Overview

overview

10

Static

static

1

e_win.bin.exe

windows7-x64

10

e_win.bin.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    119s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-03-2023 19:00

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General

  • Target

    e_win.bin.exe

  • Size

    79KB

  • MD5

    3c070554f9b588ac31e317be5d5f5120

  • SHA1

    43ff7548df9f8597a4a0e8af82fb75ad622f6750

  • SHA256

    10843ab4b6e4c9592a31a72bc5f7ccfa48fd365e6fba1b100319f40125f8da6f

  • SHA512

    9eab16bd98efdb908902bc7303962dfa645248c411a407234ba03c7bd75cd8909cd41902e4a50847677d6e42c20a10e98cbb0d57f31a11f60d3eb05936ab334b

  • SSDEEP

    1536:m6UhZM4hubesrQLOJgY8ZZP8LHD4XWaNH71dLdG1iiFM2iG2zs4:ghZ5YesrQLOJgY8Zp8LHD4XWaNH71dLI

Score
10/10
babukransomware

Malware Config

Signatures

  • Babuk Locker

    RaaS first seen in 2021 initially called Vasa Locker.

    ransomwarebabuk
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies extensions of user files 12 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • 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.

    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\e_win.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe"
    1⤵
    • Modifies extensions of user files
    • Checks computer location settings
    • Enumerates connected drives
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:840
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4432
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:4496
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3156
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:3340
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1064

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    4B

    MD5

    1cb251ec0d568de6a929b520c4aed8d1

    SHA1

    372ea08cab33e71c02c651dbc83a474d32c676ea

    SHA256

    982d9e3eb996f559e633f4d194def3761d909f5a3b647d1a851fead67c32c9d1

    SHA512

    eaf2c12742cb8c161bcbd84b032b9bb98999a23282542672ca01cc6edd268f7dce9987ad6b2bc79305634f89d90b90102bcd59a57e7135b8e3ceb93c0597117b

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