General

  • Target

    40fe2e71e8a2b1dacda5bfdd2e718281cadfb2fca96286bb617ed16183a4bb31

  • Size

    267KB

  • Sample

    220123-n2bt3sgac3

  • MD5

    9e4eb301978e7ea27f07010af775b19c

  • SHA1

    a9177d777d109264e4ab11f9e8ed6fb1b6ebefee

  • SHA256

    40fe2e71e8a2b1dacda5bfdd2e718281cadfb2fca96286bb617ed16183a4bb31

  • SHA512

    01406a90ba18e331c76f1dbc1074e9d27f1913d4727eee02d7803a64621e9bf4b4f31f23f3f4ff8451c2776ccf2290d7c72c9b470cddd585916045840be0e75e

Malware Config

Extracted

Family

tofsee

C2

patmushta.info

ovicrush.cn

Targets

    • Target

      40fe2e71e8a2b1dacda5bfdd2e718281cadfb2fca96286bb617ed16183a4bb31

    • Size

      267KB

    • MD5

      9e4eb301978e7ea27f07010af775b19c

    • SHA1

      a9177d777d109264e4ab11f9e8ed6fb1b6ebefee

    • SHA256

      40fe2e71e8a2b1dacda5bfdd2e718281cadfb2fca96286bb617ed16183a4bb31

    • SHA512

      01406a90ba18e331c76f1dbc1074e9d27f1913d4727eee02d7803a64621e9bf4b4f31f23f3f4ff8451c2776ccf2290d7c72c9b470cddd585916045840be0e75e

    • Tofsee

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

    • Windows security bypass

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner Payload

    • Creates new service(s)

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Deletes itself

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

New Service

1
T1050

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

New Service

1
T1050

Defense Evasion

Disabling Security Tools

1
T1089

Modify Registry

2
T1112

Discovery

System Information Discovery

1
T1082

Tasks