darkcomet | 5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1

General

Target

5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Size

659KB
MD5

1d9b720db2f4e23c3502f1456f09b927
SHA1

a68034b6084112066cc02565dd519a23757c1b15
SHA256

5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1
SHA512

39cf1a7b5d12dfb19439676e9d692cc4536cd04c22872ef67370759e34dfba805e52c38ee0a58420b265aa29d8c91c563936e9be90fd578fe2418cb3c389c3d1

Score

10^/10

darkcomet sazan evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Sazan

C2

8.tcp.ngrok.io:13738

Mutex

DC_MUTEX-RYGMJ3G

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
1rG7r70RosbW
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:

5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\MSDCSC\\msdcsc.exe"	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

msdcsc.exe

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

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
Disables Task Manager via registry modification
evasion
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

4976 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
4976	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:

5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\International\Geo\Nation	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.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 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\MSDCSC\\msdcsc.exe"	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe

Drops file in Windows directory 3 IoCs

Processes:

5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe

description	ioc	process
File created	C:\Windows\MSDCSC\msdcsc.exe	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
File opened for modification	C:\Windows\MSDCSC\msdcsc.exe	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
File opened for modification	C:\Windows\MSDCSC\	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.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:

5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: SeSecurityPrivilege	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: SeTakeOwnershipPrivilege	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: SeLoadDriverPrivilege	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: SeSystemProfilePrivilege	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: SeSystemtimePrivilege	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: SeProfSingleProcessPrivilege	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: SeIncBasePriorityPrivilege	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: SeCreatePagefilePrivilege	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: SeBackupPrivilege	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: SeRestorePrivilege	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: SeShutdownPrivilege	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: SeDebugPrivilege	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: SeSystemEnvironmentPrivilege	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: SeChangeNotifyPrivilege	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: SeRemoteShutdownPrivilege	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: SeUndockPrivilege	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: SeManageVolumePrivilege	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: SeImpersonatePrivilege	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: SeCreateGlobalPrivilege	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: 33	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: 34	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: 35	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: 36	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
Token: SeIncreaseQuotaPrivilege	4976	msdcsc.exe
Token: SeSecurityPrivilege	4976	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4976	msdcsc.exe
Token: SeLoadDriverPrivilege	4976	msdcsc.exe
Token: SeSystemProfilePrivilege	4976	msdcsc.exe
Token: SeSystemtimePrivilege	4976	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4976	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4976	msdcsc.exe
Token: SeCreatePagefilePrivilege	4976	msdcsc.exe
Token: SeBackupPrivilege	4976	msdcsc.exe
Token: SeRestorePrivilege	4976	msdcsc.exe
Token: SeShutdownPrivilege	4976	msdcsc.exe
Token: SeDebugPrivilege	4976	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4976	msdcsc.exe
Token: SeChangeNotifyPrivilege	4976	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4976	msdcsc.exe
Token: SeUndockPrivilege	4976	msdcsc.exe
Token: SeManageVolumePrivilege	4976	msdcsc.exe
Token: SeImpersonatePrivilege	4976	msdcsc.exe
Token: SeCreateGlobalPrivilege	4976	msdcsc.exe
Token: 33	4976	msdcsc.exe
Token: 34	4976	msdcsc.exe
Token: 35	4976	msdcsc.exe
Token: 36	4976	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

4976 msdcsc.exe

pid	process
4976	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 4796 wrote to memory of 4844	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe	cmd.exe
PID 4796 wrote to memory of 4844	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe	cmd.exe
PID 4796 wrote to memory of 4844	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe	cmd.exe
PID 4796 wrote to memory of 4856	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe	cmd.exe
PID 4796 wrote to memory of 4856	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe	cmd.exe
PID 4796 wrote to memory of 4856	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe	cmd.exe
PID 4844 wrote to memory of 4932	4844	cmd.exe	attrib.exe
PID 4844 wrote to memory of 4932	4844	cmd.exe	attrib.exe
PID 4844 wrote to memory of 4932	4844	cmd.exe	attrib.exe
PID 4856 wrote to memory of 4944	4856	cmd.exe	attrib.exe
PID 4856 wrote to memory of 4944	4856	cmd.exe	attrib.exe
PID 4856 wrote to memory of 4944	4856	cmd.exe	attrib.exe
PID 4796 wrote to memory of 4976	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe	msdcsc.exe
PID 4796 wrote to memory of 4976	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe	msdcsc.exe
PID 4796 wrote to memory of 4976	4796	5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe	msdcsc.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe
PID 4976 wrote to memory of 5012	4976	msdcsc.exe	notepad.exe

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

Processes:

msdcsc.exe

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

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

4932 attrib.exe
4944 attrib.exe

pid	process
4932	attrib.exe
4944	attrib.exe

C:\Users\Admin\AppData\Local\Temp\5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe
"C:\Users\Admin\AppData\Local\Temp\5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4796

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:4844

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1.exe" +s +h
3⤵
- Views/modifies file attributes
PID:4932

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:4856

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Views/modifies file attributes
PID:4944

C:\Windows\MSDCSC\msdcsc.exe
"C:\Windows\MSDCSC\msdcsc.exe"
2⤵
- Modifies firewall policy service
- Modifies security service
- Executes dropped EXE
- Windows security modification
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4976

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:5012

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:\Windows\MSDCSC\msdcsc.exe
MD5
1d9b720db2f4e23c3502f1456f09b927

SHA1
a68034b6084112066cc02565dd519a23757c1b15

SHA256
5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1

SHA512
39cf1a7b5d12dfb19439676e9d692cc4536cd04c22872ef67370759e34dfba805e52c38ee0a58420b265aa29d8c91c563936e9be90fd578fe2418cb3c389c3d1

Download Submit
C:\Windows\MSDCSC\msdcsc.exe
MD5
1d9b720db2f4e23c3502f1456f09b927

SHA1
a68034b6084112066cc02565dd519a23757c1b15

SHA256
5a1c8ef15cccd50082c6862f1df8fccc40cfa7b94e7710caaf60751c714c6cb1

SHA512
39cf1a7b5d12dfb19439676e9d692cc4536cd04c22872ef67370759e34dfba805e52c38ee0a58420b265aa29d8c91c563936e9be90fd578fe2418cb3c389c3d1

Download Submit
memory/4796-114-0x0000000000750000-0x0000000000751000-memory.dmp

Filesize
4KB

Download
memory/4844-115-0x0000000000000000-mapping.dmp

Download
memory/4856-116-0x0000000000000000-mapping.dmp

Download
memory/4932-117-0x0000000000000000-mapping.dmp

Download
memory/4944-118-0x0000000000000000-mapping.dmp

Download
memory/4976-119-0x0000000000000000-mapping.dmp

Download
memory/4976-122-0x0000000002230000-0x0000000002231000-memory.dmp

Filesize
4KB

Download
memory/5012-123-0x0000000000000000-mapping.dmp

Download
memory/5012-124-0x0000000000980000-0x0000000000981000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads