General

  • Target
    E39A5FA4C76264AE7D7343E41675A636.exe
  • Size 2.6MB
  • Sample210730-bezpcqbbcn
  • SHA256 d72dd5663947fc7e1bd8903030b3e2fd551d8d938fdc6417d8513a1c4cc49702
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • vidar

Version
  • 39.7

Botnet
  • 933

C2
  • https://shpak125.tumblr.com/

Attributes
  • profile_id

    933

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://conceitosseg.com/upload/

  • http://integrasidata.com/upload/

  • http://ozentekstil.com/upload/

  • http://finbelportal.com/upload/

  • http://telanganadigital.com/upload/

rc4.i32
rc4.i32

Targets

    • Target
      E39A5FA4C76264AE7D7343E41675A636.exe
    • Size 2.6MB
    • SHA256 d72dd5663947fc7e1bd8903030b3e2fd551d8d938fdc6417d8513a1c4cc49702
    • MD5 SHA1 SHA512
    • Modifies Windows Defender Real-time Protection settings

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • 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.

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • suricata: ET MALWARE Observed Elysium Stealer Variant CnC Domain (all-brain-company .xyz in TLS SNI)

    • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

    • suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

    • Nirsoft

    • Vidar Stealer

    • ASPack v2.12-2.42

      Detects executables packed with ASPack v2.12-2.42

    • Downloads MZ/PE 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.

    • Accesses 2FA software files, possible credential harvesting

    • 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.

    • 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.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks