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Analysis

  • max time kernel
    118s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    01/02/2024, 07:24

General

  • Target

    35121acf69b96b25f3634ca8343ddfd7d27f24d3569f2d6f2013ac679028bcf0.exe

  • Size

    216KB

  • MD5

    3e4cbdec10b63697ff63b946819a3d52

  • SHA1

    ef8309676085915c594596577dc8fcecd87f6d2d

  • SHA256

    35121acf69b96b25f3634ca8343ddfd7d27f24d3569f2d6f2013ac679028bcf0

  • SHA512

    b47c91bee006b20a4feff82628e8c043d41c87fa42010d85a07999da02e01ac684ddb4f121861c460a045374c49f14470dd2e6ce74bb4325bcf1f536353e4182

  • SSDEEP

    3072:q17DaAz38w3vz7F6PFwgBZTGFKQ+avVe+gGooSlFC2OLKKZAFEMpo4Iv1k:ab8eF6Pf2KQ+aVB2fJqh4Id

Score
9/10

Malware Config

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Renames multiple (297) files with added filename extension

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

  • Drops desktop.ini file(s) 1 IoCs
  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Modifies boot configuration data using bcdedit 4 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 2 IoCs

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

  • Modifies Control Panel 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 19 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 48 IoCs
  • 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\35121acf69b96b25f3634ca8343ddfd7d27f24d3569f2d6f2013ac679028bcf0.exe
    "C:\Users\Admin\AppData\Local\Temp\35121acf69b96b25f3634ca8343ddfd7d27f24d3569f2d6f2013ac679028bcf0.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Modifies Control Panel
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2168
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2136
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1000
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c wmic SHADOWCOPY DELETE
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2664
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic SHADOWCOPY DELETE
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:440
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit / set{ default } recoveryenabled No
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2148
      • C:\Windows\system32\bcdedit.exe
        bcdedit / set{ default } recoveryenabled No
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2936
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit / set{ default } bootstatuspolicy ignoreallfailures
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2420
      • C:\Windows\system32\bcdedit.exe
        bcdedit / set{ default } bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:1048
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2312
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:788
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c wmic SHADOWCOPY DELETE
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3028
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic SHADOWCOPY DELETE
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2512
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit / set{ default } recoveryenabled No
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1508
      • C:\Windows\system32\bcdedit.exe
        bcdedit / set{ default } recoveryenabled No
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2944
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit / set{ default } bootstatuspolicy ignoreallfailures
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1156
      • C:\Windows\system32\bcdedit.exe
        bcdedit / set{ default } bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:1596
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:872

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Adobe\Acrobat\9.0\Replicate\WhatHappened.txt

    Filesize

    1KB

    MD5

    b05e32b7e78e82f01f6f0c7d1411ee67

    SHA1

    2e1dda46f8561858b378d19a24b839062f794274

    SHA256

    f058bc2a88431119f286f2708751f25449dc1d58e1c87de3bb38aff764c814a8

    SHA512

    6cb7c842a48b9f982ac87280ded95e206e2b9055f9f51ea84f6060470a61a35decbb688650c0d6b7c318df018078af0c0a1afe0ce65db1b460d75ae7800e2d3c