darkcomet | 4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1

General

Target

4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Size

251KB
MD5

44fa6d3ed60372a6e2fc42a8d37d1a0f
SHA1

b37f23945917b4a32e20f8e0760a002164f39e85
SHA256

4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1
SHA512

1bfde61583860f33e2375cfcd0e9fcfa334520db541e47281f8d5e188ea5a0c978f4153b5bcc1a5304a7a187910d2c0dba777bd724b39ccb2bdf862f2843f63b

Score

10^/10

darkcomet sazan evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Sazan

C2

127.0.0.1:1604

Mutex

DC_MUTEX-FG9B2GA

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
j5zPqt9UKPk3
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:

4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.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"	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe

Modifies security service 2 TTPs 2 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

iexplore.exemsdcsc.exe

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

1968 msdcsc.exe

pid	process
1968	msdcsc.exe

UPX packed file 7 IoCs

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

upx

Processes:

resource	yara_rule
\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
behavioral1/memory/1716-5-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1716-7-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1716-8-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

Loads dropped DLL 2 IoCs

Processes:

4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe

pid	process
288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.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:

4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

msdcsc.exe

description pid process target process

PID 1968 set thread context of 1716 1968 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

description	pid	process	target process
PID 1968 set thread context of 1716	1968	msdcsc.exe	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exemsdcsc.exeiexplore.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeSecurityPrivilege	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeTakeOwnershipPrivilege	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeLoadDriverPrivilege	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeSystemProfilePrivilege	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeSystemtimePrivilege	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeProfSingleProcessPrivilege	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeIncBasePriorityPrivilege	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeCreatePagefilePrivilege	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeBackupPrivilege	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeRestorePrivilege	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeShutdownPrivilege	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeDebugPrivilege	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeSystemEnvironmentPrivilege	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeChangeNotifyPrivilege	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeRemoteShutdownPrivilege	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeUndockPrivilege	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeManageVolumePrivilege	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeImpersonatePrivilege	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeCreateGlobalPrivilege	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: 33	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: 34	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: 35	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeIncreaseQuotaPrivilege	1968	msdcsc.exe
Token: SeSecurityPrivilege	1968	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1968	msdcsc.exe
Token: SeLoadDriverPrivilege	1968	msdcsc.exe
Token: SeSystemProfilePrivilege	1968	msdcsc.exe
Token: SeSystemtimePrivilege	1968	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1968	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1968	msdcsc.exe
Token: SeCreatePagefilePrivilege	1968	msdcsc.exe
Token: SeBackupPrivilege	1968	msdcsc.exe
Token: SeRestorePrivilege	1968	msdcsc.exe
Token: SeShutdownPrivilege	1968	msdcsc.exe
Token: SeDebugPrivilege	1968	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1968	msdcsc.exe
Token: SeChangeNotifyPrivilege	1968	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1968	msdcsc.exe
Token: SeUndockPrivilege	1968	msdcsc.exe
Token: SeManageVolumePrivilege	1968	msdcsc.exe
Token: SeImpersonatePrivilege	1968	msdcsc.exe
Token: SeCreateGlobalPrivilege	1968	msdcsc.exe
Token: 33	1968	msdcsc.exe
Token: 34	1968	msdcsc.exe
Token: 35	1968	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	1716	iexplore.exe
Token: SeSecurityPrivilege	1716	iexplore.exe
Token: SeTakeOwnershipPrivilege	1716	iexplore.exe
Token: SeLoadDriverPrivilege	1716	iexplore.exe
Token: SeSystemProfilePrivilege	1716	iexplore.exe
Token: SeSystemtimePrivilege	1716	iexplore.exe
Token: SeProfSingleProcessPrivilege	1716	iexplore.exe
Token: SeIncBasePriorityPrivilege	1716	iexplore.exe
Token: SeCreatePagefilePrivilege	1716	iexplore.exe
Token: SeBackupPrivilege	1716	iexplore.exe
Token: SeRestorePrivilege	1716	iexplore.exe
Token: SeShutdownPrivilege	1716	iexplore.exe
Token: SeDebugPrivilege	1716	iexplore.exe
Token: SeSystemEnvironmentPrivilege	1716	iexplore.exe
Token: SeChangeNotifyPrivilege	1716	iexplore.exe
Token: SeRemoteShutdownPrivilege	1716	iexplore.exe
Token: SeUndockPrivilege	1716	iexplore.exe
Token: SeManageVolumePrivilege	1716	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

iexplore.exe

pid process

1716 iexplore.exe

pid	process
1716	iexplore.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exemsdcsc.exe

description	pid	process	target process
PID 288 wrote to memory of 1968	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe	msdcsc.exe
PID 288 wrote to memory of 1968	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe	msdcsc.exe
PID 288 wrote to memory of 1968	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe	msdcsc.exe
PID 288 wrote to memory of 1968	288	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe	msdcsc.exe
PID 1968 wrote to memory of 1716	1968	msdcsc.exe	iexplore.exe
PID 1968 wrote to memory of 1716	1968	msdcsc.exe	iexplore.exe
PID 1968 wrote to memory of 1716	1968	msdcsc.exe	iexplore.exe
PID 1968 wrote to memory of 1716	1968	msdcsc.exe	iexplore.exe
PID 1968 wrote to memory of 1716	1968	msdcsc.exe	iexplore.exe
PID 1968 wrote to memory of 1716	1968	msdcsc.exe	iexplore.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

C:\Users\Admin\AppData\Local\Temp\4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
"C:\Users\Admin\AppData\Local\Temp\4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:288

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Modifies security service
- Executes dropped EXE
- Windows security modification
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1968

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
- Modifies security service
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1716

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

6

T1112

Disabling Security Tools

2

T1089

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
44fa6d3ed60372a6e2fc42a8d37d1a0f

SHA1
b37f23945917b4a32e20f8e0760a002164f39e85

SHA256
4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1

SHA512
1bfde61583860f33e2375cfcd0e9fcfa334520db541e47281f8d5e188ea5a0c978f4153b5bcc1a5304a7a187910d2c0dba777bd724b39ccb2bdf862f2843f63b

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
44fa6d3ed60372a6e2fc42a8d37d1a0f

SHA1
b37f23945917b4a32e20f8e0760a002164f39e85

SHA256
4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1

SHA512
1bfde61583860f33e2375cfcd0e9fcfa334520db541e47281f8d5e188ea5a0c978f4153b5bcc1a5304a7a187910d2c0dba777bd724b39ccb2bdf862f2843f63b

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
44fa6d3ed60372a6e2fc42a8d37d1a0f

SHA1
b37f23945917b4a32e20f8e0760a002164f39e85

SHA256
4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1

SHA512
1bfde61583860f33e2375cfcd0e9fcfa334520db541e47281f8d5e188ea5a0c978f4153b5bcc1a5304a7a187910d2c0dba777bd724b39ccb2bdf862f2843f63b

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
44fa6d3ed60372a6e2fc42a8d37d1a0f

SHA1
b37f23945917b4a32e20f8e0760a002164f39e85

SHA256
4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1

SHA512
1bfde61583860f33e2375cfcd0e9fcfa334520db541e47281f8d5e188ea5a0c978f4153b5bcc1a5304a7a187910d2c0dba777bd724b39ccb2bdf862f2843f63b

Download Submit
memory/1716-5-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1716-6-0x00000000004B5790-mapping.dmp

Download
memory/1716-7-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1716-8-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1968-2-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads