GridinSoft Threat Intelligence
not.sys threat report
GridinSoft Anti-Malware detection
Detected by GridinSoft before you download
The current ThreatInfo record shows this exact file hash detected as Trojan.Agent. Download GridinSoft Anti-Malware to scan the device, confirm whether this file is present, and remove the detected object if it is found.
- Detection name
- Trojan.Agent
- Recommended action
- Scan and remove
- Last analysis
- 2025-05-27 23:01:06 (a year ago)
- File hash
- bfd90b7a89dc7cc431c2ebfb65882e2c
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as Trojan.Agent, part of the Trojan threat category.
Malware disguised as legitimate software or delivered through deceptive packaging. Related Trojan reports help compare this file with nearby detections, publishers, and hashes.
First seen 2025-05-27 23:01:06 (a year ago); latest analysis 2025-05-27 23:01:06 (a year ago).
Signed by 福建六壬网安股份有限公司. The signature is reported as valid, but signed files can still be bundled or abused.
ThreatInfo has seen this file in user or system paths listed below. Unexpected locations increase the need for local verification.
Recommended action
What to do next
- Compare the MD5 above with the file found on the device.
- Check whether the file appears in the observed locations or under one of the alternate names.
- Run GridinSoft Anti-Malware to confirm the detection and remove the file if it is present. Review the Trojan category for related samples and common context.
File context
not.sys is a Windows file recorded in the ThreatInfo database. The current detection status is Trojan.Agent, based on the latest analysis from 2025-05-27 23:01:06 (a year ago). ThreatInfo groups this verdict with Trojan reports for broader family-level investigation.
If not.sys appears on your computer unexpectedly, treat it as suspicious. Check its location, digital signature, and recent system changes before allowing it to run. A full anti-malware scan is recommended when this file is detected as Trojan.Agent.
File Details
| MD5: | bfd90b7a89dc7cc431c2ebfb65882e2c |
| Size: | 16 KB |
| First Published: | 2025-05-27 23:01:06 (a year ago) |
| Latest Published: | 2025-05-27 23:01:06 (a year ago) |
| Status: | Trojan.Agent (on last analysis) | |
| Analysis Date: | 2025-05-27 23:01:06 (a year ago) |
Detection screenshot
The screenshot is a visual record of a GridinSoft Anti-Malware detection for this sample. Use the hash and metadata above as the primary identifiers when comparing the file on your system.
Overview
| Signed By: | 福建六壬网安股份有限公司 |
| Status: | Valid |
The signature on not.sys is reported as valid. A valid signature helps confirm publisher identity, but it does not automatically make the file safe if the installer was bundled, abused, or downloaded from an untrusted source.
Common Places:
| %commonappdata% |
ThreatInfo has observed not.sys in the locations listed above. Files found in temporary folders, user profile folders, startup locations, or unusual application directories should be reviewed more carefully than files installed under a known program directory.
Geographic signal
Observed country distribution
ThreatInfo has seen not.sys across 1 countries. Use this signal to compare local evidence with where the sample is most often reported.
The strongest geographic signal for this file is Kuwait with 100.0% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.
OS Version:
The most common operating system signal for not.sys is Windows 10 with 100.0% of observed hits. If your system differs from the common profile, check whether the file was introduced by a specific installer, archive, or removable device.
Analysis
not.sys is identified as pe for 64-bit systems. The subsystem is Native. PE header values are useful for triage, especially when they do not match the expected publisher, product, or release timeline.
PE Sections:
Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.
c10cb6de318e9405cba1acf22996871b
56407af48f4600fef3683eea3aa83b18
3d68452fd885b812bbc718b8140565d8
4e474148734946f25b6ee34249b2f5bf
7755efaeabcb739d33aacda8fb58acbf
e4d8d0eee7b0b73c5cbcc15011b12a11
PE section names and hashes can reveal packing, injected resources, or unusual build artifacts. Sections with uncommon names, very large raw data, or hashes that differ from a trusted copy deserve additional review.
Report conclusion
GridinSoft detects this file as Trojan.Agent
This report identifies not.sys by MD5 bfd90b7a89dc7cc431c2ebfb65882e2c. It is part of the Trojan report group. If the same file is present on your device, scan the system and remove the detected object after confirming the hash and location.