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filesystemdriver_upgrade.exe

OOO

The application filesystemdriver_upgrade.exe by OOO has been detected as adware by 2 anti-malware scanners. It runs as a scheduled task under the Windows Task Scheduler named FileSystemDriver triggered daily at a specified time. While running, it connects to the Internet address static.174.43.9.5.clients.your-server.de on port 80 using the HTTP protocol.
Publisher:
OOO   (signed and verified)

MD5:
93f8b55e6815d2e2bde3bd0bdb9ce40b

SHA-1:
09b0329376d3e2255fe59623a3fe74a89db1623b

SHA-256:
e6908250ef151842675ba152d1a49c6ff33a144bc6326b15d3ae167c45afd6df

Scanner detections:
2 / 68

Status:
Adware

Analysis date:
7/13/2025 1:41:33 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP (M)
17.2.24.9

File size:
801 KB (820,224 bytes)

File type:
Executable application (Win32 EXE)

Language:
Russian

Common path:
C:\Documents and Settings\{user}\Application data\filesystemdriver\filesystemdriver_upgrade.exe

Digital Signature
Signed by:
OOO

Subject:
CN="OOO ""Port-Prom""", O="OOO ""Port-Prom""", STREET="d. 33 str. 1, ul.1-Ya Brestskaya", L=Moscow, S=Moscow, PostalCode=125047, C=RU

Serial number:
00FD1BF044DB1DBEFCC734DB43DD0B694B

File PE Metadata
Compilation timestamp:
2/17/2017 10:52:42 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

Entry address:
0x1762

Entry point:
55, 8B, EC, 6A, FF, 68, A0, 8C, 41, 00, 68, C0, 3A, 40, 00, 64, A1, 00, 00, 00, 00, 50, 64, 89, 25, 00, 00, 00, 00, 83, EC, 58, 53, 56, 57, 89, 65, E8, FF, 15, C8, 40, 41, 00, 33, D2, 8A, D4, 89, 15, 04, CF, 4B, 00, 8B, C8, 81, E1, FF, 00, 00, 00, 89, 0D, 00, CF, 4B, 00, C1, E1, 08, 03, CA, 89, 0D, FC, CE, 4B, 00, C1, E8, 10, A3, F8, CE, 4B, 00, 33, F6, 56, E8, CA, 21, 00, 00, 59, 85, C0, 75, 08, 6A, 1C, E8, B0, 00, 00, 00, 59, 89, 75, FC, E8, 0A, 20, 00, 00, FF, 15, C4, 40, 41, 00, A3, 44, E4, 4B, 00, E8...
 
[+]

Entropy:
6.8577

Developed / compiled with:
Microsoft Visual C++ v6.0

Code size:
76 KB (77,824 bytes)

2 Scheduled Tasks
Task name:
FileSystemDriver

Path:
C:\WINDOWS\Tasks\FileSystemDriver.job

Trigger:
Daily (Runs daily at 2:50 PM)

Task name:
syslog

Trigger:
Time


The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to static.174.43.9.5.clients.your-server.de  (5.9.43.174:80)

TCP (HTTP):
Connects to sharing.katcryo.com  (185.20.186.51:80)

TCP (HTTP):
Connects to dns.set.error  (185.14.29.162:80)

TCP (HTTP):
Connects to ec2-52-210-51-8.eu-west-1.compute.amazonaws.com  (52.210.51.8:80)

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