General

  • Target

    WZAgent.exe

  • Size

    24.3MB

  • Sample

    240521-smkkwsac3t

  • MD5

    2812e3412cdfde43d093addd686f7541

  • SHA1

    6044220194e89f9e4054ae049708aa364f4a2557

  • SHA256

    fc7eb157162927439876c4562b5384cc68db185bfcf91335c8c7edc1d2dcf5ff

  • SHA512

    8fa3035a2959854971539d0b62594c152c25417a6c55581eb91510730aed661e97698685a3566f7ade939cb1c55429f6b73fd9159f04de6e78571e55de2148a9

  • SSDEEP

    393216:T/2gRyBpa4UEQ7mMzVR0/p/I3Eqg8OqnYTOWxhXNPQfLtCwzIuDSMivX:TupzUEQ7mkVR0RI/OqnYtdPY9SxvX

Malware Config

Targets

    • Target

      WZAgent.exe

    • Size

      24.3MB

    • MD5

      2812e3412cdfde43d093addd686f7541

    • SHA1

      6044220194e89f9e4054ae049708aa364f4a2557

    • SHA256

      fc7eb157162927439876c4562b5384cc68db185bfcf91335c8c7edc1d2dcf5ff

    • SHA512

      8fa3035a2959854971539d0b62594c152c25417a6c55581eb91510730aed661e97698685a3566f7ade939cb1c55429f6b73fd9159f04de6e78571e55de2148a9

    • SSDEEP

      393216:T/2gRyBpa4UEQ7mMzVR0/p/I3Eqg8OqnYTOWxhXNPQfLtCwzIuDSMivX:TupzUEQ7mkVR0RI/OqnYtdPY9SxvX

    • AgentTesla

      Agent Tesla is a remote access tool (RAT) written in visual basic.

    • AgentTesla payload

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

    • Checks BIOS information in registry

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

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks whether UAC is enabled

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks