Overview

overview

10

Static

static

1

f5734ae475...dd.lnk

windows7-x64

3

f5734ae475...dd.lnk

windows10-2004-x64

10

Sharing

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General

  • Target

    f5734ae475931dbb561fc5b636d5a7825d8d99efa8d4d9cdff7e89bf163613dd.lnk

  • Size

    1KB

  • Sample

    240926-c6f4tasgqm

  • MD5

    9ee2b12e8974f00111bb9887f7f9e19f

  • SHA1

    54d2830260e949b25d291c07ebc6d29d8b4f0af8

  • SHA256

    f5734ae475931dbb561fc5b636d5a7825d8d99efa8d4d9cdff7e89bf163613dd

  • SHA512

    4d872cdd7c8428cd3b73f1664ffcc0380fe0171fc172b0262c6d8f9bd6d4e0679fd81387cc3d75cab7c04afc518c99b514459a98e082550edd3d7be3edb69c1c

Score
10/10
remcosback-septemberdiscoveryrat

Malware Config

Extracted

Family

remcos

Botnet

Back-September

C2

fullimmersion777.com:8090

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    hello.exe

  • copy_folder

    windw

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    rimcsl-94LESJ

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      f5734ae475931dbb561fc5b636d5a7825d8d99efa8d4d9cdff7e89bf163613dd.lnk

    • Size

      1KB

    • MD5

      9ee2b12e8974f00111bb9887f7f9e19f

    • SHA1

      54d2830260e949b25d291c07ebc6d29d8b4f0af8

    • SHA256

      f5734ae475931dbb561fc5b636d5a7825d8d99efa8d4d9cdff7e89bf163613dd

    • SHA512

      4d872cdd7c8428cd3b73f1664ffcc0380fe0171fc172b0262c6d8f9bd6d4e0679fd81387cc3d75cab7c04afc518c99b514459a98e082550edd3d7be3edb69c1c

    Score
    10/10
    remcosback-septemberdiscoveryrat

    • Remcos

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

      ratremcos

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks