General

  • Target

    d1a3e9d965809db746d3dbe909753f38e2073737347cc8d5714c78969b352d06.gz

  • Size

    892KB

  • Sample

    240327-c6p2qadh7v

  • MD5

    bcbe4adf7b06076746c760a71cef2739

  • SHA1

    cd1189ca19ca8f44b2b13c754923ac1c26ad9c83

  • SHA256

    d1a3e9d965809db746d3dbe909753f38e2073737347cc8d5714c78969b352d06

  • SHA512

    88e4f1d0042a7a74b39be281df64b074a4461bcd2eeb6e168c8d7a740f59f0eb466fca15cfdba160c11758f58bccf948d29146a7389da98a7afbb5ad3a3e37ee

  • SSDEEP

    24576:51KuecLClzX2f20Hn43Vl34oBMoMHawFfrxsdpE:zKmL4zX2fhHnwH4IlMHaOsdpE

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

127.0.0.1:45671

127.0.0.1:55677

192.3.101.8:55677

192.3.101.8:45671

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-2P1XPK

  • 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

      DEBIT_ADVICE_000610PAY001522024.PDF.bat

    • Size

      3.1MB

    • MD5

      37a23ddeb4d10dc479c3cda8bcad8fa6

    • SHA1

      8cf2add3ffd2840c508bd8b06f9a29d9a4fb7bf5

    • SHA256

      0a2ae63e384bb787bfaf113777640ad36ce8aabc235fd071de1cc746f32c1701

    • SHA512

      aae48f4509124f6e041e96a32da0071727244d909b84b5189fd153a74f07a5dc208f4e46b98166d0aa9b25c19277796c8c01f4faaec793c95c8c03b83ef05bba

    • SSDEEP

      24576:2wyJPcV/Hrrz6jT6vaQrAAAy4QE1FpVJQQul6kE82zg38H6HKpLJrvvfzrEZnfQL:9yJPcVHQNQrAAHEPJQT7Z38dEog3xfO

    • ModiLoader, DBatLoader

      ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

    • Remcos

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

    • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)

    • Detects executables built or packed with MPress PE compressor

    • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

    • Detects executables referencing many email and collaboration clients. Observed in information stealers

    • ModiLoader Second Stage

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Nirsoft

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Accesses Microsoft Outlook accounts

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks