Analysis

  • max time kernel
    122s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    28/01/2024, 22:33

General

  • Target

    2ad95951fc61f1e05dfd7a0cf8ff557310be64e5d4f41143a3d84db8b88b47fd.exe

  • Size

    26KB

  • MD5

    6759cca36eeda3e673ffc0deadecac91

  • SHA1

    45c5621360dc8b09f58cadbcb319207ca1662840

  • SHA256

    4e77025ae6ebfdd85cb8cddee3829b5b92e8a09fc9c37a98023db016470c0d5f

  • SHA512

    92d48e5f256f9e1adb131244a9a7e8aff684f732fc99a36b874869b52686d9c201b33c6c1903190348898e63a46d2bba6a54661f695f6604ebddaaf379b34649

  • SSDEEP

    384:qYenjLLAps4T5lBavzb/xlhKOVp91Qub5hxDG4:5OElB6sc9GubXxDj

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\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 3 IoCs
  • Detects command variations typically used by ransomware 3 IoCs
  • Renames multiple (179) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • 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
  • Enumerates physical storage devices 1 TTPs

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

  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2ad95951fc61f1e05dfd7a0cf8ff557310be64e5d4f41143a3d84db8b88b47fd.exe
    "C:\Users\Admin\AppData\Local\Temp\2ad95951fc61f1e05dfd7a0cf8ff557310be64e5d4f41143a3d84db8b88b47fd.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2408
    • 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)
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2092
      • 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:528

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    964B

    MD5

    4217b8b83ce3c3f70029a056546f8fd0

    SHA1

    487cdb5733d073a0427418888e8f7070fe782a03

    SHA256

    7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

    SHA512

    2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

  • C:\Users\Admin\AppData\Roaming\SaveRead.jpeg

    Filesize

    1B

    MD5

    d1457b72c3fb323a2671125aef3eab5d

    SHA1

    5bab61eb53176449e25c2c82f172b82cb13ffb9d

    SHA256

    8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

    SHA512

    ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

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

    Filesize

    26KB

    MD5

    6759cca36eeda3e673ffc0deadecac91

    SHA1

    45c5621360dc8b09f58cadbcb319207ca1662840

    SHA256

    4e77025ae6ebfdd85cb8cddee3829b5b92e8a09fc9c37a98023db016470c0d5f

    SHA512

    92d48e5f256f9e1adb131244a9a7e8aff684f732fc99a36b874869b52686d9c201b33c6c1903190348898e63a46d2bba6a54661f695f6604ebddaaf379b34649

  • memory/2092-7-0x0000000000FA0000-0x0000000000FAC000-memory.dmp

    Filesize

    48KB

  • memory/2092-9-0x000007FEF6280000-0x000007FEF6C6C000-memory.dmp

    Filesize

    9.9MB

  • memory/2092-59-0x0000000000C90000-0x0000000000D10000-memory.dmp

    Filesize

    512KB

  • memory/2092-904-0x000007FEF6280000-0x000007FEF6C6C000-memory.dmp

    Filesize

    9.9MB

  • memory/2092-905-0x0000000000C90000-0x0000000000D10000-memory.dmp

    Filesize

    512KB

  • memory/2408-0-0x0000000000930000-0x000000000093C000-memory.dmp

    Filesize

    48KB

  • memory/2408-1-0x000007FEF6280000-0x000007FEF6C6C000-memory.dmp

    Filesize

    9.9MB

  • memory/2408-8-0x000007FEF6280000-0x000007FEF6C6C000-memory.dmp

    Filesize

    9.9MB