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Analysis

  • max time kernel
    133s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/12/2022, 11:31

General

  • Target

    a30153637e0ae407377f15dc4f2c809cbfb0b6f866d2a490db2281df24406cde.exe

  • Size

    52KB

  • MD5

    f3bb66276e7ac3a94edc1a9a9ca53c37

  • SHA1

    e2f6fec017026e5563398fb8495ce646868e302b

  • SHA256

    a30153637e0ae407377f15dc4f2c809cbfb0b6f866d2a490db2281df24406cde

  • SHA512

    9cd768523c75074fa4b4b4f99d1548c160a7f5fb87d20b28043e5bb4cca9ab4496aa0ed643b6f12c6f75b59565df4bda8fd9c7fd5e28a7d9327384447f5b58d8

  • SSDEEP

    768:GSnjtx4xj1NVf84XWWJtvdvpofMB9pXJXHMXxTIeRtYU7:1ExRrft3CaBsBTIefR7

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Drops autorun.inf file 1 TTPs 26 IoCs

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

  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a30153637e0ae407377f15dc4f2c809cbfb0b6f866d2a490db2281df24406cde.exe
    "C:\Users\Admin\AppData\Local\Temp\a30153637e0ae407377f15dc4f2c809cbfb0b6f866d2a490db2281df24406cde.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4364
    • C:\Windows\winlogon.exe
      "C:\Windows\winlogon.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops autorun.inf file
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:5020

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\winlogon.exe

    Filesize

    52KB

    MD5

    f3bb66276e7ac3a94edc1a9a9ca53c37

    SHA1

    e2f6fec017026e5563398fb8495ce646868e302b

    SHA256

    a30153637e0ae407377f15dc4f2c809cbfb0b6f866d2a490db2281df24406cde

    SHA512

    9cd768523c75074fa4b4b4f99d1548c160a7f5fb87d20b28043e5bb4cca9ab4496aa0ed643b6f12c6f75b59565df4bda8fd9c7fd5e28a7d9327384447f5b58d8

  • C:\Windows\winlogon.exe

    Filesize

    52KB

    MD5

    f3bb66276e7ac3a94edc1a9a9ca53c37

    SHA1

    e2f6fec017026e5563398fb8495ce646868e302b

    SHA256

    a30153637e0ae407377f15dc4f2c809cbfb0b6f866d2a490db2281df24406cde

    SHA512

    9cd768523c75074fa4b4b4f99d1548c160a7f5fb87d20b28043e5bb4cca9ab4496aa0ed643b6f12c6f75b59565df4bda8fd9c7fd5e28a7d9327384447f5b58d8