GridinSoft Threat Intelligence
sihost64.exe threat report
GridinSoft Anti-Malware detection
Detected by GridinSoft before you download
The current ThreatInfo record shows this exact file hash detected as Ransom.Wacatac. 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
- Ransom.Wacatac
- Recommended action
- Scan and remove
- Last analysis
- 2023-04-16 23:22:33 (3 years ago)
- File hash
- e5ec0de81402842d1e27a2234d978e53
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as Ransom.Wacatac.
First seen 2023-04-16 23:22:33 (3 years ago); latest analysis 2023-04-16 23:22:33 (3 years ago).
Company metadata: Opera Software. Product metadata: Opera GX Internet Browser.
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
sihost64.exe is a Windows file recorded in the ThreatInfo database. It is associated with Opera GX Internet Browser. The reported company name is Opera Software. The current detection status is Ransom.Wacatac, based on the latest analysis from 2023-04-16 23:22:33 (3 years ago).
If sihost64.exe 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 Ransom.Wacatac.
File Details
| Product Name: | Opera GX Internet Browser |
| Company Name: | Opera Software |
| MD5: | e5ec0de81402842d1e27a2234d978e53 |
| Size: | 1 MB |
| First Published: | 2023-04-16 23:22:33 (3 years ago) |
| Latest Published: | 2023-04-16 23:22:33 (3 years ago) |
| Status: | Ransom.Wacatac (on last analysis) | |
| Analysis Date: | 2023-04-16 23:22:33 (3 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:
| %appdata%\common files |
ThreatInfo has observed sihost64.exe 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 sihost64.exe 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 Ukraine 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 sihost64.exe 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
sihost64.exe 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.
PE Sections:
Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.
9b85e05844b0f521f70eb55d5318eb4f
f5531887848b0dbfd425da7393c5f9d5
083a098821aefc3b5cf801b5407b9a44
e3647c428c6c6b977e22149a44b6d5cb
7b91a30b759ae9326a6cee838df48b63
a8b2b2210d47635c1b50b29ac182f3f9
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 Ransom.Wacatac
This report identifies sihost64.exe by MD5 e5ec0de81402842d1e27a2234d978e53. If the same file is present on your device, scan the system and remove the detected object after confirming the hash and location.