Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-05-2024 04:05

General

  • Target

    ld.exe

  • Size

    478KB

  • MD5

    71efe7a21da183c407682261612afc0f

  • SHA1

    0f1aea2cf0c9f2de55d2b920618a5948c5e5e119

  • SHA256

    45a236e7aa80515aafb6c656c758faad6e77fb435b35bfa407aef3918212078d

  • SHA512

    3cff597dbd7f0d5ab45b04e3c3731e38626b7b082a0ede7ab9a7826921848edb3c033f640da2cb13916febf84164f7415ca9ac50c3d927f04d9b61fcadb7801c

  • SSDEEP

    6144:W0wmbI4/Z4SHvrxw6zaIST1w9wEPDasWxxsBhS37b8o6XCFyPwCMa6qnXxq/y:7zv66zaISTW9asWxxAh4IlXC4PUqBq/

Malware Config

Extracted

Path

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

Ransom Note
Hello Your data has been stolen and encrypted We will delete the stolen data and help with the recovery of encrypted files after payment has been made Do not try to change or restore files yourself, this will break them We provide free decryption for any 3 files up to 3MB in size on our website How to contact with us: 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: 9E36178C73E0D4F786C70DF3 5) You will see chat, payment information and we can make free test decryption here Our blog of leaked companies: wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion �
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 (6537) files with added filename extension

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

  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ld.exe
    "C:\Users\Admin\AppData\Local\Temp\ld.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:3416
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit /set {current} bootstatuspolicy ignoreallfailures
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4776
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {current} bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:436
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit /set {current} recoveryenabled no
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5088
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {current} recoveryenabled no
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:4340

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files\WindowsApps\Microsoft.YourPhone_0.19051.7.0_x64__8wekyb3d8bbwe\microsoft.system.package.metadata\resources.efe979fc.pri

    Filesize

    6KB

    MD5

    b0d0928637acc40e07d77d231c66338a

    SHA1

    ffa6333a37cbe25bf1e7640388e41115328e6323

    SHA256

    e23d472f2fdfd9fa118c41be5b1b105c2bbe03ade76e7ef359484dc6145f39a6

    SHA512

    f610b128fb466d52eb9c78c9d29f7a86ede4d71528a8978be9ff8dbbd12c1c770953afa8c242a209ad0c45b86c43d2c1b9f18e60fac0f726511a22fe0b3b19ac

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\NCVVYLW7\0OMTW8SA.txt

    Filesize

    14B

    MD5

    1207bc197a1ebd72a77f1a771cad9e52

    SHA1

    8ed121ff66d407150d7390b9276fe690dd213b27

    SHA256

    260658b9cb063d6ce96f681b18704e02fae7bf8fc995fc249ab0be1400983476

    SHA512

    d037cfa3b6e6ced9652b2c781bb54cf48dbaa0aaff05039ae4fd0122749eda472807d4198981aa6ceffeba6d2b23d7ad08d7d96983dbd8539cf6b07e46e157f4

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

    Filesize

    910B

    MD5

    3ec8e410c6b7a0bc82ce3fa3be737f29

    SHA1

    d1b0a5b899da34ade990da9f41ed7a45b15c7586

    SHA256

    bb83c6a4088158ed35695afac1f269926f4fc2b7d2df31cc2d20203b07542388

    SHA512

    69649f6a2dce35760eef54d1f9a75acc8eff9b7f57679fd26182577069b82b7dedd547ef8408870a805690a7428e6a81eef631ac4c1836ee6a943ac05187f802