General

  • Target

    random.exe

  • Size

    5.5MB

  • Sample

    250209-wzerysyph1

  • MD5

    37c4e41ce3559609ceefe055aa9e3769

  • SHA1

    5b9f125968ebd2c443db41b36749bda77994c850

  • SHA256

    469ffc6003c62eedd9ce91eb6c4cd073fee8cd222d464a1aa2fad689f10735e7

  • SHA512

    8722bde5e2393c0968987453d2cc7a102bdb8606a389abbf6e9dab4592acb379d710b349577415b5d4be242b12e4db2379b21cc0dbf4549742b02002e87931a3

  • SSDEEP

    98304:bvBlt/8OhEGv/dgQTuMwVPRFRYgL0mSL6oW9uxPVACqVoc3Iejp/if+h6/rlOSKR:bvBLfESSQTuzrRYgL0aoW9uxPVuJ4QZ5

Malware Config

Extracted

Family

amadey

Version

4.42

Botnet

9c9aa5

C2

http://185.215.113.43

Attributes
  • install_dir

    abc3bc1985

  • install_file

    skotes.exe

  • strings_key

    8a35cf2ea38c2817dba29a4b5b25dcf0

  • url_paths

    /Zu7JuNko/index.php

rc4.plain

Extracted

Family

stealc

Botnet

reno

C2

http://185.215.113.115

Attributes
  • url_path

    /c4becf79229cb002.php

Targets

    • Target

      random.exe

    • Size

      5.5MB

    • MD5

      37c4e41ce3559609ceefe055aa9e3769

    • SHA1

      5b9f125968ebd2c443db41b36749bda77994c850

    • SHA256

      469ffc6003c62eedd9ce91eb6c4cd073fee8cd222d464a1aa2fad689f10735e7

    • SHA512

      8722bde5e2393c0968987453d2cc7a102bdb8606a389abbf6e9dab4592acb379d710b349577415b5d4be242b12e4db2379b21cc0dbf4549742b02002e87931a3

    • SSDEEP

      98304:bvBlt/8OhEGv/dgQTuMwVPRFRYgL0mSL6oW9uxPVACqVoc3Iejp/if+h6/rlOSKR:bvBLfESSQTuzrRYgL0aoW9uxPVuJ4QZ5

    • Amadey

      Amadey bot is a simple trojan bot primarily used for collecting reconnaissance information.

    • Amadey family

    • Stealc

      Stealc is an infostealer written in C++.

    • Stealc family

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Downloads MZ/PE file

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Loads dropped DLL

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks