Overview

overview

10

Static

static

1

RFQ-000753.xla.xls

windows7-x64

10

RFQ-000753.xla.xls

windows10-2004-x64

1

Sharing

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General

  • Target

    RFQ-000753.xla.xlsx

  • Size

    62KB

  • Sample

    240321-j968qsgf9t

  • MD5

    42d3837bf1dc78a79c488153d7ff0ca9

  • SHA1

    40dd20643ba58bb81a27c3be4c37c84cc6a2ce6f

  • SHA256

    d483c4f1670ea7a69f9cdbbf716e67f1511e271d485229566afaa67011304dd6

  • SHA512

    18b9ce199b52a66f7a3666226defaf4ecdecf4293e8fd7bd51f3896e1b0f24d7d7cbe6034a16fd8f43d6c9882888a9612f2b6d73b33dcffa309a6442d7f1373d

  • SSDEEP

    768:UyBP0/+sG1tzXyBP0nApAEhJrOawVkC43+1eaIqnxMsijgO4E9XFzd:U68/pG1tzX68ApAEzrOawaaZus04E9

Score
10/10
remcosremotehostcollectionpersistenceratspywarestealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

107.172.31.178:2404

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-NVSJ5U

  • 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

      RFQ-000753.xla.xlsx

    • Size

      62KB

    • MD5

      42d3837bf1dc78a79c488153d7ff0ca9

    • SHA1

      40dd20643ba58bb81a27c3be4c37c84cc6a2ce6f

    • SHA256

      d483c4f1670ea7a69f9cdbbf716e67f1511e271d485229566afaa67011304dd6

    • SHA512

      18b9ce199b52a66f7a3666226defaf4ecdecf4293e8fd7bd51f3896e1b0f24d7d7cbe6034a16fd8f43d6c9882888a9612f2b6d73b33dcffa309a6442d7f1373d

    • SSDEEP

      768:UyBP0/+sG1tzXyBP0nApAEhJrOawVkC43+1eaIqnxMsijgO4E9XFzd:U68/pG1tzX68ApAEzrOawaaZus04E9

    Score
    10/10
    remcosremotehostcollectionpersistenceratspywarestealer

    • Remcos

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

      ratremcos

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Nirsoft

    • Blocklisted process makes network request

    • Abuses OpenXML format to download file from external location

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Accesses Microsoft Outlook accounts

      collection

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks