Analysis

  • max time kernel
    120s
  • max time network
    122s
  • submitted
    01-01-1970 00:00

General

  • Target

    Microsoft Edge.exe

  • Size

    218KB

  • MD5

    c6f844c748dfaa9db24483c45fcfb31f

  • SHA1

    8c3df16117b524addb56511f31df703c8ec3c172

  • SHA256

    2baa450fe71d29480b0dcf27977c156a7b3cb37f29d27f6e3fd49e2dea1abebe

  • SHA512

    d5990baeded8878005f5beb16d386454658bd29effa9657a5cc4f20056816421e01d335c22ef4bfb90f8157262dde76226ac194d2a36fe1c8f206cbcf8c38dfc

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\READ_ME.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 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops startup file 3 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) 33 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Microsoft Edge.exe
    "C:\Users\Admin\AppData\Local\Temp\Microsoft Edge.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:836
    • C:\Users\Admin\AppData\Roaming\Microsoft Edge.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft Edge.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Drops desktop.ini file(s)
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1396
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\READ_ME.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:960

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/836-55-0x00000000012F0000-0x00000000012F1000-memory.dmp

    Filesize

    4KB

  • memory/960-63-0x000007FEFBB71000-0x000007FEFBB73000-memory.dmp

    Filesize

    8KB

  • memory/1396-60-0x0000000000AA0000-0x0000000000AA1000-memory.dmp

    Filesize

    4KB

  • memory/1396-65-0x000000001AE70000-0x000000001AE72000-memory.dmp

    Filesize

    8KB