General

  • Target

    523ab125255aa59fbfb17e2c5acd8b99a21256ee171fcaaad81b26dedd79b3f9

  • Size

    269KB

  • Sample

    220123-1x5yksgdel

  • MD5

    1711bc25b17dfb7f4b803515170604f0

  • SHA1

    0035a2fbd7b082aa425b2c086f5a4cbdd8d8d767

  • SHA256

    523ab125255aa59fbfb17e2c5acd8b99a21256ee171fcaaad81b26dedd79b3f9

  • SHA512

    1deec43fd3e363bfc1ced0c47dea0493679bf85f83aa308ebcee52050ac440c9b2927d2429e53945889b2239c102cb5fcb8e9dc9e2e061f2673e7abb68616ea6

Malware Config

Extracted

Family

tofsee

C2

patmushta.info

ovicrush.cn

Targets

    • Target

      523ab125255aa59fbfb17e2c5acd8b99a21256ee171fcaaad81b26dedd79b3f9

    • Size

      269KB

    • MD5

      1711bc25b17dfb7f4b803515170604f0

    • SHA1

      0035a2fbd7b082aa425b2c086f5a4cbdd8d8d767

    • SHA256

      523ab125255aa59fbfb17e2c5acd8b99a21256ee171fcaaad81b26dedd79b3f9

    • SHA512

      1deec43fd3e363bfc1ced0c47dea0493679bf85f83aa308ebcee52050ac440c9b2927d2429e53945889b2239c102cb5fcb8e9dc9e2e061f2673e7abb68616ea6

    • 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