Analysis

  • max time kernel
    150s
  • max time network
    157s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    16/10/2020, 16:18

General

  • Target
    xNFUgCJB5e4SLEw.exe
  • Size 547KB
  • Sample201016-fxwv6t7msa
  • SHA256 1a1924da9d272ea46f8a0a62d7e2ecf01746e9a7621c8b1c36950788c3a3bd8c
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Family
  • remcos

C2
  • u875414.nvpn.to:2404

  • u875414.duckdns.org:2404

  • u875414.ddns.net:2404

  • u875414.nsupdate.info:2404

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Suspicious use of SetThreadContext 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\xNFUgCJB5e4SLEw.exe
    "C:\Users\Admin\AppData\Local\Temp\xNFUgCJB5e4SLEw.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1440
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rsFiZZLO" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEFDB.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1936
    • C:\Users\Admin\AppData\Local\Temp\xNFUgCJB5e4SLEw.exe
      "C:\Users\Admin\AppData\Local\Temp\xNFUgCJB5e4SLEw.exe"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:2004

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1440-0-0x00000000738C0000-0x0000000073FAE000-memory.dmp

        memory/1440-1-0x00000000009C0000-0x00000000009C1000-memory.dmp

        memory/1440-3-0x0000000000590000-0x000000000059B000-memory.dmp

        memory/1440-4-0x0000000004B10000-0x0000000004B62000-memory.dmp

        memory/1440-5-0x0000000002010000-0x0000000002033000-memory.dmp

        memory/2004-8-0x0000000000400000-0x0000000000421000-memory.dmp

        memory/2004-10-0x0000000000400000-0x0000000000421000-memory.dmp