General

  • Target

    41dbb0db0f852fa822dfc024d3effdf27bafa549372f27244902f5fdefa25fd6N.exe

  • Size

    291KB

  • Sample

    241126-zhst2aynet

  • MD5

    e9872731faa5e1fa5ef63e9a07fc0720

  • SHA1

    6dcd38a92ef3920c1fcf85881b92deb2d9c1790a

  • SHA256

    41dbb0db0f852fa822dfc024d3effdf27bafa549372f27244902f5fdefa25fd6

  • SHA512

    0b0788ce65fb26fac72055c099bdd93fa313f0dcef51f82b4e4f4ea7b5cb5a4c7f06e997475da93ece16f1009804c6e13c06f33c9f18c06f3ee0918ba72aa809

  • SSDEEP

    6144:HbDiEbQtM055szCZb55JgXrSXuZet0yob7PANco+hOg:UM450a55G7SXuZet0yob7Ro+F

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

Targets

    • Target

      41dbb0db0f852fa822dfc024d3effdf27bafa549372f27244902f5fdefa25fd6N.exe

    • Size

      291KB

    • MD5

      e9872731faa5e1fa5ef63e9a07fc0720

    • SHA1

      6dcd38a92ef3920c1fcf85881b92deb2d9c1790a

    • SHA256

      41dbb0db0f852fa822dfc024d3effdf27bafa549372f27244902f5fdefa25fd6

    • SHA512

      0b0788ce65fb26fac72055c099bdd93fa313f0dcef51f82b4e4f4ea7b5cb5a4c7f06e997475da93ece16f1009804c6e13c06f33c9f18c06f3ee0918ba72aa809

    • SSDEEP

      6144:HbDiEbQtM055szCZb55JgXrSXuZet0yob7PANco+hOg:UM450a55G7SXuZet0yob7Ro+F

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • Tofsee family

    • Windows security bypass

    • Creates new service(s)

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks