Analysis

  • max time kernel
    121s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    30-07-2024 18:42

General

  • Target

    9c7713c8cd8233686ea25551b426fef708636c7fc2eea2978a9333772aa3b527.exe

  • Size

    2.3MB

  • MD5

    0610189e95dbee895c8f710b7abf0bb2

  • SHA1

    433adc0d669b364bcca0d7594eb6f58d80a467bb

  • SHA256

    9c7713c8cd8233686ea25551b426fef708636c7fc2eea2978a9333772aa3b527

  • SHA512

    85c6b68bf39cc3389e1aad5745b318f55b3ee8505060e459bb3d0a2f6d0468f1f3d3335f7a2618627b080eb342681709fa7cfe327c76c1422b2f7360575d1e73

  • SSDEEP

    24576:3aA/tcwqNwOMPhkx3W0CiO2wlqXGMvZ115EGDxsnbMQ:lOwqS0/3qSGEpRUb

Malware Config

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 3 IoCs
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • Renames multiple (181) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Disables Task Manager via registry modification
  • Drops startup file 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops desktop.ini file(s) 64 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 3 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\9c7713c8cd8233686ea25551b426fef708636c7fc2eea2978a9333772aa3b527.exe
    "C:\Users\Admin\AppData\Local\Temp\9c7713c8cd8233686ea25551b426fef708636c7fc2eea2978a9333772aa3b527.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2272
    • C:\Users\Admin\AppData\Roaming\HorrorDead Ransomare.exe
      "C:\Users\Admin\AppData\Roaming\HorrorDead Ransomare.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops desktop.ini file(s)
      • Sets desktop wallpaper using registry
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2824
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2764
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2696
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2912
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1696
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1060
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1128
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1440
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:1196
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2608
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1244
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:2620
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:2860

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Roaming\HorrorDead Ransomare.exe

        Filesize

        2.3MB

        MD5

        0610189e95dbee895c8f710b7abf0bb2

        SHA1

        433adc0d669b364bcca0d7594eb6f58d80a467bb

        SHA256

        9c7713c8cd8233686ea25551b426fef708636c7fc2eea2978a9333772aa3b527

        SHA512

        85c6b68bf39cc3389e1aad5745b318f55b3ee8505060e459bb3d0a2f6d0468f1f3d3335f7a2618627b080eb342681709fa7cfe327c76c1422b2f7360575d1e73

      • C:\Users\Admin\Desktop\HideStep.svg

        Filesize

        1B

        MD5

        d1457b72c3fb323a2671125aef3eab5d

        SHA1

        5bab61eb53176449e25c2c82f172b82cb13ffb9d

        SHA256

        8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

        SHA512

        ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

      • memory/2272-0-0x000007FEF5173000-0x000007FEF5174000-memory.dmp

        Filesize

        4KB

      • memory/2272-1-0x0000000001310000-0x000000000156A000-memory.dmp

        Filesize

        2.4MB

      • memory/2272-2-0x000007FEF5170000-0x000007FEF5B5C000-memory.dmp

        Filesize

        9.9MB

      • memory/2272-11-0x000007FEF5170000-0x000007FEF5B5C000-memory.dmp

        Filesize

        9.9MB

      • memory/2824-8-0x0000000000810000-0x0000000000A6A000-memory.dmp

        Filesize

        2.4MB

      • memory/2824-9-0x000007FEF5170000-0x000007FEF5B5C000-memory.dmp

        Filesize

        9.9MB

      • memory/2824-10-0x000007FEF5170000-0x000007FEF5B5C000-memory.dmp

        Filesize

        9.9MB

      • memory/2824-739-0x000007FEF5170000-0x000007FEF5B5C000-memory.dmp

        Filesize

        9.9MB