Analysis

  • max time kernel
    62s
  • max time network
    129s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    08/11/2022, 15:02

General

  • Target
    3f5d2ca933f5c7cea6f55f14ebfd7d9f703ef2d9ba54ed8212aeda2d893c875b.exe
  • Size 970KB
  • Sample221108-seflzaegbl
  • SHA256 3f5d2ca933f5c7cea6f55f14ebfd7d9f703ef2d9ba54ed8212aeda2d893c875b
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • uyoman.duckdns.org:2404

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

    mum

  • mouse_option

    false

  • mutex

    Rmc-YKXMQC

  • 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

Signatures

  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • Remcos

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

  • ModiLoader Second Stage 29 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Program crash 1 IoCs
  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3f5d2ca933f5c7cea6f55f14ebfd7d9f703ef2d9ba54ed8212aeda2d893c875b.exe
    "C:\Users\Admin\AppData\Local\Temp\3f5d2ca933f5c7cea6f55f14ebfd7d9f703ef2d9ba54ed8212aeda2d893c875b.exe"
    1⤵
    • Adds Run key to start application
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1592
    • C:\Windows\SysWOW64\wscript.exe
      C:\Windows\System32\wscript.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1080
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1080 -s 376
        3⤵
        • Program crash
        PID:1284

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1080-93-0x0000000001FF0000-0x000000000206B000-memory.dmp

        memory/1080-92-0x0000000010590000-0x000000001060E000-memory.dmp

        memory/1080-66-0x0000000010590000-0x000000001060E000-memory.dmp

        memory/1592-75-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-77-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-57-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-64-0x0000000010590000-0x000000001060E000-memory.dmp

        memory/1592-65-0x0000000010590000-0x000000001060E000-memory.dmp

        memory/1592-60-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-68-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-70-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-69-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-72-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-73-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-74-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-71-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-54-0x0000000074FB1000-0x0000000074FB3000-memory.dmp

        memory/1592-76-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-61-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-78-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-80-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-81-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-86-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-59-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-88-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-82-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-85-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-84-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-83-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-79-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-90-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-91-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-89-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-58-0x0000000000500000-0x000000000052B000-memory.dmp

        memory/1592-55-0x0000000000500000-0x000000000052B000-memory.dmp