Resubmissions

27/11/2024, 13:29

241127-qrb37svpcv10

27/11/2024, 09:27

241127-le54astrfj10

Analysis

  • max time kernel
    718s
  • max time network
    725s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    27/11/2024, 09:27

General

  • Target
    f13edd0b86c095dfb681e8bf08d7df0d53d9fb4301f2ba65ae9706a0aaeefe9f.exe
  • Size 188KB
  • Sample241127-le54astrfj
  • SHA256 f13edd0b86c095dfb681e8bf08d7df0d53d9fb4301f2ba65ae9706a0aaeefe9f
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Path
  • C:\Users\Admin\Documents\read_it.txt

Ransom Note
  • Warlocks Dark Army Hacker Group Ransomware All of your files have been encrypted Your computer was infected with a ransomware virus. Your files have been encrypted by AES-256 Military Algorithm and you won't be able to decrypt them without our help. What can I do to get my files back? You can buy our special decryption software, this software will allow you to recover all of your data and remove the ransomware from your computer. The price for the software is $200. Payment can be made in Bitcoin only. How do I pay, where do I get Bitcoin? Purchasing Bitcoin varies from country to country, you are best advised to do a quick google search yourself to find out how to buy Bitcoin. Many of our customers have reported these sites to be fast and reliable: Coinmama - https://www.coinmama.com Bitpanda - https://www.bitpanda.com Payment information. Amount: $200 worth Bitcoin Bitcoin Address: 3JMn7im6xZeLodtqqEBgTsUUvBQeUwszdb Once payment is done, Please contact @CattyLola or @WARLOCK_MAK to get your decryption software, private key and instrutions to decrypt your computer.
Wallets
  • 3JMn7im6xZeLodtqqEBgTsUUvBQeUwszdb

URLs
  • https://www.coinmama.com

  • https://www.bitpanda.com

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 3 IoCs
  • Chaos family
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • Renames multiple (91) files with added filename extension

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

  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Drops startup file 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops desktop.ini file(s) 14 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 3 TTPs 1 IoCs

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

  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of WriteProcessMemory 30 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.

  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\f13edd0b86c095dfb681e8bf08d7df0d53d9fb4301f2ba65ae9706a0aaeefe9f.exe
    "C:\Users\Admin\AppData\Local\Temp\f13edd0b86c095dfb681e8bf08d7df0d53d9fb4301f2ba65ae9706a0aaeefe9f.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2240
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2276
      • 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:1064
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:584
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:952
      • 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:2824
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1144
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2324
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2128
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:2208
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:2984
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2228
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2572
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:1588
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:2212

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            svchost.exe

            • Path C:\Users\Admin\AppData\Roaming\svchost.exe
            • Size 188KB
            • SHA256 f13edd0b86c095dfb681e8bf08d7df0d53d9fb4301f2ba65ae9706a0aaeefe9f
            • MD5 SHA1 SHA512 SSDEEP

            read_it.txt

            • Path C:\Users\Admin\Documents\read_it.txt
            • Size 1KB
            • SHA256 38ec1adcdf0fc695fa3f120f179cb07b9da982f376bd3474f9c012cfd3d4776c
            • MD5 SHA1 SHA512

            memory/2240-0-0x000007FEF6423000-0x000007FEF6424000-memory.dmp

            memory/2240-1-0x00000000009A0000-0x00000000009D4000-memory.dmp

            memory/2276-7-0x00000000001E0000-0x0000000000214000-memory.dmp

            memory/2276-9-0x000007FEF6420000-0x000007FEF6E0C000-memory.dmp

            memory/2276-13-0x000007FEF6420000-0x000007FEF6E0C000-memory.dmp

            memory/2276-207-0x000007FEF6420000-0x000007FEF6E0C000-memory.dmp