Analysis

  • max time kernel
    146s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    05/04/2024, 13:11

General

  • Target
    GST e-Payment Challan.exe
  • Size 548KB
  • Sample240405-qext5sde48
  • SHA256 2a0a27371b6f4d355c3264fcc668d8a0fe1af7ebb8b19dca3b5cdf20a3282d65
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Extracted

Family
  • remcos

Version
  • 1.7 Pro

Botnet
  • gg

C2
  • 62.102.148.185:9771

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    newstart

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_wgwfvnfssp

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

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

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\GST e-Payment Challan.exe
    "C:\Users\Admin\AppData\Local\Temp\GST e-Payment Challan.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1508
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\GST e-Payment Challan.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2432
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\oFkpbhjTJbn.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2720
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\oFkpbhjTJbn" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6D25.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2448
    • C:\Users\Admin\AppData\Local\Temp\GST e-Payment Challan.exe
      "C:\Users\Admin\AppData\Local\Temp\GST e-Payment Challan.exe"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:2476

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        tmp6D25.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmp6D25.tmp
        • Size 1KB
        • SHA256 5b19058ef60e97a732bd556f5370c93136fc48d0e21a03dd522499c094bc1b93
        • MD5 SHA1 SHA512

        95E9MUXTZAYKM1OE45IA.temp

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\95E9MUXTZAYKM1OE45IA.temp
        • Size 7KB
        • SHA256 897866d89b87128a260a3a274f7a45125a28e2855bf82602e52d130a7cd90300
        • MD5 SHA1 SHA512 SSDEEP

        memory/1508-3-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/1508-29-0x0000000074BD0000-0x00000000752BE000-memory.dmp

        memory/1508-4-0x0000000000830000-0x000000000083C000-memory.dmp

        memory/1508-5-0x0000000001000000-0x0000000001060000-memory.dmp

        memory/1508-6-0x0000000074BD0000-0x00000000752BE000-memory.dmp

        memory/1508-7-0x0000000000850000-0x0000000000890000-memory.dmp

        memory/1508-2-0x0000000000850000-0x0000000000890000-memory.dmp

        memory/1508-1-0x0000000074BD0000-0x00000000752BE000-memory.dmp

        memory/1508-0-0x0000000001230000-0x00000000012BE000-memory.dmp

        memory/2432-43-0x000000006EEF0000-0x000000006F49B000-memory.dmp

        memory/2432-40-0x0000000000440000-0x0000000000480000-memory.dmp

        memory/2432-37-0x000000006EEF0000-0x000000006F49B000-memory.dmp

        memory/2432-34-0x000000006EEF0000-0x000000006F49B000-memory.dmp

        memory/2476-48-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-52-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-25-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        memory/2476-30-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-31-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-60-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-24-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-59-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-35-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-23-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-58-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-57-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-22-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-41-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-21-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-56-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-44-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-45-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-20-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-49-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-50-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-51-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-27-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-53-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-54-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2476-55-0x0000000000400000-0x0000000000417000-memory.dmp

        memory/2720-42-0x000000006EEF0000-0x000000006F49B000-memory.dmp

        memory/2720-39-0x0000000002A20000-0x0000000002A60000-memory.dmp

        memory/2720-38-0x000000006EEF0000-0x000000006F49B000-memory.dmp

        memory/2720-36-0x0000000002A20000-0x0000000002A60000-memory.dmp

        memory/2720-32-0x000000006EEF0000-0x000000006F49B000-memory.dmp