GridinSoft Threat Intelligence
dmaster.exe threat report
GridinSoft Anti-Malware detection
Detected by GridinSoft before you download
The current ThreatInfo record shows this exact file hash detected as PUP.Caypnamer. 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
- PUP.Caypnamer
- Recommended action
- Scan and remove
- Last analysis
- 2026-04-23 23:00:19 (a month ago)
- File hash
- 902c77c74bd78b5dadfeb8640ab0ae19
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as PUP.Caypnamer, part of the PUP threat category.
Potentially unwanted programs, bundlers, installers, and utilities with intrusive behavior. Related PUP reports help compare this file with nearby detections, publishers, and hashes.
First seen 2026-04-23 23:00:19 (a month ago); latest analysis 2026-04-23 23:00:19 (a month ago).
Company metadata: WestByte. Product metadata: Download Master.
Signed by Download Master LLC. 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 PUP category for related samples and common context.
File context
dmaster.exe is a Windows file recorded in the ThreatInfo database. It is associated with Download Master. The reported company name is WestByte. The current detection status is PUP.Caypnamer, based on the latest analysis from 2026-04-23 23:00:19 (a month ago). ThreatInfo groups this verdict with PUP reports for broader family-level investigation.
If dmaster.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 PUP.Caypnamer.
File Details
| Product Name: | Download Master |
| Company Name: | WestByte |
| MD5: | 902c77c74bd78b5dadfeb8640ab0ae19 |
| Size: | 6 MB |
| First Published: | 2026-04-23 23:00:19 (a month ago) |
| Latest Published: | 2026-04-23 23:00:19 (a month ago) |
| Status: | PUP.Caypnamer (on last analysis) | |
| Analysis Date: | 2026-04-23 23:00:19 (a month 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: | Download Master LLC |
| Status: | Valid |
The signature on dmaster.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.
Common Places:
| %programfiles% |
ThreatInfo has observed dmaster.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 dmaster.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 Estonia 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 dmaster.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
dmaster.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.
79a195322dcaa59659f9bba9c5017683
977688f3e72b68a5aa30316def1b4724
d41d8cd98f00b204e9800998ecf8427e
0cf81a07add80b68301eff3c25aa9619
d41d8cd98f00b204e9800998ecf8427e
433a5dbe4842a37cf830b5b3709a5ea8
b06d1fe0f82579b5cf8c680e4c18e53e
5258b1157cade71bbcfb15599d1e04b2
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 PUP.Caypnamer
This report identifies dmaster.exe by MD5 902c77c74bd78b5dadfeb8640ab0ae19. It is part of the PUP 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.