Analysis

  • max time kernel
    136s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    21-04-2021 13:35

General

  • Target

    40e678e7d38a1541c06d16895d75f856.exe

  • Size

    774KB

  • MD5

    40e678e7d38a1541c06d16895d75f856

  • SHA1

    5faee553c8dc1cc0492d7b8b78329ac56100c040

  • SHA256

    7aa6ba1ed3e72514eac19d8b9ee4f95a17e33b63159bc75bd57ad8b38ce6361e

  • SHA512

    4abce8638860dc80ec23516aba60cd1c87a66c8a98fb62730e042a8f78841afe45fd2c021f15395a06eb0b4b4e6a95809ce0d8d6806f95c2cc516caa7362be22

Malware Config

Extracted

Family

xpertrat

Version

3.0.10

Botnet

XXX

C2

kapasky-antivirus.firewall-gateway.net:2054

kapasky-antivirus.firewall-gateway.net:4000

Mutex

U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7

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
  • 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 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\40e678e7d38a1541c06d16895d75f856.exe
    "C:\Users\Admin\AppData\Local\Temp\40e678e7d38a1541c06d16895d75f856.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1820
    • C:\Users\Admin\AppData\Local\Temp\40e678e7d38a1541c06d16895d75f856.exe
      "{path}"
      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:668
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        C:\Users\Admin\AppData\Local\Temp\40e678e7d38a1541c06d16895d75f856.exe
        3⤵
          PID:864
        • C:\Program Files (x86)\Internet Explorer\iexplore.exe
          C:\Users\Admin\AppData\Local\Temp\40e678e7d38a1541c06d16895d75f856.exe
          3⤵
          • Adds policy Run key to start application
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:1156

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    2
    T1060

    Privilege Escalation

    Bypass User Account Control

    1
    T1088

    Defense Evasion

    Bypass User Account Control

    1
    T1088

    Disabling Security Tools

    3
    T1089

    Modify Registry

    6
    T1112

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/668-66-0x0000000000400000-0x000000000042C000-memory.dmp
      Filesize

      176KB

    • memory/668-67-0x00000000004010B8-mapping.dmp
    • memory/864-70-0x0000000000400000-0x0000000000443000-memory.dmp
      Filesize

      268KB

    • memory/864-71-0x0000000000401364-mapping.dmp
    • memory/1156-74-0x0000000000401364-mapping.dmp
    • memory/1156-75-0x00000000007B0000-0x0000000000903000-memory.dmp
      Filesize

      1.3MB

    • memory/1156-78-0x0000000076641000-0x0000000076643000-memory.dmp
      Filesize

      8KB

    • memory/1820-60-0x0000000000DC0000-0x0000000000DC1000-memory.dmp
      Filesize

      4KB

    • memory/1820-62-0x0000000004BF0000-0x0000000004BF1000-memory.dmp
      Filesize

      4KB

    • memory/1820-63-0x0000000000260000-0x000000000026E000-memory.dmp
      Filesize

      56KB

    • memory/1820-64-0x00000000057E0000-0x00000000058A5000-memory.dmp
      Filesize

      788KB

    • memory/1820-65-0x00000000058B0000-0x0000000005927000-memory.dmp
      Filesize

      476KB