Analysis

  • max time kernel
    82s
  • max time network
    102s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-10-2022 16:45

General

  • Target

    e08f17b42e47bf973bf866f167a49b931b99fe1b50bc820078ac2644bd8c209c.exe

  • Size

    79KB

  • MD5

    13662706c856d1c853a6f365094daf12

  • SHA1

    a1530c0b0d04187bde9df1482dec9c9b93925932

  • SHA256

    e08f17b42e47bf973bf866f167a49b931b99fe1b50bc820078ac2644bd8c209c

  • SHA512

    32534aa723f87216fde47c3532f9c73f0e24c89aa4cf6eefc68561e40b6f1b1759b5da14f78792e69c61cfb641568ec771df69956ac9749791f1e3d4592cd3ec

  • SSDEEP

    1536:G6UhZM4hubesrQLOJgY8ZZP8LHD4XWaNH71dLdG1iiFM2iG2zs4:AhZ5YesrQLOJgY8Zp8LHD4XWaNH71dLI

Score
10/10

Malware Config

Signatures

  • Babuk Locker

    RaaS first seen in 2021 initially called Vasa Locker.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies extensions of user files 9 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Enumerates connected drives 3 TTPs 24 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e08f17b42e47bf973bf866f167a49b931b99fe1b50bc820078ac2644bd8c209c.exe
    "C:\Users\Admin\AppData\Local\Temp\e08f17b42e47bf973bf866f167a49b931b99fe1b50bc820078ac2644bd8c209c.exe"
    1⤵
    • Modifies extensions of user files
    • Checks computer location settings
    • Enumerates connected drives
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4748
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:336
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:720
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3712
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:2788
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2088
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:1072
    • C:\Windows\system32\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\How To Restore Your Files.txt
      1⤵
        PID:4668

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Defense Evasion

      File Deletion

      2
      T1107

      Discovery

      Query Registry

      2
      T1012

      System Information Discovery

      3
      T1082

      Peripheral Device Discovery

      1
      T1120

      Impact

      Inhibit System Recovery

      2
      T1490

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\Desktop\How To Restore Your Files.txt
        Filesize

        132B

        MD5

        5bcf8213c4f32ff2739696be4f2d6323

        SHA1

        ae5a7c6a65e993efe2fcf9512f2cb8de946a6182

        SHA256

        0d80e9031513c9bd5fc9f13e7786ded8f54bd8ddfe3944948f7e55880365a98c

        SHA512

        7348a510a5209d7b75667b8367c1b4d6137c3757638ffb34b17f7158da48d264f11785885fd7fc30535f765e20667f8533f56073ac3a59eb42a940bd6313c164

      • memory/336-132-0x0000000000000000-mapping.dmp
      • memory/720-133-0x0000000000000000-mapping.dmp
      • memory/2788-135-0x0000000000000000-mapping.dmp
      • memory/3712-134-0x0000000000000000-mapping.dmp