Overview

overview

10

Static

static

10

68fc96d5c5...b7.exe

windows7-x64

10

68fc96d5c5...b7.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    160s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    07-03-2024 20:49

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General

  • Target

    68fc96d5c5f960966b6d7afd2e52f8e97c31afaa35091bd4656f0f2095217bb7.exe

  • Size

    283KB

  • MD5

    5d3a6ff4d3968270f9f09e351c24cb3c

  • SHA1

    4dbc0b4033cc9174e4fde4c382046205ac44b453

  • SHA256

    68fc96d5c5f960966b6d7afd2e52f8e97c31afaa35091bd4656f0f2095217bb7

  • SHA512

    33904af3e7602c0c586ec1e8a4050ac3b9a5338798c42d94aa9e6317860716b74e28c13896d352a73f3ca0708959b3730dafb94121cb28bedd6424a807493e08

  • SSDEEP

    6144:AcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37+:AcW7KEZlPzCy37+

Score
10/10
darkcometguest16evasionpersistencerattrojanupx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:1604

darkcomet3.ddns.net:1604
Mutex

DC_MUTEX-ZJFLPGE

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    J1Dp0ixzbN0M

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Signatures

  • Darkcomet

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

    trojanratdarkcomet
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Modifies firewall policy service 2 TTPs 6 IoCs
    evasion
  • Modifies security service 2 TTPs 2 IoCs
    evasion
  • Windows security bypass 2 TTPs 4 IoCs
    evasiontrojan
  • UPX dump on OEP (original entry point) 7 IoCs
  • Disables RegEdit via registry modification 2 IoCs
    evasion
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

    evasion
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • UPX packed file 7 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Windows security modification 2 TTPs 2 IoCs
    evasiontrojan
  • Adds Run key to start application 2 TTPs 3 IoCs
    persistence
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 48 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\68fc96d5c5f960966b6d7afd2e52f8e97c31afaa35091bd4656f0f2095217bb7.exe
    "C:\Users\Admin\AppData\Local\Temp\68fc96d5c5f960966b6d7afd2e52f8e97c31afaa35091bd4656f0f2095217bb7.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2496
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\68fc96d5c5f960966b6d7afd2e52f8e97c31afaa35091bd4656f0f2095217bb7.exe" +s +h
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2616
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\68fc96d5c5f960966b6d7afd2e52f8e97c31afaa35091bd4656f0f2095217bb7.exe" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:2608
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2636
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:1624
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Deletes itself
      PID:2680
    • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
      2⤵
      • Modifies firewall policy service
      • Modifies security service
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Windows security modification
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:2944
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        3⤵
        • Modifies firewall policy service
        • Modifies security service
        • Windows security bypass
        • Disables RegEdit via registry modification
        • Adds Run key to start application
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:584
        • C:\Windows\SysWOW64\notepad.exe
          notepad
          4⤵
            PID:2492

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Initial Access

    Execution

    Persistence

    Boot or Logon Autostart Execution

    2
    T1547

    Registry Run Keys / Startup Folder

    1
    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

    2
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Winlogon Helper DLL

    1
    T1547.004

    Create or Modify System Process

    2
    T1543

    Windows Service

    2
    T1543.003

    Defense Evasion

    Modify Registry

    7
    T1112

    Impair Defenses

    2
    T1562

    Disable or Modify Tools

    2
    T1562.001

    Hide Artifacts

    2
    T1564

    Hidden Files and Directories

    2
    T1564.001

    Credential Access

    Discovery

    System Information Discovery

    1
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Resource Development

    Reconnaissance

    Replay Monitor

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    Downloads

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

      283KB

      MD5

      5d3a6ff4d3968270f9f09e351c24cb3c

      SHA1

      4dbc0b4033cc9174e4fde4c382046205ac44b453

      SHA256

      68fc96d5c5f960966b6d7afd2e52f8e97c31afaa35091bd4656f0f2095217bb7

      SHA512

      33904af3e7602c0c586ec1e8a4050ac3b9a5338798c42d94aa9e6317860716b74e28c13896d352a73f3ca0708959b3730dafb94121cb28bedd6424a807493e08

      Download Submit
    • memory/584-38-0x0000000000400000-0x00000000004C7000-memory.dmp
      Filesize

      796KB

      Download
    • memory/2496-0-0x0000000000400000-0x00000000004C7000-memory.dmp
      Filesize

      796KB

      Download
    • memory/2496-1-0x0000000000240000-0x0000000000241000-memory.dmp
      Filesize

      4KB

      Download
    • memory/2496-34-0x0000000003B30000-0x0000000003BF7000-memory.dmp
      Filesize

      796KB

      Download
    • memory/2496-37-0x0000000003B30000-0x0000000003BF7000-memory.dmp
      Filesize

      796KB

      Download
    • memory/2496-43-0x0000000000400000-0x00000000004C7000-memory.dmp
      Filesize

      796KB

      Download
    • memory/2680-5-0x00000000000C0000-0x00000000000C1000-memory.dmp
      Filesize

      4KB

      Download
    • memory/2680-25-0x0000000000270000-0x0000000000271000-memory.dmp
      Filesize

      4KB

      Download
    • memory/2944-35-0x0000000000400000-0x00000000004C7000-memory.dmp
      Filesize

      796KB

      Download
    • memory/2944-39-0x00000000002C0000-0x00000000002C1000-memory.dmp
      Filesize

      4KB

      Download
    • memory/2944-40-0x0000000000400000-0x00000000004C7000-memory.dmp
      Filesize

      796KB

      Download