a35a9b9c3e6b6f72a2132fc62d7403fa90e8f4e48baf8fc96e32697f37c83fd6fb3fd90dc60541e5bb4fc5f

Download Submit
memory/1072-67-0x0000000000000000-mapping.dmp

Download
memory/1072-70-0x00000000001D0000-0x00000000001D1000-memory.dmp

Filesize
4KB

Download
memory/1748-59-0x00000000757E1000-0x00000000757E3000-memory.dmp

Filesize
8KB

Download
memory/1748-63-0x00000000002C0000-0x00000000002C1000-memory.dmp

Filesize
4KB

Download
memory/1868-71-0x0000000000000000-mapping.dmp

Download
memory/1868-73-0x0000000000190000-0x0000000000191000-memory.dmp

Filesize
4KB

Download
memory/2012-60-0x0000000000000000-mapping.dmp

Download
memory/2012-64-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads