darkcomet | d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2

General

Target

d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Size

658KB
MD5

4d693fde464e00a60c0c87d8a8c4e27c
SHA1

9efd17718385a0445d40ce1c3de86b9bd18a33a0
SHA256

d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2
SHA512

05e358afa6d9419a501125cc57fe8976cddf1b358a7a30d8158d08b439379e00d068e8c8dcde6e65de98a19bedb3ae6521ce412835c7a64348438f05042eaab4

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

sasha8787.hopto.org:1604

Mutex

DC_MUTEX-0E94YVE

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
jc8H9yZoi6Sf
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:

d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Roaming\\MSDCSC\\msdcsc.exe"	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

msdcsc.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	msdcsc.exe

Modifies security service 2 TTPs 1 IoCs
evasion

Modify Registry
T1112

Modify Existing Service
T1031

Processes:

msdcsc.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" msdcsc.exe
Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

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

Processes:

msdcsc.exe

pid process

2632 msdcsc.exe
Sets file to hidden 1 TTPs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	msdcsc.exe

pid	process
2632	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:

d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

msdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

msdcsc.exed8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\MSDCSC\\msdcsc.exe"	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.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:

msdcsc.exe

pid process

2632 msdcsc.exe

pid	process
2632	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: SeSecurityPrivilege	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: SeTakeOwnershipPrivilege	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: SeLoadDriverPrivilege	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: SeSystemProfilePrivilege	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: SeSystemtimePrivilege	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: SeProfSingleProcessPrivilege	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: SeIncBasePriorityPrivilege	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: SeCreatePagefilePrivilege	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: SeBackupPrivilege	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: SeRestorePrivilege	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: SeShutdownPrivilege	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: SeDebugPrivilege	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: SeSystemEnvironmentPrivilege	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: SeChangeNotifyPrivilege	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: SeRemoteShutdownPrivilege	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: SeUndockPrivilege	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: SeManageVolumePrivilege	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: SeImpersonatePrivilege	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: SeCreateGlobalPrivilege	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: 33	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: 34	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: 35	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: 36	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
Token: SeIncreaseQuotaPrivilege	2632	msdcsc.exe
Token: SeSecurityPrivilege	2632	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2632	msdcsc.exe
Token: SeLoadDriverPrivilege	2632	msdcsc.exe
Token: SeSystemProfilePrivilege	2632	msdcsc.exe
Token: SeSystemtimePrivilege	2632	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2632	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2632	msdcsc.exe
Token: SeCreatePagefilePrivilege	2632	msdcsc.exe
Token: SeBackupPrivilege	2632	msdcsc.exe
Token: SeRestorePrivilege	2632	msdcsc.exe
Token: SeShutdownPrivilege	2632	msdcsc.exe
Token: SeDebugPrivilege	2632	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2632	msdcsc.exe
Token: SeChangeNotifyPrivilege	2632	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2632	msdcsc.exe
Token: SeUndockPrivilege	2632	msdcsc.exe
Token: SeManageVolumePrivilege	2632	msdcsc.exe
Token: SeImpersonatePrivilege	2632	msdcsc.exe
Token: SeCreateGlobalPrivilege	2632	msdcsc.exe
Token: 33	2632	msdcsc.exe
Token: 34	2632	msdcsc.exe
Token: 35	2632	msdcsc.exe
Token: 36	2632	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

2632 msdcsc.exe

pid	process
2632	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 3508 wrote to memory of 4144	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe	cmd.exe
PID 3508 wrote to memory of 4144	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe	cmd.exe
PID 3508 wrote to memory of 4144	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe	cmd.exe
PID 3508 wrote to memory of 1424	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe	cmd.exe
PID 3508 wrote to memory of 1424	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe	cmd.exe
PID 3508 wrote to memory of 1424	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe	cmd.exe
PID 3508 wrote to memory of 2632	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe	msdcsc.exe
PID 3508 wrote to memory of 2632	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe	msdcsc.exe
PID 3508 wrote to memory of 2632	3508	d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe	msdcsc.exe
PID 1424 wrote to memory of 5024	1424	cmd.exe	attrib.exe
PID 1424 wrote to memory of 5024	1424	cmd.exe	attrib.exe
PID 1424 wrote to memory of 5024	1424	cmd.exe	attrib.exe
PID 4144 wrote to memory of 5040	4144	cmd.exe	attrib.exe
PID 4144 wrote to memory of 5040	4144	cmd.exe	attrib.exe
PID 4144 wrote to memory of 5040	4144	cmd.exe	attrib.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe
PID 2632 wrote to memory of 1052	2632	msdcsc.exe	notepad.exe

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

Processes:

msdcsc.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	msdcsc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	msdcsc.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

5040 attrib.exe
5024 attrib.exe

pid	process
5040	attrib.exe
5024	attrib.exe

C:\Users\Admin\AppData\Local\Temp\d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe
"C:\Users\Admin\AppData\Local\Temp\d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3508

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:4144

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2.exe" +s +h
3⤵
- Views/modifies file attributes
PID:5040

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:1424

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Views/modifies file attributes
PID:5024

C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe
"C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe"
2⤵
- Modifies firewall policy service
- Modifies security service
- Executes dropped EXE
- Windows security modification
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2632

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:1052

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Modify Existing Service

2

T1031

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

7

T1112

Disabling Security Tools

2

T1089

Hidden Files and Directories

2

T1158

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe
Filesize
658KB

MD5
4d693fde464e00a60c0c87d8a8c4e27c

SHA1
9efd17718385a0445d40ce1c3de86b9bd18a33a0

SHA256
d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2

SHA512
05e358afa6d9419a501125cc57fe8976cddf1b358a7a30d8158d08b439379e00d068e8c8dcde6e65de98a19bedb3ae6521ce412835c7a64348438f05042eaab4

Download Submit
C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe
Filesize
658KB

MD5
4d693fde464e00a60c0c87d8a8c4e27c

SHA1
9efd17718385a0445d40ce1c3de86b9bd18a33a0

SHA256
d8aeefe49869abecc7719bedc0eed1e0630a1c4d9208db72a06be52c9e6343f2

SHA512
05e358afa6d9419a501125cc57fe8976cddf1b358a7a30d8158d08b439379e00d068e8c8dcde6e65de98a19bedb3ae6521ce412835c7a64348438f05042eaab4

Download Submit
memory/1052-137-0x0000000000000000-mapping.dmp

Download
memory/1424-131-0x0000000000000000-mapping.dmp

Download
memory/2632-132-0x0000000000000000-mapping.dmp

Download
memory/4144-130-0x0000000000000000-mapping.dmp

Download
memory/5024-135-0x0000000000000000-mapping.dmp

Download
memory/5040-136-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads