Analysis

  • max time kernel
    148s
  • max time network
    133s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    06-10-2021 08:13

General

  • Target

    1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215.exe

  • Size

    60KB

  • MD5

    533fe2e3602ede540e261fef7e04b711

  • SHA1

    945e2931b4ca160f9f3025e740cc19e75db25bf6

  • SHA256

    1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215

  • SHA512

    c43c0587b660b8f3a03d04e04c953c7ba5375dfec6f23de71e0bab7888e154216a8c38b9f422d854ef14483b6fac93874e0d5483634c7d6d6497088268453184

Malware Config

Extracted

Family

xpertrat

Version

3.0.10

Botnet

Test

C2

kapasky-antivirus.firewall-gateway.net:4000

Mutex

L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0

Signatures

  • UAC bypass 3 TTPs
  • Windows security bypass 2 TTPs
  • XpertRAT

    XpertRAT is a remote access trojan with various capabilities.

  • XpertRAT Core Payload 2 IoCs
  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Deletes itself 1 IoCs
  • Windows security modification 2 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215.exe
    "C:\Users\Admin\AppData\Local\Temp\1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2352
    • C:\Users\Admin\AppData\Local\Temp\1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215.exe
      C:\Users\Admin\AppData\Local\Temp\1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215.exe
      2⤵
      • Windows security modification
      • Checks whether UAC is enabled
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:3020
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        C:\Users\Admin\AppData\Local\Temp\1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215.exe
        3⤵
        • Adds policy Run key to start application
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4084
        • C:\Windows\SysWOW64\notepad.exe
          notepad.exe
          4⤵
          • Deletes itself
          PID:968

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/968-133-0x0000000000000000-mapping.dmp

  • memory/2352-115-0x0000000000080000-0x0000000000081000-memory.dmp

    Filesize

    4KB

  • memory/2352-117-0x0000000004A50000-0x0000000004A51000-memory.dmp

    Filesize

    4KB

  • memory/2352-118-0x00000000058D0000-0x00000000059AF000-memory.dmp

    Filesize

    892KB

  • memory/2352-119-0x0000000005B30000-0x0000000005B60000-memory.dmp

    Filesize

    192KB

  • memory/3020-120-0x0000000000400000-0x000000000042C000-memory.dmp

    Filesize

    176KB

  • memory/3020-121-0x00000000004010B8-mapping.dmp

  • memory/3020-132-0x0000000000400000-0x000000000042C000-memory.dmp

    Filesize

    176KB

  • memory/4084-124-0x0000000000400000-0x0000000000443000-memory.dmp

    Filesize

    268KB

  • memory/4084-125-0x0000000000401364-mapping.dmp

  • memory/4084-128-0x0000000003670000-0x00000000037C3000-memory.dmp

    Filesize

    1.3MB

  • memory/4084-129-0x0000000003671000-0x000000000376D000-memory.dmp

    Filesize

    1008KB