Overview

overview

10

Static

static

saturdaywork.exe

windows7_x64

10

saturdaywork.exe

windows10_x64

10

Analysis

  • max time kernel
    149s
  • max time network
    145s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    09/11/2020, 19:40

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General

  • Target
    saturdaywork.exe
  • Size 617KB
  • Sample201109-39nzqltaae
  • SHA256 035eaa4837d35a30fff60618e860e93811e6ad310ff606b65c3ccd71b78232cd
  • MD5 SHA1 SHA512
Score
10/10
remcosrat

Malware Config

Extracted

Family

  • remcos

C2

  • 185.140.53.69:1122

Signatures

  • Remcos

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

    ratremcos
  • Executes dropped EXE 2 IoCs
  • Drops startup file 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\saturdaywork.exe
    "C:\Users\Admin\AppData\Local\Temp\saturdaywork.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3984
    • C:\Windows\SysWOW64\notepad.exe
      "C:\Windows\system32\notepad.exe"
      2⤵
      • Drops startup file
      • NTFS ADS
      • Suspicious use of WriteProcessMemory
      PID:2188
      • C:\Users\Admin\AppData\Roaming\AppName\DxellXin.exe
        "C:\Users\Admin\AppData\Roaming\AppName\DxellXin.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:2616
        • C:\Users\Admin\AppData\Roaming\AppName\DxellXin.exe
          "C:\Users\Admin\AppData\Roaming\AppName\DxellXin.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetWindowsHookEx
          PID:2736

Network

        MITRE ATT&CK Matrix

        Replay Monitor

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        Downloads

        memory/2736-4-0x0000000000400000-0x0000000000420000-memory.dmp
        Download

        memory/2736-7-0x0000000000400000-0x0000000000420000-memory.dmp
        Download