Windows 7 deprecation

Windows 7 will be removed from tria.ge on 2025-03-31

Analysis

  • max time kernel
    160s
  • max time network
    175s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/03/2024, 22:42

General

  • Target

    Client-built-stub-fub.exe

  • Size

    3.2MB

  • MD5

    9f12e3815f269826203a1baae1761698

  • SHA1

    a6f1047279952df4f0c4b0f15fbef84d2a8ef2f5

  • SHA256

    fbe5f5d43d9c6631ff75557f9eec341c15b58cac301de3b573bc1913a4daa3e0

  • SHA512

    1c086a83fa969bacadef854eaddc6ad72f51abb1536a27af5c89604df3cc9641765cbd4d5bb6144956b07d0a8fd8fd3318665e6185b69d80235fdbc92d0f960d

  • SSDEEP

    49152:St+NHEEtT54YyDAP4m2w99yvHT+8sVEDjP+IMh2d8KdZOQra3txClJHgo4jL4/jL:cbEt9HnEo9U+KjPe0d/dcTHmtx4j6jL

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Default

C2

dksj.wi-fi.rip:4782

Mutex

f62fc232-4c6c-47fc-9704-2111bc364f22

Attributes
  • encryption_key

    E883FEA800A47B3B853A04DDCD0D162E782B41B7

  • install_name

    Client.exe

  • log_directory

    fdgdg

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 1 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client-built-stub-fub.exe
    "C:\Users\Admin\AppData\Local\Temp\Client-built-stub-fub.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: RenamesItself
    • Suspicious use of WriteProcessMemory
    PID:5112
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:5116
    • C:\Windows\SysWOW64\cmd.exe
      "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\ereregd"
      2⤵
        PID:2320
      • C:\Windows\SysWOW64\cmd.exe
        "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\ereregd\ereregd.exe'" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3696
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\ereregd\ereregd.exe'" /f
          3⤵
          • Creates scheduled task(s)
          PID:4788
      • C:\Windows\SysWOW64\cmd.exe
        "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\Client-built-stub-fub.exe" "C:\Users\Admin\AppData\Roaming\ereregd\ereregd.exe"
        2⤵
          PID:2180

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/5112-7-0x0000000074610000-0x0000000074DC0000-memory.dmp

        Filesize

        7.7MB

      • memory/5112-1-0x0000000000B70000-0x0000000000E9E000-memory.dmp

        Filesize

        3.2MB

      • memory/5112-2-0x0000000003300000-0x0000000003310000-memory.dmp

        Filesize

        64KB

      • memory/5112-3-0x0000000005D20000-0x00000000062C4000-memory.dmp

        Filesize

        5.6MB

      • memory/5112-0-0x0000000074610000-0x0000000074DC0000-memory.dmp

        Filesize

        7.7MB

      • memory/5116-6-0x0000000074610000-0x0000000074DC0000-memory.dmp

        Filesize

        7.7MB

      • memory/5116-4-0x0000000000400000-0x0000000000724000-memory.dmp

        Filesize

        3.1MB

      • memory/5116-8-0x0000000005770000-0x0000000005802000-memory.dmp

        Filesize

        584KB

      • memory/5116-9-0x0000000005A30000-0x0000000005A40000-memory.dmp

        Filesize

        64KB

      • memory/5116-10-0x0000000005820000-0x000000000582A000-memory.dmp

        Filesize

        40KB

      • memory/5116-11-0x00000000069D0000-0x0000000006FE8000-memory.dmp

        Filesize

        6.1MB

      • memory/5116-12-0x0000000005DB0000-0x0000000005E00000-memory.dmp

        Filesize

        320KB

      • memory/5116-13-0x00000000065D0000-0x0000000006682000-memory.dmp

        Filesize

        712KB

      • memory/5116-14-0x0000000074610000-0x0000000074DC0000-memory.dmp

        Filesize

        7.7MB

      • memory/5116-15-0x0000000005A30000-0x0000000005A40000-memory.dmp

        Filesize

        64KB