Analysis

  • max time kernel
    146s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/08/2024, 01:49

General

  • Target
    987bb8bcc92a914d249989e8cca3b2e9_JaffaCakes118.exe
  • Size 9.0MB
  • Sample240815-b8zhhatcqp
  • SHA256 5dd3a4cd00a5c5ce6335975b1541a39067f8c34f407202d7d631214bbfe47094
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • quasar

Version
  • 1.3.0.0

Botnet
  • Business

C2
  • craft.ooguy.com:1981

Mutex
  • GpDg1xgoq8qb9M6Jp6

Attributes
  • encryption_key

    bJJpHxbw80umglURXtYY

  • install_name

    Client.exe

  • log_directory

    4k

  • 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
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 18 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 2 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 51 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\987bb8bcc92a914d249989e8cca3b2e9_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\987bb8bcc92a914d249989e8cca3b2e9_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:3932
    • C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /query
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1576
    • C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /sc MINUTE /tn FoxitPhantomPDF /MO 1 /tr C:\Users\Admin\AppData\Roaming\FoxitPhantom
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2396
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1872
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\zVUV92y3dQF8.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4328
        • C:\Windows\SysWOW64\chcp.com
          chcp 65001
          4⤵
          • System Location Discovery: System Language Discovery
          PID:1796
        • C:\Windows\SysWOW64\PING.EXE
          ping -n 10 localhost
          4⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:1172
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2952
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1872 -s 1680
        3⤵
        • Program crash
        PID:4696
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1872 -ip 1872
    1⤵
      PID:4232
    • C:\Users\Admin\AppData\Roaming\FoxitPhantom
      C:\Users\Admin\AppData\Roaming\FoxitPhantom
      1⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:2436
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /query
        2⤵
        • System Location Discovery: System Language Discovery
        PID:4724
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        2⤵
        • Checks computer location settings
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4828
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\AT0gkepPsF3c.bat" "
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:4720
          • C:\Windows\SysWOW64\chcp.com
            chcp 65001
            4⤵
            • System Location Discovery: System Language Discovery
            PID:3428
          • C:\Windows\SysWOW64\PING.EXE
            ping -n 10 localhost
            4⤵
            • System Location Discovery: System Language Discovery
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:1948
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
            4⤵
            • System Location Discovery: System Language Discovery
            PID:1568
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4828 -s 2300
          3⤵
          • Program crash
          PID:3624
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4828 -ip 4828
      1⤵
        PID:4060
      • C:\Users\Admin\AppData\Roaming\FoxitPhantom
        C:\Users\Admin\AppData\Roaming\FoxitPhantom
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:4704
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /query
          2⤵
          • System Location Discovery: System Language Discovery
          PID:1088
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          2⤵
            PID:2444
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
            2⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:552

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

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              Downloads

              FoxitPhantom.log

              • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\FoxitPhantom.log
              • Size 315B
              • SHA256 da3437f337aca0e1f8d7b187abcd9112d88beddde8ab8ae5aa8a8ab91b6e9698
              • MD5 SHA1 SHA512

              RegAsm.exe.log

              • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\RegAsm.exe.log
              • Size 42B
              • SHA256 d8988d672d6915b46946b28c06ad8066c50041f6152a91d37ffa5cf129cc146b
              • MD5 SHA1 SHA512

              AT0gkepPsF3c.bat

              • Path C:\Users\Admin\AppData\Local\Temp\AT0gkepPsF3c.bat
              • Size 215B
              • SHA256 9a941769628f02d669d772fc350024074c34cf82b74373bf7751bac190b99880
              • MD5 SHA1 SHA512

              zVUV92y3dQF8.bat

              • Path C:\Users\Admin\AppData\Local\Temp\zVUV92y3dQF8.bat
              • Size 215B
              • SHA256 c7dd394621f8b0e8008f00d403d3b5ec481ce82ed022ab7485c791f2505ac5ba
              • MD5 SHA1 SHA512

              08-15-2024

              • Path C:\Users\Admin\AppData\Roaming\4k\08-15-2024
              • Size 224B
              • SHA256 8a9dc35901b578c8017576ea0a3663bc3ccad43ff47441343fc10c1da24a7b83
              • MD5 SHA1 SHA512

              FoxitPhantom

              • Path C:\Users\Admin\AppData\Roaming\FoxitPhantom
              • Size 9.0MB
              • SHA256 5dd3a4cd00a5c5ce6335975b1541a39067f8c34f407202d7d631214bbfe47094
              • MD5 SHA1 SHA512 SSDEEP

              memory/1872-16-0x00000000055C0000-0x0000000005626000-memory.dmp

              memory/1872-20-0x0000000006AA0000-0x0000000006AAA000-memory.dmp

              memory/1872-9-0x0000000000400000-0x000000000045E000-memory.dmp

              memory/1872-25-0x0000000074660000-0x0000000074E10000-memory.dmp

              memory/1872-12-0x0000000074660000-0x0000000074E10000-memory.dmp

              memory/1872-18-0x0000000006720000-0x000000000675C000-memory.dmp

              memory/1872-14-0x00000000059B0000-0x0000000005F54000-memory.dmp

              memory/1872-15-0x0000000074660000-0x0000000074E10000-memory.dmp

              memory/1872-17-0x00000000062E0000-0x00000000062F2000-memory.dmp

              memory/2436-30-0x0000000005FB0000-0x0000000006014000-memory.dmp

              memory/2952-26-0x0000000000C90000-0x0000000000CA2000-memory.dmp

              memory/3932-5-0x0000000006360000-0x00000000063C4000-memory.dmp

              memory/3932-7-0x000000007466E000-0x000000007466F000-memory.dmp

              memory/3932-11-0x0000000074660000-0x0000000074E10000-memory.dmp

              memory/3932-8-0x0000000074660000-0x0000000074E10000-memory.dmp

              memory/3932-0-0x000000007466E000-0x000000007466F000-memory.dmp

              memory/3932-13-0x0000000074660000-0x0000000074E10000-memory.dmp

              memory/3932-4-0x0000000006200000-0x0000000006264000-memory.dmp

              memory/3932-3-0x0000000074660000-0x0000000074E10000-memory.dmp

              memory/3932-2-0x0000000005D90000-0x0000000005E22000-memory.dmp

              memory/3932-1-0x0000000000C20000-0x0000000001524000-memory.dmp

              memory/4704-42-0x0000000006470000-0x00000000064D4000-memory.dmp