darkcomet | 764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed

Analysis

max time kernel
200s
max time network
208s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
07/11/2022, 16:01

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General

Target

764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Size

658KB
MD5

0674a60816e7162d22f1832b3df30b31
SHA1

d750d65c5d9765c0bfacb9a1b57858661315acdc
SHA256

764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed
SHA512

dea1a1a449314d41436a56e1fe0d1fcc787eb930cb3389828b8364c1a426cd1505bdeb1e404522501f177aecd45f02376ca2310a0468eaf98ae1d7eadd478426
SSDEEP

12288:S9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hV:+Z1xuVVjfFoynPaVBUR8f+kN10EBz

Score

10^/10

darkcomet guest16 persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

127.0.0.1:1604

Mutex

DC_MUTEX-DC6HLND

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
PPwM5rwApZoL
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

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"	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe

Executes dropped EXE 1 IoCs

pid	Process
3772	msdcsc.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	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe

Adds Run key to start application 2 TTPs 1 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\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.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

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeSecurityPrivilege	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeTakeOwnershipPrivilege	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeLoadDriverPrivilege	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeSystemProfilePrivilege	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeSystemtimePrivilege	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeProfSingleProcessPrivilege	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeIncBasePriorityPrivilege	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeCreatePagefilePrivilege	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeBackupPrivilege	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeRestorePrivilege	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeShutdownPrivilege	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeDebugPrivilege	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeSystemEnvironmentPrivilege	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeChangeNotifyPrivilege	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeRemoteShutdownPrivilege	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeUndockPrivilege	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeManageVolumePrivilege	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeImpersonatePrivilege	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeCreateGlobalPrivilege	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: 33	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: 34	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: 35	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: 36	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeIncreaseQuotaPrivilege	3772	msdcsc.exe
Token: SeSecurityPrivilege	3772	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3772	msdcsc.exe
Token: SeLoadDriverPrivilege	3772	msdcsc.exe
Token: SeSystemProfilePrivilege	3772	msdcsc.exe
Token: SeSystemtimePrivilege	3772	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3772	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3772	msdcsc.exe
Token: SeCreatePagefilePrivilege	3772	msdcsc.exe
Token: SeBackupPrivilege	3772	msdcsc.exe
Token: SeRestorePrivilege	3772	msdcsc.exe
Token: SeShutdownPrivilege	3772	msdcsc.exe
Token: SeDebugPrivilege	3772	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3772	msdcsc.exe
Token: SeChangeNotifyPrivilege	3772	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3772	msdcsc.exe
Token: SeUndockPrivilege	3772	msdcsc.exe
Token: SeManageVolumePrivilege	3772	msdcsc.exe
Token: SeImpersonatePrivilege	3772	msdcsc.exe
Token: SeCreateGlobalPrivilege	3772	msdcsc.exe
Token: 33	3772	msdcsc.exe
Token: 34	3772	msdcsc.exe
Token: 35	3772	msdcsc.exe
Token: 36	3772	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3772	msdcsc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2100 wrote to memory of 3772	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe	80
PID 2100 wrote to memory of 3772	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe	80
PID 2100 wrote to memory of 3772	2100	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe	80
PID 3772 wrote to memory of 2200	3772	msdcsc.exe	81
PID 3772 wrote to memory of 2200	3772	msdcsc.exe	81
PID 3772 wrote to memory of 2200	3772	msdcsc.exe	81
PID 3772 wrote to memory of 4440	3772	msdcsc.exe	82
PID 3772 wrote to memory of 4440	3772	msdcsc.exe	82

C:\Users\Admin\AppData\Local\Temp\764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
"C:\Users\Admin\AppData\Local\Temp\764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2100
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3772
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    PID:2200
- - C:\Windows\explorer.exe
    "C:\Windows\explorer.exe"
    3⤵
    PID:4440

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
658KB

MD5
0674a60816e7162d22f1832b3df30b31

SHA1
d750d65c5d9765c0bfacb9a1b57858661315acdc

SHA256
764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed

SHA512
dea1a1a449314d41436a56e1fe0d1fcc787eb930cb3389828b8364c1a426cd1505bdeb1e404522501f177aecd45f02376ca2310a0468eaf98ae1d7eadd478426

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

Filesize
658KB

MD5
0674a60816e7162d22f1832b3df30b31

SHA1
d750d65c5d9765c0bfacb9a1b57858661315acdc

SHA256
764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed

SHA512
dea1a1a449314d41436a56e1fe0d1fcc787eb930cb3389828b8364c1a426cd1505bdeb1e404522501f177aecd45f02376ca2310a0468eaf98ae1d7eadd478426

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads