Overview

overview

10

Static

static

Qoutation ...92.exe

windows7_x64

10

Qoutation ...92.exe

windows10_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09/11/2020, 19:38

Sharing

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General

  • Target
    Qoutation order34323892.exe
  • Size 580KB
  • Sample201109-vfydpanfbx
  • SHA256 a7e7de656010612d8f5741491c7f5e4480d8face10c5f1c445fdfda6d70b4908
  • MD5 SHA1 SHA512
Score
10/10
quasarcoreentitypersistencerezer0spywaretrojan

Malware Config

Signatures

  • CoreEntity .NET Packer 1 IoCs

    A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

    coreentity
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

    trojanspywarequasar
  • ServiceHost packer 17 IoCs

    Detects ServiceHost packer used for .NET malware

  • rezer0 1 IoCs

    Detects ReZer0, a packer with multiple versions used in various campaigns.

    rezer0
  • Executes dropped EXE 14 IoCs
  • Loads dropped DLL 6 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Looks up external IP address via web service 1 IoCs

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

  • Drops autorun.inf file 1 TTPs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Suspicious use of SetThreadContext 5 IoCs
  • Program crash 1 IoCs
  • Creates scheduled task(s) 1 TTPs 8 IoCs

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

    persistence
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 35 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 133 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Qoutation order34323892.exe
    "C:\Users\Admin\AppData\Local\Temp\Qoutation order34323892.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2028
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rDxwCNkmKn" /XML "C:\Users\Admin\AppData\Local\Temp\tmp250E.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1088
    • C:\Users\Admin\AppData\Local\Temp\Qoutation order34323892.exe
      "{path}"
      2⤵
      • Loads dropped DLL
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:436
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "Quasat Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Qoutation order34323892.exe" /rl HIGHEST /f
        3⤵
        • Creates scheduled task(s)
        PID:1464
      • C:\Users\Admin\AppData\Roaming\SubDir\Client9w.exe
        "C:\Users\Admin\AppData\Roaming\SubDir\Client9w.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1812
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rDxwCNkmKn" /XML "C:\Users\Admin\AppData\Local\Temp\tmp362D.tmp"
          4⤵
          • Creates scheduled task(s)
          PID:1900
        • C:\Users\Admin\AppData\Roaming\SubDir\Client9w.exe
          "{path}"
          4⤵
          • Executes dropped EXE
          PID:752
        • C:\Users\Admin\AppData\Roaming\SubDir\Client9w.exe
          "{path}"
          4⤵
          • Executes dropped EXE
          PID:1660
        • C:\Users\Admin\AppData\Roaming\SubDir\Client9w.exe
          "{path}"
          4⤵
          • Executes dropped EXE
          PID:2004
        • C:\Users\Admin\AppData\Roaming\SubDir\Client9w.exe
          "{path}"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2008
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks" /create /tn "Quasat Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client9w.exe" /rl HIGHEST /f
            5⤵
            • Creates scheduled task(s)
            PID:440
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /create /tn "WINDOWSSYSTEMHOST" /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client9w.exe" /sc MINUTE /MO 1
            5⤵
            • Creates scheduled task(s)
            PID:372
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c ""C:\Users\Admin\AppData\Local\Temp\1sKhjbHCYyqv.bat" "
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:476
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              6⤵
                PID:1992
              • C:\Windows\SysWOW64\PING.EXE
                ping -n 10 localhost
                6⤵
                • Runs ping.exe
                PID:1736
              • C:\Users\Admin\AppData\Roaming\SubDir\Client9w.exe
                "C:\Users\Admin\AppData\Roaming\SubDir\Client9w.exe"
                6⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:1924
                • C:\Windows\SysWOW64\schtasks.exe
                  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rDxwCNkmKn" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA3BE.tmp"
                  7⤵
                  • Creates scheduled task(s)
                  PID:1312
                • C:\Users\Admin\AppData\Roaming\SubDir\Client9w.exe
                  "{path}"
                  7⤵
                  • Executes dropped EXE
                  PID:1624
                • C:\Users\Admin\AppData\Roaming\SubDir\Client9w.exe
                  "{path}"
                  7⤵
                  • Executes dropped EXE
                  PID:1628
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 2008 -s 1560
              5⤵
              • Loads dropped DLL
              • Program crash
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:344
    • C:\Windows\system32\taskeng.exe
      taskeng.exe {1B2BCEDE-0C52-42E2-9FA0-3E6EDB0A7518} S-1-5-21-3825035466-2522850611-591511364-1000:EIDQHRRL\Admin:Interactive:[1]
      1⤵
        PID:976
        • C:\Users\Admin\AppData\Roaming\SubDir\Client9w.exe
          C:\Users\Admin\AppData\Roaming\SubDir\Client9w.exe
          2⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1580
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rDxwCNkmKn" /XML "C:\Users\Admin\AppData\Local\Temp\tmp587C.tmp"
            3⤵
            • Creates scheduled task(s)
            PID:1444
          • C:\Users\Admin\AppData\Roaming\SubDir\Client9w.exe
            "{path}"
            3⤵
            • Executes dropped EXE
            PID:1824
        • C:\Users\Admin\AppData\Roaming\SubDir\Client9w.exe
          C:\Users\Admin\AppData\Roaming\SubDir\Client9w.exe
          2⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1832
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rDxwCNkmKn" /XML "C:\Users\Admin\AppData\Local\Temp\tmp17E4.tmp"
            3⤵
            • Creates scheduled task(s)
            PID:1392
          • C:\Users\Admin\AppData\Roaming\SubDir\Client9w.exe
            "{path}"
            3⤵
            • Executes dropped EXE
            PID:876
          • C:\Users\Admin\AppData\Roaming\SubDir\Client9w.exe
            "{path}"
            3⤵
            • Executes dropped EXE
            PID:1444
          • C:\Users\Admin\AppData\Roaming\SubDir\Client9w.exe
            "{path}"
            3⤵
            • Executes dropped EXE
            PID:1812

