Analysis

  • max time kernel
    8s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    02-09-2024 11:18

General

  • Target

    Yashma ransomware builder v1.2.exe

  • Size

    538KB

  • MD5

    13e878ed7e547523cffc5728f6ba4190

  • SHA1

    878ad3025f8ea6b61ad4521782035963b3675a52

  • SHA256

    f9a5a72ead096594c5d59abe706e3716f6000c3b4ebd7690f2eb114a37d1a7db

  • SHA512

    a7fa4f14deb65aa8de18e37e4fba3d2fa6ed696b70c4d0f1f49a65a4d43da76eff0d9a9c4703a6e3c13a37eb5d1a427e43be8c0ea6b1288a50a1c5175d9392c7

  • SSDEEP

    3072:tq0G/vqRT5i2YcRVm16Pn690H7GMgXuD//bFLAkCgkUKEyF9aT5Zt19r+E1/bFLz:U0G/GiWm16YaGMVFLQdD8FLz

Score
10/10

Malware Config

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 19 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Yashma ransomware builder v1.2.exe
    "C:\Users\Admin\AppData\Local\Temp\Yashma ransomware builder v1.2.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:3544

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3544-0-0x00007FF8A6D53000-0x00007FF8A6D55000-memory.dmp

    Filesize

    8KB

  • memory/3544-1-0x0000000000E30000-0x0000000000EBC000-memory.dmp

    Filesize

    560KB

  • memory/3544-2-0x00007FF8A6D50000-0x00007FF8A7812000-memory.dmp

    Filesize

    10.8MB

  • memory/3544-3-0x00007FF8A6D50000-0x00007FF8A7812000-memory.dmp

    Filesize

    10.8MB

  • memory/3544-4-0x00007FF8A6D50000-0x00007FF8A7812000-memory.dmp

    Filesize

    10.8MB

  • memory/3544-5-0x00007FF8A6D53000-0x00007FF8A6D55000-memory.dmp

    Filesize

    8KB

  • memory/3544-6-0x00007FF8A6D50000-0x00007FF8A7812000-memory.dmp

    Filesize

    10.8MB