Analysis

  • max time kernel
    95s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    04-03-2024 17:15

General

  • Target

    speakerwoman.exe

  • Size

    169KB

  • MD5

    09cd7152db837a6b1ec65dd6bf99cce9

  • SHA1

    1591282093b637060d1f542da93ccdcf660a6b0d

  • SHA256

    d048804223a758e7a90b9a65bc452c8eb05d6fc8f5b33618f8783e6c53af2730

  • SHA512

    293fc7f42d7b4fc3ba9db1925d2d3f7d9e9e99d382fb30f46e391f9b56125142321ac121f96e2303a6f23fd64b8c4d8de5a75a9e369e6f46ea23fc2fa3a8598a

  • SSDEEP

    3072:to0YhjV4qr9UL9zOkrXf8jhObiPoT0rXCHq/mP22HaorLhopvmAosjLAkMliem1m:E5r9ULJOkrX0EvT4CHq/E2t2euVspGm

Malware Config

Extracted

Path

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

Family

chaos

Ransom Note
----> Chaos is multi language ransomware. Translate your note to any language <---- 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: 0.1473766 BTC Bitcoin Address: bc1qlnzcep4l4ac0ttdrq7awxev9ehu465f2vpt9x0

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 5 IoCs
  • Drops startup file 3 IoCs
  • Executes dropped EXE 2 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) 34 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).

  • Enumerates system info in registry 2 TTPs 32 IoCs
  • Modifies data under HKEY_USERS 9 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 26 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 20 IoCs
  • Suspicious use of FindShellTrayWindow 26 IoCs
  • Suspicious use of SendNotifyMessage 25 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\speakerwoman.exe
    "C:\Users\Admin\AppData\Local\Temp\speakerwoman.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2700
    • 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:2080
      • 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:1892
  • C:\Users\Admin\AppData\Local\Temp\ose00000.exe
    "C:\Users\Admin\AppData\Local\Temp\ose00000.exe"
    1⤵
      PID:1404
    • C:\Users\Admin\AppData\Local\Temp\speakerwoman.exe
      "C:\Users\Admin\AppData\Local\Temp\speakerwoman.exe"
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:576
      • C:\Users\Admin\AppData\Roaming\svchost.exe
        "C:\Users\Admin\AppData\Roaming\svchost.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2316
    • C:\Windows\system32\taskmgr.exe
      "C:\Windows\system32\taskmgr.exe" /4
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:964
    • C:\Windows\system32\Dwm.exe
      "C:\Windows\system32\Dwm.exe"
      1⤵
        PID:1744
      • C:\Windows\system32\csrss.exe
        %SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
        1⤵
        • Enumerates system info in registry
        • Suspicious use of WriteProcessMemory
        PID:1272
      • C:\Windows\system32\winlogon.exe
        winlogon.exe
        1⤵
        • Modifies data under HKEY_USERS
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1948
        • C:\Windows\system32\LogonUI.exe
          "LogonUI.exe" /flags:0x0
          2⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2780

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        169KB

        MD5

        09cd7152db837a6b1ec65dd6bf99cce9

        SHA1

        1591282093b637060d1f542da93ccdcf660a6b0d

        SHA256

        d048804223a758e7a90b9a65bc452c8eb05d6fc8f5b33618f8783e6c53af2730

        SHA512

        293fc7f42d7b4fc3ba9db1925d2d3f7d9e9e99d382fb30f46e391f9b56125142321ac121f96e2303a6f23fd64b8c4d8de5a75a9e369e6f46ea23fc2fa3a8598a

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

        Filesize

        964B

        MD5

        4217b8b83ce3c3f70029a056546f8fd0

        SHA1

        487cdb5733d073a0427418888e8f7070fe782a03

        SHA256

        7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

        SHA512

        2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

      • memory/576-456-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp

        Filesize

        9.9MB

      • memory/576-454-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp

        Filesize

        9.9MB

      • memory/576-453-0x0000000001160000-0x0000000001190000-memory.dmp

        Filesize

        192KB

      • memory/964-459-0x0000000140000000-0x00000001405E8000-memory.dmp

        Filesize

        5.9MB

      • memory/964-458-0x0000000140000000-0x00000001405E8000-memory.dmp

        Filesize

        5.9MB

      • memory/964-460-0x0000000000450000-0x0000000000451000-memory.dmp

        Filesize

        4KB

      • memory/2080-9-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp

        Filesize

        9.9MB

      • memory/2080-451-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp

        Filesize

        9.9MB

      • memory/2080-452-0x000000001AE60000-0x000000001AEE0000-memory.dmp

        Filesize

        512KB

      • memory/2080-461-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp

        Filesize

        9.9MB

      • memory/2080-7-0x0000000000870000-0x00000000008A0000-memory.dmp

        Filesize

        192KB

      • memory/2080-11-0x000000001AE60000-0x000000001AEE0000-memory.dmp

        Filesize

        512KB

      • memory/2316-457-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp

        Filesize

        9.9MB

      • memory/2316-463-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp

        Filesize

        9.9MB

      • memory/2700-0-0x00000000001C0000-0x00000000001F0000-memory.dmp

        Filesize

        192KB

      • memory/2700-1-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp

        Filesize

        9.9MB

      • memory/2700-8-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp

        Filesize

        9.9MB

      • memory/2780-462-0x0000000002C30000-0x0000000002C31000-memory.dmp

        Filesize

        4KB