Overview

overview

10

Static

static

3

b90687658f...ec.exe

windows7-x64

10

b90687658f...ec.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    136s
  • max time network
    161s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240319-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-03-2024 10:57

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General

  • Target

    b90687658fb7f9454da31634cc64b844e4121d2a359b206d00999c88a543d7ec.exe

  • Size

    371KB

  • MD5

    20b9261fe6cdfc31916fcb75b065f225

  • SHA1

    a323c491195c8a2caabd9aeed18152008b485e39

  • SHA256

    b90687658fb7f9454da31634cc64b844e4121d2a359b206d00999c88a543d7ec

  • SHA512

    a83b558a9820e03cfab908899e8ae5c150cb2509c23f11ddcb8e85b58dbd82d39d3f0047b17fe930caec0320ceae0211c4d3bf4fd7f4868e14d9c33f852f4ed8

  • SSDEEP

    6144:Y0LeYyBiqCw5wLzsEtA6We/p14a0q/fJ5/fzCH:WYyB7Cw+MEtA6db4pq/BNC

Score
10/10
targetcompanyevasionransomware

Malware Config

Extracted

Path

C:\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: 2E37D4E8307A4CEB13974322 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 (3416) files with added filename extension

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

    ransomware
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 8 IoCs
  • System policy modification 1 TTPs 1 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\b90687658fb7f9454da31634cc64b844e4121d2a359b206d00999c88a543d7ec.exe
    "C:\Users\Admin\AppData\Local\Temp\b90687658fb7f9454da31634cc64b844e4121d2a359b206d00999c88a543d7ec.exe"
    1⤵
    • Checks computer location settings
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:4276
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit /set {current} bootstatuspolicy ignoreallfailures
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1972
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {current} bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:3676
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit /set {current} recoveryenabled no
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3376
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {current} recoveryenabled no
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:880
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1348 --field-trial-handle=2232,i,10468259530860544675,2192522633371581869,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2100

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\HOW TO BACK FILES.txt
      Filesize

      1KB

      MD5

      446cb916f201acdb682cd4e1a442e486

      SHA1

      a13d6d48cbdc6da08d711a4f0947f67d350e5f9f

      SHA256

      0177809ac3b79f4a8d3428ff40885c1d4c32286c98fbe956a962ad883aa3bcd2

      SHA512

      ec029b4f5879de4939f04be012c0c6421d8ec1b6eaeb55d1cfacdb12e0f3d8d3c9667260a01e7eaae5d12ff250723097040578681fbe7ada99c4e242da572cee

      Download Submit

    • C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_x64__8wekyb3d8bbwe\microsoft.system.package.metadata\resources.ff33ee1b.pri
      Filesize

      137KB

      MD5

      cf80286eef23b9f3039c5329d5826dff

      SHA1

      aeb7019098011035915c74dcb261a21c5b2da95c

      SHA256

      c13b9b6482a7e2f23dd3cc88430cec9a68789d1db764fc7a67b44d5efaba62de

      SHA512

      d7e9d9c03989ec4db471f9517b313111c2da3d994504cc28ce05d44325226a369640bad22aff650a2d6468513127f42eab8d6f692293837214267e392def3d3c

      Download Submit