Analysis

  • max time kernel
    150s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20251231-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20251231-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/01/2026, 07:33

General

  • Target
    ie.exe
  • Size 3.1MB
  • Sample260106-jdl8paev6d
  • SHA256 5c8a4a8a13892a089efe1ad9b78a01e5811e7bb5b77e4c62d6da7781abf32198
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • quasar

Version
  • 1.4.1

Botnet
  • Office04

C2
  • virtuoso.uk.com:4782

  • traumvillen.de.com:4782

  • client.virtuoso.uk.com:4782

  • client.traumvillen.de.com:4782

  • server.virtuoso.uk.com:4782

  • server.traumvillen.de.com:4782

Mutex
  • c6afbaf2-b818-40a0-b739-28c0a61615e0

Attributes
  • encryption_key

    62BC9D9DFC3C056E2C9CDF76A546148831165DEF

  • install_name

    ie.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    Programme

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ie.exe
    "C:\Users\Admin\AppData\Local\Temp\ie.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5984
    • C:\Windows\system32\Programme\ie.exe
      "C:\Windows\system32\Programme\ie.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:4544

Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        ie.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\ie.exe.log
        • Size 1KB
        • SHA256 ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924
        • MD5 SHA1 SHA512

        ie.exe

        • Path C:\Windows\System32\Programme\ie.exe
        • Size 3.1MB
        • SHA256 5c8a4a8a13892a089efe1ad9b78a01e5811e7bb5b77e4c62d6da7781abf32198
        • MD5 SHA1 SHA512 SSDEEP

        memory/4544-8-0x000000001B340000-0x000000001B350000-memory.dmp

        memory/4544-9-0x00000000027C0000-0x0000000002810000-memory.dmp

        memory/4544-10-0x000000001BED0000-0x000000001BF82000-memory.dmp

        memory/5984-0-0x0000000000610000-0x0000000000934000-memory.dmp

        memory/5984-1-0x000000001B680000-0x000000001B690000-memory.dmp