Fsfilter2.sys
- Driver Name
Fsfilter2.sys- MD5
adab615712eac2719691d01b69254f29- SHA1
f5f5fdc2899f528978af41916fde45b6a5ea05ac- SHA256
8a84e17abf9befde516c9d6b0604c480a474bccf6f1d4dad15d8986a68077221- Imphash
ab7801caf39f7703a52354de80bb983f- Vhash
016096555d65761656651iz66xz- Authentihash
d5cc48a73e7a24eb8c30ab0ca5a87eeb48ff6f79e0b3d21d029b277ba59c8d96- Rich PE header hash
be0bb9f89ea53793d8cdee9cc42ae2a7- SSDEEP
24576:lKkI7EkyCt5mPIOoI4rW8RfLAOxAgXkLzci3mTkWMI5ImpN4Zpuuv6gVpYpGgkcS:/SzS394rW8RzAbWczt3mTkWMI5pNupuQ- TLSH
T16C65BFAEA258226CC43EC434C0337D59F171341A4779C6FBF3D62A902B676E4993AF46- Signer
Microsoft Windows Hardware Compatibility Publisher- Signing date
2020-12-31 13:49- SpcSpOpusInfo
Shanghai Fangye Network Technology Co., Ltd.- VT detections
37/73- Compilation time
2020-12-31- PDB path
E:\ColdProtect\x64\Debug\Fsfilter264.pdb- Country submitter
- United States, France, Russia
- Flag
- Malicious
Description
A Windows rootkit that loads at boot as a file-system filter driver and cannot be stopped until reboot (no unload function). It protects its own registry key and driver file, redirects browser traffic through an attacker-controlled proxy, and checks in with one of six hard-coded C2 servers every 5–7 seconds to download updates. It also exposes a device (\Device\MyDevice264) that lets user-mode programs kill any process and read, write, or delete files and registry keys with kernel privileges.
Indicators of Compromise:
C2 IPs: 45.248.8[.]212, 103.88.32[.]122, 103.85.86[.]3, 103.60.165[.]145, 110.42.9[.]59, 27.124.40[.]169
C2 ports: TCP 2025, 2136, 2247, 2389, 2467, 2598, 2673, 2781, 2859, 2962
C2 paths: /api/system/getSystemInfo, /api/safe/downfilelist, /driverfile/
Proxy URLs: hxxp://hxtai.mirpac[.]com/api/pac/pacReback.html?key=10073, hxxp://moren.mirpac[.]com/t.txt
Device: \Device\MyDevice264 (symlink MyDriver264)
Marker files: c:\juling.console, c:\config.pac