Analysis

  • max time kernel
    127s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    18-03-2024 02:45

General

  • Target

    3488e674a734e33410a122472c102763edb84b4184b10e041f9c774b9213bd22.exe

  • Size

    220KB

  • MD5

    6c5819190ff74ba8dcaa64b57e1eb8f7

  • SHA1

    7573ab29469e9d182f56d0b13c1dae41e9184526

  • SHA256

    3488e674a734e33410a122472c102763edb84b4184b10e041f9c774b9213bd22

  • SHA512

    f9dcb598f6ebc883239280166e6e733fc81275372574ce1017c5e89c6970701b543dd0282569755a7882d7beb64142ccb5e3e252ad8126b914b44620106c346f

  • SSDEEP

    3072:Ro9TAdr95wUV1vA89WdQvDbTimSDJF2fww83Wrp77lmjZ3brbSgNXWJa2qli3Tif:jr9mUVKQsJF2farzX1YTOyOZde5W

Malware Config

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 4 IoCs
  • Deletes shadow copies 2 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.

  • Drops startup file 3 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.

  • Drops desktop.ini file(s) 34 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 2 TTPs 1 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 34 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\3488e674a734e33410a122472c102763edb84b4184b10e041f9c774b9213bd22.exe
    "C:\Users\Admin\AppData\Local\Temp\3488e674a734e33410a122472c102763edb84b4184b10e041f9c774b9213bd22.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2760
    • C:\Users\Admin\AppData\Roaming\SatanCE.exe
      "C:\Users\Admin\AppData\Roaming\SatanCE.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • 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:2700
      • 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:2784
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2832
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:108
      • 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:2300
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2060
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1532
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:624
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:2880
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Roaming\Warning
        3⤵
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:1344
        • C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
          "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Roaming\Warning"
          4⤵
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of SetWindowsHookEx
          PID:1664
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3032
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2288
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:632
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:2988

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

        Filesize

        3KB

        MD5

        7b68fd355d67f0bc7a9515e96b68c3b5

        SHA1

        b85c198e4707891146916ce7b8c24f1b434e877e

        SHA256

        7879534505687f0d694e98c53ea51eb754def643f53cfe3a92367d162a741f41

        SHA512

        746aa8d0948196bfb2c67fe4975ad6ae19914fef6e50a1d0c3f16fbd3a775feff2a3fe5a059424ffe1653a2882fe063804f42bc7bc0b9d99040f8ab6e081eb0b

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

        Filesize

        220KB

        MD5

        6c5819190ff74ba8dcaa64b57e1eb8f7

        SHA1

        7573ab29469e9d182f56d0b13c1dae41e9184526

        SHA256

        3488e674a734e33410a122472c102763edb84b4184b10e041f9c774b9213bd22

        SHA512

        f9dcb598f6ebc883239280166e6e733fc81275372574ce1017c5e89c6970701b543dd0282569755a7882d7beb64142ccb5e3e252ad8126b914b44620106c346f

      • C:\Users\Admin\Documents\Warning

        Filesize

        18KB

        MD5

        c75b56f95828f12ebac6712cd64faefa

        SHA1

        3c5f44d61ef38a8707270adf1ddcde28dc9a25f6

        SHA256

        f6386967312097f6e26419438d6c5ff6d399d624f9099956a49e4e305417fdc2

        SHA512

        07f014a78c6b73fb7f0205a55cb390f525c7b622316b2adc32e8d3545ed9b052915cbfb5b1a7f4d498d279eb818143960f44b013e6152ef3304f5b9f3adaea56

      • memory/2700-7-0x00000000000D0000-0x000000000010E000-memory.dmp

        Filesize

        248KB

      • memory/2700-9-0x000007FEF5EE0000-0x000007FEF68CC000-memory.dmp

        Filesize

        9.9MB

      • memory/2700-11-0x000000001B050000-0x000000001B0D0000-memory.dmp

        Filesize

        512KB

      • memory/2700-463-0x000007FEF5EE0000-0x000007FEF68CC000-memory.dmp

        Filesize

        9.9MB

      • memory/2700-464-0x000000001B050000-0x000000001B0D0000-memory.dmp

        Filesize

        512KB

      • memory/2760-0-0x0000000000050000-0x000000000008E000-memory.dmp

        Filesize

        248KB

      • memory/2760-1-0x000007FEF5EE0000-0x000007FEF68CC000-memory.dmp

        Filesize

        9.9MB

      • memory/2760-8-0x000007FEF5EE0000-0x000007FEF68CC000-memory.dmp

        Filesize

        9.9MB