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Analysis

  • max time kernel
    121s
  • max time network
    131s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    31/05/2024, 17:28

General

  • Target

    Ransom.exe

  • Size

    376KB

  • MD5

    120c6ddfc24274b6e2e3a1ba7dc519ab

  • SHA1

    29936b1aa952a89905bf0f7b7053515fd72d8c5c

  • SHA256

    2289706f678585059502a24283e0f55d56cf477524753c606f64825bba66fca8

  • SHA512

    dd9b2fb6cd5f6f044daa80ef634078849032ebbdbd1d293bb7bcb0270aa8b7360c39addb0826c7a3ddc8714b559bf8828e8e506ac91bcb4702a72f4c8ec4850a

  • SSDEEP

    6144:KFtgKBIxGS/bbWGGJK8PpzR1WpOJOQMeEBwhUg5bBDNPbsP/qrscpyj4CVKSkn:+tgKIxfbbezR1WpOJJMjihU030/qRMra

Malware Config

Extracted

Path

F:\$RECYCLE.BIN\HOW TO BACK FILES.txt

Ransom Note
Hello Your data has been stolen and encrypted We will delete the stolen data and help with the recovery of encrypted files after payment has been made Do not try to change or restore files yourself, this will break them We provide free decryption for any 3 files up to 3MB in size on our website How to contact with us: 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: 5404F8FB122F55CF62CED036 5) You will see chat, payment information and we can make free test decryption here Our blog of leaked companies: wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion �
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.

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Renames multiple (7212) files with added filename extension

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

  • 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).

  • Interacts with shadow copies 2 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • System policy modification 1 TTPs 1 IoCs
  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\Ransom.exe
    "C:\Users\Admin\AppData\Local\Temp\Ransom.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:376
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit /set {current} bootstatuspolicy ignoreallfailures
      2⤵
        PID:2196
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c bcdedit /set {current} recoveryenabled no
        2⤵
          PID:3004
        • C:\Windows\system32\vssadmin.exe
          "C:\Windows\sysnative\vssadmin.exe" delete shadows /all /quiet
          2⤵
          • Interacts with shadow copies
          PID:2764

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • F:\$RECYCLE.BIN\HOW TO BACK FILES.txt

        Filesize

        910B

        MD5

        9b1b0fa2db87c8f756cb724635976df4

        SHA1

        7fa33703f7d784b542701258e59264985b6fd673

        SHA256

        e912541c26678d5b3dd756a29c60c9b05e512bade320631d06d8ab825905fc15

        SHA512

        d371d8b00f8500b0e04106ea19346e5e9989ee7939746dd685d34245bd906352d47b74b7f4cfd41f2598da589a15d092e4e60ffc3dd8a7a9b477aa721681a986