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Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-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

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed

C2

bit-number.gl.at.ply.gg:53003

Mutex

e0d9528ae802acc08bc47fdf4f0fa2b2

Attributes
  • reg_key

    e0d9528ae802acc08bc47fdf4f0fa2b2

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 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 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\epolizer.exe
    "C:\Users\Admin\AppData\Local\Temp\epolizer.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1992
    • 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:1400
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\server.exe" "server.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:1936

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    37KB

    MD5

    5eaeb36796615de2cd46d48149c60123

    SHA1

    c918fc01d7d2f90353d261891d9316f796d3c735

    SHA256

    a33a3bd84a6be254fdf4cfc0ad6cb9264a939f04ce98eb376944f13ec4ae74d3

    SHA512

    60323b5c9852ade1ad1a9cfc2c24430702bcd6ce907c4b982ecc9aa59509baa677729baeb432b155b762b5aa1f18a3160c1d786bfe629eb4f69a0b6d0914b142

  • memory/1400-10-0x0000000074530000-0x0000000074ADB000-memory.dmp

    Filesize

    5.7MB

  • memory/1400-12-0x0000000000610000-0x0000000000650000-memory.dmp

    Filesize

    256KB

  • memory/1400-14-0x0000000074530000-0x0000000074ADB000-memory.dmp

    Filesize

    5.7MB

  • memory/1400-15-0x0000000000610000-0x0000000000650000-memory.dmp

    Filesize

    256KB

  • memory/1992-0-0x0000000074530000-0x0000000074ADB000-memory.dmp

    Filesize

    5.7MB

  • memory/1992-1-0x0000000074530000-0x0000000074ADB000-memory.dmp

    Filesize

    5.7MB

  • memory/1992-2-0x0000000000260000-0x00000000002A0000-memory.dmp

    Filesize

    256KB

  • memory/1992-11-0x0000000074530000-0x0000000074ADB000-memory.dmp

    Filesize

    5.7MB