General

  • Target

    order.scr

  • Size

    943KB

  • Sample

    220803-fzav1agehj

  • MD5

    d898ec314df386d53273beae1740c7f9

  • SHA1

    48129f3aa13df929f1cb8ed23980eb350473d637

  • SHA256

    e78e1baff2d7a3f921993ef1537adbed0b4cead4154cc42c2bd760ace1dce46f

  • SHA512

    89acf578e9c40eb83e053d220c3793dacaa5bfb6fa5a7ea7b9ed8a33d5c0962dfe771c1e5f34605b86fa7a384decff22c42dd7cb8a48b98388aa0cd667917bc6

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

www.varshtrade.com: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

    notepad

  • mouse_option

    false

  • mutex

    notepad-TFQMB3

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      order.scr

    • Size

      943KB

    • MD5

      d898ec314df386d53273beae1740c7f9

    • SHA1

      48129f3aa13df929f1cb8ed23980eb350473d637

    • SHA256

      e78e1baff2d7a3f921993ef1537adbed0b4cead4154cc42c2bd760ace1dce46f

    • SHA512

      89acf578e9c40eb83e053d220c3793dacaa5bfb6fa5a7ea7b9ed8a33d5c0962dfe771c1e5f34605b86fa7a384decff22c42dd7cb8a48b98388aa0cd667917bc6

    • 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.

    • ModiLoader Second Stage

    • Checks computer location settings

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

    • Adds Run key to start application

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Tasks