darkcomet | 4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818

General

Target

4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Size

690KB
MD5

6b5b75a9e7c39b3737029ac0bde1c152
SHA1

def2b6e36621133659ac94cc9bc60cbe7743c6ce
SHA256

4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818
SHA512

d0f74e89c78a3baf9907799790b0aba7a7ed8594db502397e52106f0a114aad5c4435a49a59f56a785427b06a59f28636d3de3e6125a82a34b3f07fedc6a4d90

Score

10^/10

darkcomet all evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

All

C2

127.0.0.1:1604

Mutex

DC_MUTEX-W1Y6BV1

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
6zPJwU2MxqV4
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:

4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.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\\Local\\Temp\\MSDCSC\\msdcsc.exe"	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1984 msdcsc.exe
Sets file to hidden 1 TTPs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

pid	process
1984	msdcsc.exe

Loads dropped DLL 2 IoCs

Processes:

4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe

pid	process
1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

msdcsc.exe4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.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

1984 msdcsc.exe

pid	process
1984	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeSecurityPrivilege	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeTakeOwnershipPrivilege	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeLoadDriverPrivilege	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeSystemProfilePrivilege	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeSystemtimePrivilege	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeProfSingleProcessPrivilege	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeIncBasePriorityPrivilege	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeCreatePagefilePrivilege	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeBackupPrivilege	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeRestorePrivilege	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeShutdownPrivilege	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeDebugPrivilege	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeSystemEnvironmentPrivilege	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeChangeNotifyPrivilege	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeRemoteShutdownPrivilege	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeUndockPrivilege	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeManageVolumePrivilege	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeImpersonatePrivilege	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeCreateGlobalPrivilege	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: 33	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: 34	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: 35	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeIncreaseQuotaPrivilege	1984	msdcsc.exe
Token: SeSecurityPrivilege	1984	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1984	msdcsc.exe
Token: SeLoadDriverPrivilege	1984	msdcsc.exe
Token: SeSystemProfilePrivilege	1984	msdcsc.exe
Token: SeSystemtimePrivilege	1984	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1984	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1984	msdcsc.exe
Token: SeCreatePagefilePrivilege	1984	msdcsc.exe
Token: SeBackupPrivilege	1984	msdcsc.exe
Token: SeRestorePrivilege	1984	msdcsc.exe
Token: SeShutdownPrivilege	1984	msdcsc.exe
Token: SeDebugPrivilege	1984	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1984	msdcsc.exe
Token: SeChangeNotifyPrivilege	1984	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1984	msdcsc.exe
Token: SeUndockPrivilege	1984	msdcsc.exe
Token: SeManageVolumePrivilege	1984	msdcsc.exe
Token: SeImpersonatePrivilege	1984	msdcsc.exe
Token: SeCreateGlobalPrivilege	1984	msdcsc.exe
Token: 33	1984	msdcsc.exe
Token: 34	1984	msdcsc.exe
Token: 35	1984	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1984 msdcsc.exe

pid	process
1984	msdcsc.exe

Suspicious use of WriteProcessMemory 43 IoCs

Processes:

4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 1784 wrote to memory of 1108	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe	cmd.exe
PID 1784 wrote to memory of 1108	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe	cmd.exe
PID 1784 wrote to memory of 1108	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe	cmd.exe
PID 1784 wrote to memory of 1108	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe	cmd.exe
PID 1784 wrote to memory of 1128	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe	cmd.exe
PID 1784 wrote to memory of 1128	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe	cmd.exe
PID 1784 wrote to memory of 1128	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe	cmd.exe
PID 1784 wrote to memory of 1128	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe	cmd.exe
PID 1108 wrote to memory of 844	1108	cmd.exe	attrib.exe
PID 1108 wrote to memory of 844	1108	cmd.exe	attrib.exe
PID 1108 wrote to memory of 844	1108	cmd.exe	attrib.exe
PID 1108 wrote to memory of 844	1108	cmd.exe	attrib.exe
PID 1128 wrote to memory of 2000	1128	cmd.exe	attrib.exe
PID 1128 wrote to memory of 2000	1128	cmd.exe	attrib.exe
PID 1128 wrote to memory of 2000	1128	cmd.exe	attrib.exe
PID 1128 wrote to memory of 2000	1128	cmd.exe	attrib.exe
PID 1784 wrote to memory of 1984	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe	msdcsc.exe
PID 1784 wrote to memory of 1984	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe	msdcsc.exe
PID 1784 wrote to memory of 1984	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe	msdcsc.exe
PID 1784 wrote to memory of 1984	1784	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe	msdcsc.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe
PID 1984 wrote to memory of 1700	1984	msdcsc.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

844 attrib.exe
2000 attrib.exe

pid	process
844	attrib.exe
2000	attrib.exe

C:\Users\Admin\AppData\Local\Temp\4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
"C:\Users\Admin\AppData\Local\Temp\4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1784

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:1108

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe" +s +h
3⤵
- Views/modifies file attributes
PID:844

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:1128

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Views/modifies file attributes
PID:2000

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
"C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1984

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:1700

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

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\AppData\Local\Temp\MSDCSC\msdcsc.exe
Filesize
690KB

MD5
6b5b75a9e7c39b3737029ac0bde1c152

SHA1
def2b6e36621133659ac94cc9bc60cbe7743c6ce

SHA256
4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818

SHA512
d0f74e89c78a3baf9907799790b0aba7a7ed8594db502397e52106f0a114aad5c4435a49a59f56a785427b06a59f28636d3de3e6125a82a34b3f07fedc6a4d90

Download Submit
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
Filesize
690KB

MD5
6b5b75a9e7c39b3737029ac0bde1c152

SHA1
def2b6e36621133659ac94cc9bc60cbe7743c6ce

SHA256
4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818

SHA512
d0f74e89c78a3baf9907799790b0aba7a7ed8594db502397e52106f0a114aad5c4435a49a59f56a785427b06a59f28636d3de3e6125a82a34b3f07fedc6a4d90

Download Submit
\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
Filesize
690KB

MD5
6b5b75a9e7c39b3737029ac0bde1c152

SHA1
def2b6e36621133659ac94cc9bc60cbe7743c6ce

SHA256
4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818

SHA512
d0f74e89c78a3baf9907799790b0aba7a7ed8594db502397e52106f0a114aad5c4435a49a59f56a785427b06a59f28636d3de3e6125a82a34b3f07fedc6a4d90

Download Submit
\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
Filesize
690KB

MD5
6b5b75a9e7c39b3737029ac0bde1c152

SHA1
def2b6e36621133659ac94cc9bc60cbe7743c6ce

SHA256
4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818

SHA512
d0f74e89c78a3baf9907799790b0aba7a7ed8594db502397e52106f0a114aad5c4435a49a59f56a785427b06a59f28636d3de3e6125a82a34b3f07fedc6a4d90

Download Submit
memory/844-57-0x0000000000000000-mapping.dmp

Download
memory/1108-55-0x0000000000000000-mapping.dmp

Download
memory/1128-56-0x0000000000000000-mapping.dmp

Download
memory/1700-65-0x0000000000000000-mapping.dmp

Download
memory/1784-54-0x0000000074C81000-0x0000000074C83000-memory.dmp

Filesize
8KB

Download
memory/1984-61-0x0000000000000000-mapping.dmp

Download
memory/2000-58-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads