Analysis

  • max time kernel
    142s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20220715-en
  • resource tags

    arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system
  • submitted
    25-07-2022 19:08

General

  • Target

    547de042b0d669e8aa2289fa898f6ba96d8eb7c679dffa79a02886d6ea31a393.exe

  • Size

    127KB

  • MD5

    13213a79eb7a7d4c931bc81c9fa63038

  • SHA1

    0983c3f1fdde9fd1aafb9b0fd637db424f88bc10

  • SHA256

    547de042b0d669e8aa2289fa898f6ba96d8eb7c679dffa79a02886d6ea31a393

  • SHA512

    44dfea2294b494f83668c99f300bcaca253d96ac3e1920f89e1c57fd35c8c6772f5bbdf93e5dd8caca94a445ec573862f435f87350e7b740ac03b85db864ced9

Malware Config

Extracted

Family

remcos

Version

2.0.5 Pro

Botnet

RemoteHost

C2

79.172.242.28:2404

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

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-6PPTSU

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

Signatures

  • Remcos

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\547de042b0d669e8aa2289fa898f6ba96d8eb7c679dffa79a02886d6ea31a393.exe
    "C:\Users\Admin\AppData\Local\Temp\547de042b0d669e8aa2289fa898f6ba96d8eb7c679dffa79a02886d6ea31a393.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:288
    • C:\Users\Admin\AppData\Local\Temp\547de042b0d669e8aa2289fa898f6ba96d8eb7c679dffa79a02886d6ea31a393.exe
      "C:\Users\Admin\AppData\Local\Temp\547de042b0d669e8aa2289fa898f6ba96d8eb7c679dffa79a02886d6ea31a393.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2012
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        3⤵
          PID:1496

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    1
    T1112

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/288-54-0x0000000000C70000-0x0000000000C94000-memory.dmp
      Filesize

      144KB

    • memory/288-55-0x0000000076191000-0x0000000076193000-memory.dmp
      Filesize

      8KB

    • memory/288-56-0x0000000000330000-0x0000000000338000-memory.dmp
      Filesize

      32KB

    • memory/2012-57-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/2012-58-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/2012-60-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/2012-62-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/2012-63-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/2012-64-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/2012-65-0x0000000000412C84-mapping.dmp
    • memory/2012-68-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/2012-69-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB