Overview

overview

10

Static

static

3

2024-09-04...er.exe

windows7-x64

10

2024-09-04...er.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    130s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-09-2024 00:48

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General

  • Target

    2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe

  • Size

    79KB

  • MD5

    cd80dc7644c812853899d925af527c5d

  • SHA1

    945a5ab18824be709dd5db3a8a1dc477396c3fe7

  • SHA256

    cb5e69c29c3e7d54245d3f32d8f4f153c9f6b6704c96c92bae513e28f01208de

  • SHA512

    d666f0fe3e00dd1a27cc83ebce0b030572fe52aa48c212efa94005cdff2264c97dbfde2c51a16f1823a0837d47f8a75633416ad71944ec2a128c143f8b1b3e0f

  • SSDEEP

    1536:PJkWBeGovEb+srQLOJgY8ZZP8LHD4XWaNH71dLdG1iiFM2iG2vsf0:DBeJs+srQLOJgY8Zp8LHD4XWaNH71dLH

Score
10/10
babukdefense_evasiondiscoveryexecutionimpactransomware

Malware Config

Signatures

  • Babuk Locker

    RaaS first seen in 2021 initially called Vasa Locker.

    ransomwarebabuk
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Renames multiple (192) files with added filename extension

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

    ransomware
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Enumerates connected drives 3 TTPs 23 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).

  • 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.

    discovery
  • Interacts with shadow copies 3 TTPs 2 IoCs

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

    ransomware
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe"
    1⤵
    • Checks computer location settings
    • Enumerates connected drives
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3296
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4476
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1964
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3268
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1172
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4324,i,12198811467968044966,17227406646827438786,262144 --variations-seed-version --mojo-platform-channel-handle=4140 /prefetch:8
    1⤵
      PID:4128
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4844

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\How to decrypt your files.txt
      Filesize

      4B

      MD5

      1cb251ec0d568de6a929b520c4aed8d1

      SHA1

      372ea08cab33e71c02c651dbc83a474d32c676ea

      SHA256

      982d9e3eb996f559e633f4d194def3761d909f5a3b647d1a851fead67c32c9d1

      SHA512

      eaf2c12742cb8c161bcbd84b032b9bb98999a23282542672ca01cc6edd268f7dce9987ad6b2bc79305634f89d90b90102bcd59a57e7135b8e3ceb93c0597117b

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