Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-02-2024 10:24

General

  • Target

    96ee0f084354988d85b39b85d3447055.exe

  • Size

    446KB

  • MD5

    96ee0f084354988d85b39b85d3447055

  • SHA1

    5d91d785942d0ef20fe70b050b02c66509ff9626

  • SHA256

    b631129fa4689aed881c581f2cb0f68077569ed7556ff55b72c6ab68a598e207

  • SHA512

    ca49c5396d9cd18db27222f0684d80e858f3118dba704950de7b4201fa754e5fdbb0bdd60f028c37fea72427a0d03f920c1e78e9cda4e72146684f1341f419f7

  • SSDEEP

    6144:cDYZeUustkCXhKtq92Be87GzJ1QiH04B1LB/tG9KUaoH8zQwfI3rH4+dYDlj0WvW:DeU5t5ItqXwYt29TKI7HLQ+13

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

sameg.no-ip.biz:1604

Mutex

DC_MUTEX-X2Y76GJ

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    Hoscy7HZWiFS

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Signatures

  • Darkcomet

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies firewall policy service 2 TTPs 3 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Molebox Virtualization software 1 IoCs

    Detects file using Molebox Virtualization software.

  • UPX packed file 16 IoCs

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

  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 2 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 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs
  • System policy modification 1 TTPs 3 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\96ee0f084354988d85b39b85d3447055.exe
    "C:\Users\Admin\AppData\Local\Temp\96ee0f084354988d85b39b85d3447055.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:4860
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\96ee0f084354988d85b39b85d3447055.exe" +s +h
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5104
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\96ee0f084354988d85b39b85d3447055.exe" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:3192
    • 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:4360
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:3016
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Deletes itself
      PID:2652
    • C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe
      "C:\ProgramData\Microsoft\Windows\Start Menu\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 behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:3572
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
          PID:1092

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe

      Filesize

      446KB

      MD5

      96ee0f084354988d85b39b85d3447055

      SHA1

      5d91d785942d0ef20fe70b050b02c66509ff9626

      SHA256

      b631129fa4689aed881c581f2cb0f68077569ed7556ff55b72c6ab68a598e207

      SHA512

      ca49c5396d9cd18db27222f0684d80e858f3118dba704950de7b4201fa754e5fdbb0bdd60f028c37fea72427a0d03f920c1e78e9cda4e72146684f1341f419f7

    • memory/1092-81-0x0000000000C60000-0x0000000000C61000-memory.dmp

      Filesize

      4KB

    • memory/2652-15-0x0000000000970000-0x0000000000971000-memory.dmp

      Filesize

      4KB

    • memory/3572-84-0x0000000000400000-0x00000000004C5000-memory.dmp

      Filesize

      788KB

    • memory/3572-106-0x0000000000400000-0x00000000004C5000-memory.dmp

      Filesize

      788KB

    • memory/3572-113-0x0000000000400000-0x00000000004C5000-memory.dmp

      Filesize

      788KB

    • memory/3572-112-0x0000000000400000-0x00000000004C5000-memory.dmp

      Filesize

      788KB

    • memory/3572-111-0x0000000000400000-0x00000000004C5000-memory.dmp

      Filesize

      788KB

    • memory/3572-109-0x0000000000400000-0x00000000004C5000-memory.dmp

      Filesize

      788KB

    • memory/3572-107-0x0000000000400000-0x00000000004C5000-memory.dmp

      Filesize

      788KB

    • memory/3572-85-0x0000000002420000-0x0000000002430000-memory.dmp

      Filesize

      64KB

    • memory/3572-105-0x0000000000400000-0x00000000004C5000-memory.dmp

      Filesize

      788KB

    • memory/3572-104-0x0000000000400000-0x00000000004C5000-memory.dmp

      Filesize

      788KB

    • memory/3572-103-0x0000000000400000-0x00000000004C5000-memory.dmp

      Filesize

      788KB

    • memory/3572-74-0x0000000000400000-0x00000000004C5000-memory.dmp

      Filesize

      788KB

    • memory/3572-76-0x0000000002140000-0x000000000218E000-memory.dmp

      Filesize

      312KB

    • memory/3572-77-0x0000000002420000-0x0000000002430000-memory.dmp

      Filesize

      64KB

    • memory/3572-86-0x00000000023D0000-0x00000000023D1000-memory.dmp

      Filesize

      4KB

    • memory/3572-78-0x0000000002270000-0x0000000002280000-memory.dmp

      Filesize

      64KB

    • memory/3572-79-0x0000000077EA2000-0x0000000077EA3000-memory.dmp

      Filesize

      4KB

    • memory/3572-102-0x0000000000400000-0x00000000004C5000-memory.dmp

      Filesize

      788KB

    • memory/3572-80-0x0000000002240000-0x0000000002250000-memory.dmp

      Filesize

      64KB

    • memory/3572-82-0x0000000002270000-0x0000000002280000-memory.dmp

      Filesize

      64KB

    • memory/3572-83-0x00000000760F0000-0x00000000761E0000-memory.dmp

      Filesize

      960KB

    • memory/3572-101-0x0000000002420000-0x0000000002430000-memory.dmp

      Filesize

      64KB

    • memory/3572-75-0x0000000000600000-0x0000000000601000-memory.dmp

      Filesize

      4KB

    • memory/3572-100-0x0000000000400000-0x00000000004C5000-memory.dmp

      Filesize

      788KB

    • memory/3572-97-0x0000000002240000-0x0000000002250000-memory.dmp

      Filesize

      64KB

    • memory/3572-99-0x0000000002240000-0x0000000002250000-memory.dmp

      Filesize

      64KB

    • memory/3572-98-0x00000000760F0000-0x00000000761E0000-memory.dmp

      Filesize

      960KB

    • memory/3572-91-0x0000000000400000-0x00000000004C5000-memory.dmp

      Filesize

      788KB

    • memory/3572-92-0x0000000002270000-0x0000000002280000-memory.dmp

      Filesize

      64KB

    • memory/3572-93-0x0000000002270000-0x0000000002280000-memory.dmp

      Filesize

      64KB

    • memory/3572-94-0x0000000000400000-0x00000000004C5000-memory.dmp

      Filesize

      788KB

    • memory/3572-95-0x0000000002140000-0x000000000218E000-memory.dmp

      Filesize

      312KB

    • memory/3572-96-0x0000000002420000-0x0000000002430000-memory.dmp

      Filesize

      64KB

    • memory/4860-2-0x0000000002280000-0x00000000022CE000-memory.dmp

      Filesize

      312KB

    • memory/4860-11-0x0000000002700000-0x0000000002701000-memory.dmp

      Filesize

      4KB

    • memory/4860-88-0x0000000002280000-0x00000000022CE000-memory.dmp

      Filesize

      312KB

    • memory/4860-1-0x0000000000400000-0x00000000004C5000-memory.dmp

      Filesize

      788KB

    • memory/4860-0-0x0000000000A80000-0x0000000000A81000-memory.dmp

      Filesize

      4KB

    • memory/4860-87-0x0000000000400000-0x00000000004C5000-memory.dmp

      Filesize

      788KB

    • memory/4860-89-0x00000000760F0000-0x00000000761E0000-memory.dmp

      Filesize

      960KB

    • memory/4860-5-0x0000000002460000-0x0000000002470000-memory.dmp

      Filesize

      64KB

    • memory/4860-3-0x00000000024C0000-0x00000000024D0000-memory.dmp

      Filesize

      64KB

    • memory/4860-10-0x0000000000400000-0x00000000004C5000-memory.dmp

      Filesize

      788KB

    • memory/4860-9-0x00000000024C0000-0x00000000024D0000-memory.dmp

      Filesize

      64KB

    • memory/4860-8-0x0000000000AC0000-0x0000000000AD0000-memory.dmp

      Filesize

      64KB

    • memory/4860-7-0x00000000760F0000-0x00000000761E0000-memory.dmp

      Filesize

      960KB

    • memory/4860-6-0x0000000002460000-0x0000000002470000-memory.dmp

      Filesize

      64KB

    • memory/4860-4-0x0000000077EA2000-0x0000000077EA3000-memory.dmp

      Filesize

      4KB