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Overview

overview

10

Static

static

10

Chaos Rans...v4.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    67s
  • max time network
    11s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240730-en
  • resource tags

    arch:x64arch:x86image:win11-20240730-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    31/07/2024, 08:31

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General

  • Target

    Chaos Ransomware Builder v4.exe

  • Size

    550KB

  • MD5

    8b855e56e41a6e10d28522a20c1e0341

  • SHA1

    17ea75272cfe3749c6727388fd444d2c970f9d01

  • SHA256

    f2665f89ba53abd3deb81988c0d5194992214053e77fc89b98b64a31a7504d77

  • SHA512

    eefab442b9c1be379e00c6a7de9d6d7d327ad8fd52d62a5744e104f6caa44f7147a8e74f340870f9c017980a3d8a5a86a05f76434539c01270c442a66b2af908

  • SSDEEP

    3072:9UJAYdi2YcRVm16Pn6tpzqJG/sX9i2YcRPm16Pn6ckCjSH5EyR9aKZt18rTu+i2S:9aiWm162qJEsNiym16ryAiym168

Score
10/10
chaosransomwarespywarestealer

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\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.

    ransomwarechaos
  • Chaos Ransomware 4 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.

    spywarestealer
  • Drops desktop.ini file(s) 34 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 59 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 58 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe
    "C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe"
    1⤵
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1104
    • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\vh0kpfl5\vh0kpfl5.cmdline"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3956
      • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
        C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES606.tmp" "c:\Users\Admin\Downloads\CSCAA154D0B3E27476CA1561C87A48E64C6.TMP"
        3⤵
          PID:3464
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:2892
      • C:\Users\Admin\Downloads\st.exe
        "C:\Users\Admin\Downloads\st.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2124
        • 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)
          • Modifies registry class
          • Suspicious behavior: AddClipboardFormatListener
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3532
          • 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:572
      • C:\Program Files\VideoLAN\VLC\vlc.exe
        "C:\Program Files\VideoLAN\VLC\vlc.exe"
        1⤵
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        PID:5036

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\RES606.tmp
        Filesize

        1KB

        MD5

        f070136cfddd7777b08f8c20ecd3af74

        SHA1

        5d67935b9fa6f42b9a345608c81022c9dd269990

        SHA256

        549cbe9e8f27fdb2d65d3c53872ddcd6f4277ba1230c1f9e7dae7b0767ff5f5a

        SHA512

        d62fe98ff750e9ee4a006bcac984359481426eb1d3fd9105944e8f83c38f85462f1d819d868f25895b9e961a2272c4c3e8408406f20a68d2199723cdff390cf0

        Download Submit

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

        964B

        MD5

        4217b8b83ce3c3f70029a056546f8fd0

        SHA1

        487cdb5733d073a0427418888e8f7070fe782a03

        SHA256

        7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

        SHA512

        2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

        Download Submit

      • C:\Users\Admin\Downloads\st.exe
        Filesize

        22KB

        MD5

        63cef9cf4d2cb6ac3522c206d32ddfd2

        SHA1

        70acdf2e83852518c3181f4078d6bff1107c3d54

        SHA256

        1ea4cf5051176042b20df46de836340c241759347f53b9a5b067ea11ec809465

        SHA512

        5a24b0ee1840a54b13163ed2241f25e41bd3124b0f2c96820565d4bcc409d651f57ca7c0183ec6cc35b227078c370d7d00c07848e4c9cc6e0de5e21c4b21a04c

        Download Submit

      • \??\c:\Users\Admin\AppData\Local\Temp\vh0kpfl5\vh0kpfl5.0.cs
        Filesize

        30KB

        MD5

        0a3503a3e039d45a8ca2c54fc21529b1

        SHA1

        a0182ebcb423258e010d9c6be52f0de1adb212d4

        SHA256

        2e90be1ba090dc11a7ed62b2bb0895be89e9bb94876003034fb3e040921b28c0

        SHA512

        bede9d01405bb89b805398cd80921fcd2608ad76d6d264883b9a7311b3e9f62ced75f9ddd575b3eea180b4b8a43bf18a299a7026ff6466924b56576eb6450559

