Resubmissions

21-01-2025 11:18

250121-nef6aa1jfx 10

Analysis

  • max time kernel
    153s
  • max time network
    19s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    21-01-2025 11:18

General

  • Target

    4c40337094cf0bb86fad86d2ea724ac6e6a499f0acd877839a69d35c354a7792.exe

  • Size

    2.2MB

  • MD5

    05b8f1d7c18fe35533949d3b3ae5c726

  • SHA1

    581171a5941b4231548331b16b2342b50616dd23

  • SHA256

    4c40337094cf0bb86fad86d2ea724ac6e6a499f0acd877839a69d35c354a7792

  • SHA512

    f0effe37b6097d286ba67f44da82847a56c0b933166bb4904cc75db074ad11152bd06b80733c927e55ddac84a335ff764ac8cf3d5eccdd11079f2e0162476ea5

  • SSDEEP

    49152:ob33xSNudSRZpWod7tOvJOHdi1PXdFs0KinlZ4PCLRn:ooRRt6udqr

Malware Config

Extracted

Family

remcos

Version

4.9.3 Light

Botnet

RemoteHost

C2

127.0.0.1:2404

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

    remcos

  • mouse_option

    false

  • mutex

    Rmc-52SPIJ

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Remcos family
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4c40337094cf0bb86fad86d2ea724ac6e6a499f0acd877839a69d35c354a7792.exe
    "C:\Users\Admin\AppData\Local\Temp\4c40337094cf0bb86fad86d2ea724ac6e6a499f0acd877839a69d35c354a7792.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2076
    • C:\Users\Admin\AppData\Local\Temp\4c40337094cf0bb86fad86d2ea724ac6e6a499f0acd877839a69d35c354a7792.exe
      "C:\Users\Admin\AppData\Local\Temp\4c40337094cf0bb86fad86d2ea724ac6e6a499f0acd877839a69d35c354a7792.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2972

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2076-1-0x0000000000407000-0x0000000000421000-memory.dmp

    Filesize

    104KB

  • memory/2076-2-0x0000000000400000-0x000000000064D000-memory.dmp

    Filesize

    2.3MB

  • memory/2076-0-0x0000000000400000-0x000000000064D000-memory.dmp

    Filesize

    2.3MB

  • memory/2076-3-0x0000000000400000-0x000000000064D000-memory.dmp

    Filesize

    2.3MB

  • memory/2076-4-0x0000000000400000-0x000000000064D000-memory.dmp

    Filesize

    2.3MB

  • memory/2076-12-0x0000000000400000-0x000000000064D000-memory.dmp

    Filesize

    2.3MB

  • memory/2076-11-0x0000000000407000-0x0000000000421000-memory.dmp

    Filesize

    104KB

  • memory/2972-9-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2972-5-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-14-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-15-0x0000000000400000-0x000000000064D000-memory.dmp

    Filesize

    2.3MB

  • memory/2972-16-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-18-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-17-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-19-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-20-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-21-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-22-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-23-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-24-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-25-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-26-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-27-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-28-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-29-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-30-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-31-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-32-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-33-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-34-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-35-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-36-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-37-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-38-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-39-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-40-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-41-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-42-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-43-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-44-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-45-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-46-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-47-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-48-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-49-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-50-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-51-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-52-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-53-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-54-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-55-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-56-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-57-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-58-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-59-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-60-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-61-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-62-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-63-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-64-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-65-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-66-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-67-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-68-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-69-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB

  • memory/2972-70-0x00000000000B0000-0x0000000000125000-memory.dmp

    Filesize

    468KB