Overview

overview

10

Static

static

10

chat.exe

windows10-ltsc 2021-x64

10

Resubmissions

30-01-2025 03:04

250130-dkkesawjdk 10

30-01-2025 01:27

250130-bvjj5atmbk 10

30-01-2025 01:11

250130-bj2assvkbw 10

Analysis

  • max time kernel
    40s
  • max time network
    37s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20250128-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20250128-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    30-01-2025 01:11

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General

  • Target

    chat.exe

  • Size

    27KB

  • MD5

    bb45c811961c699e90d80cc770fd828b

  • SHA1

    bab510ce8e9413bfcb907964e7f29c6f0af740ac

  • SHA256

    e5c6c05c353d24bb71d61de48ec945c4284df2ac6aabd751405b7f9349973bab

  • SHA512

    2f5c64b96ad289d38b498d949c2d7d89006d4c19a61efd53fdda48342817febdd1b1ffdf6f53d99296101d88a3d669bc9d3fef5017eb4254c759148eb410cd6b

  • SSDEEP

    384:+tWZPzzxAm1vS5ZooqGhvLKe2cIS2NirglyOy5o91XOkHpg82vO:j7zxAmOS/Gee2VSSifho9pOkHq822

Score
10/10
chaosdefense_evasionevasionexecutionimpactpersistenceransomwarespywarestealer

Malware Config

Extracted

Path

C:\Users\Default\read_it.txt

Ransom Note
Don't worry, you can return all your files! All your files like documents, photos, databases and other important are encrypted What guarantees do we give to you? You can send 3 of your encrypted files and we decrypt it for free. You must follow these steps To decrypt your files : 1) Write on our e-mail :[email protected] ( In case of no answer in 24 hours check your spam folder or write us to this e-mail: [email protected]) 2) Obtain Bitcoin (You have to pay for decryption in Bitcoins. After payment we will send you the tool that will decrypt all your files.)

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

    ransomwarechaos
  • Chaos Ransomware 2 IoCs
  • Chaos family
    chaos
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • 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
  • Disables Task Manager via registry modification
    defense_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 3 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) 63 IoCs
  • 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 3 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 44 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\chat.exe
    "C:\Users\Admin\AppData\Local\Temp\chat.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1380
    • 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)
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:816
      • 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:4452
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:4240
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:856
      • 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:2676
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3324
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1044
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4800
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:1220
      • 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:3428
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3108
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4788
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:4344
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2248
    • C:\Windows\system32\taskmgr.exe
      "C:\Windows\system32\taskmgr.exe" /4
      1⤵
        PID:2592

      Network

      MITRE ATT&CK Enterprise v15

      Reconnaissance

      Resource Development

      Initial Access

      Execution

      Command and Scripting Interpreter

      1
      T1059

      Windows Management Instrumentation

      1
      T1047

      Persistence

      Boot or Logon Autostart Execution

      1
      T1547

      Registry Run Keys / Startup Folder

      1
      T1547.001

      Privilege Escalation

      Boot or Logon Autostart Execution

      1
      T1547

      Registry Run Keys / Startup Folder

      1
      T1547.001

      Defense Evasion

      Direct Volume Access

      1
      T1006

      Indicator Removal

      3
      T1070

      File Deletion

      3
      T1070.004

      Modify Registry

      1
      T1112

      Credential Access

      Credentials from Password Stores

      1
      T1555

      Credentials from Web Browsers

      1
      T1555.003

      Unsecured Credentials

      1
      T1552

      Credentials In Files

      1
      T1552.001

      Discovery

      Peripheral Device Discovery

      1
      T1120

      Query Registry

      3
      T1012

      System Information Discovery

      3
      T1082

      Lateral Movement

      Collection

      Data from Local System

      1
      T1005

      Command and Control

      Exfiltration

      Impact

      Inhibit System Recovery

      4
      T1490

      Replay Monitor

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      Downloads

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

        1KB

        MD5

        b08c36ce99a5ed11891ef6fc6d8647e9

        SHA1

        db95af417857221948eb1882e60f98ab2914bf1d

        SHA256

        cc9248a177495f45ec70b86c34fc5746c56730af36ace98ac7eb365dbafda674

        SHA512

        07e62581eace395b0a9699d727761648103180c21155d84ea09140f9e1c9690705c419118545aa67a564334bbde32710225fe3aa92b0b4b4210cb91f0058b1ea

        Download Submit

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

        27KB

        MD5

        bb45c811961c699e90d80cc770fd828b

        SHA1

        bab510ce8e9413bfcb907964e7f29c6f0af740ac

        SHA256

        e5c6c05c353d24bb71d61de48ec945c4284df2ac6aabd751405b7f9349973bab

        SHA512

        2f5c64b96ad289d38b498d949c2d7d89006d4c19a61efd53fdda48342817febdd1b1ffdf6f53d99296101d88a3d669bc9d3fef5017eb4254c759148eb410cd6b

        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

      • C:\Users\Default\read_it.txt
        Filesize

        582B

        MD5

        ed5cc52876db869de48a4783069c2a5e

        SHA1

        a9d51ceaeff715ace430f9462ab2ee4e7f33e70e

        SHA256

        45726f2f29967ef016f8d556fb6468a577307d67388cc4530295a9ca10fdfa36

        SHA512

        1745aefb9b4db4cdd7c08ee3a7d133db08f35a336fd18b598211519b481ef25ac84a3e8a3da3db06caef9f531288d1cf0ca8d4b2560637945e7953e8b45421f5

        Download Submit

      • memory/816-19-0x00007FFE40620000-0x00007FFE410E2000-memory.dmp

        Filesize

        10.8MB

        Download

      • memory/816-1304-0x00007FFE40620000-0x00007FFE410E2000-memory.dmp

        Filesize

        10.8MB

        Download

      • memory/1380-0-0x00007FFE40623000-0x00007FFE40625000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1380-1-0x00000000001C0000-0x00000000001CE000-memory.dmp

        Filesize

        56KB

        Download

      • memory/1380-2-0x00007FFE40620000-0x00007FFE410E2000-memory.dmp

        Filesize

        10.8MB

        Download

      • memory/1380-18-0x00007FFE40620000-0x00007FFE410E2000-memory.dmp

        Filesize

        10.8MB

        Download