General

  • Target
    file.exe
  • Size 2.8MB
  • Sample260501-warefsav6t
  • SHA256 3fccfe37eeeb3e2c3c09333f7b963f84a3610cca533a0ab3a9ad6c8beb3bf705
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      file.exe
    • Size 2.8MB
    • SHA256 3fccfe37eeeb3e2c3c09333f7b963f84a3610cca533a0ab3a9ad6c8beb3bf705
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detects Vidar Stealer

    • Family: Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Family: xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Suspicious use of NtCreateUserProcessOtherParentProcess

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

    • XMRig Miner payload

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Drops file in Drivers directory

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Creates new service(s)

    • Executes dropped EXE

    • 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.

    • Stops running service(s)

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Accesses Microsoft Outlook profiles

    • 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

    • Power Settings

      powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v16

Tasks