Overview

overview

10

Static

static

10

378048eb77...b7.exe

windows7-x64

10

378048eb77...b7.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    55s
  • max time network
    54s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-04-2024 14:46

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General

  • Target

    378048eb77eec0197bedba1659883e06d43fb6b0c8bf312f9a7ef90d115022b7.exe

  • Size

    876KB

  • MD5

    5668c99abad5da137b901ea5e024638f

  • SHA1

    4718b08ab5f28437c972f030d23bd2a6535224a7

  • SHA256

    378048eb77eec0197bedba1659883e06d43fb6b0c8bf312f9a7ef90d115022b7

  • SHA512

    a700b70e24aaae69c68d0f9e74c5302dd821c62b165a85b383be5db9e281df558895e985ce51a2e1873306292105904d0e59b12daec1d26dcc5976e237ee9fc6

  • SSDEEP

    12288:+nRqNW1UnNLCl3VwiMR9q9E8NB92AyE+5Qyo1oA+1Db5i6N28Hnn9znQ/8MAj9x:NW1BVVEJuOv

Score
10/10
chaosevasionpersistenceransomwarespywarestealer

Malware Config

Extracted

Path

C:\ProgramData\Adobe\Setup\{AC76BA86-7AD7-1033-7B44-AC0F074E4100}\SOLUTION_NOTE.txt

Ransom Note
Oh, what an exquisite predicament has befallen you! We take immense pleasure in informing you, without the slightest pang of regret that your server security has been breached & immortalized by LETHAL LOCK, a majestic entity in the realm of cyber command. Marvel at the masterpiece of encryption we have orchestrated, utilizing algorithms of such complexity and military-grade standards that they render your critical documents as elusive as a mirage in the desert. Your files now dance to the tune of an encryption algorithm so intricate, so enigmatic, that mortals tremble at its sight. Should you dare to defy our demands, be prepared for the consequences — your data will remain locked away forever and we will sell them to a third party on the Dark Web or use them as a trade by barter on the Dark-Web to get higher upgraded tools to dismantle your organization within a twinkle of an eye. Any futile attempts to decipher this cryptographic masterpiece, appeal to law enforcement, or seek assistance from less reputable cybersecurity entities will only hasten the irreversible disappearance of your confidential datas and the swift deletion of the decryption key. Your enduring rule, should you choose to accept it, is to comply with our ransom payment demands within 72 hours (3days). Failure to meet this demand will result in the permanent loss of your decryption key, accompanied by a symphony of data obfuscation maneuvers that thwart even the most valiant attempts at file recovery. To embark on this momentous path of payment and data liberation: 1) Reach out to our esteemed customer support service on Telegram: @lethallock (For those evading payment, we suggest enjoying a hot cup of coffee while witnessing the swift datas/files wipe out orchestrated by the Lethal Lock algorithms). 2) Acquire and transfer 25 bitcoins with express efficiency. Remember, our treasuries crave bitcoins, and in return, we will provide you with the coveted decryption key that unlocks the chest of digital wealth. Follow these crucial instructions: 1) Keep your computer powered on and connected to the digital world. 2) Resist all temptations to use data recovery tools without our permission. 3) Execute the bitcoin transfer with surgical precision before the time extinguish your chance for redemption. In your cryptographic triumph, Van Dmitry Vladimir Senior Director of Operations Lethal Lock Tech Company - LLTC

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

    ransomwarechaos
  • Chaos Ransomware 2 IoCs
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
    ransomwareevasion
  • Renames multiple (160) files with added filename extension

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

    ransomware
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

    ransomware
  • Disables Task Manager via registry modification
    evasion
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Drops desktop.ini file(s) 64 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
    ransomware
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 45 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\378048eb77eec0197bedba1659883e06d43fb6b0c8bf312f9a7ef90d115022b7.exe
    "C:\Users\Admin\AppData\Local\Temp\378048eb77eec0197bedba1659883e06d43fb6b0c8bf312f9a7ef90d115022b7.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2784
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops desktop.ini file(s)
      • Sets desktop wallpaper using registry
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3756
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2144
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2812
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2340
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2604
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:668
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4652
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3368
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:4512
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\SOLUTION_NOTE.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:2000
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4780
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4504
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:856
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4536

    Network

    MITRE ATT&CK Enterprise v15

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    Downloads

    • C:\ProgramData\Adobe\Setup\{AC76BA86-7AD7-1033-7B44-AC0F074E4100}\SOLUTION_NOTE.txt
      Filesize

      2KB

      MD5

      422c304e6cccb39e8a876d7eccc3cf1b

      SHA1

      29a656099c4439855679c90ae2e69f5fbdfe9c1d

      SHA256

      f6e57820707eb0d307c2dfafba94bf977c33f182e7c3377d9ab3f4662054e92a

      SHA512

      5322504ade08540e89839e4b32091cea7d172b537e121f62291a95560bb6c06fab7e12ee7ed149f29e3c5bbeab7a72c419ea5241cc6aeba027d93e470145331b

      Download Submit

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\378048eb77eec0197bedba1659883e06d43fb6b0c8bf312f9a7ef90d115022b7.exe.log
      Filesize

      1KB

      MD5

      baf55b95da4a601229647f25dad12878

      SHA1

      abc16954ebfd213733c4493fc1910164d825cac8

      SHA256

      ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924

      SHA512

      24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

      Download Submit

    • C:\Users\Admin\AppData\Roaming\svchost.exe
      Filesize

      876KB

      MD5

      5668c99abad5da137b901ea5e024638f

      SHA1

      4718b08ab5f28437c972f030d23bd2a6535224a7

      SHA256

      378048eb77eec0197bedba1659883e06d43fb6b0c8bf312f9a7ef90d115022b7

      SHA512

      a700b70e24aaae69c68d0f9e74c5302dd821c62b165a85b383be5db9e281df558895e985ce51a2e1873306292105904d0e59b12daec1d26dcc5976e237ee9fc6

      Download Submit

    • C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\Magnify.lnk
      Filesize

      1B

      MD5

      d1457b72c3fb323a2671125aef3eab5d

      SHA1

      5bab61eb53176449e25c2c82f172b82cb13ffb9d

      SHA256

      8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

      SHA512

      ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

      Download Submit

    • memory/2784-0-0x0000000000AC0000-0x0000000000BA0000-memory.dmp

      Filesize

      896KB

      Download

    • memory/2784-2-0x000000001B7A0000-0x000000001B7B0000-memory.dmp

      Filesize

      64KB

      Download

    • memory/2784-1-0x00007FFA5FB20000-0x00007FFA605E1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/2784-16-0x00007FFA5FB20000-0x00007FFA605E1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/3756-15-0x00007FFA5FB20000-0x00007FFA605E1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/3756-1123-0x00007FFA5FB20000-0x00007FFA605E1000-memory.dmp

      Filesize

      10.8MB

      Download