General

  • Target
    C18917D0BE89C4A6A903FE79D2E53422.exe
  • Size 3.1MB
  • Sample210704-6f3lrshar2
  • SHA256 36fbd13bcaaed056a66effa738869c3ce6a79872c2b55d0cd72bfdddf314ee68
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • vidar

Version
  • 39.4

Botnet
  • 706

C2
  • https://sergeevih43.tumblr.com

Attributes
  • profile_id

    706

Extracted

Family
  • redline

Botnet
  • DomAni2

C2
  • flestriche.xyz:80

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://ppcspb.com/upload/

  • http://mebbing.com/upload/

  • http://twcamel.com/upload/

  • http://howdycash.com/upload/

  • http://lahuertasonora.com/upload/

  • http://kpotiques.com/upload/

rc4.i32
rc4.i32

Targets

    • Target
      C18917D0BE89C4A6A903FE79D2E53422.exe
    • Size 3.1MB
    • SHA256 36fbd13bcaaed056a66effa738869c3ce6a79872c2b55d0cd72bfdddf314ee68
    • MD5 SHA1 SHA512
    • Modifies Windows Defender Real-time Protection settings

    • Raccoon

      Simple but powerful infostealer which was very active in 2019.

    • 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 NtCreateUserProcessOtherParentProcess

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Vidar Stealer

    • ASPack v2.12-2.42

      Detects executables packed with ASPack v2.12-2.42

    • Downloads MZ/PE file

    • Executes dropped EXE

    • UPX packed file

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

    • 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.

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • 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.

    • Checks whether UAC is enabled

    • 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 NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks