darkcomet | f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f

Analysis

max time kernel
155s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
29/10/2022, 14:08

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General

Target

f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f.exe
Size

1.4MB
MD5

f1dce02270c994b295f4e0c501a68688
SHA1

0dbfe5bc38fc766fec9da4dc9bad677733c44dad
SHA256

f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f
SHA512

74a04f4a78a94c8c35d203dd348cc42147a51e8255c3317b37449be934a4f60f5dbf4a9d0d15ef4ae4b5c3577b5428d9f12c34213642897ad37732d4654695cf
SSDEEP

24576:Gx4Xwm93aftAyKOTyHm4yIHKib/p6e0Brc2UJ8K5+c9pB2DZJ7JsXlSV3CQOD3fv:KOT9dysmf6d/4CnR+00D7Jyf

Score

10^/10

darkcomet rat persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Rat

testingdirtypic.no-ip.biz:1701

Mutex

DC_MUTEX-K8KYHE6

Attributes

InstallPath
WinDir\rundll32.exe
gencode
hpWkLgQk4yn2
install
true
offline_keylogger
true
persistence
true
reg_key
Windows Rundll32

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\\AppData\\Local\\Temp\\WinDir\\rundll32.exe"	vbc.exe

Executes dropped EXE 1 IoCs

pid	Process
920	rundll32.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

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-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Rundll32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\WinDir\\rundll32.exe"	vbc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Rundll32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\WinDir\\rundll32.exe"	vbc.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1556 set thread context of 4896	1556	f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f.exe	80
PID 920 set thread context of 1780	920	rundll32.exe	82

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4896	vbc.exe
Token: SeSecurityPrivilege	4896	vbc.exe
Token: SeTakeOwnershipPrivilege	4896	vbc.exe
Token: SeLoadDriverPrivilege	4896	vbc.exe
Token: SeSystemProfilePrivilege	4896	vbc.exe
Token: SeSystemtimePrivilege	4896	vbc.exe
Token: SeProfSingleProcessPrivilege	4896	vbc.exe
Token: SeIncBasePriorityPrivilege	4896	vbc.exe
Token: SeCreatePagefilePrivilege	4896	vbc.exe
Token: SeBackupPrivilege	4896	vbc.exe
Token: SeRestorePrivilege	4896	vbc.exe
Token: SeShutdownPrivilege	4896	vbc.exe
Token: SeDebugPrivilege	4896	vbc.exe
Token: SeSystemEnvironmentPrivilege	4896	vbc.exe
Token: SeChangeNotifyPrivilege	4896	vbc.exe
Token: SeRemoteShutdownPrivilege	4896	vbc.exe
Token: SeUndockPrivilege	4896	vbc.exe
Token: SeManageVolumePrivilege	4896	vbc.exe
Token: SeImpersonatePrivilege	4896	vbc.exe
Token: SeCreateGlobalPrivilege	4896	vbc.exe
Token: 33	4896	vbc.exe
Token: 34	4896	vbc.exe
Token: 35	4896	vbc.exe
Token: 36	4896	vbc.exe
Token: SeIncreaseQuotaPrivilege	1780	vbc.exe
Token: SeSecurityPrivilege	1780	vbc.exe
Token: SeTakeOwnershipPrivilege	1780	vbc.exe
Token: SeLoadDriverPrivilege	1780	vbc.exe
Token: SeSystemProfilePrivilege	1780	vbc.exe
Token: SeSystemtimePrivilege	1780	vbc.exe
Token: SeProfSingleProcessPrivilege	1780	vbc.exe
Token: SeIncBasePriorityPrivilege	1780	vbc.exe
Token: SeCreatePagefilePrivilege	1780	vbc.exe
Token: SeBackupPrivilege	1780	vbc.exe
Token: SeRestorePrivilege	1780	vbc.exe
Token: SeShutdownPrivilege	1780	vbc.exe
Token: SeDebugPrivilege	1780	vbc.exe
Token: SeSystemEnvironmentPrivilege	1780	vbc.exe
Token: SeChangeNotifyPrivilege	1780	vbc.exe
Token: SeRemoteShutdownPrivilege	1780	vbc.exe
Token: SeUndockPrivilege	1780	vbc.exe
Token: SeManageVolumePrivilege	1780	vbc.exe
Token: SeImpersonatePrivilege	1780	vbc.exe
Token: SeCreateGlobalPrivilege	1780	vbc.exe
Token: 33	1780	vbc.exe
Token: 34	1780	vbc.exe
Token: 35	1780	vbc.exe
Token: 36	1780	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1780	vbc.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 1556 wrote to memory of 4896	1556	f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f.exe	80
PID 1556 wrote to memory of 4896	1556	f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f.exe	80
PID 1556 wrote to memory of 4896	1556	f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f.exe	80
PID 1556 wrote to memory of 4896	1556	f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f.exe	80
PID 1556 wrote to memory of 4896	1556	f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f.exe	80
PID 1556 wrote to memory of 4896	1556	f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f.exe	80
PID 1556 wrote to memory of 4896	1556	f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f.exe	80
PID 1556 wrote to memory of 4896	1556	f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f.exe	80
PID 1556 wrote to memory of 4896	1556	f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f.exe	80
PID 1556 wrote to memory of 4896	1556	f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f.exe	80
PID 1556 wrote to memory of 4896	1556	f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f.exe	80
PID 1556 wrote to memory of 4896	1556	f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f.exe	80
PID 1556 wrote to memory of 4896	1556	f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f.exe	80
PID 1556 wrote to memory of 4896	1556	f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f.exe	80
PID 1556 wrote to memory of 4896	1556	f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f.exe	80
PID 1556 wrote to memory of 4896	1556	f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f.exe	80
PID 4896 wrote to memory of 920	4896	vbc.exe	81
PID 4896 wrote to memory of 920	4896	vbc.exe	81
PID 4896 wrote to memory of 920	4896	vbc.exe	81
PID 920 wrote to memory of 1780	920	rundll32.exe	82
PID 920 wrote to memory of 1780	920	rundll32.exe	82
PID 920 wrote to memory of 1780	920	rundll32.exe	82
PID 920 wrote to memory of 1780	920	rundll32.exe	82
PID 920 wrote to memory of 1780	920	rundll32.exe	82
PID 920 wrote to memory of 1780	920	rundll32.exe	82
PID 920 wrote to memory of 1780	920	rundll32.exe	82
PID 920 wrote to memory of 1780	920	rundll32.exe	82
PID 920 wrote to memory of 1780	920	rundll32.exe	82
PID 920 wrote to memory of 1780	920	rundll32.exe	82
PID 920 wrote to memory of 1780	920	rundll32.exe	82
PID 920 wrote to memory of 1780	920	rundll32.exe	82
PID 920 wrote to memory of 1780	920	rundll32.exe	82
PID 920 wrote to memory of 1780	920	rundll32.exe	82
PID 920 wrote to memory of 1780	920	rundll32.exe	82
PID 920 wrote to memory of 1780	920	rundll32.exe	82

C:\Users\Admin\AppData\Local\Temp\f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f.exe
"C:\Users\Admin\AppData\Local\Temp\f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1556
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  2⤵
  - Modifies WinLogon for persistence
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4896
- - C:\Users\Admin\AppData\Local\Temp\WinDir\rundll32.exe
    "C:\Users\Admin\AppData\Local\Temp\WinDir\rundll32.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:920
  - - C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
      C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
      4⤵
      Adds Run key to start application
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:1780

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scripting

T1064

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Scripting

T1064

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\WinDir\rundll32.exe

Filesize
1.4MB

MD5
f1dce02270c994b295f4e0c501a68688

SHA1
0dbfe5bc38fc766fec9da4dc9bad677733c44dad

SHA256
f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f

SHA512
74a04f4a78a94c8c35d203dd348cc42147a51e8255c3317b37449be934a4f60f5dbf4a9d0d15ef4ae4b5c3577b5428d9f12c34213642897ad37732d4654695cf

Download Submit
C:\Users\Admin\AppData\Local\Temp\WinDir\rundll32.exe

Filesize
1.4MB

MD5
f1dce02270c994b295f4e0c501a68688

SHA1
0dbfe5bc38fc766fec9da4dc9bad677733c44dad

SHA256
f85a49531e9d2b8fba2f505b6199111d3eb7ec20c3226278ec631e868a5c6f1f

SHA512
74a04f4a78a94c8c35d203dd348cc42147a51e8255c3317b37449be934a4f60f5dbf4a9d0d15ef4ae4b5c3577b5428d9f12c34213642897ad37732d4654695cf

Download Submit
memory/920-147-0x0000000074990000-0x0000000074F41000-memory.dmp

Filesize
5.7MB

Download
memory/1556-132-0x00000000748A0000-0x0000000074E51000-memory.dmp

Filesize
5.7MB

Download
memory/1556-137-0x00000000748A0000-0x0000000074E51000-memory.dmp

Filesize
5.7MB

Download
memory/1780-146-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1780-148-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1780-149-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4896-138-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4896-136-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4896-135-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4896-142-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4896-134-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads