Overview

overview

10

Static

static

10

2024-01-29...ry.exe

windows7-x64

10

2024-01-29...ry.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    139s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/01/2024, 00:33

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General

  • Target
    2024-01-29_dff6ab69cff6c8a04c895a7cc692a11d_wannacry.exe
  • Size 357KB
  • Sample240129-awpxvsfehk
  • SHA256 96fcbc8fde12e9db3c1786f71895a77f59d8c42cc9598c435bd73eb82f057087
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
chaosevasionransomwarespywarestealer

Malware Config

Extracted

Path

  • C:\Users\Admin\Documents\Silent_Anon.txt

Ransom Note
  • ----> SILENTANONYMOUS ENTER YOUR SYSTEM <---- _________________________YOU ARE HACKED SUCCESSFULLY___________________ All of your files have been encrypted Your computer was infected with a ransomware virus. Your files have been encrypted 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 $1,500. 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 - hxxps://www.coinmama.com Bitpanda - hxxps://www.bitpanda.com Payment informationAmount: 0.0000766 BTC Bitcoin Address: bc1qlnzcep4l4ac0ttdrq7awxev9ehu465f2vpt9x0

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
  • Detects command variations typically used by ransomware 2 IoCs
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
    ransomwareevasion
  • Renames multiple (207) 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
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 3 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
  • Drops desktop.ini file(s) 34 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 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 49 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\2024-01-29_dff6ab69cff6c8a04c895a7cc692a11d_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-29_dff6ab69cff6c8a04c895a7cc692a11d_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4564
    • C:\Users\Admin\AppData\Roaming\darkred.exe
      "C:\Users\Admin\AppData\Roaming\darkred.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • 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:3120
      • 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:2424
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:3056
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4092
      • 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:2500
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3556
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1256
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4876
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:3788
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\Silent_Anon.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:2132
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1888
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3088
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:372
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1764

    Network

          MITRE ATT&CK Enterprise v15

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          Downloads

          darkred.exe
          • Path C:\Users\Admin\AppData\Roaming\darkred.exe
          • Size 357KB
          • SHA256 96fcbc8fde12e9db3c1786f71895a77f59d8c42cc9598c435bd73eb82f057087
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          Silent_Anon.txt
          • Path C:\Users\Admin\Documents\Silent_Anon.txt
          • Size 999B
          • SHA256 9bd9188fe4e4b9e92a36ef8997f9bcec3db4a68eccb0ad83b039a29d50ad3f9a
          • MD5 SHA1 SHA512
          Submit Download

          memory/3120-15-0x00007FFE261F0000-0x00007FFE26CB1000-memory.dmp
          Download

          memory/3120-17-0x000000001BAE0000-0x000000001BAF0000-memory.dmp
          Download

          memory/3120-478-0x00007FFE261F0000-0x00007FFE26CB1000-memory.dmp
          Download

          memory/3120-479-0x000000001BAE0000-0x000000001BAF0000-memory.dmp
          Download

          memory/4564-0-0x0000000000BF0000-0x0000000000C50000-memory.dmp
          Download

          memory/4564-1-0x00007FFE261F0000-0x00007FFE26CB1000-memory.dmp
          Download

          memory/4564-14-0x00007FFE261F0000-0x00007FFE26CB1000-memory.dmp
          Download