Resubmissions

06/07/2023, 19:13

230706-xxfrxafa3z 9

06/07/2023, 15:46

230706-s7n4tadh2z 9

06/07/2023, 15:39

230706-s3pvjsdg6t 9

General

  • Target

    pdfelement-pro_full5239.exe

  • Size

    141.7MB

  • Sample

    230706-s3pvjsdg6t

  • MD5

    0475bec97b75aaa61374fd1cd8ece984

  • SHA1

    08a178319f31293d13d63eda2bfde53ba040ba31

  • SHA256

    6b58b4404f4a473ac5a9b3c31a6c1dcaf611ca24e06bb5115546d72a5a23d802

  • SHA512

    462e6c207196e9e8c546b24a30ff9f34ef6e5fd135d5e8c72a7ca1abd0076067ee607438374306350723bf92f78c37740f0b269b0a5c76d51a0c319313b60b3c

  • SSDEEP

    3145728:rMNCCUDmZT5id99oexDEqOWgDXoDnO+G5oIAnbMG:ZCZsdD/MDXsO+moJbMG

Malware Config

Targets

    • Target

      pdfelement-pro_full5239.exe

    • Size

      141.7MB

    • MD5

      0475bec97b75aaa61374fd1cd8ece984

    • SHA1

      08a178319f31293d13d63eda2bfde53ba040ba31

    • SHA256

      6b58b4404f4a473ac5a9b3c31a6c1dcaf611ca24e06bb5115546d72a5a23d802

    • SHA512

      462e6c207196e9e8c546b24a30ff9f34ef6e5fd135d5e8c72a7ca1abd0076067ee607438374306350723bf92f78c37740f0b269b0a5c76d51a0c319313b60b3c

    • SSDEEP

      3145728:rMNCCUDmZT5id99oexDEqOWgDXoDnO+G5oIAnbMG:ZCZsdD/MDXsO+moJbMG

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

    • Downloads MZ/PE file

    • Checks BIOS information in registry

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

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v6

Tasks