Overview

overview

10

Static

static

3

f3c882b856...c1.exe

windows7-x64

10

f3c882b856...c1.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    121s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    08-03-2024 21:08

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General

  • Target

    f3c882b85652bce6fe1fdfff97b092a28e610c691e1d13d11372aebed9a615c1.exe

  • Size

    370KB

  • MD5

    7219e5aa812c246f68f63491ccdb9f77

  • SHA1

    fcf0be55446d921b89c645e6ae5db56d3ceeec84

  • SHA256

    f3c882b85652bce6fe1fdfff97b092a28e610c691e1d13d11372aebed9a615c1

  • SHA512

    99f1e14f5b54806432cd0beb4555d26f5b6f9ffa0a105b869195a8dfd8f67c98d6e8a09808cb0e70024c63b1e92ae8dd64c3ae3e8e80dea7c05f3180eb6b1cdf

  • SSDEEP

    6144:50H9JCRYd6SkwEcXDVVArElO2Z3WhrGJpVxFW5cQZ2BCn:AJSYd6SJxhVArELBWhGJpVaNEy

Score
10/10
targetcompanyevasionransomware

Malware Config

Extracted

Path

F:\$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: 18D230582CCB18E122BED956 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 (7254) 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\f3c882b85652bce6fe1fdfff97b092a28e610c691e1d13d11372aebed9a615c1.exe
    "C:\Users\Admin\AppData\Local\Temp\f3c882b85652bce6fe1fdfff97b092a28e610c691e1d13d11372aebed9a615c1.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:2916
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit /set {current} bootstatuspolicy ignoreallfailures
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1548
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {current} bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2608
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit /set {current} recoveryenabled no
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2004
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {current} recoveryenabled no
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2740

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    1KB

    MD5

    931110ea113bba486f1da440b9812dfd

    SHA1

    fbfb286a9a348086767094181762f484c50a1698

    SHA256

    a19e30ac2cc5d93c307d113c876ea8516a5e1d0484c5eaf9c44854605fcfa91e

    SHA512

    464b37a2c89d6b559372c0e6dad3645a3119e7523132b66aff82c20c9367bbfbe2308118d04a2565668e3e74e6bf4525353ed0982566b96416f812b4f0001814

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