Overview

overview

10

Static

static

8e34dbf3bc...e4.exe

windows7-x64

10

8e34dbf3bc...e4.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    8e34dbf3bceb9c9cf22f32ea7d870be4

  • Size

    149KB

  • Sample

    220824-y4ec4aafbm

  • MD5

    8e34dbf3bceb9c9cf22f32ea7d870be4

  • SHA1

    d9cd6c07ee134e10b179821808f617cdf2dc810b

  • SHA256

    74b1f33dc283a64df996251ad950a1c8bdba5ab77da45c97233972d2a8c17056

  • SHA512

    3ccb54fdd4dff867a760c11b94f147b503ffd015cd5d8ee11a86f6afa0cfb3fe3507420bf5d94ee85f7c6773e0aa58084b83b142aa54cf9baea4824438143b47

  • SSDEEP

    3072:J90Eg7YOC0q0vGBYovRDlDybNTPCtRqFvYs:1gYtvJDlmbRX

Score
10/10
remcos220825persistencerat

Malware Config

Extracted

Language
ps1
Source
URLs
exe.dropper

http://cothdesigns.com:443/obieznne.msi

Extracted

Language
ps1
Source
URLs
exe.dropper

http://cothdesigns.com:443/KMS_Tool.msi

Extracted

Family

remcos

Botnet

220825

C2

cothdesigns.com:3456

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    180

  • copy_file

    software_reporter_tool.exe

  • copy_folder

    AppData\Local\Google

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %UserProfile%

  • keylog_crypt

    true

  • keylog_file

    adbkey.dat

  • keylog_flag

    false

  • keylog_path

    %Temp%

  • mouse_option

    false

  • mutex

    9416a517bdcd8521-XQOB43

  • screenshot_crypt

    true

  • screenshot_flag

    true

  • screenshot_folder

    Google

  • screenshot_path

    %Temp%

  • screenshot_time

    60

  • startup_value

    Google

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Extracted

Language
ps1
Source
URLs
exe.dropper

http://cothdesigns.com:443/KMS_Tool.msi

Targets

    • Target

      8e34dbf3bceb9c9cf22f32ea7d870be4

    • Size

      149KB

    • MD5

      8e34dbf3bceb9c9cf22f32ea7d870be4

    • SHA1

      d9cd6c07ee134e10b179821808f617cdf2dc810b

    • SHA256

      74b1f33dc283a64df996251ad950a1c8bdba5ab77da45c97233972d2a8c17056

    • SHA512

      3ccb54fdd4dff867a760c11b94f147b503ffd015cd5d8ee11a86f6afa0cfb3fe3507420bf5d94ee85f7c6773e0aa58084b83b142aa54cf9baea4824438143b47

    • SSDEEP

      3072:J90Eg7YOC0q0vGBYovRDlDybNTPCtRqFvYs:1gYtvJDlmbRX

    Score
    10/10
    remcos220825persistencerat

    • Remcos

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

      ratremcos

    • Adds policy Run key to start application

      persistence

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Checks computer location settings

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

    • Adds Run key to start application

      persistence

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks