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Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/01/2024, 03:04

General

  • Target

    epolizer.exe

  • Size

    37KB

  • MD5

    5eaeb36796615de2cd46d48149c60123

  • SHA1

    c918fc01d7d2f90353d261891d9316f796d3c735

  • SHA256

    a33a3bd84a6be254fdf4cfc0ad6cb9264a939f04ce98eb376944f13ec4ae74d3

  • SHA512

    60323b5c9852ade1ad1a9cfc2c24430702bcd6ce907c4b982ecc9aa59509baa677729baeb432b155b762b5aa1f18a3160c1d786bfe629eb4f69a0b6d0914b142

  • SSDEEP

    384:hoNqiUx54NLHdayszfhen9XsWiXArAF+rMRTyN/0L+EcoinblneHQM3epzXtNrnG:GrZdJszfhex9iwrM+rMRa8Nurst

Score
8/10

Malware Config

Signatures

  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\epolizer.exe
    "C:\Users\Admin\AppData\Local\Temp\epolizer.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:948
    • C:\Users\Admin\AppData\Roaming\server.exe
      "C:\Users\Admin\AppData\Roaming\server.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4772
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\server.exe" "server.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:1708

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\server.exe

    Filesize

    37KB

    MD5

    5eaeb36796615de2cd46d48149c60123

    SHA1

    c918fc01d7d2f90353d261891d9316f796d3c735

    SHA256

    a33a3bd84a6be254fdf4cfc0ad6cb9264a939f04ce98eb376944f13ec4ae74d3

    SHA512

    60323b5c9852ade1ad1a9cfc2c24430702bcd6ce907c4b982ecc9aa59509baa677729baeb432b155b762b5aa1f18a3160c1d786bfe629eb4f69a0b6d0914b142

  • memory/948-0-0x0000000074E20000-0x00000000753D1000-memory.dmp

    Filesize

    5.7MB

  • memory/948-2-0x0000000001310000-0x0000000001320000-memory.dmp

    Filesize

    64KB

  • memory/948-1-0x0000000074E20000-0x00000000753D1000-memory.dmp

    Filesize

    5.7MB

  • memory/948-12-0x0000000074E20000-0x00000000753D1000-memory.dmp

    Filesize

    5.7MB

  • memory/4772-13-0x0000000074E20000-0x00000000753D1000-memory.dmp

    Filesize

    5.7MB

  • memory/4772-14-0x00000000011E0000-0x00000000011F0000-memory.dmp

    Filesize

    64KB

  • memory/4772-15-0x0000000074E20000-0x00000000753D1000-memory.dmp

    Filesize

    5.7MB

  • memory/4772-17-0x00000000011E0000-0x00000000011F0000-memory.dmp

    Filesize

    64KB

  • memory/4772-18-0x0000000074E20000-0x00000000753D1000-memory.dmp

    Filesize

    5.7MB

  • memory/4772-19-0x00000000011E0000-0x00000000011F0000-memory.dmp

    Filesize

    64KB

  • memory/4772-20-0x00000000011E0000-0x00000000011F0000-memory.dmp

    Filesize

    64KB