darkcomet | c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f

Analysis

max time kernel
150s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
27/11/2022, 01:15

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Size

1.3MB
MD5

826524e401929fbfd99e5673645409ba
SHA1

eccefa5723029b948cbdd2b3a73043d698225c58
SHA256

c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f
SHA512

3245f5901b8c0f26af74c81323ab9e7eb5796370292c4434b73a55a69acff8a93b6486703271bbfeb14e5efdda6173c4371fab81ef5890bd11c9bae4bef66e77
SSDEEP

24576:LSQR4/RS1aLniNRAGmhXpZLB082X2osKR8vzQfP1qCdRAR90D3c0HbWal5ho5tP/:+QR4JSgLn+iJ28Kr/6QfP1/AR90jHbbS

Score

10^/10

darkcomet evasion persistence rat trojan

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

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"	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe

Executes dropped EXE 1 IoCs

pid	Process
2216	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

pid	Process
4788	attrib.exe
4732	attrib.exe

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Î¢ÐÍ¸üÐÂ = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Î¢ÐÍ¸üÐÂ = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2216 set thread context of 4612	2216	msdcsc.exe	88

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

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
2216	msdcsc.exe
2216	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: SeSecurityPrivilege	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: SeTakeOwnershipPrivilege	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: SeLoadDriverPrivilege	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: SeSystemProfilePrivilege	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: SeSystemtimePrivilege	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: SeProfSingleProcessPrivilege	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: SeIncBasePriorityPrivilege	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: SeCreatePagefilePrivilege	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: SeBackupPrivilege	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: SeRestorePrivilege	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: SeShutdownPrivilege	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: SeDebugPrivilege	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: SeSystemEnvironmentPrivilege	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: SeChangeNotifyPrivilege	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: SeRemoteShutdownPrivilege	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: SeUndockPrivilege	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: SeManageVolumePrivilege	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: SeImpersonatePrivilege	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: SeCreateGlobalPrivilege	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: 33	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: 34	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: 35	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: 36	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
Token: SeIncreaseQuotaPrivilege	2216	msdcsc.exe
Token: SeSecurityPrivilege	2216	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2216	msdcsc.exe
Token: SeLoadDriverPrivilege	2216	msdcsc.exe
Token: SeSystemProfilePrivilege	2216	msdcsc.exe
Token: SeSystemtimePrivilege	2216	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2216	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2216	msdcsc.exe
Token: SeCreatePagefilePrivilege	2216	msdcsc.exe
Token: SeBackupPrivilege	2216	msdcsc.exe
Token: SeRestorePrivilege	2216	msdcsc.exe
Token: SeShutdownPrivilege	2216	msdcsc.exe
Token: SeDebugPrivilege	2216	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2216	msdcsc.exe
Token: SeChangeNotifyPrivilege	2216	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2216	msdcsc.exe
Token: SeUndockPrivilege	2216	msdcsc.exe
Token: SeManageVolumePrivilege	2216	msdcsc.exe
Token: SeImpersonatePrivilege	2216	msdcsc.exe
Token: SeCreateGlobalPrivilege	2216	msdcsc.exe
Token: 33	2216	msdcsc.exe
Token: 34	2216	msdcsc.exe
Token: 35	2216	msdcsc.exe
Token: 36	2216	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 3484 wrote to memory of 4628	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	80
PID 3484 wrote to memory of 4628	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	80
PID 3484 wrote to memory of 4628	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	80
PID 3484 wrote to memory of 4816	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	82
PID 3484 wrote to memory of 4816	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	82
PID 3484 wrote to memory of 4816	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	82
PID 3484 wrote to memory of 4880	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	83
PID 3484 wrote to memory of 4880	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	83
PID 3484 wrote to memory of 4880	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	83
PID 3484 wrote to memory of 4880	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	83
PID 3484 wrote to memory of 4880	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	83
PID 3484 wrote to memory of 4880	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	83
PID 3484 wrote to memory of 4880	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	83
PID 3484 wrote to memory of 4880	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	83
PID 3484 wrote to memory of 4880	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	83
PID 3484 wrote to memory of 4880	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	83
PID 3484 wrote to memory of 4880	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	83
PID 3484 wrote to memory of 4880	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	83
PID 3484 wrote to memory of 4880	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	83
PID 3484 wrote to memory of 4880	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	83
PID 3484 wrote to memory of 4880	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	83
PID 3484 wrote to memory of 4880	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	83
PID 3484 wrote to memory of 4880	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	83
PID 4628 wrote to memory of 4788	4628	cmd.exe	85
PID 4628 wrote to memory of 4788	4628	cmd.exe	85
PID 4628 wrote to memory of 4788	4628	cmd.exe	85
PID 4816 wrote to memory of 4732	4816	cmd.exe	86
PID 4816 wrote to memory of 4732	4816	cmd.exe	86
PID 4816 wrote to memory of 4732	4816	cmd.exe	86
PID 3484 wrote to memory of 2216	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	87
PID 3484 wrote to memory of 2216	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	87
PID 3484 wrote to memory of 2216	3484	c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe	87
PID 2216 wrote to memory of 4612	2216	msdcsc.exe	88
PID 2216 wrote to memory of 4612	2216	msdcsc.exe	88
PID 2216 wrote to memory of 4612	2216	msdcsc.exe	88
PID 2216 wrote to memory of 4612	2216	msdcsc.exe	88
PID 2216 wrote to memory of 4612	2216	msdcsc.exe	88

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
4788	attrib.exe
4732	attrib.exe

C:\Users\Admin\AppData\Local\Temp\c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe
"C:\Users\Admin\AppData\Local\Temp\c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3484
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4628
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:4788
- 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:4816
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:4732
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  PID:4880
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2216
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    PID:4612

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
1.3MB

MD5
826524e401929fbfd99e5673645409ba

SHA1
eccefa5723029b948cbdd2b3a73043d698225c58

SHA256
c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f

SHA512
3245f5901b8c0f26af74c81323ab9e7eb5796370292c4434b73a55a69acff8a93b6486703271bbfeb14e5efdda6173c4371fab81ef5890bd11c9bae4bef66e77

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

Filesize
1.3MB

MD5
826524e401929fbfd99e5673645409ba

SHA1
eccefa5723029b948cbdd2b3a73043d698225c58

SHA256
c8be4bba9389e78ff09045395e9525199b10b7793f5403f818e2657c95dbf44f

SHA512
3245f5901b8c0f26af74c81323ab9e7eb5796370292c4434b73a55a69acff8a93b6486703271bbfeb14e5efdda6173c4371fab81ef5890bd11c9bae4bef66e77

Download Submit
memory/2216-142-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/2216-145-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/2216-143-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/3484-133-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/3484-144-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/3484-132-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download