General

  • Target

    Deposit Confirmation.xls

  • Size

    74KB

  • Sample

    211014-smbmzshhh4

  • MD5

    7a149796e5ba1764a214148af241d33c

  • SHA1

    a3b9d39fafbb8eba99ef7d313b2963078a95a80c

  • SHA256

    7bdc1c4d7eb4471e5dcf71713b266066df99928f7be8732bfb36fe153f0f5e80

  • SHA512

    35657865ddc2835915073e0bba5e5bbc9e42af6f08afbab6d6572d9c3c90dbd880ff21a51ccfe37c4baed1a8b8005354aafe8fc0baa597d3a8ad812c742ceea9

Malware Config

Extracted

Language
ps1
Source
URLs
exe.dropper

http://greenpayindia.com/wp-conternt/ConsoleApp18.exe

Extracted

Family

remcos

Version

3.3.0 Pro

Botnet

RemoteHost

C2

lplazadtemins.duckdns.org:443

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • 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

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-NLSDTO

  • 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

    notepad;solitaire;

Targets

    • Target

      Deposit Confirmation.xls

    • Size

      74KB

    • MD5

      7a149796e5ba1764a214148af241d33c

    • SHA1

      a3b9d39fafbb8eba99ef7d313b2963078a95a80c

    • SHA256

      7bdc1c4d7eb4471e5dcf71713b266066df99928f7be8732bfb36fe153f0f5e80

    • SHA512

      35657865ddc2835915073e0bba5e5bbc9e42af6f08afbab6d6572d9c3c90dbd880ff21a51ccfe37c4baed1a8b8005354aafe8fc0baa597d3a8ad812c742ceea9

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Remcos

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

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Tasks