Windows 7 deprecation

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General

  • Target

    setup.zip

  • Size

    4.3MB

  • Sample

    250311-ysff1stzg1

  • MD5

    3e8e0169b2aebabb90c612bc077fca16

  • SHA1

    67ec4652a780135261bdf3f97e3e2428848f891d

  • SHA256

    8e211c595ba97a040622063a7fc3482eb53d6e577c959bde51e7f319a27a8b53

  • SHA512

    372787dac12f29912f64c376ed88a2a6b0ea97a2332254119f43fbaba4d133e8a5ef5e159d448c5a99ad24547a9636556948701ed5c441b160f3a0c4d746c731

  • SSDEEP

    98304:eAprQtq+SpMye5PJEoB63g94FjAO1YwlStjQU:nAq+Si16P97lSNr

Malware Config

Targets

    • Target

      setup.exe

    • Size

      709.0MB

    • MD5

      cffa59bdc566b21e6f3b7bbd7d1b943a

    • SHA1

      7319cf3c26228d14c6fb4495519cef5df4cb05ac

    • SHA256

      99a35657f5582f935c761d1b5f6d9b9c859b017bca9178b06231f2b5ce0eeec6

    • SHA512

      48b0f52a6c707efa938ef8f983e6043946b4c748e1dcb7a9aa0f4668a3fda4015ab8691791421f24c53afb5cc384788465bca2168de62c398ce3244b78308a7a

    • SSDEEP

      98304:tw3DAfSsGlM8u5FJSGIfheKutJtjovjuY1uXoY7CQ:MySsGiHrKuJkL6x

    • Modifies firewall policy service

    • PrivateLoader

      PrivateLoader is a downloader sold as a pay-per-install malware distribution service.

    • Privateloader family

    • 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.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks whether UAC is enabled

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks