General

  • Target

    850b58f504324b3aec9b262ae4224cee37f731f90b30bdf0b0ee0f9a46d6964d.exe

  • Size

    452KB

  • Sample

    240429-btb4naef4x

  • MD5

    4c27395437d1880531cb727194221bb8

  • SHA1

    4161da11bf2da8ed83b721ee1d72ea9c3a0e0d9f

  • SHA256

    850b58f504324b3aec9b262ae4224cee37f731f90b30bdf0b0ee0f9a46d6964d

  • SHA512

    f62b1f7b0b1b4cb17b11973e601dcb58227911a6b52d9c34a3edb4ef7b0349dc35835df570d0b9534a379cd1fb41b198eb9432c73c6354dea13e8dbcee30e22e

  • SSDEEP

    6144:rOrXOdV6MDOrctj6AwnV3NPYvEmAYc42VBPg1BwnFo7s4lB:rGO0r5AwlqvExYh0g1MKI4lB

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.150

Attributes
  • url_path

    /c698e1bc8a2f5e6d.php

Targets

    • Target

      850b58f504324b3aec9b262ae4224cee37f731f90b30bdf0b0ee0f9a46d6964d.exe

    • Size

      452KB

    • MD5

      4c27395437d1880531cb727194221bb8

    • SHA1

      4161da11bf2da8ed83b721ee1d72ea9c3a0e0d9f

    • SHA256

      850b58f504324b3aec9b262ae4224cee37f731f90b30bdf0b0ee0f9a46d6964d

    • SHA512

      f62b1f7b0b1b4cb17b11973e601dcb58227911a6b52d9c34a3edb4ef7b0349dc35835df570d0b9534a379cd1fb41b198eb9432c73c6354dea13e8dbcee30e22e

    • SSDEEP

      6144:rOrXOdV6MDOrctj6AwnV3NPYvEmAYc42VBPg1BwnFo7s4lB:rGO0r5AwlqvExYh0g1MKI4lB

    • Detect ZGRat V1

    • SectopRAT

      SectopRAT is a remote access trojan first seen in November 2019.

    • SectopRAT payload

    • Stealc

      Stealc is an infostealer written in C++.

    • ZGRat

      ZGRat is remote access trojan written in C#.

    • Detect binaries embedding considerable number of MFA browser extension IDs.

    • Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs.

    • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

    • Detects encrypted or obfuscated .NET executables

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • 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

    • Checks installed software on the system

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks