Analysis

  • max time kernel
    2s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    06/06/2024, 04:05

General

  • Target
    99ee0418de617c85ea8215ce2ae8a164_JaffaCakes118.exe
  • Size 263KB
  • Sample240606-en2c5shc39
  • SHA256 2c0fa3a9dab65c98761b885d2196580af6605c7a9677608fb807758efb8f4786
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Version
  • 2.3.0 Pro

Botnet
  • RemoteHost

C2
  • top.smartphonesjo.waw.pl:2404

  • sub.josmartphones.waw.pl:2405

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    3

  • copy_file

    windowsupdater.exe

  • copy_folder

    AppData

  • delete_file

    true

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    updaterwin.dat

  • keylog_flag

    false

  • keylog_folder

    System32

  • keylog_path

    %Temp%

  • mouse_option

    false

  • mutex

    Remcos-3YHS56

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    WindowsAUD

  • screenshot_path

    %WinDir%\System32

  • screenshot_time

    10

  • startup_value

    WIndows

  • take_screenshot_option

    true

  • take_screenshot_time

    2

  • take_screenshot_title

    checkout,cart,shopping,credit card;bank;carte credit;banque;facture;bill;bitcoin; wallet; royal bank of canada; bank of montreal; cibc; td; rbc; bmo; scotia bank; banque scotia; monero; ltc; cryptowallet;binance;ltc;btc;ethereum;eth;litecoin;credit union;payment;cvv;exp;expiration;card number;desjardins;scotia;scotia bank;rbc;royal;royal bank;royalbank;security code,info,

Signatures

  • Remcos

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

  • Deletes itself 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\99ee0418de617c85ea8215ce2ae8a164_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\99ee0418de617c85ea8215ce2ae8a164_JaffaCakes118.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1132
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
      2⤵
      • Deletes itself
      PID:3052
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\AppData\windowsupdater.exe"
        3⤵
          PID:2320
          • C:\Users\Admin\AppData\Roaming\AppData\windowsupdater.exe
            C:\Users\Admin\AppData\Roaming\AppData\windowsupdater.exe
            4⤵
              PID:2572
              • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
                5⤵
                  PID:2584
                • C:\Windows\SysWOW64\svchost.exe
                  C:\Windows\SysWOW64\svchost.exe
                  5⤵
                    PID:2732

          Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                install.vbs

                • Path C:\Users\Admin\AppData\Local\Temp\install.vbs
                • Size 640B
                • SHA256 c87e2761ba5e53889eac72552926423f77332ad0d040fc2611e4462d8a744c1c
                • MD5 SHA1 SHA512

                windowsupdater.exe

                • Path C:\Users\Admin\AppData\Roaming\AppData\windowsupdater.exe
                • Size 263KB
                • SHA256 2c0fa3a9dab65c98761b885d2196580af6605c7a9677608fb807758efb8f4786
                • MD5 SHA1 SHA512 SSDEEP

                memory/1132-0-0x0000000000400000-0x0000000002028000-memory.dmp

                memory/1132-2-0x0000000002110000-0x0000000002210000-memory.dmp

                memory/1132-6-0x0000000000400000-0x0000000000420000-memory.dmp

                memory/1132-10-0x0000000000400000-0x0000000000420000-memory.dmp

                memory/1132-9-0x0000000000400000-0x0000000002028000-memory.dmp

                memory/2572-24-0x0000000000400000-0x0000000002028000-memory.dmp

                memory/2572-28-0x0000000000400000-0x0000000002028000-memory.dmp

                memory/2572-23-0x0000000000400000-0x0000000002028000-memory.dmp

                memory/2572-15-0x0000000000400000-0x0000000002028000-memory.dmp

                memory/2572-25-0x0000000000400000-0x0000000002028000-memory.dmp

                memory/2572-26-0x0000000000400000-0x0000000002028000-memory.dmp

                memory/2572-27-0x0000000000400000-0x0000000002028000-memory.dmp

                memory/2572-20-0x0000000000400000-0x0000000002028000-memory.dmp

                memory/2572-29-0x0000000000400000-0x0000000002028000-memory.dmp

                memory/2572-30-0x0000000000400000-0x0000000002028000-memory.dmp

                memory/2572-31-0x0000000000400000-0x0000000002028000-memory.dmp

                memory/2572-32-0x0000000000400000-0x0000000002028000-memory.dmp

                memory/2572-33-0x0000000000400000-0x0000000002028000-memory.dmp

                memory/2572-34-0x0000000000400000-0x0000000002028000-memory.dmp

                memory/2572-35-0x0000000000400000-0x0000000002028000-memory.dmp