General

  • Target

    Patch_MB 4.6.x.exe

  • Size

    65.2MB

  • Sample

    231105-tjxaysad83

  • MD5

    5a164eb5acf9ec12834296ac42ae7c49

  • SHA1

    5f48369f8089f545585f62c1fa2ffea4cf5ac291

  • SHA256

    2da76f18a902b16d7cdfcaea29208ba58e682c9e2b84a6912ba1011fe6603162

  • SHA512

    ad1e8a47c0aa0d909900876c0dcf76760ba098381c2d2caee1bf8cacaab60cfb79a4968aaca1e3894fca8d90224704602f4259a358e330c6136f41125e1c2760

  • SSDEEP

    1572864:OOUOMLEmI4Z8TDCNU63i/BNJNRaGUwDfSzE3FjBdJ14A8/IuNbDdwNVyL:OOUOCEmzfWBNJN4iSzE3FjBCIuNbu+L

Malware Config

Targets

    • Target

      Patch_MB 4.6.x.exe

    • Size

      65.2MB

    • MD5

      5a164eb5acf9ec12834296ac42ae7c49

    • SHA1

      5f48369f8089f545585f62c1fa2ffea4cf5ac291

    • SHA256

      2da76f18a902b16d7cdfcaea29208ba58e682c9e2b84a6912ba1011fe6603162

    • SHA512

      ad1e8a47c0aa0d909900876c0dcf76760ba098381c2d2caee1bf8cacaab60cfb79a4968aaca1e3894fca8d90224704602f4259a358e330c6136f41125e1c2760

    • SSDEEP

      1572864:OOUOMLEmI4Z8TDCNU63i/BNJNRaGUwDfSzE3FjBdJ14A8/IuNbDdwNVyL:OOUOCEmzfWBNJN4iSzE3FjBCIuNbu+L

    • Modifies WinLogon for persistence

    • Blocklisted process makes network request

    • Drops file in Drivers directory

    • Modifies Windows Firewall

    • Sets service image path in registry

    • 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

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Registers COM server for autorun

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Checks system information in the registry

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

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks