General

  • Target

    newbuttersmoothreversethings.tiff

  • Size

    178KB

  • Sample

    240826-lvqnjsyhjj

  • MD5

    93857bd5c5e192f479e7051139df21fa

  • SHA1

    7747a35042e6c7eff5919def4596a13d072e0075

  • SHA256

    326db3240e33e0b88cfdb88209e0a13ae340e98d81a2d7caabca5bbb8ddba1ca

  • SHA512

    111f2ccc0a94f1ff8ec3c6b73f160d080bc17cc4aac975ed7d8c883a73c7bccaef93bece25cb1f7583104f900eb18ecd8f6e4bed9932b69fe1746b9d6983ded5

  • SSDEEP

    3072:JxJKdhHVR3mxTsZTgt5p9GwjdDPCLZ+zDpMlrtpk8tiG:JxJ8VxmFXzDelxpttiG

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://ia803104.us.archive.org/27/items/vbs_20240726_20240726/vbs.jpg

exe.dropper

https://ia803104.us.archive.org/27/items/vbs_20240726_20240726/vbs.jpg

Extracted

Family

remcos

Botnet

RemoteHost

C2

45.90.89.98:8243

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

    true

  • install_flag

    false

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    loat

  • keylog_path

    %Temp%

  • mouse_option

    false

  • mutex

    Rmc-O0U3JA

  • 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

      newbuttersmoothreversethings.tiff

    • Size

      178KB

    • MD5

      93857bd5c5e192f479e7051139df21fa

    • SHA1

      7747a35042e6c7eff5919def4596a13d072e0075

    • SHA256

      326db3240e33e0b88cfdb88209e0a13ae340e98d81a2d7caabca5bbb8ddba1ca

    • SHA512

      111f2ccc0a94f1ff8ec3c6b73f160d080bc17cc4aac975ed7d8c883a73c7bccaef93bece25cb1f7583104f900eb18ecd8f6e4bed9932b69fe1746b9d6983ded5

    • SSDEEP

      3072:JxJKdhHVR3mxTsZTgt5p9GwjdDPCLZ+zDpMlrtpk8tiG:JxJ8VxmFXzDelxpttiG

    • Remcos

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

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Detected Nirsoft tools

      Free utilities often used by attackers which can steal passwords, product keys, etc.

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Checks computer location settings

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

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook accounts

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks