General

  • Target

    a1d23796732487b40ce43b22983327b2.exe

  • Size

    279KB

  • Sample

    211020-g5gfeahfcp

  • MD5

    a1d23796732487b40ce43b22983327b2

  • SHA1

    a9b5b16d21b145997a803857a743ce79ac0383b1

  • SHA256

    84839e5c70038104b4d9fbf20988ebc952ea698be6d46c0ad5ed072897427b3f

  • SHA512

    2521705f6645ecd3897d880a2d7cadaadf9fe790715a5a026b564d4fe498f1cea2bca06fb2fd4dd1e3b0a9e3de50a061b48092dde6a97634734b8a68b4b30df0

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

Targets

    • Target

      a1d23796732487b40ce43b22983327b2.exe

    • Size

      279KB

    • MD5

      a1d23796732487b40ce43b22983327b2

    • SHA1

      a9b5b16d21b145997a803857a743ce79ac0383b1

    • SHA256

      84839e5c70038104b4d9fbf20988ebc952ea698be6d46c0ad5ed072897427b3f

    • SHA512

      2521705f6645ecd3897d880a2d7cadaadf9fe790715a5a026b564d4fe498f1cea2bca06fb2fd4dd1e3b0a9e3de50a061b48092dde6a97634734b8a68b4b30df0

    • Tofsee

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

    • Windows security bypass

    • suricata: ET MALWARE DNS Query Sinkhole Domain Various Families (Possible Infected Host)

      suricata: ET MALWARE DNS Query Sinkhole Domain Various Families (Possible Infected Host)

    • 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