Analysis

  • max time kernel
    140s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/10/2023, 16:48

General

  • Target
    file.exe
  • Size 3.1MB
  • Sample231002-va38ksch31
  • SHA256 d273d63ec7562e27003ad53db329429452d86faef87b6d64b72875cdb1dd3cee
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1788
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp433E.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3948
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:3492
      • C:\ProgramData\x64netJS\JQSZY.exe
        "C:\ProgramData\x64netJS\JQSZY.exe"
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2164
        • C:\Windows\System32\cmd.exe
          "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc MINUTE /mo 5 /RL HIGHEST /tn "JQSZY" /tr "C:\ProgramData\x64netJS\JQSZY.exe"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:3380
          • C:\Windows\system32\schtasks.exe
            schtasks /create /f /sc MINUTE /mo 5 /RL HIGHEST /tn "JQSZY" /tr "C:\ProgramData\x64netJS\JQSZY.exe"
            5⤵
            • Creates scheduled task(s)
            PID:3980

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        JQSZY.exe

        • Path C:\ProgramData\x64netJS\JQSZY.exe
        • Size 599.6MB
        • SHA256 b6bf9cdd53de1ab16e2e69312470054ccfc2327e3406be7d8a161eaa21f304e1
        • MD5 SHA1 SHA512 SSDEEP

        JQSZY.exe

        • Path C:\ProgramData\x64netJS\JQSZY.exe
        • Size 586.4MB
        • SHA256 ef104884aa577e1fb304a13f0e0d1b0a7c8f6be0553d91a345d17b964ea6599b
        • MD5 SHA1 SHA512 SSDEEP

        tmp433E.tmp.bat

        • Path C:\Users\Admin\AppData\Local\Temp\tmp433E.tmp.bat
        • Size 142B
        • SHA256 0f22157e9faf9eebd0901dfbf732cf78b3838a5f2f751cf5121b87c9c3ab71f6
        • MD5 SHA1 SHA512

        memory/1788-4-0x00007FFC131A0000-0x00007FFC13C61000-memory.dmp

        memory/1788-0-0x00000000009A0000-0x0000000000CB6000-memory.dmp

        memory/1788-6-0x000000001C810000-0x000000001C820000-memory.dmp

        memory/1788-3-0x0000000001660000-0x0000000001661000-memory.dmp

        memory/1788-13-0x00007FFC131A0000-0x00007FFC13C61000-memory.dmp

        memory/1788-2-0x000000001C810000-0x000000001C820000-memory.dmp

        memory/1788-1-0x00007FFC131A0000-0x00007FFC13C61000-memory.dmp

        memory/2164-17-0x00007FFC131A0000-0x00007FFC13C61000-memory.dmp

        memory/2164-19-0x0000000001DF0000-0x0000000001DF1000-memory.dmp

        memory/2164-18-0x000000001CCC0000-0x000000001CCD0000-memory.dmp

        memory/2164-22-0x00007FFC131A0000-0x00007FFC13C61000-memory.dmp

        memory/2164-23-0x000000001CCC0000-0x000000001CCD0000-memory.dmp

        memory/2164-26-0x00007FFC131A0000-0x00007FFC13C61000-memory.dmp