Analysis

  • max time kernel
    148s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-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 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 4 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 41 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\61d8551b55b55b3d929e2281362b9513.exe
    "C:\Users\Admin\AppData\Local\Temp\61d8551b55b55b3d929e2281362b9513.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4932
    • C:\Windows\SysWOW64\schtasks.exe
      "schtasks" /create /tn "svhost.exe" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\61d8551b55b55b3d929e2281362b9513.exe" /rl HIGHEST /f
      2⤵
      • Creates scheduled task(s)
      PID:880
    • C:\Windows\SysWOW64\SubDir\Diciple Cheats Loader-Protected.exe
      "C:\Windows\SysWOW64\SubDir\Diciple Cheats Loader-Protected.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3100
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "svhost.exe" /sc ONLOGON /tr "C:\Windows\SysWOW64\SubDir\Diciple Cheats Loader-Protected.exe" /rl HIGHEST /f
        3⤵
        • Creates scheduled task(s)
        PID:4064

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Windows\SysWOW64\SubDir\Diciple Cheats Loader-Protected.exe

    Filesize

    1.3MB

    MD5

    61d8551b55b55b3d929e2281362b9513

    SHA1

    3e140d3c4e8e261bd5ff3308bbf0d03cb288f278

    SHA256

    61ac9f591b1d67f0c954049d2e6d15cebf213055d6ed6ee0cada7a1f295b1b96

    SHA512

    c093444f4dcc78db595e42322e463747d980b2dbd6a51a88ac620d9728e4c457e9656777a624302a123fafd473a3b374d5d9cfe3b0f0e755695fb9ffc95e731c

  • memory/3100-20-0x0000000000BB0000-0x0000000000FB0000-memory.dmp

    Filesize

    4.0MB

  • memory/3100-26-0x0000000000BB0000-0x0000000000FB0000-memory.dmp

    Filesize

    4.0MB

  • memory/3100-28-0x0000000074340000-0x0000000074AF0000-memory.dmp

    Filesize

    7.7MB

  • memory/3100-13-0x0000000000BB0000-0x0000000000FB0000-memory.dmp

    Filesize

    4.0MB

  • memory/3100-24-0x00000000086D0000-0x00000000086DA000-memory.dmp

    Filesize

    40KB

  • memory/3100-22-0x0000000006F10000-0x0000000006F20000-memory.dmp

    Filesize

    64KB

  • memory/3100-18-0x0000000000BB0000-0x0000000000FB0000-memory.dmp

    Filesize

    4.0MB

  • memory/3100-19-0x0000000074340000-0x0000000074AF0000-memory.dmp

    Filesize

    7.7MB

  • memory/3100-29-0x0000000006F10000-0x0000000006F20000-memory.dmp

    Filesize

    64KB

  • memory/4932-6-0x00000000074B0000-0x0000000007516000-memory.dmp

    Filesize

    408KB

  • memory/4932-8-0x0000000008830000-0x000000000886C000-memory.dmp

    Filesize

    240KB

  • memory/4932-17-0x0000000001000000-0x0000000001400000-memory.dmp

    Filesize

    4.0MB

  • memory/4932-7-0x0000000008410000-0x0000000008422000-memory.dmp

    Filesize

    72KB

  • memory/4932-21-0x0000000074340000-0x0000000074AF0000-memory.dmp

    Filesize

    7.7MB

  • memory/4932-0-0x0000000001000000-0x0000000001400000-memory.dmp

    Filesize

    4.0MB

  • memory/4932-2-0x0000000074340000-0x0000000074AF0000-memory.dmp

    Filesize

    7.7MB

  • memory/4932-5-0x0000000007520000-0x0000000007530000-memory.dmp

    Filesize

    64KB

  • memory/4932-4-0x0000000007410000-0x00000000074A2000-memory.dmp

    Filesize

    584KB

  • memory/4932-3-0x00000000078A0000-0x0000000007E44000-memory.dmp

    Filesize

    5.6MB

  • memory/4932-1-0x0000000001000000-0x0000000001400000-memory.dmp

    Filesize

    4.0MB