Overview

overview

10

Static

static

10

Version 2.8.exe

windows7-x64

10

Version 2.8.exe

windows10-2004-x64

10

Resubmissions

14/03/2024, 18:52

240314-xjd16aec3710

14/03/2024, 18:50

240314-xgwhesca8s10

Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/03/2024, 18:52

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General

  • Target
    Version 2.8.exe
  • Size 223KB
  • Sample240314-xjd16aec37
  • SHA256 99b88ce97064536c370e630245018b15bf87c0c1113e2c4c95bfb7dc1078b647
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
chaosevasionransomwarespywarestealer

Malware Config

Extracted

Path

  • C:\Users\Admin\Desktop\read_it.txt

Ransom Note
  • All of your files have been encrypted! Warning Attempting to remove the software will corrupt your hard drives meaning no further use even when wiped. We simply charge $25 which is far cheaper than buying a new drive. Your computer was infected with a ransomware software. Your files have been encrypted and you won't be able to decrypt them without purchasing $25 BTC. What can I do to get my files back? You will send payment of $25 BTC to gain access to your files again, once payment is made after 3 confirmations on the blockchain (15 mins) your files will be restored and the software will un-install itself from your computer. 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 will increase soon to double, be cooperative and your files will be released. Payment information Amount: 0.000385636 BTC Bitcoin Address: bc1qc76qr24pxnms9f93mytfg4dn7ztuvmje7g43dr

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
  • 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 53 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of FindShellTrayWindow 1 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\Version 2.8.exe
    "C:\Users\Admin\AppData\Local\Temp\Version 2.8.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2264
    • 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
      • 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:3816
      • 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:3024
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:4424
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:772
      • 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:3448
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3208
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:5088
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3284
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:4872
      • 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)
        • Suspicious use of FindShellTrayWindow
        PID:2528
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4304
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2524
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:5080
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:720

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          svchost.exe
          • Path C:\Users\Admin\AppData\Roaming\svchost.exe
          • Size 223KB
          • SHA256 99b88ce97064536c370e630245018b15bf87c0c1113e2c4c95bfb7dc1078b647
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          read_it.txt
          • Path C:\Users\Admin\Desktop\read_it.txt
          • Size 1KB
          • SHA256 e4f0c335d1ffc3ed4a32ae4aee294c9652f67a765fbaaad1f90e0540d25ed565
          • MD5 SHA1 SHA512
          Submit Download

          memory/2264-0-0x0000000000390000-0x00000000003CE000-memory.dmp
          Download

          memory/2264-1-0x00007FFB777B0000-0x00007FFB78271000-memory.dmp
          Download

          memory/2264-14-0x00007FFB777B0000-0x00007FFB78271000-memory.dmp
          Download

          memory/3816-15-0x00007FFB777B0000-0x00007FFB78271000-memory.dmp
          Download

          memory/3816-69-0x00007FFB777B0000-0x00007FFB78271000-memory.dmp
          Download