GridinSoft Threat Intelligence

LsfSdk.dll threat report

Detected as Trojan.ExtHeur! File reputation report
MD5 538742b8a860f26186ef326a5475408b
Latest seen 2026-05-01 23:00:59 (3 weeks ago)
First seen 2026-05-01 23:00:59 (3 weeks ago)
Size 6 MB
Product LenovoIdWinSdk

GridinSoft Anti-Malware detection

Detected by GridinSoft before you download

The current ThreatInfo record shows this exact file hash detected as Trojan.ExtHeur!. 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.ExtHeur!
Recommended action
Scan and remove
Last analysis
2026-05-01 23:00:59 (3 weeks ago)
File hash
538742b8a860f26186ef326a5475408b
Download Anti-Malware

Why it matters

Why GridinSoft flags this file

Detection

GridinSoft identifies the sample as Trojan.ExtHeur!, part of the Trojan threat category.

Category context

Malware disguised as legitimate software or delivered through deceptive packaging. Related Trojan reports help compare this file with nearby detections, publishers, and hashes.

Timeline

First seen 2026-05-01 23:00:59 (3 weeks ago); latest analysis 2026-05-01 23:00:59 (3 weeks ago).

Publisher context

Product metadata: LenovoIdWinSdk.

Observed locations

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

  1. Compare the MD5 above with the file found on the device.
  2. Check whether the file appears in the observed locations or under one of the alternate names.
  3. 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

LsfSdk.dll is a Windows file recorded in the ThreatInfo database. It is associated with LenovoIdWinSdk. The current detection status is Trojan.ExtHeur!, based on the latest analysis from 2026-05-01 23:00:59 (3 weeks ago). ThreatInfo groups this verdict with Trojan reports for broader family-level investigation.

If LsfSdk.dll 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.ExtHeur!.

File Details

Product Name: LenovoIdWinSdk
MD5: 538742b8a860f26186ef326a5475408b
Size: 6 MB
First Published: 2026-05-01 23:00:59 (3 weeks ago)
Latest Published: 2026-05-01 23:00:59 (3 weeks ago)
Status: Trojan.ExtHeur! (on last analysis)
Analysis Date: 2026-05-01 23:00:59 (3 weeks ago)

Detection screenshot

LsfSdk.dll 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.

Common Places:

%programfiles%\nero\nero 2026

ThreatInfo has observed LsfSdk.dll 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 LsfSdk.dll across 1 countries. Use this signal to compare local evidence with where the sample is most often reported.

Top country Iraq
Share 100.0%
Low High activity

The strongest geographic signal for this file is Iraq 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:

Windows 10 100.0%

The most common operating system signal for LsfSdk.dll 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

LsfSdk.dll is identified as pe for 64-bit systems. The subsystem is Windows GUI. PE header values are useful for triage, especially when they do not match the expected publisher, product, or release timeline.

Format pe
Architecture 64-bit
Subsystem Windows GUI
Entry point 0x00388a38
Image base 0x0000000180000000

PE Sections:

Sections 7
Raw data 6585856

Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.

.text 4618752 bytes · 70.1% of section data
MD5 074c3f89a0bf489775fd17440b4c0e4d
.rdata 1344512 bytes · 20.4% of section data
MD5 fcf02e76783f0ddd1d3805f8db31c62f
.data 112640 bytes · 1.7% of section data
MD5 77d4101fca38c6a91fca7744faa8f667
.pdata 228864 bytes · 3.5% of section data
MD5 ba210d3b1479b936d181031ef91eadfb
.gehcont 512 bytes · 0.0% of section data
Uncommon name
MD5 966025b78bfd0bf533b0838ad8e32ef9
.rsrc 201728 bytes · 3.1% of section data
MD5 bb8ee25de8942f015c1a1c0f26978db2
.reloc 78848 bytes · 1.2% of section data
MD5 aa6e8ec15e6c20abfb23393f5bf957ce

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.ExtHeur!

This report identifies LsfSdk.dll by MD5 538742b8a860f26186ef326a5475408b. 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.

Download GridinSoft Anti-Malware Scan the device and confirm whether this exact hash is present. Check this hash on VirusTotal

Recommended next steps

  • Compare the local file MD5 with 538742b8a860f26186ef326a5475408b.
  • Check the file path, publisher, and signature against the details in this report.
  • Run a GridinSoft scan and remove the object if the same hash is found. Use the Trojan category to compare similar reports.