General

  • Target

    SteamServersFix.exe

  • Size

    327KB

  • Sample

    241203-ysdx7a1pcw

  • MD5

    a4b716a88bd9bffe93238cf361d2bb9b

  • SHA1

    a8d98a27fe2c4d36b0093d518660afe5f8f59208

  • SHA256

    fa01f82861a9949b4bddcadd6c2c5fd707b07c6a4090b08a19e932236c04feb9

  • SHA512

    65d1c05de9634c4fc6562233010b473dabf13507108fd9ba83842598a72270b57added822726bb71585a5c70a8355940258c322cfe427e150d7e579f067421a6

  • SSDEEP

    6144:zqW6/EpyjHwbECuizo+GIIIIIIIhIIIIIIIIIIIIIIIU:zj0tCuizL

Malware Config

Extracted

Family

xworm

C2

vshostupdater.duckdns.org:1177

http://vshostupdater.duckdns.org:1177

octothl-21053.portmap.host:21053:1177

189.14.62.242:1177

192.168.1.6:1177

187.18.72.113:1177

189.14.53.123:1177

Attributes
  • Install_directory

    %AppData%

  • install_file

    SteamProcFix.exe

Targets

    • Target

      SteamServersFix.exe

    • Size

      327KB

    • MD5

      a4b716a88bd9bffe93238cf361d2bb9b

    • SHA1

      a8d98a27fe2c4d36b0093d518660afe5f8f59208

    • SHA256

      fa01f82861a9949b4bddcadd6c2c5fd707b07c6a4090b08a19e932236c04feb9

    • SHA512

      65d1c05de9634c4fc6562233010b473dabf13507108fd9ba83842598a72270b57added822726bb71585a5c70a8355940258c322cfe427e150d7e579f067421a6

    • SSDEEP

      6144:zqW6/EpyjHwbECuizo+GIIIIIIIhIIIIIIIIIIIIIIIU:zj0tCuizL

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Executes dropped EXE

    • Adds Run key to start application

MITRE ATT&CK Enterprise v15

Tasks