Overview

overview

8

Static

static

Document54...df.exe

windows7_x64

8

Document54...df.exe

windows10_x64

8

Analysis

  • max time kernel
    142s
  • max time network
    147s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    09/11/2020, 19:33

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General

  • Target
    Document542020 pdf.exe
  • Size 112KB
  • Sample201109-nf4recngya
  • SHA256 f6d7d1d828b5cee30b58eb471720d990a4f411ac366e0bb79c8f56e854dd98cd
  • MD5 SHA1 SHA512
Score
8/10
persistence

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Checks QEMU agent state file 2 TTPs 4 IoCs

    Checks state file used by QEMU agent, possibly to detect virtualization.

  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
    persistence
  • Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Document542020 pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Document542020 pdf.exe"
    1⤵
    • Checks QEMU agent state file
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4076
    • C:\Users\Admin\AppData\Local\Temp\Document542020 pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\Document542020 pdf.exe"
      2⤵
      • Checks QEMU agent state file
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of WriteProcessMemory
      PID:1464
      • C:\Users\Admin\AppData\Local\Temp\Preciseri9\AAREG.exe
        "C:\Users\Admin\AppData\Local\Temp\Preciseri9\AAREG.exe"
        3⤵
        • Executes dropped EXE
        • Checks QEMU agent state file
        • Adds Run key to start application
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2296
        • C:\Users\Admin\AppData\Local\Temp\Preciseri9\AAREG.exe
          "C:\Users\Admin\AppData\Local\Temp\Preciseri9\AAREG.exe"
          4⤵
          • Checks QEMU agent state file
          • Loads dropped DLL
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          PID:4000

Network

        MITRE ATT&CK Enterprise v6

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        Downloads