        Download Submit

      • \??\c:\Users\Admin\AppData\Local\Temp\vh0kpfl5\vh0kpfl5.cmdline
        Filesize

        330B

        MD5

        7eeead6bd34d18a4233c01539e3cc668

        SHA1

        b3ae6827bad4cb6bfa5276809a3ed372cdf259f6

        SHA256

        fb012dbabcf8fc87d0203ae67587c944a0a0d53e6302a48e0f90e3ac7b02c358

        SHA512

        1e9be6e37e986d861cc06562b123e02fa54baace404f84ca7893cc625294f9d5dcae1fb471cefc8943330e8f6eb7a1f60f690c8cf973bba7a2b96ef234e5ea66

        Download Submit

      • \??\c:\Users\Admin\Downloads\CSCAA154D0B3E27476CA1561C87A48E64C6.TMP
        Filesize

        1KB

        MD5

        2f582f5bd11ac3fae43d46b9314c7141

        SHA1

        805361df6add9a47307590dd37dfb7b2d1f7118f

        SHA256

        850db1be22b7b1c73fc7042d2fde482ab5090cdf491c898517e18187e1b9b920

        SHA512

        f1ccc2b6be453d3b1510ddefd58f136a2690ab874383ea15792e5f5ce847ec0d9afe61bbd624dad20d05cba55e9f6d2a0d820ed41ad5cf411b7bb2c1b227a0c9

        Download Submit

      • memory/1104-6-0x00007FFD285D0000-0x00007FFD29092000-memory.dmp

        Filesize

        10.8MB

        Download

      • memory/1104-0-0x00007FFD285D3000-0x00007FFD285D5000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1104-5-0x00007FFD285D0000-0x00007FFD29092000-memory.dmp

        Filesize

        10.8MB

        Download

      • memory/1104-4-0x00007FFD285D0000-0x00007FFD29092000-memory.dmp

        Filesize

        10.8MB

        Download

      • memory/1104-3-0x00007FFD285D0000-0x00007FFD29092000-memory.dmp

        Filesize

        10.8MB

        Download

      • memory/1104-19-0x00007FFD285D0000-0x00007FFD29092000-memory.dmp

        Filesize

        10.8MB

        Download

      • memory/1104-2-0x00007FFD285D0000-0x00007FFD29092000-memory.dmp

        Filesize

        10.8MB

        Download

      • memory/1104-1-0x00000000000D0000-0x000000000015E000-memory.dmp

        Filesize

        568KB

        Download

      • memory/2124-22-0x0000000000A00000-0x0000000000A0C000-memory.dmp

        Filesize

        48KB

        Download

      • memory/5036-95-0x00007FF670CF0000-0x00007FF670DE8000-memory.dmp

        Filesize

        992KB

        Download

      • memory/5036-96-0x00007FFD23090000-0x00007FFD230C4000-memory.dmp

        Filesize

        208KB

        Download

      • memory/5036-101-0x00007FFD39980000-0x00007FFD39997000-memory.dmp

        Filesize

        92KB

        Download

      • memory/5036-103-0x00007FFD33D90000-0x00007FFD33DA1000-memory.dmp

        Filesize

        68KB

        Download

      • memory/5036-102-0x00007FFD39920000-0x00007FFD3993D000-memory.dmp

        Filesize

        116KB

        Download

      • memory/5036-97-0x00007FFD227E0000-0x00007FFD22A96000-memory.dmp

        Filesize

        2.7MB

        Download

      • memory/5036-99-0x00007FFD3AB10000-0x00007FFD3AB27000-memory.dmp

        Filesize

        92KB

        Download

      • memory/5036-98-0x00007FFD3E0F0000-0x00007FFD3E108000-memory.dmp

        Filesize

        96KB

        Download

      • memory/5036-100-0x00007FFD3A7E0000-0x00007FFD3A7F1000-memory.dmp

        Filesize

        68KB

        Download

      • memory/5036-105-0x00007FFD22730000-0x00007FFD22797000-memory.dmp

        Filesize

        412KB

        Download

      • memory/5036-104-0x00007FFD1DDE0000-0x00007FFD1EE90000-memory.dmp

        Filesize

        16.7MB

        Download