Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    23-01-2025 10:52

General

  • Target

    Quasar.v1.4.1.zip

  • Size

    3.3MB

  • MD5

    13aa4bf4f5ed1ac503c69470b1ede5c1

  • SHA1

    c0b7dadff8ac37f6d9fd00ae7f375e12812bfc00

  • SHA256

    4cdeb2eae1cec1ab07077142313c524e9cf360cdec63497538c4405c2d8ded62

  • SHA512

    767b03e4e0c2a97cb0282b523bcad734f0c6d226cd1e856f6861e6ae83401d0d30946ad219c8c5de3c90028a0141d3dc0111c85e0a0952156cf09e189709fa7d

  • SSDEEP

    49152:lYLmNgMh/9yUsRFeWMyYISDSwtfxZQNemi57PdHmeFINp/lFnsDbNFNepL6DJo+J:mL9U1yUUQykOQ91XFYBlR8P9d5uNJo9

Score
10/10

Malware Config

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 3 IoCs
  • Executes dropped EXE 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Program Files\7-Zip\7zFM.exe
    "C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\Quasar.v1.4.1.zip"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:316
    • C:\Users\Admin\AppData\Local\Temp\7zOC31245E6\Quasar.exe
      "C:\Users\Admin\AppData\Local\Temp\7zOC31245E6\Quasar.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2476
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2476 -s 584
        3⤵
          PID:2800
      • C:\Users\Admin\AppData\Local\Temp\7zOC3115287\Quasar.exe
        "C:\Users\Admin\AppData\Local\Temp\7zOC3115287\Quasar.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2908
        • C:\Windows\system32\WerFault.exe
          C:\Windows\system32\WerFault.exe -u -p 2908 -s 580
          3⤵
            PID:2596

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\7zOC31245E6\Quasar.exe

        Filesize

        1.2MB

        MD5

        12ebf922aa80d13f8887e4c8c5e7be83

        SHA1

        7f87a80513e13efd45175e8f2511c2cd17ff51e8

        SHA256

        43315abb9c8be9a39782bd8694a7ea9f16a867500dc804454d04b8bf2c15c51e

        SHA512

        fda5071e15cf077d202b08db741bbfb3dbd815acc41deec7b7d44e055cac408e2f2de7233f8f9c5c618afd00ffc2fc4c6e8352cbdf18f9aab55d980dcb58a275

      • memory/2476-11-0x0000000000FC0000-0x00000000010F8000-memory.dmp

        Filesize

        1.2MB

      • memory/2908-24-0x00000000013C0000-0x00000000014F8000-memory.dmp

        Filesize

        1.2MB