Overview

overview

10

Static

static

3

Purchase O...43.exe

windows10-2004-x64

7

Purchase O...43.exe

windows11-21h2-x64

10

$PLUGINSDI...em.dll

windows10-2004-x64

3

$PLUGINSDI...em.dll

windows11-21h2-x64

3

$PLUGINSDI...gs.dll

windows10-2004-x64

3

$PLUGINSDI...gs.dll

windows11-21h2-x64

3

$PLUGINSDI...ec.dll

windows10-2004-x64

3

$PLUGINSDI...ec.dll

windows11-21h2-x64

3

Sharing

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General

  • Target
    Purchase Order-238643.exe
  • Size 688KB
  • Sample260520-gpd1caa19m
  • SHA256 8db47d7446c4f1d4d4ab99f0362f1dcdf1db0f4dbff396cfeaa567757fe91aab
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
remcosremotehostdiscoveryinstallerrat

Malware Config

Extracted

Family

  • remcos

Version

  • 7.2.5 Pro

Botnet

  • RemoteHost

C2

  • 85.17.192.128:2404

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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-LQ7LJ7

  • 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
      Purchase Order-238643.exe
    • Size 688KB
    • SHA256 8db47d7446c4f1d4d4ab99f0362f1dcdf1db0f4dbff396cfeaa567757fe91aab
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    discoveryremotehostremcosrat

    • Family: Remcos

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

      ratremcos

    • Loads dropped DLL

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1behavioral2
    • Target
      $PLUGINSDIR/System.dll
    • Size 11KB
    • SHA256 b80a5cba69d1853ed5979b0ca0352437bf368a5cfb86cb4528edadd410e11352
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    discovery
    behavioral3behavioral4
    • Target
      $PLUGINSDIR/nsDialogs.dll
    • Size 9KB
    • SHA256 5157fe688cca27d348171bd5a8b117de348c0844ca5cb82bc68cbd7d873a3fdc
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    discovery
    behavioral5behavioral6
    • Target
      $PLUGINSDIR/nsExec.dll
    • Size 6KB
    • SHA256 370e47364561fa501b1300b056fb53fae12b1639fdf5f113275bee03546081c0
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    discovery
    behavioral7behavioral8

MITRE ATT&CK Enterprise v16

Tasks