General

  • Target

    421342b77c0aac5fb55fe1b73535afcc.exe

  • Size

    250KB

  • Sample

    211204-jcdj6aafar

  • MD5

    421342b77c0aac5fb55fe1b73535afcc

  • SHA1

    fe22c1e64480348c17a270b7206512bac873912c

  • SHA256

    6b742d5776f47ded81c77b3f947f25d3b113564104967d3ebff716c5b287f384

  • SHA512

    0efc12b18f4ac3aefca63645daf8f448cc01ce621dca2e884953e859d70c57c751358b095eb7123e4c28f1cc4401db179d3a38c2ad04888e517fd4761bdf7e95

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://rcacademy.at/upload/

http://e-lanpengeonline.com/upload/

http://vjcmvz.cn/upload/

http://galala.ru/upload/

http://witra.ru/upload/

https://cinems.club/search.php

https://clothes.surf/search.php

rc4.i32
rc4.i32
rc4.i32
rc4.i32

Extracted

Family

redline

Botnet

1

C2

45.9.20.59:46287

Targets

    • Target

      421342b77c0aac5fb55fe1b73535afcc.exe

    • Size

      250KB

    • MD5

      421342b77c0aac5fb55fe1b73535afcc

    • SHA1

      fe22c1e64480348c17a270b7206512bac873912c

    • SHA256

      6b742d5776f47ded81c77b3f947f25d3b113564104967d3ebff716c5b287f384

    • SHA512

      0efc12b18f4ac3aefca63645daf8f448cc01ce621dca2e884953e859d70c57c751358b095eb7123e4c28f1cc4401db179d3a38c2ad04888e517fd4761bdf7e95

    • CryptBot

      A C++ stealer distributed widely in bundle with other software.

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine Payload

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • suricata: ET MALWARE Arechclient2 Backdoor CnC Init

      suricata: ET MALWARE Arechclient2 Backdoor CnC Init

    • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

      suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Deletes itself

    • Drops startup file

    • 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 Microsoft Outlook profiles

    • 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.

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks