General

  • Target

    d562b3b44859f761645676e0c0e7daad1226c5b90f53b4fe5e5395bf77454ec7.exe

  • Size

    384KB

  • Sample

    240417-r35qbscf25

  • MD5

    3170aed3eb44bd638cce6f67650d4b50

  • SHA1

    22519afd371ed56fe6b4b4565534e09d0dd20453

  • SHA256

    d562b3b44859f761645676e0c0e7daad1226c5b90f53b4fe5e5395bf77454ec7

  • SHA512

    7e7c6289de619d06a7ca36fdb11d3d1a04e0913dffcfabac7af71213e2e8c54bb367ecf318b07e40b8734d3a7db92cb5de6f73e99caa9c254eec876130c93f36

  • SSDEEP

    6144:F9b8+wW/Wco9GZbOHqYCGwYyX9Y1J3yVA3Upzm88TKmIImK4E7AjEwYM/vYZu6Yj:Tb8+/hbOHsG46Xx6mWIFNOYM/h8cvB

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.209

Attributes
  • url_path

    /3cd2b41cbde8fc9c.php

Targets

    • Target

      d562b3b44859f761645676e0c0e7daad1226c5b90f53b4fe5e5395bf77454ec7.exe

    • Size

      384KB

    • MD5

      3170aed3eb44bd638cce6f67650d4b50

    • SHA1

      22519afd371ed56fe6b4b4565534e09d0dd20453

    • SHA256

      d562b3b44859f761645676e0c0e7daad1226c5b90f53b4fe5e5395bf77454ec7

    • SHA512

      7e7c6289de619d06a7ca36fdb11d3d1a04e0913dffcfabac7af71213e2e8c54bb367ecf318b07e40b8734d3a7db92cb5de6f73e99caa9c254eec876130c93f36

    • SSDEEP

      6144:F9b8+wW/Wco9GZbOHqYCGwYyX9Y1J3yVA3Upzm88TKmIImK4E7AjEwYM/vYZu6Yj:Tb8+/hbOHsG46Xx6mWIFNOYM/h8cvB

    • Glupteba

      Glupteba is a modular loader written in Golang with various components.

    • Glupteba payload

    • Modifies firewall policy service

    • Stealc

      Stealc is an infostealer written in C++.

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Modifies Windows Firewall

    • 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.

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • 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.

    • Drops Chrome extension

    • Drops desktop.ini file(s)

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    • Manipulates WinMonFS driver.

      Roottkits write to WinMonFS to hide directories/files from being detected.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks