Overview

overview

10

Static

static

5

421e487168...6N.exe

windows7-x64

10

421e487168...6N.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    120s
  • max time network
    116s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-11-2024 06:20

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General

  • Target

    421e48716838b07749b30132827cd63bf478e7f3a59fc5517a5d8df5537689a6N.exe

  • Size

    1.3MB

  • MD5

    b3242661967006ba6f655869554c3f20

  • SHA1

    3df8fab6dc60e7d22d46fe21236bfbfd1434a77f

  • SHA256

    421e48716838b07749b30132827cd63bf478e7f3a59fc5517a5d8df5537689a6

  • SHA512

    28f6cabeec727a105e96a57e13e220865d80916a1f3fb762bcc9d33a8408a26d0e661a9a5a620eb471b0b9b54697cd83ff91e4c99ddc420ebb1fe5fa642756f5

  • SSDEEP

    24576:oRmJkcoQricOIQxiZY1ianytXiVgxSJ2+lCVSWZlkhDyI6t8DB6btGF1/ATNNJ3:NJZoQrbTFZY1ianUiWxSJuplkZVlIbEw

Score
10/10
darkcometguest16discoveryevasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

ipresolver.zapto.org:1604

Mutex

DC_MUTEX-1X48CDE

Attributes
  • InstallPath

    Skype/Skype.exe

  • gencode

    VSt3RyM0B19F

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    Skype

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

    trojanratdarkcomet
  • Darkcomet family
    darkcomet
  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
    persistence
  • Modifies firewall policy service 3 TTPs 3 IoCs
    evasion
  • Modifies security service 2 TTPs 1 IoCs
    evasion
  • Windows security bypass 2 TTPs 2 IoCs
    evasiontrojan
  • Adds policy Run key to start application 2 TTPs 2 IoCs
    persistence
  • Disables RegEdit via registry modification 1 IoCs
    evasion
  • Disables Task Manager via registry modification
    evasion
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

    evasion
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 1 IoCs
  • Windows security modification 2 TTPs 2 IoCs
    evasiontrojan
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs
  • System policy modification 1 TTPs 3 IoCs
    evasion
  • Views/modifies file attributes 1 TTPs 2 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\421e48716838b07749b30132827cd63bf478e7f3a59fc5517a5d8df5537689a6N.exe
    "C:\Users\Admin\AppData\Local\Temp\421e48716838b07749b30132827cd63bf478e7f3a59fc5517a5d8df5537689a6N.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Adds policy Run key to start application
    • Drops startup file
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: RenamesItself
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2068
    • C:\Users\Admin\AppData\Local\Temp\421e48716838b07749b30132827cd63bf478e7f3a59fc5517a5d8df5537689a6N.exe
      "C:\Users\Admin\AppData\Local\Temp\421e48716838b07749b30132827cd63bf478e7f3a59fc5517a5d8df5537689a6N.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Modifies firewall policy service
      • Modifies security service
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Checks computer location settings
      • Windows security modification
      • Adds Run key to start application
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:1156
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\421e48716838b07749b30132827cd63bf478e7f3a59fc5517a5d8df5537689a6N.exe" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4992
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\421e48716838b07749b30132827cd63bf478e7f3a59fc5517a5d8df5537689a6N.exe" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:1720
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:5008
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:3644
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1356

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Defense Evasion

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

Impair Defenses

3
T1562

Disable or Modify System Firewall

1
T1562.004

Disable or Modify Tools

2
T1562.001

Modify Registry

8
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

  • memory/1156-11-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1156-23-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1156-0-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1156-4-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1156-12-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1156-6-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1156-9-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1156-10-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1156-22-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1156-13-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1156-2-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1156-1-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1156-7-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1156-14-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1156-15-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1156-16-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1156-17-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1156-18-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1156-19-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1156-20-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1156-21-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1356-8-0x00000000011E0000-0x00000000011E1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2068-5-0x0000000000400000-0x0000000000556000-memory.dmp

    Filesize

    1.3MB

    Download