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Overview

overview

10

Static

static

3

4_args_f_3..._1.exe

windows7-x64

10

4_args_f_3..._1.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    198s
  • max time network
    205s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/03/2025, 07:58

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General

  • Target

    4_args_f_3_multibabyk_ST_1.exe

  • Size

    87KB

  • MD5

    fc3ce4e60c8c67dce8f4db295bf588d0

  • SHA1

    f53d85664cf5377f78f160046c7ac4f9e0d97b71

  • SHA256

    35207d1da900a08d511c6e5ed5d87e04347540fa89776486155f8184c60f41e4

  • SHA512

    75a0386450b9ab4275c955f36ff50aa04e78ac12fcd06f593db80c877a575fcd468ecf75bacd650f15faccbae799c1d77c2558efa9cc03b32e2898d6e78c8948

  • SSDEEP

    1536:zmQvhe/yPhBgzPWmisrQLOJgY8ZZP8LHD4XWaNH71dLdG1iiFM2iG2CIE:1he/yPe+/srQLOJgY8Zp8LHD4XWaNH78

Score
10/10
babukdefense_evasiondiscoveryexecutionimpactransomware

Malware Config

Signatures

  • Babuk Locker

    RaaS first seen in 2021 initially called Vasa Locker.

    ransomwarebabuk
  • Babuk family
    babuk
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Renames multiple (165) 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\4_args_f_3_multibabyk_ST_1.exe
    "C:\Users\Admin\AppData\Local\Temp\4_args_f_3_multibabyk_ST_1.exe"
    1⤵
    • Checks computer location settings
    • Enumerates connected drives
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3016
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2248
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:3648
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:584
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:4048
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1964

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    8KB

    MD5

    2af817219bb1d24a11ab839b9453b5f3

    SHA1

    f9ff9075f9472c41aeb93df2e439fe624dc143b0

    SHA256

    6a16454cad4534d51025f65277abaec0ff4a30082840154a35889445bb3ad0a0

    SHA512

    d443e149d8b097cc64b0bbbf65e3d660de43943a4b36ac4c41bfbdfe814fb895d7ba97128aa1235b85d2292b79afc451fbcb89cc6a56d33ecff7d93e18a15c30

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