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Analysis

  • max time kernel
    261s
  • max time network
    203s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/11/2024, 22:03

General

  • Target

    Quasar v1.4.1/Quasar.exe

  • Size

    1.2MB

  • MD5

    12ebf922aa80d13f8887e4c8c5e7be83

  • SHA1

    7f87a80513e13efd45175e8f2511c2cd17ff51e8

  • SHA256

    43315abb9c8be9a39782bd8694a7ea9f16a867500dc804454d04b8bf2c15c51e

  • SHA512

    fda5071e15cf077d202b08db741bbfb3dbd815acc41deec7b7d44e055cac408e2f2de7233f8f9c5c618afd00ffc2fc4c6e8352cbdf18f9aab55d980dcb58a275

  • SSDEEP

    12288:IwPs012cBBBYiL9l/bFfpBBBBBBBBBBBBcA:jBBBYiLvzFfpBBBBBBBBBBBBcA

Score
10/10

Malware Config

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies Internet Explorer settings 1 TTPs 4 IoCs
  • Modifies registry class 62 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Quasar v1.4.1\Quasar.exe
    "C:\Users\Admin\AppData\Local\Temp\Quasar v1.4.1\Quasar.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:4508
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe" /select, "C:\Users\Admin\AppData\Local\Temp\Quasar v1.4.1\quasar.p12"
      2⤵
        PID:3872
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      PID:3756
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:2980

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\Quasar v1.4.1\quasar.p12

        Filesize

        4KB

        MD5

        2797d1fbb7a899dadb23eb2c0111dc4d

        SHA1

        95518f47001fc86398292da2bc2600e87c313767

        SHA256

        e7fd9b5fe166feb50eae3582ab21abebcd5c091ad8f9b960258b158310c37cc2

        SHA512

        839fe74d3ec51666686a31484f1f8c7b0897b845a1f366344ab4bf2a555f21e5a33325cf975089dee17dc687c93a910743c20c86b3bee93039c831ee6bd5a848

      • memory/4508-3-0x00007FF897550000-0x00007FF898011000-memory.dmp

        Filesize

        10.8MB

      • memory/4508-2-0x00000245A5100000-0x00000245A5116000-memory.dmp

        Filesize

        88KB

      • memory/4508-0-0x00007FF897553000-0x00007FF897555000-memory.dmp

        Filesize

        8KB

      • memory/4508-4-0x00007FF897550000-0x00007FF898011000-memory.dmp

        Filesize

        10.8MB

      • memory/4508-5-0x00000245A8140000-0x00000245A846E000-memory.dmp

        Filesize

        3.2MB

      • memory/4508-6-0x00007FF897553000-0x00007FF897555000-memory.dmp

        Filesize

        8KB

      • memory/4508-7-0x00007FF897550000-0x00007FF898011000-memory.dmp

        Filesize

        10.8MB

      • memory/4508-8-0x00007FF897550000-0x00007FF898011000-memory.dmp

        Filesize

        10.8MB

      • memory/4508-1-0x000002458AC30000-0x000002458AD68000-memory.dmp

        Filesize

        1.2MB

      • memory/4508-33-0x00000245A5F10000-0x00000245A5F28000-memory.dmp

        Filesize

        96KB

      • memory/4508-34-0x00000245A9BB0000-0x00000245A9C00000-memory.dmp

        Filesize

        320KB

      • memory/4508-35-0x00000245A9CC0000-0x00000245A9D72000-memory.dmp

        Filesize

        712KB

      • memory/4508-36-0x00000245A9C00000-0x00000245A9C4C000-memory.dmp

        Filesize

        304KB