Overview

overview

10

Static

static

10

2024-02-18...uk.exe

windows7-x64

10

2024-02-18...uk.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    139s
  • max time network
    128s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    18-02-2024 12:48

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General

  • Target

    2024-02-18_4ba6b0d4fc46d595e1b59a965a0044a4_gazer_ryuk.exe

  • Size

    6.1MB

  • MD5

    4ba6b0d4fc46d595e1b59a965a0044a4

  • SHA1

    55e5e00cac5a78d51d370b347d1982288151d553

  • SHA256

    6976ffaa2deac082dedcd30e2ecb2faa86e5361d1c22d6678baf44985ef217ce

  • SHA512

    768d350c06bac0a07b11d076bbc8164d8bd0fe48263fa7848ec13c856d6d46513754ba3f2bd87ce5717904b70a0e2efe5d7f66ef604c83286b3c6f9853f48c6f

  • SSDEEP

    98304:ilLAB1vqhIQD/u9LkqFle1Gui16ZEXiZTslVw53gcbj:is0IQq9LjFlk53gc

Score
10/10
targetcompanyevasionransomware

Malware Config

Extracted

Path

\Device\HarddiskVolume1\HOW TO RESTORE FILES.txt

Family

targetcompany

Ransom Note
Hello Your files are encrypted and can not be used 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: 850CAB577A14E160B2DBEC7F 5) You will see payment information and we can make free test decryption here 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 (7264) 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\2024-02-18_4ba6b0d4fc46d595e1b59a965a0044a4_gazer_ryuk.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-18_4ba6b0d4fc46d595e1b59a965a0044a4_gazer_ryuk.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:1436
    • 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:2272
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit /set {current} recoveryenabled no
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2892
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {current} recoveryenabled no
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2724

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Device\HarddiskVolume1\HOW TO RESTORE FILES.txt
    Filesize

    1KB

    MD5

    e398176d1a862fa43bcda9356754d82d

    SHA1

    3713bc4c5d2184979bc6728e7507ee8c01c5c894

    SHA256

    d47981855a89e9fcda7cea294dbd2429802e80ade9bcc031cf1c1a2c174f9a37

    SHA512

    b678efb15c002f5db214dfdaade99e2e9a609a93a5bacb36ff248ee209b5284942525d5bffdc39c9e9a817fad33168909c05ee6f0aa136f79a22afa6fa7b0474

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