General

  • Target

    ratbuildransomware.exe

  • Size

    23KB

  • Sample

    250126-m4l76a1kgm

  • MD5

    0a1c74e456d2f946369080f5a46b79c0

  • SHA1

    3a11cf17c826247034f12b63362ee597681a37ca

  • SHA256

    b6176e42f8eece315692fa7ec9a37190f1ec8353fc85a7b1042af4b06f1f489e

  • SHA512

    27133929dafc8c5abc954baa3491c603dbaa866155ebf32d25860ec0da879a024e6207767943bae36e2b8faaeac7f7a52d254b8f26e0bd17ef747c3c6d2db963

  • SSDEEP

    384:b3MLWHn3kIef/ZXRtLWW3pXHVYILpJrr91CzxbeteT:Hn3kIcpj3pXHVY0nrr9ixbYeT

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: $35 USD Bitcoin Address: bc1qau23yqew650myzt5xatzkcl2seeefjs5v9t94r

Targets

    • Target

      ratbuildransomware.exe

    • Size

      23KB

    • MD5

      0a1c74e456d2f946369080f5a46b79c0

    • SHA1

      3a11cf17c826247034f12b63362ee597681a37ca

    • SHA256

      b6176e42f8eece315692fa7ec9a37190f1ec8353fc85a7b1042af4b06f1f489e

    • SHA512

      27133929dafc8c5abc954baa3491c603dbaa866155ebf32d25860ec0da879a024e6207767943bae36e2b8faaeac7f7a52d254b8f26e0bd17ef747c3c6d2db963

    • SSDEEP

      384:b3MLWHn3kIef/ZXRtLWW3pXHVYILpJrr91CzxbeteT:Hn3kIcpj3pXHVY0nrr9ixbYeT

    • Chaos

      Ransomware family first seen in June 2021.

    • Chaos Ransomware

    • Chaos family

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies boot configuration data using bcdedit

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Drops desktop.ini file(s)

MITRE ATT&CK Enterprise v15

Tasks