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            memory/344-48-0x0000000002080000-0x0000000002091000-memory.dmp
            Download

            memory/344-71-0x0000000002700000-0x0000000002711000-memory.dmp
            Download

            memory/436-8-0x0000000000400000-0x000000000044E000-memory.dmp
            Download

            memory/436-10-0x0000000000400000-0x000000000044E000-memory.dmp
            Download

            memory/436-11-0x0000000000400000-0x000000000044E000-memory.dmp
            Download

            memory/436-12-0x0000000073500000-0x0000000073BEE000-memory.dmp
            Download

            memory/1580-95-0x0000000073500000-0x0000000073BEE000-memory.dmp
            Download

            memory/1628-90-0x0000000073500000-0x0000000073BEE000-memory.dmp
            Download

            memory/1812-20-0x0000000073500000-0x0000000073BEE000-memory.dmp
            Download

            memory/1812-36-0x0000000001F40000-0x0000000001F70000-memory.dmp
            Download

            memory/1812-21-0x0000000000230000-0x0000000000231000-memory.dmp
            Download

            memory/1812-129-0x0000000073500000-0x0000000073BEE000-memory.dmp
            Download

            memory/1824-108-0x0000000073500000-0x0000000073BEE000-memory.dmp
            Download

            memory/1832-114-0x0000000073500000-0x0000000073BEE000-memory.dmp
            Download

            memory/1924-76-0x0000000073500000-0x0000000073BEE000-memory.dmp
            Download

            memory/2008-37-0x0000000073500000-0x0000000073BEE000-memory.dmp
            Download

            memory/2028-4-0x00000000002E0000-0x00000000002E3000-memory.dmp
            Download

            memory/2028-5-0x0000000004AA0000-0x0000000004AF0000-memory.dmp
            Download

            memory/2028-3-0x00000000003C0000-0x0000000000414000-memory.dmp
            Download

            memory/2028-1-0x0000000000320000-0x0000000000321000-memory.dmp
            Download

            memory/2028-0-0x0000000074230000-0x000000007491E000-memory.dmp
            Download