darkcomet | 1f2ead28ecdc21f65c33e8f929466d39cd618c25b1ff488eaadd27302022bda5

General

Target

1.exe
Size

661KB
MD5

f0e7f5c44d69cb03d87b634c3d695c7e
SHA1

f46ef1eb3ba47a62ebf645238aad3af66ebed012
SHA256

1f2ead28ecdc21f65c33e8f929466d39cd618c25b1ff488eaadd27302022bda5
SHA512

07f66d65f728887b755137c07fd1f3941c92f6fb7dd10d3ea59e30031ac2e96cd77cfc0c364a51441047b87102b9f81ec766698ec776dcffa141d6dcdf0560fc

Score

10^/10

darkcomet sazan evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Sazan

C2

akordion.duckdns.org:1604

Mutex

DC_MUTEX-CADHQZA

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
344KSen6NjLL
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:

1.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"	1.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
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1808 msdcsc.exe
Sets file to hidden 1 TTPs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158
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:

1.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation 1.exe
Windows security modification 2 TTPs 1 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

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

pid	process
1808	msdcsc.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation	1.exe

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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

1.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	1.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.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:

1.exe

description ioc process

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

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

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

1.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	3316	1.exe
Token: SeSecurityPrivilege	3316	1.exe
Token: SeTakeOwnershipPrivilege	3316	1.exe
Token: SeLoadDriverPrivilege	3316	1.exe
Token: SeSystemProfilePrivilege	3316	1.exe
Token: SeSystemtimePrivilege	3316	1.exe
Token: SeProfSingleProcessPrivilege	3316	1.exe
Token: SeIncBasePriorityPrivilege	3316	1.exe
Token: SeCreatePagefilePrivilege	3316	1.exe
Token: SeBackupPrivilege	3316	1.exe
Token: SeRestorePrivilege	3316	1.exe
Token: SeShutdownPrivilege	3316	1.exe
Token: SeDebugPrivilege	3316	1.exe
Token: SeSystemEnvironmentPrivilege	3316	1.exe
Token: SeChangeNotifyPrivilege	3316	1.exe
Token: SeRemoteShutdownPrivilege	3316	1.exe
Token: SeUndockPrivilege	3316	1.exe
Token: SeManageVolumePrivilege	3316	1.exe
Token: SeImpersonatePrivilege	3316	1.exe
Token: SeCreateGlobalPrivilege	3316	1.exe
Token: 33	3316	1.exe
Token: 34	3316	1.exe
Token: 35	3316	1.exe
Token: 36	3316	1.exe
Token: SeIncreaseQuotaPrivilege	1808	msdcsc.exe
Token: SeSecurityPrivilege	1808	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1808	msdcsc.exe
Token: SeLoadDriverPrivilege	1808	msdcsc.exe
Token: SeSystemProfilePrivilege	1808	msdcsc.exe
Token: SeSystemtimePrivilege	1808	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1808	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1808	msdcsc.exe
Token: SeCreatePagefilePrivilege	1808	msdcsc.exe
Token: SeBackupPrivilege	1808	msdcsc.exe
Token: SeRestorePrivilege	1808	msdcsc.exe
Token: SeShutdownPrivilege	1808	msdcsc.exe
Token: SeDebugPrivilege	1808	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1808	msdcsc.exe
Token: SeChangeNotifyPrivilege	1808	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1808	msdcsc.exe
Token: SeUndockPrivilege	1808	msdcsc.exe
Token: SeManageVolumePrivilege	1808	msdcsc.exe
Token: SeImpersonatePrivilege	1808	msdcsc.exe
Token: SeCreateGlobalPrivilege	1808	msdcsc.exe
Token: 33	1808	msdcsc.exe
Token: 34	1808	msdcsc.exe
Token: 35	1808	msdcsc.exe
Token: 36	1808	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1808 msdcsc.exe

pid	process
1808	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

1.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 3316 wrote to memory of 3728	3316	1.exe	cmd.exe
PID 3316 wrote to memory of 3728	3316	1.exe	cmd.exe
PID 3316 wrote to memory of 3728	3316	1.exe	cmd.exe
PID 3316 wrote to memory of 1536	3316	1.exe	cmd.exe
PID 3316 wrote to memory of 1536	3316	1.exe	cmd.exe
PID 3316 wrote to memory of 1536	3316	1.exe	cmd.exe
PID 3728 wrote to memory of 636	3728	cmd.exe	attrib.exe
PID 3728 wrote to memory of 636	3728	cmd.exe	attrib.exe
PID 3728 wrote to memory of 636	3728	cmd.exe	attrib.exe
PID 1536 wrote to memory of 1832	1536	cmd.exe	attrib.exe
PID 1536 wrote to memory of 1832	1536	cmd.exe	attrib.exe
PID 1536 wrote to memory of 1832	1536	cmd.exe	attrib.exe
PID 3316 wrote to memory of 1808	3316	1.exe	msdcsc.exe
PID 3316 wrote to memory of 1808	3316	1.exe	msdcsc.exe
PID 3316 wrote to memory of 1808	3316	1.exe	msdcsc.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe
PID 1808 wrote to memory of 1880	1808	msdcsc.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1832 attrib.exe
636 attrib.exe

pid	process
1832	attrib.exe
636	attrib.exe

C:\Users\Admin\AppData\Local\Temp\1.exe
"C:\Users\Admin\AppData\Local\Temp\1.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3316

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\1.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:3728

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\1.exe" +s +h
3⤵
- Views/modifies file attributes
PID:636

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:1536

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Views/modifies file attributes
PID:1832

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Modifies security service
- Executes dropped EXE
- Windows security modification
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1808

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:1880

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Modify Existing Service

1

T1031

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

5

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\Documents\MSDCSC\msdcsc.exe
MD5
f0e7f5c44d69cb03d87b634c3d695c7e

SHA1
f46ef1eb3ba47a62ebf645238aad3af66ebed012

SHA256
1f2ead28ecdc21f65c33e8f929466d39cd618c25b1ff488eaadd27302022bda5

SHA512
07f66d65f728887b755137c07fd1f3941c92f6fb7dd10d3ea59e30031ac2e96cd77cfc0c364a51441047b87102b9f81ec766698ec776dcffa141d6dcdf0560fc

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
f0e7f5c44d69cb03d87b634c3d695c7e

SHA1
f46ef1eb3ba47a62ebf645238aad3af66ebed012

SHA256
1f2ead28ecdc21f65c33e8f929466d39cd618c25b1ff488eaadd27302022bda5

SHA512
07f66d65f728887b755137c07fd1f3941c92f6fb7dd10d3ea59e30031ac2e96cd77cfc0c364a51441047b87102b9f81ec766698ec776dcffa141d6dcdf0560fc

Download Submit
memory/1808-136-0x0000000000670000-0x0000000000671000-memory.dmp

Filesize
4KB

Download
memory/1880-137-0x0000000004750000-0x0000000004751000-memory.dmp

Filesize
4KB

Download
memory/3316-133-0x0000000002280000-0x0000000002281000-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