Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-08-2024 04:06

General

  • Target

    FTE98767800000.bat.exe

  • Size

    1.4MB

  • MD5

    e418c8ddea38739c5fa4e6ee469ffd47

  • SHA1

    52ee59d5c7d3768056ac7809aea362e8adbeaa74

  • SHA256

    8fcca28a02a116ed9c02bfdcbe3bfb47206592110805aaeda4ad5c55aba82a74

  • SHA512

    3879b2ff0821511222cd9de8dc369037df52f655c2be937c4499cd9006049ed3a671c6ccd33f0adfa499aec935e14e388449574b5f282e6f5a230993b9192128

  • SSDEEP

    12288:0EOm/U97V194bWub1V5jdJislsmq/aWPNUEFkWsnFvM1XcCDB6iCuIgWPm3A5kIo:m9B19g5V5nxsmqaWPaEXsnfCPu6BH

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

192.210.150.26:8787

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-Q4NYK2

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • UAC bypass 3 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 3 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Windows security modification 2 TTPs 3 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\FTE98767800000.bat.exe
    "C:\Users\Admin\AppData\Local\Temp\FTE98767800000.bat.exe"
    1⤵
    • UAC bypass
    • Windows security bypass
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Checks computer location settings
    • Windows security modification
    • Checks whether UAC is enabled
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:2784
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\FTE98767800000.bat.exe" -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4980
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4864
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe /stext "C:\Users\Admin\AppData\Local\Temp\oclvtahzolezzjvcx"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:2816
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe /stext "C:\Users\Admin\AppData\Local\Temp\ywqousasctwdcprggnvsp"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:1500
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe /stext "C:\Users\Admin\AppData\Local\Temp\ayvynlluqcoqmwfkxyqlsorm"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4144
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
      2⤵
        PID:2196

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\remcos\logs.dat

      Filesize

      144B

      MD5

      bb0adab5629c444c7b72b8a6af556be7

      SHA1

      080c68a9c92485e1983f1999667355ba56a0905c

      SHA256

      d750675613f95484290a35cc019b9d959a981b512ad1fb7d182a7f4462190700

      SHA512

      92edfacda360e79f1b7117c7502ce34dbf44ae5e059851fb0b2f1989c2c85276f9264f3c395ffc89d6a4f9637cc286a9bc9e732633a7aa739f6ed495c1318aef

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jdqymatg.aeq.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\oclvtahzolezzjvcx

      Filesize

      4KB

      MD5

      a7e181f6aa185be0ab0ca68b30406fe6

      SHA1

      58c86162658dc609615b8b6400f85c92506dfdc8

      SHA256

      c3071dc55b94db225d9c0f2c1b21c7e8f27dbfd168b85b7d618d8d19950e7ff2

      SHA512

      49969eb10e0bf7925940eb7374451f811658ef9ccfb83b86fb337c4d06c3ba17eb0181f598d9e0ec9ca25bfaf644209ac47b73d62ac924e73d03a4dcf8f8dd0f

    • memory/1500-44-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/1500-38-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/1500-40-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/2784-0-0x0000020CFA830000-0x0000020CFA83C000-memory.dmp

      Filesize

      48KB

    • memory/2784-2-0x00007FF9FEBA0000-0x00007FF9FF661000-memory.dmp

      Filesize

      10.8MB

    • memory/2784-3-0x0000020CFCE30000-0x0000020CFCF00000-memory.dmp

      Filesize

      832KB

    • memory/2784-33-0x00007FF9FEBA0000-0x00007FF9FF661000-memory.dmp

      Filesize

      10.8MB

    • memory/2784-1-0x00007FF9FEBA3000-0x00007FF9FEBA5000-memory.dmp

      Filesize

      8KB

    • memory/2816-45-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2816-39-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2816-37-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/4144-42-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4144-41-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4144-43-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4864-56-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-60-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-31-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-32-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-29-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-35-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-91-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-25-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-90-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-82-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-83-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-75-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-8-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-12-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-11-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-6-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-51-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/4864-54-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/4864-55-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/4864-5-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-57-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-58-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-30-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-4-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-66-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-67-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4864-74-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4980-7-0x00007FF9FEBA0000-0x00007FF9FF661000-memory.dmp

      Filesize

      10.8MB

    • memory/4980-13-0x00007FF9FEBA0000-0x00007FF9FF661000-memory.dmp

      Filesize

      10.8MB

    • memory/4980-20-0x00000285F46B0000-0x00000285F46D2000-memory.dmp

      Filesize

      136KB

    • memory/4980-24-0x00007FF9FEBA0000-0x00007FF9FF661000-memory.dmp

      Filesize

      10.8MB

    • memory/4980-28-0x00007FF9FEBA0000-0x00007FF9FF661000-memory.dmp

      Filesize

      10.8MB