Analysis

  • max time kernel
    105s
  • max time network
    97s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/02/2023, 10:31

General

  • Target

    abstra.exe

  • Size

    4.5MB

  • MD5

    166672e8618270898071c586e4eccd74

  • SHA1

    b77304960f1836f5e98eadfdd2576d8a21361ead

  • SHA256

    27196aea5ba344d4e9d9b749c095735671f26dc5fabb5d63170a6888a0e34d6c

  • SHA512

    ff8d5638d12df87de39803c9ca6b4c5bae942966755b9c0c57e98d296146398312c1b1109457967f8402be6c32e2b9ab9b9f6cbfd84080dc70569d5b15ff4ba4

  • SSDEEP

    49152:RHmzNJHkCHCmCZkvcPnCF907fX8oWn4RSvC+VwwL/lZV4PRinE2ZN2HMJNb1BF:RQa1Ry4RSLJjYsJNb1BF

Score
3/10

Malware Config

Signatures

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 55 IoCs
  • Modifies system certificate store 2 TTPs 15 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\abstra.exe
    "C:\Users\Admin\AppData\Local\Temp\abstra.exe"
    1⤵
    • Modifies registry class
    • Modifies system certificate store
    • Suspicious use of SetWindowsHookEx
    PID:4460
  • C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\a.txt
    1⤵
    • Opens file in notepad (likely ransom note)
    PID:4968

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\Desktop\a.txt

    Filesize

    2.1MB

    MD5

    029d9eb451bd27af2c88eba857d509f5

    SHA1

    43ca378bc1e4f3b50f24010485551112851c8c27

    SHA256

    95afef29bba7a9d285311b4128f56d51fe77e9e41d8014078206be9bc49a67fc

    SHA512

    4cb54139a004d681feb617fdef5215cedc8d31772508b1ced46bd8388953079c6c3cf5771f1d56719fd0c9165a3eaa77f1f348868f7fcd9c84cdfb67396df5c3