Analysis

  • max time kernel
    117s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    23-04-2024 09:32

General

  • Target

    2024-04-23_fa2bc41c30b3a2941d80fc425fc2a77c_wannacry.exe

  • Size

    279KB

  • MD5

    fa2bc41c30b3a2941d80fc425fc2a77c

  • SHA1

    5691f15157cbc09cab0c8060fda383b10a5d08d4

  • SHA256

    7aa856f4de63761e009aab09314a53181fece93c83d683f34144cc5a5d3f5745

  • SHA512

    66cd14cdbeb7b112f7c976bae986c9cbe95bfc40a79233d6a6fe98bd2084ff43cdab9a3b0d02c2ad3b6ae0c24540c106e75f59805680c81a37858b0c34a8157b

  • SSDEEP

    3072:bN3/0c9VyUSG0jZ6Km+q9aYZBDn/wxCotkzHzvnOlo+lDLcRkchuJItSNVdWand:Bcc9kxjUlauIhoa4jpt

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\read_it.txt

Ransom Note
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 $5000. 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: 0.077 BTC Bitcoin Address: bc1qdzwmcv9m0uz9c5s7jcvd2y3hjgd68xyc7sgtlm When paid send Screenshot , Download Tox and message us using this Tox ID Tox Id: EB022AB3ACEAC60B82E9ADE0C2590D6D7753EFB8BFE272F074E2ACB18E5F3D1FCE1E844E3FD7 When Confirmed we send you the Decryptor.

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 3 IoCs
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Detects command variations typically used by ransomware 3 IoCs
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Disables Task Manager via registry modification
  • 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.

  • Drops desktop.ini file(s) 64 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 2 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 6 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\2024-04-23_fa2bc41c30b3a2941d80fc425fc2a77c_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-23_fa2bc41c30b3a2941d80fc425fc2a77c_wannacry.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2168
    • 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)
      • Sets desktop wallpaper using registry
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2508
      • 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:2612
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2632
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:3048
      • 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:2840
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2940
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2956
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2992
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:2752
      • 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:2136
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2548
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1808
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:2388
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:2592

      Network

      MITRE ATT&CK Matrix ATT&CK v13

      Execution

      Command and Scripting Interpreter

      1
      T1059

      Defense Evasion

      Indicator Removal

      3
      T1070

      File Deletion

      3
      T1070.004

      Modify Registry

      1
      T1112

      Credential Access

      Unsecured Credentials

      1
      T1552

      Credentials In Files

      1
      T1552.001

      Discovery

      System Information Discovery

      1
      T1082

      Query Registry

      1
      T1012

      Collection

      Data from Local System

      1
      T1005

      Impact

      Inhibit System Recovery

      4
      T1490

      Defacement

      1
      T1491

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\read_it.txt
        Filesize

        1KB

        MD5

        3c08014c9c865e808db93f81d9e99d42

        SHA1

        c529887dc860f5f82868001e2736bc09291d0c9b

        SHA256

        a3293c7c2918b1f33c63872f2322f2b057487739b68b5025ce8128986a06cfd1

        SHA512

        af5bbb7c6e0efbe31838334397edced832df773859a5c273335973c3d0711d909f1717bfcbf981ae12f8f0b382db1671c28c600bad8cf38032b9e2895cdaf581

      • C:\Users\Admin\AppData\Roaming\DisableMount.dwg
        Filesize

        1B

        MD5

        d1457b72c3fb323a2671125aef3eab5d

        SHA1

        5bab61eb53176449e25c2c82f172b82cb13ffb9d

        SHA256

        8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

        SHA512

        ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

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

        279KB

        MD5

        fa2bc41c30b3a2941d80fc425fc2a77c

        SHA1

        5691f15157cbc09cab0c8060fda383b10a5d08d4

        SHA256

        7aa856f4de63761e009aab09314a53181fece93c83d683f34144cc5a5d3f5745

        SHA512

        66cd14cdbeb7b112f7c976bae986c9cbe95bfc40a79233d6a6fe98bd2084ff43cdab9a3b0d02c2ad3b6ae0c24540c106e75f59805680c81a37858b0c34a8157b

      • memory/2168-0-0x00000000009C0000-0x0000000000A0C000-memory.dmp
        Filesize

        304KB

      • memory/2168-1-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp
        Filesize

        9.9MB

      • memory/2168-8-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp
        Filesize

        9.9MB

      • memory/2508-7-0x0000000000FA0000-0x0000000000FEC000-memory.dmp
        Filesize

        304KB

      • memory/2508-9-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp
        Filesize

        9.9MB

      • memory/2508-70-0x000000001AE00000-0x000000001AE80000-memory.dmp
        Filesize

        512KB

      • memory/2508-884-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp
        Filesize

        9.9MB

      • memory/2508-885-0x000000001AE00000-0x000000001AE80000-memory.dmp
        Filesize

        512KB