Analysis

  • max time kernel
    145s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-02-2024 05:26

General

  • Target

    2024-02-27_0759f66f402127a025511f3d7182297f_chaos_destroyer_wannacry.exe

  • Size

    26KB

  • MD5

    0759f66f402127a025511f3d7182297f

  • SHA1

    63ef9780261370b837fe73de3378d16dca77e2fa

  • SHA256

    9927f94571f7ecb01c93fec3ef563e5431861646df71cb41f97512fb6effa2d2

  • SHA512

    ab7d6a5fb2a563060c085f10ff0ec0dfcb08e4679b14dca47319fe0f1b487061e8b47579da40c0322b315a1ea331172e7da31617bcb56d78cff2e766ce248420

  • SSDEEP

    384:qYenjLLAps4T5lBavzb/xlhKOVp91Qnb5hxDGr:5OElB6sc9GnbXxDA

Malware Config

Extracted

Path

C:\Users\Admin\3D Objects\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 2 IoCs
  • Detects command variations typically used by ransomware 2 IoCs
  • Renames multiple (162) files with added filename extension

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

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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).

  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 43 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-27_0759f66f402127a025511f3d7182297f_chaos_destroyer_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-27_0759f66f402127a025511f3d7182297f_chaos_destroyer_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:440
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Checks computer location settings
      • 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:224
      • 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:4636
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3376 --field-trial-handle=2292,i,2103142837140538807,15881446839139365070,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4216

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\3D Objects\read_it.txt

      Filesize

      964B

      MD5

      4217b8b83ce3c3f70029a056546f8fd0

      SHA1

      487cdb5733d073a0427418888e8f7070fe782a03

      SHA256

      7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

      SHA512

      2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\2024-02-27_0759f66f402127a025511f3d7182297f_chaos_destroyer_wannacry.exe.log

      Filesize

      226B

      MD5

      28d7fcc2b910da5e67ebb99451a5f598

      SHA1

      a5bf77a53eda1208f4f37d09d82da0b9915a6747

      SHA256

      2391511d0a66ed9f84ae54254f51c09e43be01ad685db80da3201ec880abd49c

      SHA512

      2d8eb65cbf04ca506f4ef3b9ae13ccf05ebefab702269ba70ffd1ce9e6c615db0a3ee3ac0e81a06f546fc3250b7b76155dd51241c41b507a441b658c8e761df6

    • C:\Users\Admin\AppData\Roaming\ExitUnpublish.docx

      Filesize

      1B

      MD5

      d1457b72c3fb323a2671125aef3eab5d

      SHA1

      5bab61eb53176449e25c2c82f172b82cb13ffb9d

      SHA256

      8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

      SHA512

      ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

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

      Filesize

      26KB

      MD5

      0759f66f402127a025511f3d7182297f

      SHA1

      63ef9780261370b837fe73de3378d16dca77e2fa

      SHA256

      9927f94571f7ecb01c93fec3ef563e5431861646df71cb41f97512fb6effa2d2

      SHA512

      ab7d6a5fb2a563060c085f10ff0ec0dfcb08e4679b14dca47319fe0f1b487061e8b47579da40c0322b315a1ea331172e7da31617bcb56d78cff2e766ce248420

    • memory/224-15-0x00007FFE93C20000-0x00007FFE946E1000-memory.dmp

      Filesize

      10.8MB

    • memory/224-1067-0x00007FFE93C20000-0x00007FFE946E1000-memory.dmp

      Filesize

      10.8MB

    • memory/440-0-0x0000000000010000-0x000000000001C000-memory.dmp

      Filesize

      48KB

    • memory/440-1-0x00007FFE93C20000-0x00007FFE946E1000-memory.dmp

      Filesize

      10.8MB

    • memory/440-14-0x00007FFE93C20000-0x00007FFE946E1000-memory.dmp

      Filesize

      10.8MB