Overview

overview

10

Static

static

3

a4d89bc54d...66.exe

windows7-x64

10

a4d89bc54d...66.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    117s
  • max time network
    129s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    20-03-2024 10:56

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General

  • Target

    a4d89bc54d799a475ea323d33599ad7c570b3b0e20366c5a3ac39303f73aa466.exe

  • Size

    369KB

  • MD5

    879f9960c061e20927d8f28d241351a0

  • SHA1

    a190fd73141fe9380653f5fe0e4177918bfb26f9

  • SHA256

    a4d89bc54d799a475ea323d33599ad7c570b3b0e20366c5a3ac39303f73aa466

  • SHA512

    cd41a31511d4681559cd35a8dfcb53791782e25a81736bf02617464d53e1f1ade78a2f153dbb380760c6ccdfbb14edbdb4357ba443d0a8ed90c59cf49136aee9

  • SSDEEP

    6144:60zKnViNh0U2FwGLpKf3F1n8E18B0rPHZTE15xv/XcD:cnViNmU26kwf3F6w8WjHZTe59c

Score
10/10
targetcompanyevasionransomware

Malware Config

Extracted

Path

C:\$Recycle.Bin\HOW TO BACK FILES.txt

Family

targetcompany

Ransom Note
Hello Your files are encrypted and can not be used We have downloaded your confidential data and are ready to publish it on our blog 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: A3D51C54C82DCB4567F8A9DE 5) You will see payment information and we can make free test decryption here 6)After payment, you will receive a tool for decrypting files, and we will delete the data that was taken from you 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 (7236) 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\a4d89bc54d799a475ea323d33599ad7c570b3b0e20366c5a3ac39303f73aa466.exe
    "C:\Users\Admin\AppData\Local\Temp\a4d89bc54d799a475ea323d33599ad7c570b3b0e20366c5a3ac39303f73aa466.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:2972
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit /set {current} bootstatuspolicy ignoreallfailures
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2016
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {current} bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2984
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit /set {current} recoveryenabled no
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2612
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {current} recoveryenabled no
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2928

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\$Recycle.Bin\HOW TO BACK FILES.txt
    Filesize

    1KB

    MD5

    ef906a48f5c2419f10be2e4a1e67ea37

    SHA1

    f9313b1660d08507eb6de7fef938c42e0505601c

    SHA256

    71fb4795358d606be0d3d8f92fae8af2a514483068cf6f5a2643c4e66fabd028

    SHA512

    19c4b7a041461bb33e6d4c6a003e85b5e7fa2e83e4469b42c9f804ef6beb703005c45b9b9a7f63175499cee3e0e2b1ce285027325a2a7932d1aa3abd6f32f442

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