Resubmissions

28/02/2024, 08:04

240228-jyrznseh7x 9

23/02/2024, 14:57

240223-sblc2sbe25 9

General

  • Target

    691ef3891d5c155f2689647f2c441617.exe

  • Size

    4.1MB

  • Sample

    240228-jyrznseh7x

  • MD5

    691ef3891d5c155f2689647f2c441617

  • SHA1

    03252b08cea28b39026ead3ee95f9d3db3acf3ce

  • SHA256

    bfbf60a70d1dbdd452f3b3bc819ce5804b5fc4baa028af084c2e84abaf73bb65

  • SHA512

    37f9e6c9ab03ceee528f8eab910d2ddaf8822a6c28bdb8b3129996120d50c4d51358482e14d8d4e90d3ef2e8a08cda5f36cd1109e0129998243e89806dc34960

  • SSDEEP

    98304:rJwI8rhd38BxuBCgbL5KWnsdZButFXK/IUCccYZPAxFe:GECwgQYspAF6/IjccYGF

Malware Config

Targets

    • Target

      691ef3891d5c155f2689647f2c441617.exe

    • Size

      4.1MB

    • MD5

      691ef3891d5c155f2689647f2c441617

    • SHA1

      03252b08cea28b39026ead3ee95f9d3db3acf3ce

    • SHA256

      bfbf60a70d1dbdd452f3b3bc819ce5804b5fc4baa028af084c2e84abaf73bb65

    • SHA512

      37f9e6c9ab03ceee528f8eab910d2ddaf8822a6c28bdb8b3129996120d50c4d51358482e14d8d4e90d3ef2e8a08cda5f36cd1109e0129998243e89806dc34960

    • SSDEEP

      98304:rJwI8rhd38BxuBCgbL5KWnsdZButFXK/IUCccYZPAxFe:GECwgQYspAF6/IjccYGF

    • 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.

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • 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

    • Writes to the Master Boot Record (MBR)

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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks