Analysis

  • max time kernel
    22s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    18-02-2025 09:37

General

  • Target

    Коммерческое предложение.exe

  • Size

    279KB

  • MD5

    eced539ad810466a59e0433c892ad565

  • SHA1

    8ad3bcc29bf32e6dad21db3338d8fd339d0c4b61

  • SHA256

    f9f77ed5eb391d49883b6581aa0ddf32772d6e1ad8cf401277dfaf87ca7ee4e3

  • SHA512

    583668b2f0c75f5efba8afc39d66e8e9ca16ff5eadeb495dce7e837dd5a0ecc0001065e7add10d6bafad24014722510ca2647280fc5f9f6e882fa9357937a9cb

  • SSDEEP

    6144:pcH9nKVIEcXMVUHfwpZ6DzZmSkPcb8cfaRq7+7NE:phVQXkUHfEZ6pmhkb8UaRu+7NE

Malware Config

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 3 IoCs
  • Chaos family
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Disables Task Manager via registry modification
  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 3 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.

  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of WriteProcessMemory 30 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\Коммерческое предложение.exe
    "C:\Users\Admin\AppData\Local\Temp\Коммерческое предложение.exe"
    1⤵
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2788
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.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:2764
      • 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:2744
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2848
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2668
      • 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:2772
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2904
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2920
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2828
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:2448
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\SaloXaxlostan.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:1656
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2628
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1284
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:2948
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:2364

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\ProgramData\Adobe\Updater6\SaloXaxlostan.txt

        Filesize

        971B

        MD5

        5d1bd54f7357bc1f0328b6a54cace8c3

        SHA1

        0e3c9c9823f17de35affb7d0471915d07da88cc4

        SHA256

        11564577b46ba88ba9e0cd68b0bf758539edc0b2737e2b901b972df98cb26759

        SHA512

        ac8de963a86f2bfbe57f4e34287c99222c7c848815b83f92c6b5aec1b5e8367625a6ecd80215f54c9daad05f4c8acb13277cb9ed3bb071aa1c1575db0450eb1c

      • C:\Users\Admin\AppData\Roaming\svchost.exe

        Filesize

        279KB

        MD5

        eced539ad810466a59e0433c892ad565

        SHA1

        8ad3bcc29bf32e6dad21db3338d8fd339d0c4b61

        SHA256

        f9f77ed5eb391d49883b6581aa0ddf32772d6e1ad8cf401277dfaf87ca7ee4e3

        SHA512

        583668b2f0c75f5efba8afc39d66e8e9ca16ff5eadeb495dce7e837dd5a0ecc0001065e7add10d6bafad24014722510ca2647280fc5f9f6e882fa9357937a9cb

      • C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Notepad.lnk

        Filesize

        1B

        MD5

        d1457b72c3fb323a2671125aef3eab5d

        SHA1

        5bab61eb53176449e25c2c82f172b82cb13ffb9d

        SHA256

        8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

        SHA512

        ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

      • memory/2764-8-0x0000000001210000-0x000000000125C000-memory.dmp

        Filesize

        304KB

      • memory/2764-10-0x000007FEF5BB0000-0x000007FEF659C000-memory.dmp

        Filesize

        9.9MB

      • memory/2764-11-0x000007FEF5BB0000-0x000007FEF659C000-memory.dmp

        Filesize

        9.9MB

      • memory/2764-913-0x000007FEF5BB0000-0x000007FEF659C000-memory.dmp

        Filesize

        9.9MB

      • memory/2788-0-0x000007FEF5BB3000-0x000007FEF5BB4000-memory.dmp

        Filesize

        4KB

      • memory/2788-1-0x00000000011C0000-0x000000000120C000-memory.dmp

        Filesize

        304KB

      • memory/2788-2-0x000007FEF5BB0000-0x000007FEF659C000-memory.dmp

        Filesize

        9.9MB

      • memory/2788-9-0x000007FEF5BB0000-0x000007FEF659C000-memory.dmp

        Filesize

        9.9MB