Analysis

  • max time kernel
    143s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    31/03/2024, 16:48

General

  • Target
    Quasar v1.4.1/Quasar.exe
  • Size 1.2MB
  • Sample240331-va3xtafb7w
  • SHA256 43315abb9c8be9a39782bd8694a7ea9f16a867500dc804454d04b8bf2c15c51e
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 3 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⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2168
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe" /select, "C:\Users\Admin\AppData\Local\Temp\Quasar v1.4.1\quasar.p12"
      2⤵
        PID:3036
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of FindShellTrayWindow
      PID:2468

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          quasar.p12

          • Path C:\Users\Admin\AppData\Local\Temp\Quasar v1.4.1\quasar.p12
          • Size 4KB
          • SHA256 a399fb1d7b9dc28a4c1e2db6a5242c8a57483e9b7aaee301649356ea3740e513
          • MD5 SHA1 SHA512 SSDEEP

          memory/2168-8-0x000000001B510000-0x000000001B590000-memory.dmp

          memory/2168-30-0x000000001B7C0000-0x000000001B7D8000-memory.dmp

          memory/2168-3-0x0000000000380000-0x0000000000396000-memory.dmp

          memory/2168-4-0x000000001B510000-0x000000001B590000-memory.dmp

          memory/2168-5-0x000000001F020000-0x000000001F34E000-memory.dmp

          memory/2168-6-0x000007FEF5C50000-0x000007FEF663C000-memory.dmp

          memory/2168-2-0x000000001B510000-0x000000001B590000-memory.dmp

          memory/2168-9-0x000000001B510000-0x000000001B590000-memory.dmp

          memory/2168-7-0x000000001B510000-0x000000001B590000-memory.dmp

          memory/2168-1-0x000007FEF5C50000-0x000007FEF663C000-memory.dmp

          memory/2168-0-0x0000000000800000-0x0000000000938000-memory.dmp

          memory/2168-32-0x000000001EC90000-0x000000001ECDC000-memory.dmp

          memory/2468-31-0x0000000003C90000-0x0000000003CA0000-memory.dmp

          memory/2468-33-0x0000000003C80000-0x0000000003C81000-memory.dmp

          memory/2468-35-0x0000000003C80000-0x0000000003C81000-memory.dmp