General

  • Target
    aa50acd8116fddaaeec779efeab5555a.exe
  • Size 1.6MB
  • Sample210920-rad2xaghhm
  • SHA256 39f5b13c60418f4bcefdd1df075a6fe9e8bd879340c42d12c8a5e636aa035e6d
  • MD5 SHA1 SHA512

Malware Config

Targets

    • Target
      aa50acd8116fddaaeec779efeab5555a.exe
    • Size 1.6MB
    • SHA256 39f5b13c60418f4bcefdd1df075a6fe9e8bd879340c42d12c8a5e636aa035e6d
    • MD5 SHA1 SHA512
    • Process spawned unexpected child process

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

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

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

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

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • 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

    • Reads user/profile data of web browsers

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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • 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.

    • 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