Analysis

  • max time kernel
    137s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-12-2022 18:36

General

  • Target

    ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe

  • Size

    79KB

  • MD5

    632346fc6c6d13b004b01b450acbdb14

  • SHA1

    34813d5c989d456777158ea98ee8b68eaf6c7117

  • SHA256

    ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df

  • SHA512

    250eaffcadb6f66dcad974657a2cc2f7c8f0e306fb58a16c9bb8b0c79347d984dee7881e01fd2139512d760f2decd5acf32817ec5f62decf44f660e6431e5599

  • SSDEEP

    1536:V6UhZM4hubesrQLOJgY8ZZP8LHD4XWaNH71dLdG1iiFM2iG2zs4:BhZ5YesrQLOJgY8Zp8LHD4XWaNH71dLI

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 16 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\ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
    "C:\Users\Admin\AppData\Local\Temp\ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe"
    1⤵
    • Modifies extensions of user files
    • Checks computer location settings
    • Enumerates connected drives
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4528
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4984
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:4892
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3476
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:228
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1208

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/228-135-0x0000000000000000-mapping.dmp

  • memory/3476-134-0x0000000000000000-mapping.dmp

  • memory/4892-133-0x0000000000000000-mapping.dmp

  • memory/4984-132-0x0000000000000000-mapping.dmp