General

  • Target

    CucumberPerm.exe

  • Size

    4.4MB

  • Sample

    241001-sfyh6szcqa

  • MD5

    fdc104e5c49f8dbecfd3cdae4cd1786b

  • SHA1

    79e8c33151a53746865e13f4b12c4b6e7899c559

  • SHA256

    ee86642427c5a1b6f949f6e3161da1b8bb05594d4730f815ebc34478a79e76fd

  • SHA512

    b422308220a1adc81a7c0b082f9967e48f200b9de072ca56435d4ebb872709dcab00b1070e7c8cc5d927d24f760cf9eedae801f1a5ea13777d4807b7d2f326e2

  • SSDEEP

    98304:6hPPkkqr3RwUo8UTEF0pflxoLQVHIk9jh1zlgu/ymvOpUypuJK7Cjgzn:6hPPWBwT8kFl9th1z6uxODpRCEL

Malware Config

Targets

    • Target

      CucumberPerm.exe

    • Size

      4.4MB

    • MD5

      fdc104e5c49f8dbecfd3cdae4cd1786b

    • SHA1

      79e8c33151a53746865e13f4b12c4b6e7899c559

    • SHA256

      ee86642427c5a1b6f949f6e3161da1b8bb05594d4730f815ebc34478a79e76fd

    • SHA512

      b422308220a1adc81a7c0b082f9967e48f200b9de072ca56435d4ebb872709dcab00b1070e7c8cc5d927d24f760cf9eedae801f1a5ea13777d4807b7d2f326e2

    • SSDEEP

      98304:6hPPkkqr3RwUo8UTEF0pflxoLQVHIk9jh1zlgu/ymvOpUypuJK7Cjgzn:6hPPWBwT8kFl9th1z6uxODpRCEL

    • Cerber

      Cerber is a widely used ransomware-as-a-service (RaaS), first seen in 2017.

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

    • Modifies Windows Firewall

    • Stops running service(s)

    • 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.

    • Executes dropped EXE

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks whether UAC is enabled

    • Network Service Discovery

      Attempt to gather information on host's network.

    • Checks system information in the registry

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

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks