General

  • Target

    drweb-1.0-katana.exe

  • Size

    46.8MB

  • Sample

    230403-s67jrsff78

  • MD5

    8acc7d1bd885d322e0906c48d66b5eac

  • SHA1

    8dec2d7e07fd6eee855fe3d18d24cb81514f323c

  • SHA256

    c04f2c02e34da7bed4800b45220f5831dec511da884f738c1e3321c18ef8c516

  • SHA512

    32a94a49569e582b12a2a99c8030f01eae213ea11be0b6613e3d79c6f9dc3889c80d27b1fbdeb4edd4849be24c4cbda402026d5556de94090543effa34a3048c

  • SSDEEP

    786432:MwtCRQ9ZTbV/sjEKj3STdBoFMDhSLF9MKIxEPT9cFRHRdDHtKC0owR:MmFlV/6EgAcFMhSJGKIxwJcF1RdDNKQg

Malware Config

Targets

    • Target

      drweb-1.0-katana.exe

    • Size

      46.8MB

    • MD5

      8acc7d1bd885d322e0906c48d66b5eac

    • SHA1

      8dec2d7e07fd6eee855fe3d18d24cb81514f323c

    • SHA256

      c04f2c02e34da7bed4800b45220f5831dec511da884f738c1e3321c18ef8c516

    • SHA512

      32a94a49569e582b12a2a99c8030f01eae213ea11be0b6613e3d79c6f9dc3889c80d27b1fbdeb4edd4849be24c4cbda402026d5556de94090543effa34a3048c

    • SSDEEP

      786432:MwtCRQ9ZTbV/sjEKj3STdBoFMDhSLF9MKIxEPT9cFRHRdDHtKC0owR:MmFlV/6EgAcFMhSJGKIxwJcF1RdDNKQg

    • Drops file in Drivers directory

    • Sets service image path in registry

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Checks for any installed AV software in registry

    • Checks installed software on the system

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

    • Writes to the Master Boot Record (MBR)

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

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

2
T1060

Bootkit

1
T1067

Defense Evasion

Modify Registry

2
T1112

Discovery

Query Registry

6
T1012

System Information Discovery

5
T1082

Security Software Discovery

1
T1063

Peripheral Device Discovery

1
T1120

Tasks