GridinSoft Threat Intelligence
SDBigUpgrade11.exe threat report
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as AIDetect.1224357.
First seen 2025-09-01 23:01:05 (8 months ago); latest analysis 2025-12-05 23:00:53 (5 months ago).
Company metadata: IObit. Product metadata: Smart Defrag.
Signed by IObit CO., LTD. The signature is reported as valid, but signed files can still be bundled or abused.
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
SDBigUpgrade11.exe is a Windows file recorded in the ThreatInfo database. It is associated with Smart Defrag. The reported company name is IObit. The current detection status is AIDetect.1224357, based on the latest analysis from 2025-12-05 23:00:53 (5 months ago).
If SDBigUpgrade11.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 AIDetect.1224357.
File Details
| Product Name: | Smart Defrag |
| Company Name: | IObit |
| MD5: | cdffca8e3361793c4df8d28125bf2b66 |
| Size: | 1 MB |
| First Published: | 2025-09-01 23:01:05 (8 months ago) |
| Latest Published: | 2025-12-05 23:00:53 (5 months ago) |
| Status: | AIDetect.1224357 (on last analysis) | |
| Analysis Date: | 2025-12-05 23:00:53 (5 months 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: | IObit CO., LTD |
| Status: | Valid |
The signature on SDBigUpgrade11.exe 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.
Geographic signal
Observed country distribution
ThreatInfo has seen SDBigUpgrade11.exe across 2 countries. Use this signal to compare local evidence with where the sample is most often reported.
The strongest geographic signal for this file is France with 50.0% 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 SDBigUpgrade11.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
SDBigUpgrade11.exe 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.
e851f689df1c676d1f0b2f36e817bbca
b1ee2dfe0410a652944f4752134a12ef
fa1b3b5c4c3a70bf2e3b08fdc20127af
d41d8cd98f00b204e9800998ecf8427e
893c080d18ddbf9941f62a67743c2b2c
d41d8cd98f00b204e9800998ecf8427e
b4be4c609ae76eccb39fd236f6da3c49
e2cfb43efc06566a3719874c6817f9be
687c122f2c9cd654d34b9f8739dbd6a0
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 AIDetect.1224357
This report identifies SDBigUpgrade11.exe by MD5 cdffca8e3361793c4df8d28125bf2b66. If the same file is present on your device, scan the system and remove the detected object after confirming the hash and location.