darkcomet | d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d

Analysis

max time kernel
151s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
14/10/2022, 10:00

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General

Target

d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Size

756KB
MD5

6a929cc00fa03cb11a9cfb0b6eb54c60
SHA1

3c8bbc7129b13e3180a5394336c5d1adb3303923
SHA256

d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d
SHA512

82ff741c99c383db5245bb0411046f9f18992859d469d67f9745d659fea2b1cca4becac2c06cbc5ad6271412d52670a8278f471acb626f365799277ecfea1a7d
SSDEEP

12288:99HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/h0:XZ1xuVVjfFoynPaVBUR8f+kN10EBy

Score

10^/10

darkcomet guest16 persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

bestmagicman.no-ip.biz:1604

Mutex

DCMIN_MUTEX-SZBY77N

Attributes

InstallPath
DCSCMIN\windowsdefender.exe
gencode
qtlW6cilQ2ol
install
true
offline_keylogger
true
persistence
false
reg_key
DarkComet RAT

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\\DCSCMIN\\windowsdefender.exe"	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe

Executes dropped EXE 1 IoCs

pid	Process
4692	windowsdefender.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	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.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\DarkComet RAT = "C:\\Users\\Admin\\Documents\\DCSCMIN\\windowsdefender.exe"	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.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	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: SeSecurityPrivilege	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: SeTakeOwnershipPrivilege	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: SeLoadDriverPrivilege	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: SeSystemProfilePrivilege	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: SeSystemtimePrivilege	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: SeProfSingleProcessPrivilege	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: SeIncBasePriorityPrivilege	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: SeCreatePagefilePrivilege	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: SeBackupPrivilege	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: SeRestorePrivilege	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: SeShutdownPrivilege	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: SeDebugPrivilege	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: SeSystemEnvironmentPrivilege	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: SeChangeNotifyPrivilege	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: SeRemoteShutdownPrivilege	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: SeUndockPrivilege	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: SeManageVolumePrivilege	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: SeImpersonatePrivilege	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: SeCreateGlobalPrivilege	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: 33	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: 34	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: 35	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: 36	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
Token: SeIncreaseQuotaPrivilege	4692	windowsdefender.exe
Token: SeSecurityPrivilege	4692	windowsdefender.exe
Token: SeTakeOwnershipPrivilege	4692	windowsdefender.exe
Token: SeLoadDriverPrivilege	4692	windowsdefender.exe
Token: SeSystemProfilePrivilege	4692	windowsdefender.exe
Token: SeSystemtimePrivilege	4692	windowsdefender.exe
Token: SeProfSingleProcessPrivilege	4692	windowsdefender.exe
Token: SeIncBasePriorityPrivilege	4692	windowsdefender.exe
Token: SeCreatePagefilePrivilege	4692	windowsdefender.exe
Token: SeBackupPrivilege	4692	windowsdefender.exe
Token: SeRestorePrivilege	4692	windowsdefender.exe
Token: SeShutdownPrivilege	4692	windowsdefender.exe
Token: SeDebugPrivilege	4692	windowsdefender.exe
Token: SeSystemEnvironmentPrivilege	4692	windowsdefender.exe
Token: SeChangeNotifyPrivilege	4692	windowsdefender.exe
Token: SeRemoteShutdownPrivilege	4692	windowsdefender.exe
Token: SeUndockPrivilege	4692	windowsdefender.exe
Token: SeManageVolumePrivilege	4692	windowsdefender.exe
Token: SeImpersonatePrivilege	4692	windowsdefender.exe
Token: SeCreateGlobalPrivilege	4692	windowsdefender.exe
Token: 33	4692	windowsdefender.exe
Token: 34	4692	windowsdefender.exe
Token: 35	4692	windowsdefender.exe
Token: 36	4692	windowsdefender.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4692	windowsdefender.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3084 wrote to memory of 4692	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe	82
PID 3084 wrote to memory of 4692	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe	82
PID 3084 wrote to memory of 4692	3084	d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe	82

C:\Users\Admin\AppData\Local\Temp\d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.exe
"C:\Users\Admin\AppData\Local\Temp\d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d.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:3084
- C:\Users\Admin\Documents\DCSCMIN\windowsdefender.exe
  "C:\Users\Admin\Documents\DCSCMIN\windowsdefender.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4692

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\DCSCMIN\windowsdefender.exe

Filesize
756KB

MD5
6a929cc00fa03cb11a9cfb0b6eb54c60

SHA1
3c8bbc7129b13e3180a5394336c5d1adb3303923

SHA256
d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d

SHA512
82ff741c99c383db5245bb0411046f9f18992859d469d67f9745d659fea2b1cca4becac2c06cbc5ad6271412d52670a8278f471acb626f365799277ecfea1a7d

Download Submit
C:\Users\Admin\Documents\DCSCMIN\windowsdefender.exe

Filesize
756KB

MD5
6a929cc00fa03cb11a9cfb0b6eb54c60

SHA1
3c8bbc7129b13e3180a5394336c5d1adb3303923

SHA256
d1aec69022f03a05456873fb70b1ee296652e1f6c5ddbcc59d3ab217a210590d

SHA512
82ff741c99c383db5245bb0411046f9f18992859d469d67f9745d659fea2b1cca4becac2c06cbc5ad6271412d52670a8278f471acb626f365799277ecfea1a7d

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads