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Overview

overview

10

Static

static

3

b39fc2d359...4a.exe

windows7-x64

10

b39fc2d359...4a.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    78s
  • max time network
    131s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    20/03/2024, 10:57

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General

  • Target

    b39fc2d3594b643416f6ff93aa48dad1fb2e9ee1410933daaaac7ec23c86d14a.exe

  • Size

    374KB

  • MD5

    a2c68e2567e5ed1882e75e724d35d16b

  • SHA1

    0cdb5a4e701121a373deb9d6157ee698f88160bc

  • SHA256

    b39fc2d3594b643416f6ff93aa48dad1fb2e9ee1410933daaaac7ec23c86d14a

  • SHA512

    a47aaf12bf8577191773a180c31b5a4f1e8ee3629f1b962a0ae2d2bc4d4e297e0f74614a26f2aeef37c1566945cf3003252b34b91fe58ed3660036ab6ece082d

  • SSDEEP

    6144:70dryUTkT5ZLewnleutuIsjrwtO/C3mT+OFGMTZSzxyBKq:iyUc5ZLnc6uIsjrwtv2TPFGMVSzpq

Score
10/10
targetcompanyevasionransomware

Malware Config

Extracted

Path

C:\HOW TO BACK FILES.txt

Family

targetcompany

Ransom Note
Hello Your files are encrypted and can not be used To return your files in work condition you need decryption tool Follow the instructions to decrypt all your data Do not try to change or restore files yourself, this will break them If you want, on our site you can decrypt one file for free. Free test decryption allowed only for not valuable file with size less than 3MB How to get decryption tool: 1) Download and install TOR browser by this link: https://www.torproject.org/download/ 2) If TOR blocked in your country and you can't access to the link then use any VPN software 3) Run TOR browser and open the site: wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion/mallox/privateSignin 4) Copy your private ID in the input field. Your Private key: 0A8C94FC6EA8D93A9E8501CE 5) You will see payment information and we can make free test decryption here Our blog of leaked companies: wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion If you are unable to contact us through the site, then you can email us: [email protected] Waiting for a response via mail can be several days. Do not use it if you have not tried contacting through the site.�
URLs

http://wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion/mallox/privateSignin

http://wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion

Signatures

  • TargetCompany,Mallox

    TargetCompany (aka Mallox) is a ransomware which encrypts files using a combination of ChaCha20, AES-128, and Curve25519, first seen in June 2021.

    ransomwaretargetcompany
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
    ransomwareevasion
  • Renames multiple (2442) files with added filename extension

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

    ransomware
  • Enumerates connected drives 3 TTPs 24 IoCs

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

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • System policy modification 1 TTPs 1 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\b39fc2d3594b643416f6ff93aa48dad1fb2e9ee1410933daaaac7ec23c86d14a.exe
    "C:\Users\Admin\AppData\Local\Temp\b39fc2d3594b643416f6ff93aa48dad1fb2e9ee1410933daaaac7ec23c86d14a.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:2648
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit /set {current} bootstatuspolicy ignoreallfailures
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2884
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {current} bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2544
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit /set {current} recoveryenabled no
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3004
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {current} recoveryenabled no
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2852

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\HOW TO BACK FILES.txt
    Filesize

    1KB

    MD5

    206d3a42479f33b34a8d362ee7ee30c1

    SHA1

    d5fc90d15d1ff211f4b6befd017f24820a07464f

    SHA256

    18a46607662388d0574ba6db0537acddcdd4cfe0b65be98a4e27aa4e249f25c3

    SHA512

    d030bf7141d7c8a446db2eac9b6b2f473607b82c90ff4d2e3d87f3e1fe8b510a87452e2fdd3b7addae530e215f2048a42da4bd23991e14926cf2fa380553bd1c

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