darkcomet | a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10

Resubmissions

05/02/2025, 07:18

250205-h48nyaxnbp 10

01/10/2022, 23:37

221001-3mk7jaddeq 10

Analysis

max time kernel
180s
max time network
182s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
01/10/2022, 23:37

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General

Target

a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Size

690KB
MD5

45bfee45177d62952de9c03f661c4b1a
SHA1

e12804084039f235b768a21594c9e20b9ddb0d1b
SHA256

a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10
SHA512

288247162e0cd2dca6e0d51890a70694a2ffaf0b0983f41f0048271c74af16a9eb8175c0e9f6fd91325ca93423aafd6816278e93520308ce53372e4f848f1264
SSDEEP

12288:f9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/h9lI:JZ1xuVVjfFoynPaVBUR8f+kN10EBW

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

127.0.0.1:1604

Mutex

DC_MUTEX-7R3QTTQ

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
NPore9Jz402K
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"	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe

Modifies security service 2 TTPs 1 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

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

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

pid	Process
4688	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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe

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\	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: SeSecurityPrivilege	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: SeTakeOwnershipPrivilege	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: SeLoadDriverPrivilege	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: SeSystemProfilePrivilege	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: SeSystemtimePrivilege	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: SeProfSingleProcessPrivilege	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: SeIncBasePriorityPrivilege	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: SeCreatePagefilePrivilege	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: SeBackupPrivilege	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: SeRestorePrivilege	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: SeShutdownPrivilege	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: SeDebugPrivilege	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: SeSystemEnvironmentPrivilege	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: SeChangeNotifyPrivilege	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: SeRemoteShutdownPrivilege	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: SeUndockPrivilege	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: SeManageVolumePrivilege	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: SeImpersonatePrivilege	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: SeCreateGlobalPrivilege	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: 33	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: 34	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: 35	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: 36	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
Token: SeIncreaseQuotaPrivilege	4688	msdcsc.exe
Token: SeSecurityPrivilege	4688	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4688	msdcsc.exe
Token: SeLoadDriverPrivilege	4688	msdcsc.exe
Token: SeSystemProfilePrivilege	4688	msdcsc.exe
Token: SeSystemtimePrivilege	4688	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4688	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4688	msdcsc.exe
Token: SeCreatePagefilePrivilege	4688	msdcsc.exe
Token: SeBackupPrivilege	4688	msdcsc.exe
Token: SeRestorePrivilege	4688	msdcsc.exe
Token: SeShutdownPrivilege	4688	msdcsc.exe
Token: SeDebugPrivilege	4688	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4688	msdcsc.exe
Token: SeChangeNotifyPrivilege	4688	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4688	msdcsc.exe
Token: SeUndockPrivilege	4688	msdcsc.exe
Token: SeManageVolumePrivilege	4688	msdcsc.exe
Token: SeImpersonatePrivilege	4688	msdcsc.exe
Token: SeCreateGlobalPrivilege	4688	msdcsc.exe
Token: 33	4688	msdcsc.exe
Token: 34	4688	msdcsc.exe
Token: 35	4688	msdcsc.exe
Token: 36	4688	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4688	msdcsc.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4132 wrote to memory of 4688	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe	82
PID 4132 wrote to memory of 4688	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe	82
PID 4132 wrote to memory of 4688	4132	a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe	82

C:\Users\Admin\AppData\Local\Temp\a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe
"C:\Users\Admin\AppData\Local\Temp\a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4132
- 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 use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4688

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Disabling Security Tools

T1089

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
690KB

MD5
45bfee45177d62952de9c03f661c4b1a

SHA1
e12804084039f235b768a21594c9e20b9ddb0d1b

SHA256
a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10

SHA512
288247162e0cd2dca6e0d51890a70694a2ffaf0b0983f41f0048271c74af16a9eb8175c0e9f6fd91325ca93423aafd6816278e93520308ce53372e4f848f1264

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

Filesize
690KB

MD5
45bfee45177d62952de9c03f661c4b1a

SHA1
e12804084039f235b768a21594c9e20b9ddb0d1b

SHA256
a4b196e112825232a260725c2651764ad8d2bdcc5974ee4b0a9c635c14b0eb10

SHA512
288247162e0cd2dca6e0d51890a70694a2ffaf0b0983f41f0048271c74af16a9eb8175c0e9f6fd91325ca93423aafd6816278e93520308ce53372e4f848f1264

Download Submit

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads