Analysis

  • max time kernel
    142s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    19-12-2023 16:50

General

  • Target

    61d8551b55b55b3d929e2281362b9513.exe

  • Size

    1.3MB

  • MD5

    61d8551b55b55b3d929e2281362b9513

  • SHA1

    3e140d3c4e8e261bd5ff3308bbf0d03cb288f278

  • SHA256

    61ac9f591b1d67f0c954049d2e6d15cebf213055d6ed6ee0cada7a1f295b1b96

  • SHA512

    c093444f4dcc78db595e42322e463747d980b2dbd6a51a88ac620d9728e4c457e9656777a624302a123fafd473a3b374d5d9cfe3b0f0e755695fb9ffc95e731c

  • SSDEEP

    24576:q9cIUWY2lnQrwrAXnKGc0tCaZWgz9L1jFo9teFGLIEQ9YmChH5YvdVaCUmNz5:5dvAwdnKutCaZWgzVJa9t6GkEAW9KaC

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Office04

C2

0.tcp.ngrok.io:14530

Mutex

QSR_MUTEX_w8Mfgcdxl7hldMH2pY

Attributes
  • encryption_key

    zYcujUQPEU4C2FHrr1HG

  • install_name

    Diciple Cheats Loader-Protected.exe

  • log_directory

    Key Strokes

  • reconnect_delay

    3000

  • startup_key

    svhost.exe

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Program crash 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\61d8551b55b55b3d929e2281362b9513.exe
    "C:\Users\Admin\AppData\Local\Temp\61d8551b55b55b3d929e2281362b9513.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2188
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2188 -s 1080
      2⤵
      • Program crash
      PID:2136

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2188-0-0x0000000000110000-0x0000000000510000-memory.dmp

    Filesize

    4.0MB

  • memory/2188-1-0x0000000074A60000-0x000000007514E000-memory.dmp

    Filesize

    6.9MB

  • memory/2188-2-0x0000000000110000-0x0000000000510000-memory.dmp

    Filesize

    4.0MB

  • memory/2188-3-0x0000000000B60000-0x0000000000BA0000-memory.dmp

    Filesize

    256KB

  • memory/2188-6-0x0000000074A60000-0x000000007514E000-memory.dmp

    Filesize

    6.9MB

  • memory/2188-7-0x0000000000B60000-0x0000000000BA0000-memory.dmp

    Filesize

    256KB