Analysis

  • max time kernel
    147s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-05-2024 04:37

General

  • Target

    69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe

  • Size

    435KB

  • MD5

    69bda55cf1a5f060d8d583646f986943

  • SHA1

    6c46cc4216bf9e2ab963ced691b0e9bce6a359d6

  • SHA256

    02dfbee0b56dd31315f9661286364a5575589577de2077423e59c7bed46bc4d7

  • SHA512

    2db813ba399bb7068dc132404fb08d8dd48bae6045dbb7db7222044598b85133227c3269b35112c56692e998d1ff7b1b00ac9e697039b79a241cabbd555d94a4

  • SSDEEP

    6144:6zYRHXOH+jso2yGB0bU0R+ZO6EzmzFlblw2:6zYRD4Izmzbb+

Score
10/10

Malware Config

Extracted

Family

remcos

Version

1.9.9 Pro

Botnet

Gold Farm

C2

fzsification.bounceme.net:9009

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

    true

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    log8498.bat

  • keylog_flag

    false

  • keylog_folder

    Windows Command Module

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Null-8WJKBY

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    remcos

  • take_screenshot_option

    true

  • take_screenshot_time

    5

  • take_screenshot_title

    coin;bitcoin;crypto;ethereum;litecoin;bitfinex;bittrex;coinbase;paypal;

Signatures

  • Remcos

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

  • Drops startup file 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1116
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe"
      2⤵
      • NTFS ADS
      • Suspicious use of WriteProcessMemory
      PID:4452
      • C:\Windows\SysWOW64\reg.exe
        reg add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows" /v Load /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\Pidgin\bird.exe.lnk" /f
        3⤵
          PID:3196
      • C:\Users\Admin\AppData\Local\Temp\svhost.exe
        "C:\Users\Admin\AppData\Local\Temp\svhost.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        PID:4804
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\Pidgin\bird.exe.bat
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1496
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 300
          3⤵
          • Delays execution with timeout.exe
          PID:1040

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\Pidgin\bird.exe
      Filesize

      435KB

      MD5

      69bda55cf1a5f060d8d583646f986943

      SHA1

      6c46cc4216bf9e2ab963ced691b0e9bce6a359d6

      SHA256

      02dfbee0b56dd31315f9661286364a5575589577de2077423e59c7bed46bc4d7

      SHA512

      2db813ba399bb7068dc132404fb08d8dd48bae6045dbb7db7222044598b85133227c3269b35112c56692e998d1ff7b1b00ac9e697039b79a241cabbd555d94a4

    • C:\Users\Admin\AppData\Local\Temp\Pidgin\bird.exe.bat
      Filesize

      203B

      MD5

      8924a4be6613e42b6f8065e9acfbe2e3

      SHA1

      ef1d5dedce26eb50f32ca3ebf5550f397aa5732f

      SHA256

      f6c2c759ec4c3a3ead6a4fae5f9da83f9581939180447dc3ad78b5bc7ecf94ec

      SHA512

      8f4f278852f7d50fa8ea9022997994d8f1971be1657f4a9c9c1163e7a61c0910e9b6224c0a27eea87500e6a91ae048d84b46141c0872d97649865fe984ee667c

    • C:\Users\Admin\AppData\Local\Temp\svhost.exe
      Filesize

      1.6MB

      MD5

      1c9ff7df71493896054a91bee0322ebf

      SHA1

      38f1c85965d58b910d8e8381b6b1099d5dfcbfe4

      SHA256

      e8b5da3394bbdd7868122ffd88d9d06afe31bd69d656857910d2f820c32d0efa

      SHA512

      aa0def62b663743e6c3c022182b35cff33cb9abf08453d5098f3c5d32b2a8b0cd1cc5de64b93e39680c1d1396fef1fd50b642ca3ea4ba1f6d1078321d96916ab

    • memory/1116-2-0x0000000075090000-0x0000000075641000-memory.dmp
      Filesize

      5.7MB

    • memory/1116-1-0x0000000075090000-0x0000000075641000-memory.dmp
      Filesize

      5.7MB

    • memory/1116-0-0x0000000075092000-0x0000000075093000-memory.dmp
      Filesize

      4KB

    • memory/1116-25-0x0000000075092000-0x0000000075093000-memory.dmp
      Filesize

      4KB

    • memory/1116-26-0x0000000075090000-0x0000000075641000-memory.dmp
      Filesize

      5.7MB

    • memory/1116-30-0x0000000075090000-0x0000000075641000-memory.dmp
      Filesize

      5.7MB

    • memory/4804-11-0x0000000000400000-0x000000000041E000-memory.dmp
      Filesize

      120KB

    • memory/4804-19-0x0000000000400000-0x000000000041E000-memory.dmp
      Filesize

      120KB

    • memory/4804-17-0x0000000000400000-0x000000000041E000-memory.dmp
      Filesize

      120KB

    • memory/4804-20-0x0000000000400000-0x000000000041E000-memory.dmp
      Filesize

      120KB