Overview

overview

10

Static

static

3

51e82831b3...a9.exe

windows7-x64

10

51e82831b3...a9.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    118s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    09-03-2024 06:12

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General

  • Target

    51e82831b301e02b8550ba03e60848fa28d855361e61e16b47a717dd9c9d20a9.exe

  • Size

    370KB

  • MD5

    9c9571cee52af57541df7d700f7f4fdc

  • SHA1

    5578a2b6d813773a54db2591477d3d89ff0092a8

  • SHA256

    51e82831b301e02b8550ba03e60848fa28d855361e61e16b47a717dd9c9d20a9

  • SHA512

    d2e1ee0d0ec4d1850116e3a686b7570452e650721b5d15bbfa0471645e74ada1e639670b5c754e6696052872fc5c94ee9104e2c62e5e20521decce56671d4ff3

  • SSDEEP

    6144:n0gf2LaZd9sw69XKKDH308uOGKP/bxPyIrEL3/zBg:L0aZd9xXKDHhJGulP2S

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: D4D87430C1385A8C962C21EC 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 (7148) 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\51e82831b301e02b8550ba03e60848fa28d855361e61e16b47a717dd9c9d20a9.exe
    "C:\Users\Admin\AppData\Local\Temp\51e82831b301e02b8550ba03e60848fa28d855361e61e16b47a717dd9c9d20a9.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:2344
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit /set {current} bootstatuspolicy ignoreallfailures
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1740
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {current} bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2852
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit /set {current} recoveryenabled no
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2148
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {current} recoveryenabled no
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2896

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    1KB

    MD5

    ca49b6894a1011efc4b49cb54eddc638

    SHA1

    e22578ec573b84292823f9d343b71d3ac12fc015

    SHA256

    4b3b954d402225247afa11dfcdecfaac8f4e8d17f19841de075859cdf3fa01c1

    SHA512

    ff552b2ee8bae9b11db9d015a00d5863dca863f7e6acd7daad488b3024cc8b21d86302ee5e9c3886e15478be54ef6abffab69277e26051c5058391f8ddb8bf5a

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