General

  • Target

    4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a.exe

  • Size

    347KB

  • Sample

    240428-bqn9tach36

  • MD5

    22ea99c3408e7c0f32fecf3391427a58

  • SHA1

    897335d05e4d3ed0cc8ae4591b2094f01b6cb369

  • SHA256

    4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a

  • SHA512

    28357a24e3649bf80352d0f6a62efe437a78f607900b9b6ef8d98978f74208b8c8c4c2f316be4765c655c51b071b3ab7884f96da6dd2e46c77dd83c20ef7f244

  • SSDEEP

    6144:ToBqFgnH6oK/xcYNKD8r+syjBJw45rtMLYC43J9fa7nxNHnKT:EawahCYgD8CsKJw4/MchjCnM

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.76

Attributes
  • url_path

    /8681490a59ad0e34.php

Targets

    • Target

      4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a.exe

    • Size

      347KB

    • MD5

      22ea99c3408e7c0f32fecf3391427a58

    • SHA1

      897335d05e4d3ed0cc8ae4591b2094f01b6cb369

    • SHA256

      4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a

    • SHA512

      28357a24e3649bf80352d0f6a62efe437a78f607900b9b6ef8d98978f74208b8c8c4c2f316be4765c655c51b071b3ab7884f96da6dd2e46c77dd83c20ef7f244

    • SSDEEP

      6144:ToBqFgnH6oK/xcYNKD8r+syjBJw45rtMLYC43J9fa7nxNHnKT:EawahCYgD8CsKJw4/MchjCnM

    • SectopRAT

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

    • SectopRAT payload

    • Stealc

      Stealc is an infostealer 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.

    • 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 Matrix ATT&CK v13

Credential Access

Unsecured Credentials

3
T1552

Credentials In Files

3
T1552.001

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

3
T1005

Tasks