Analysis

  • max time kernel
    137s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10v200430
  • submitted
    21/07/2020, 06:09

General

  • Target
    SBIN32000636990,pdf.scr
  • Size 1.1MB
  • Sample200721-jfhrmgjsma
  • SHA256 ece26faace5bcf7afeba359279d17aeb7f99f739fce454e964c88ebad9745bdb
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Drops file in Program Files directory 1 IoCs
  • Netwire

    Netwire is a RAT with main functionalities focused password stealing and keylogging, but also includes remote control capabilities as well.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of WriteProcessMemory 501 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • NetWire RAT payload 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SBIN32000636990,pdf.scr
    "C:\Users\Admin\AppData\Local\Temp\SBIN32000636990,pdf.scr" /S
    1⤵
    • Suspicious use of WriteProcessMemory
    • Suspicious use of SetThreadContext
    • Adds Run key to start application
    PID:2564
    • C:\Windows\SysWOW64\TapiUnattend.exe
      "C:\Windows\System32\TapiUnattend.exe"
      2⤵
        PID:2420
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c C:\Users\Public\Natso.bat
          3⤵
            PID:1368
        • C:\Program Files (x86)\internet explorer\ieinstal.exe
          "C:\Program Files (x86)\internet explorer\ieinstal.exe"
          2⤵
          • Drops file in Program Files directory
          PID:3852

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            memory/2564-124-0x0000000050480000-0x00000000504C0000-memory.dmp

            memory/3852-127-0x0000000000400000-0x0000000000433000-memory.dmp

            memory/3852-129-0x0000000000400000-0x0000000000433000-memory.dmp