GridinSoft Threat Intelligence
ISRT.dll threat report
GridinSoft Anti-Malware detection
Detected by GridinSoft before you download
The current ThreatInfo record shows this exact file hash detected as Worm.Ramnit. 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
- Worm.Ramnit
- Recommended action
- Scan and remove
- Last analysis
- 2021-01-06 07:42:19 (5 years ago)
- File hash
- 4acc04791589415102edfbc7b2c9f94d
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as Worm.Ramnit.
First seen 2021-01-06 07:42:19 (5 years ago); latest analysis 2021-01-06 07:42:19 (5 years ago).
Company metadata: Macrovision Corporation. Product metadata: InstallShield (R).
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.
File context
ISRT.dll is a Windows file recorded in the ThreatInfo database. It is associated with InstallShield (R). The reported company name is Macrovision Corporation. The current detection status is Worm.Ramnit, based on the latest analysis from 2021-01-06 07:42:19 (5 years ago).
If ISRT.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 Worm.Ramnit.
File Details
| Product Name: | InstallShield (R) |
| Company Name: | Macrovision Corporation |
| MD5: | 4acc04791589415102edfbc7b2c9f94d |
| Size: | 684 KB |
| First Published: | 2021-01-06 07:42:19 (5 years ago) |
| Latest Published: | 2021-01-06 07:42:19 (5 years ago) |
| Status: | Worm.Ramnit (on last analysis) | |
| Analysis Date: | 2021-01-06 07:42:19 (5 years 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.
Common Places:
| %commondir%\installshield\driver\11 |
ThreatInfo has observed ISRT.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 ISRT.dll 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 Philippines 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 ISRT.dll is Windows 7 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
ISRT.dll is identified as pe for 32-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.
PE Sections:
Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.
6068ce172ad219bef15ea68024292d3b
b2d25fe62bc07c8cea6533a1877226f8
8957afd2b65784472cb6f09907543137
858160877f92157f5ae44ca44754d4bc
f7046ea6b741ef7a073ad8556458a7a7
b5adad92fd89e779cb0356bc11738472
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 Worm.Ramnit
This report identifies ISRT.dll by MD5 4acc04791589415102edfbc7b2c9f94d. If the same file is present on your device, scan the system and remove the detected object after confirming the hash and location.