Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    09/11/2020, 19:52

General

  • Target
    c5ca39215eddb502405c7c3862264601.exe
  • Size 880KB
  • Sample201109-ddvlbehdja
  • SHA256 26448f5f651589c5fd39721e68693c8eba2ada59eee363b365b984e90f0a47b0
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Family
  • remcos

C2
  • 37.1.222.252:5851

Signatures

  • Remcos

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

  • Blacklisted process makes network request 5 IoCs
  • Drops file in Windows directory 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 168 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c5ca39215eddb502405c7c3862264601.exe
    "C:\Users\Admin\AppData\Local\Temp\c5ca39215eddb502405c7c3862264601.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4756
    • C:\Windows\SysWOW64\extrac32.exe
      "C:\Windows\system32\extrac32.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:5068
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe"
        3⤵
          PID:2088
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\system32\cmd.exe"
          3⤵
          • Blacklisted process makes network request
          • Drops file in Windows directory
          • Suspicious use of SetWindowsHookEx
          PID:436

    Network

          MITRE ATT&CK Matrix

          Replay Monitor

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          Downloads

          memory/436-4-0x0000000000400000-0x0000000000420000-memory.dmp

          memory/5068-1-0x0000000006D00000-0x0000000006D35000-memory.dmp

          memory/5068-2-0x0000000007600000-0x0000000007620000-memory.dmp