darkcomet | b6910434cad37d2d9d982f68947d7df93fbb2d63b68302f59688183c9a4935dd

General

Target

0fb89311917a7c35fe6a9937df19c35d.exe
Size

251KB
MD5

9c5373d6db48bdd5c32079243ca053b6
SHA1

9ce8117701b2d59d545b8d0cca89361027f93b98
SHA256

b6910434cad37d2d9d982f68947d7df93fbb2d63b68302f59688183c9a4935dd
SHA512

69645d8ffea903a4a109193789894173a3c60f4f6462bb6c77335bbf2b3a7c67b0ca33387de4f2fb048e30c46bed910dcc9698394fe94667582968931e991b94

Score

10^/10

darkcomet persistence rat trojan upx

Malware Config

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:

0fb89311917a7c35fe6a9937df19c35d.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.exe"	0fb89311917a7c35fe6a9937df19c35d.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

3572 msdcsc.exe

pid	process
3572	msdcsc.exe

UPX packed file 2 IoCs

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

upx

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\msdcsc.exe	upx
C:\Users\Admin\AppData\Local\Temp\msdcsc.exe	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

0fb89311917a7c35fe6a9937df19c35d.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\msdcsc.exe"	0fb89311917a7c35fe6a9937df19c35d.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

0fb89311917a7c35fe6a9937df19c35d.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: SeSecurityPrivilege	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: SeTakeOwnershipPrivilege	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: SeLoadDriverPrivilege	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: SeSystemProfilePrivilege	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: SeSystemtimePrivilege	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: SeProfSingleProcessPrivilege	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: SeIncBasePriorityPrivilege	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: SeCreatePagefilePrivilege	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: SeBackupPrivilege	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: SeRestorePrivilege	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: SeShutdownPrivilege	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: SeDebugPrivilege	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: SeSystemEnvironmentPrivilege	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: SeChangeNotifyPrivilege	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: SeRemoteShutdownPrivilege	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: SeUndockPrivilege	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: SeManageVolumePrivilege	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: SeImpersonatePrivilege	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: SeCreateGlobalPrivilege	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: 33	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: 34	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: 35	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: 36	4768	0fb89311917a7c35fe6a9937df19c35d.exe
Token: SeIncreaseQuotaPrivilege	3572	msdcsc.exe
Token: SeSecurityPrivilege	3572	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3572	msdcsc.exe
Token: SeLoadDriverPrivilege	3572	msdcsc.exe
Token: SeSystemProfilePrivilege	3572	msdcsc.exe
Token: SeSystemtimePrivilege	3572	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3572	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3572	msdcsc.exe
Token: SeCreatePagefilePrivilege	3572	msdcsc.exe
Token: SeBackupPrivilege	3572	msdcsc.exe
Token: SeRestorePrivilege	3572	msdcsc.exe
Token: SeShutdownPrivilege	3572	msdcsc.exe
Token: SeDebugPrivilege	3572	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3572	msdcsc.exe
Token: SeChangeNotifyPrivilege	3572	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3572	msdcsc.exe
Token: SeUndockPrivilege	3572	msdcsc.exe
Token: SeManageVolumePrivilege	3572	msdcsc.exe
Token: SeImpersonatePrivilege	3572	msdcsc.exe
Token: SeCreateGlobalPrivilege	3572	msdcsc.exe
Token: 33	3572	msdcsc.exe
Token: 34	3572	msdcsc.exe
Token: 35	3572	msdcsc.exe
Token: 36	3572	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

3572 msdcsc.exe

pid	process
3572	msdcsc.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

0fb89311917a7c35fe6a9937df19c35d.exemsdcsc.exe

description	pid	process	target process
PID 4768 wrote to memory of 3572	4768	0fb89311917a7c35fe6a9937df19c35d.exe	msdcsc.exe
PID 4768 wrote to memory of 3572	4768	0fb89311917a7c35fe6a9937df19c35d.exe	msdcsc.exe
PID 4768 wrote to memory of 3572	4768	0fb89311917a7c35fe6a9937df19c35d.exe	msdcsc.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe
PID 3572 wrote to memory of 4200	3572	msdcsc.exe	notepad.exe

C:\Users\Admin\AppData\Local\Temp\0fb89311917a7c35fe6a9937df19c35d.exe
"C:\Users\Admin\AppData\Local\Temp\0fb89311917a7c35fe6a9937df19c35d.exe"
1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4768

C:\Users\Admin\AppData\Local\Temp\msdcsc.exe
"C:\Users\Admin\AppData\Local\Temp\msdcsc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3572

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:4200

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

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.exe
MD5
9c5373d6db48bdd5c32079243ca053b6

SHA1
9ce8117701b2d59d545b8d0cca89361027f93b98

SHA256
b6910434cad37d2d9d982f68947d7df93fbb2d63b68302f59688183c9a4935dd

SHA512
69645d8ffea903a4a109193789894173a3c60f4f6462bb6c77335bbf2b3a7c67b0ca33387de4f2fb048e30c46bed910dcc9698394fe94667582968931e991b94

Download Submit
C:\Users\Admin\AppData\Local\Temp\msdcsc.exe
MD5
9c5373d6db48bdd5c32079243ca053b6

SHA1
9ce8117701b2d59d545b8d0cca89361027f93b98

SHA256
b6910434cad37d2d9d982f68947d7df93fbb2d63b68302f59688183c9a4935dd

SHA512
69645d8ffea903a4a109193789894173a3c60f4f6462bb6c77335bbf2b3a7c67b0ca33387de4f2fb048e30c46bed910dcc9698394fe94667582968931e991b94

Download Submit
memory/3572-0-0x0000000000000000-mapping.dmp

Download
memory/4200-3-0x0000000000000000-mapping.dmp

Download
memory/4200-4-0x0000000000860000-0x0000000000861000-memory.dmp

Filesize
4KB

Download
memory/4200-5-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads