General

  • Target

    28500371a121fbec1892189f8dcf5ad3e29db577b3d538d15276b23e17b15f7b

  • Size

    267KB

  • Sample

    220123-tccyqsgbf7

  • MD5

    99975cc20d85acc9b2bf2d199069a123

  • SHA1

    6fb4e06db0107fc7609595c2562f60e4072d61fe

  • SHA256

    28500371a121fbec1892189f8dcf5ad3e29db577b3d538d15276b23e17b15f7b

  • SHA512

    08195ad5890628b071bf1aa7cf6dd0e3acf95fc5acfd614126f4a33c36147cc0f8122ea416729a7efb5ee537e97f16f7ff32d2e129af6f43818d1da9ae8f9d1e

Malware Config

Extracted

Family

tofsee

C2

patmushta.info

ovicrush.cn

Targets

    • Target

      28500371a121fbec1892189f8dcf5ad3e29db577b3d538d15276b23e17b15f7b

    • Size

      267KB

    • MD5

      99975cc20d85acc9b2bf2d199069a123

    • SHA1

      6fb4e06db0107fc7609595c2562f60e4072d61fe

    • SHA256

      28500371a121fbec1892189f8dcf5ad3e29db577b3d538d15276b23e17b15f7b

    • SHA512

      08195ad5890628b071bf1aa7cf6dd0e3acf95fc5acfd614126f4a33c36147cc0f8122ea416729a7efb5ee537e97f16f7ff32d2e129af6f43818d1da9ae8f9d1e

    • 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

    • Legitimate hosting services abused for malware hosting/C2

    • 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

Command and Control

Web Service

1
T1102

Tasks