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General

  • Target

    file

  • Size

    192KB

  • Sample

    231001-17vwcsea5x

  • MD5

    9521d635a05ad502cc554991c46b4483

  • SHA1

    0577ecd929032aa60ac2410f0668176bbfb98159

  • SHA256

    7da2dcc910a884fe0dad46b7cb06f27caca416b9f2cf237ea8cef6f402c145be

  • SHA512

    81ba6fb00849e257bbda793624c7438b59355e82b921bff8ce46ec02c91313b98502b6f5fcf8e0a8253cc5f295e2a235143406c5397ef70859f94e2bbe252ce6

  • SSDEEP

    3072:RsYQSFGHFnx9CTg/7RPBdXEwm/sxlZN/iXWYl3veBc150D/Ym+ovV:tGlnD7RPB9m/YNamYl3vPmZV

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      192KB

    • MD5

      9521d635a05ad502cc554991c46b4483

    • SHA1

      0577ecd929032aa60ac2410f0668176bbfb98159

    • SHA256

      7da2dcc910a884fe0dad46b7cb06f27caca416b9f2cf237ea8cef6f402c145be

    • SHA512

      81ba6fb00849e257bbda793624c7438b59355e82b921bff8ce46ec02c91313b98502b6f5fcf8e0a8253cc5f295e2a235143406c5397ef70859f94e2bbe252ce6

    • SSDEEP

      3072:RsYQSFGHFnx9CTg/7RPBdXEwm/sxlZN/iXWYl3veBc150D/Ym+ovV:tGlnD7RPB9m/YNamYl3vPmZV

    • 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)

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Deletes itself

    • Executes dropped EXE

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks