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sysnet.exe

OOO

The application sysnet.exe by OOO has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It runs as a scheduled task under the Windows Task Scheduler named sysnet triggered by a time event. While running, it connects to the Internet address dns.set.error on port 80 using the HTTP protocol.
Publisher:
OOO   (signed and verified)

MD5:
6a5feaa49467a1328913566b8911903d

SHA-1:
2392706716306804895001fafa04ccce2e454228

SHA-256:
ed5bea27fc33954d42f860049228332485145ed0744673fe460398b3169b1aad

Scanner detections:
1 / 68

Status:
Adware

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

Analysis date:
7/13/2025 2:43:00 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Trojan.Dropper.PM (M)
17.2.25.3

File size:
777 KB (795,648 bytes)

File type:
Executable application (Win32 EXE)

Language:
Russian (Russia)

Common path:
C:\users\{user}\appdata\local\sysnet\sysnet.exe

Digital Signature
Signed by:
OOO

Authority:
COMODO CA Limited

Valid from:
1/24/2017 4:00:00 PM

Valid to:
7/7/2017 4:59:59 PM

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

Issuer:
CN=COMODO RSA Code Signing CA, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
00FD1BF044DB1DBEFCC734DB43DD0B694B

File PE Metadata
Compilation timestamp:
2/18/2017 1:52:45 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

Entry address:
0x1501

Entry point:
55, 8B, EC, 6A, FF, 68, 20, 81, 40, 00, 68, 5C, 2D, 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, 80, 80, 40, 00, 33, D2, 8A, D4, 89, 15, 3C, C1, 4B, 00, 8B, C8, 81, E1, FF, 00, 00, 00, 89, 0D, 38, C1, 4B, 00, C1, E1, 08, 03, CA, 89, 0D, 34, C1, 4B, 00, C1, E8, 10, A3, 30, C1, 4B, 00, 33, F6, 56, E8, C8, 16, 00, 00, 59, 85, C0, 75, 08, 6A, 1C, E8, B0, 00, 00, 00, 59, 89, 75, FC, E8, 08, 15, 00, 00, FF, 15, 7C, 80, 40, 00, A3, 44, D6, 4B, 00, E8...
 
[+]

Entropy:
6.7445

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

Code size:
28 KB (28,672 bytes)

2 Scheduled Tasks
Task name:
sysnet

Trigger:
Time

Task name:
ScriptWriter

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)

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