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Analysis

  • max time kernel
    122s
  • max time network
    128s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    20/03/2024, 10:54

General

  • Target

    374a979d2b8b45d23e3310676256624ab96bd604c2eb11f327c3e5044a95654a.exe

  • Size

    372KB

  • MD5

    05f62ecabc68ee01d8274a3c97f5b101

  • SHA1

    8128819b7fa55a7a331e933fce52051c66d5e72d

  • SHA256

    374a979d2b8b45d23e3310676256624ab96bd604c2eb11f327c3e5044a95654a

  • SHA512

    e53afc5c9f4cba52c521dbc6f24144bce4f182bdc40a39f94b0005d335cd5384472c48fb04b1e1f6e9dc0a94e58739d6ccda4eff9114f5020054a95c7b903df8

  • SSDEEP

    6144:MfkWFheyVxcO8fo66ZYB9LEpvkWohWS4rNaLGU:BAVgfl6iYpcWot5

Malware Config

Extracted

Path

\Device\HarddiskVolume1\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: F85A8433EBC686A0077E66C1 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.

  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • Renames multiple (2796) 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).

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\374a979d2b8b45d23e3310676256624ab96bd604c2eb11f327c3e5044a95654a.exe
    "C:\Users\Admin\AppData\Local\Temp\374a979d2b8b45d23e3310676256624ab96bd604c2eb11f327c3e5044a95654a.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:2232
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit /set {current} bootstatuspolicy ignoreallfailures
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3016
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {current} bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2640
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit /set {current} recoveryenabled no
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2520
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {current} recoveryenabled no
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2636

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\debugLog.txt

    Filesize

    1KB

    MD5

    447d3d5481e27e733a8e359af4db21f6

    SHA1

    b8f897df111ffd0ee5cb17866acd4a6b470a2ed2

    SHA256

    d79c4ca7122f4abbca3da3db70f2b2059e655ee3cfed35291d549bced27f5ba8

    SHA512

    027cba8c6116ca3067f49b340819f269279b90e06eed9a2a6f2c01572a35a82a742e79852d67ceb86fd18f399441fcd0f91b6b70848ff46986773e1c1fd343bb

  • C:\Users\Admin\AppData\Local\Temp\debugLog.txt

    Filesize

    4KB

    MD5

    8527e01b0a95bcb77890a7bbc27f2a88

    SHA1

    690b19619aac200bf9f89e1aa6b1becbb67f0a48

    SHA256

    a831fc9da8c4317b07b1d6e7c4a30fae138d644e39b9ac61672d6802c03bcc68

    SHA512

    4ff52ffc13efcc742f0033bd73087a32c07b50519e4923ed99e81499e444f5d60bf181587d87e3164ab4e5a1e4caffeedf2a07041f31d3d9f9ba29df4cd4a029

  • \Device\HarddiskVolume1\HOW TO BACK FILES.txt

    Filesize

    1KB

    MD5

    7f973021e38755a8d055a18782b1048f

    SHA1

    3e92e6edbb2ed92ae386dec7a569d1447b87bb2c

    SHA256

    a530ca79c8e236c535cbe799050fa8150c8ac826989efb256f24654f7a447a33

    SHA512

    c3951d2500102aca467fb73ba6faf539719108cb4b1b7f497f0236538fbcbd0da55b7657e343a44760297e892886bf926a9df25abeaeb6f60beedcf8e72b8fdf