Analysis

  • max time kernel
    117s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    16-02-2025 04:35

General

  • Target

    $y monkey.exe

  • Size

    5.5MB

  • MD5

    be716163be9975a407155df9003080de

  • SHA1

    9bf9f4f1822acbe01deab51b62395cbd11f4be0d

  • SHA256

    d1686f28ffddfb533160ec00c50f02155ede7c13688754a042e733612b769465

  • SHA512

    de6865503fa9004724e5c8f0498d3b167e225ab360bcd496670d2dda489066be49e455d1c482749d708e5e2e6b7d6de181866c487330a71f95f1419f8f4b46f4

  • SSDEEP

    49152:rvQP1MmB0+KWntlHv6bMd+aBwuDMCKgumT2f:

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 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Interacts with shadow copies 3 TTPs 1 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 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\$y monkey.exe
    "C:\Users\Admin\AppData\Local\Temp\$y monkey.exe"
    1⤵
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2520
    • 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:2324
      • 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:2804
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2880
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2724
      • 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:272
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:900
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1496
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2044
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:2592
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Roaming\get fucked nigger
        3⤵
        • Modifies registry class
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of WriteProcessMemory
        PID:1032
        • 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\get fucked nigger"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          PID:968
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2728
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:380
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:1756
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:1088

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\get fucked nigger

        Filesize

        458B

        MD5

        d42ed271ba23eaaa4d5cc3b89ec589a5

        SHA1

        a3f9b151b80e1f8a9f1d40590d70091b09d4c846

        SHA256

        aebc2266481648163fa63b9ddacae6800d6626bdb1c569044002bf1ae536171b

        SHA512

        d03bade2c3e2e1b2767a49ed93f970ebf381400e99811de32916b9c359235d75c7770d97a30b3dbf559a9716d8f025320fd5333c94d00d46afad3c44bf9cdf00

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

        Filesize

        5.5MB

        MD5

        be716163be9975a407155df9003080de

        SHA1

        9bf9f4f1822acbe01deab51b62395cbd11f4be0d

        SHA256

        d1686f28ffddfb533160ec00c50f02155ede7c13688754a042e733612b769465

        SHA512

        de6865503fa9004724e5c8f0498d3b167e225ab360bcd496670d2dda489066be49e455d1c482749d708e5e2e6b7d6de181866c487330a71f95f1419f8f4b46f4

      • C:\Users\Admin\Desktop\EditSend.xlsx

        Filesize

        1B

        MD5

        d1457b72c3fb323a2671125aef3eab5d

        SHA1

        5bab61eb53176449e25c2c82f172b82cb13ffb9d

        SHA256

        8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

        SHA512

        ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

      • memory/2324-10-0x000007FEF5310000-0x000007FEF5CFC000-memory.dmp

        Filesize

        9.9MB

      • memory/2324-8-0x00000000002A0000-0x000000000081E000-memory.dmp

        Filesize

        5.5MB

      • memory/2324-11-0x000007FEF5310000-0x000007FEF5CFC000-memory.dmp

        Filesize

        9.9MB

      • memory/2324-962-0x000007FEF5310000-0x000007FEF5CFC000-memory.dmp

        Filesize

        9.9MB

      • memory/2520-0-0x000007FEF5313000-0x000007FEF5314000-memory.dmp

        Filesize

        4KB

      • memory/2520-1-0x0000000000A90000-0x000000000100E000-memory.dmp

        Filesize

        5.5MB

      • memory/2520-2-0x000007FEF5310000-0x000007FEF5CFC000-memory.dmp

        Filesize

        9.9MB

      • memory/2520-9-0x000007FEF5310000-0x000007FEF5CFC000-memory.dmp

        Filesize

        9.9MB