Fsfilter2.sys
- Driver Name
Fsfilter2.sys- MD5
5d1c1d12aa204f364a3660332b469868- SHA1
2f21be785d67249195320e6e0423325716e58e02- SHA256
7534fc32d94b51ca0ec41f3ff99473b84abaed516d93eaa3542cd53dbb6cc9bd- Imphash
741aaf38fd135aaba1b3d14913f7a0f8- Vhash
0360b6050d050606070d19z17z1xz- Authentihash
26dd0e60246604cbd46c85e11a2f7ff1b1d24a94e0ab4b98b2a16d52273cf1b0- Rich PE header hash
N/A- SSDEEP
49152:fnnAghPjvcrjzzYeQiNuP6OqwXChBvQdz1OSILEyry81MI9EGmwu5zz:/nNjvcrjzt8P6DTkdROqQbMI9kbP- TLSH
T11FE5019E2258371CC01E84709433BC59B1F6962E4EE6957EB1DBBBD073DE824DA42B13- Signer
Microsoft Windows Hardware Compatibility Publisher- Signing date
2020-11-14 15:28- SpcSpOpusInfo
Shanghai Fangye Network Technology Co., Ltd.- VT detections
3/73- Compilation time
2020-11-13- PDB path
N/A- Country submitter
- Singapore
- 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