darkcomet | 6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7

General

Target

6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Size

756KB
MD5

fc31e56ab0b5fc0cf54c77018ac02c4f
SHA1

960431fb7697fb10d517a0a1eba6e674c2634886
SHA256

6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7
SHA512

5a78bd769845247154949a3074883920a2ce7eeaff2588ead01054739aba114e5aad9b1571d863dbdb8c0b8cab5df452c30ba3992d1ca95ef578c9a880c139ae

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

39.48.14.238:1604

Mutex

DC_MUTEX-2888LM2

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
WpcmlJsqmTWl
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:

6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.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"	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.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

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

Windows security bypass 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

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1812 msdcsc.exe
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

816 attrib.exe
1808 attrib.exe

pid	process
1812	msdcsc.exe

pid	process
816	attrib.exe
1808	attrib.exe

Loads dropped DLL 2 IoCs

Processes:

6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe

pid	process
2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.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:

6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.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

1812 msdcsc.exe

pid	process
1812	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: SeSecurityPrivilege	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: SeTakeOwnershipPrivilege	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: SeLoadDriverPrivilege	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: SeSystemProfilePrivilege	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: SeSystemtimePrivilege	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: SeProfSingleProcessPrivilege	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: SeIncBasePriorityPrivilege	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: SeCreatePagefilePrivilege	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: SeBackupPrivilege	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: SeRestorePrivilege	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: SeShutdownPrivilege	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: SeDebugPrivilege	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: SeSystemEnvironmentPrivilege	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: SeChangeNotifyPrivilege	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: SeRemoteShutdownPrivilege	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: SeUndockPrivilege	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: SeManageVolumePrivilege	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: SeImpersonatePrivilege	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: SeCreateGlobalPrivilege	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: 33	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: 34	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: 35	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
Token: SeIncreaseQuotaPrivilege	1812	msdcsc.exe
Token: SeSecurityPrivilege	1812	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1812	msdcsc.exe
Token: SeLoadDriverPrivilege	1812	msdcsc.exe
Token: SeSystemProfilePrivilege	1812	msdcsc.exe
Token: SeSystemtimePrivilege	1812	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1812	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1812	msdcsc.exe
Token: SeCreatePagefilePrivilege	1812	msdcsc.exe
Token: SeBackupPrivilege	1812	msdcsc.exe
Token: SeRestorePrivilege	1812	msdcsc.exe
Token: SeShutdownPrivilege	1812	msdcsc.exe
Token: SeDebugPrivilege	1812	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1812	msdcsc.exe
Token: SeChangeNotifyPrivilege	1812	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1812	msdcsc.exe
Token: SeUndockPrivilege	1812	msdcsc.exe
Token: SeManageVolumePrivilege	1812	msdcsc.exe
Token: SeImpersonatePrivilege	1812	msdcsc.exe
Token: SeCreateGlobalPrivilege	1812	msdcsc.exe
Token: 33	1812	msdcsc.exe
Token: 34	1812	msdcsc.exe
Token: 35	1812	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1812 msdcsc.exe

pid	process
1812	msdcsc.exe

Suspicious use of WriteProcessMemory 43 IoCs

Processes:

6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 2036 wrote to memory of 1968	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe	cmd.exe
PID 2036 wrote to memory of 1968	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe	cmd.exe
PID 2036 wrote to memory of 1968	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe	cmd.exe
PID 2036 wrote to memory of 1968	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe	cmd.exe
PID 2036 wrote to memory of 1936	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe	cmd.exe
PID 2036 wrote to memory of 1936	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe	cmd.exe
PID 2036 wrote to memory of 1936	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe	cmd.exe
PID 2036 wrote to memory of 1936	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe	cmd.exe
PID 1968 wrote to memory of 816	1968	cmd.exe	attrib.exe
PID 1968 wrote to memory of 816	1968	cmd.exe	attrib.exe
PID 1968 wrote to memory of 816	1968	cmd.exe	attrib.exe
PID 1968 wrote to memory of 816	1968	cmd.exe	attrib.exe
PID 1936 wrote to memory of 1808	1936	cmd.exe	attrib.exe
PID 1936 wrote to memory of 1808	1936	cmd.exe	attrib.exe
PID 1936 wrote to memory of 1808	1936	cmd.exe	attrib.exe
PID 1936 wrote to memory of 1808	1936	cmd.exe	attrib.exe
PID 2036 wrote to memory of 1812	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe	msdcsc.exe
PID 2036 wrote to memory of 1812	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe	msdcsc.exe
PID 2036 wrote to memory of 1812	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe	msdcsc.exe
PID 2036 wrote to memory of 1812	2036	6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe	msdcsc.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	msdcsc.exe	notepad.exe
PID 1812 wrote to memory of 1252	1812	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

816 attrib.exe
1808 attrib.exe

pid	process
816	attrib.exe
1808	attrib.exe

C:\Users\Admin\AppData\Local\Temp\6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe
"C:\Users\Admin\AppData\Local\Temp\6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2036

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:1968

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:816

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:1936

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:1808

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Modifies security service
- Windows security bypass
- Executes dropped EXE
- Windows security modification
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1812

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:1252

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

6

T1112

Disabling Security Tools

2

T1089

Hidden Files and Directories

2

T1158

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
Filesize
756KB

MD5
fc31e56ab0b5fc0cf54c77018ac02c4f

SHA1
960431fb7697fb10d517a0a1eba6e674c2634886

SHA256
6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7

SHA512
5a78bd769845247154949a3074883920a2ce7eeaff2588ead01054739aba114e5aad9b1571d863dbdb8c0b8cab5df452c30ba3992d1ca95ef578c9a880c139ae

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
756KB

MD5
fc31e56ab0b5fc0cf54c77018ac02c4f

SHA1
960431fb7697fb10d517a0a1eba6e674c2634886

SHA256
6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7

SHA512
5a78bd769845247154949a3074883920a2ce7eeaff2588ead01054739aba114e5aad9b1571d863dbdb8c0b8cab5df452c30ba3992d1ca95ef578c9a880c139ae

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
756KB

MD5
fc31e56ab0b5fc0cf54c77018ac02c4f

SHA1
960431fb7697fb10d517a0a1eba6e674c2634886

SHA256
6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7

SHA512
5a78bd769845247154949a3074883920a2ce7eeaff2588ead01054739aba114e5aad9b1571d863dbdb8c0b8cab5df452c30ba3992d1ca95ef578c9a880c139ae

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
756KB

MD5
fc31e56ab0b5fc0cf54c77018ac02c4f

SHA1
960431fb7697fb10d517a0a1eba6e674c2634886

SHA256
6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7

SHA512
5a78bd769845247154949a3074883920a2ce7eeaff2588ead01054739aba114e5aad9b1571d863dbdb8c0b8cab5df452c30ba3992d1ca95ef578c9a880c139ae

Download Submit
memory/816-57-0x0000000000000000-mapping.dmp

Download
memory/1252-65-0x0000000000000000-mapping.dmp

Download
memory/1808-58-0x0000000000000000-mapping.dmp

Download
memory/1812-61-0x0000000000000000-mapping.dmp

Download
memory/1936-56-0x0000000000000000-mapping.dmp

Download
memory/1968-55-0x0000000000000000-mapping.dmp

Download
memory/2036-54-0x0000000075D51000-0x0000000075D53000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads