GridinSoft Threat Intelligence

apcsdk2.dll file report

Under review File reputation report
MD5 16d8836ba2f536edebb12f79108fbb5d
Latest seen 2026-05-13 17:00:59 (2 weeks ago)
First seen 2026-01-21 23:01:17 (4 months ago)
Size 5 MB

Why it matters

Evidence available for this file

Detection

No final classification is available yet.

Timeline

First seen 2026-01-21 23:01:17 (4 months ago); latest analysis 2026-05-13 17:00:59 (2 weeks ago).

Publisher context

Company metadata: Avira Operations GmbH. Product metadata: Avira Protecion Cloud SDK.

Digital signature

Signed by Avira Operations GmbH. The signature is reported as valid, but signed files can still be bundled or abused.

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. Use the hash and metadata below to verify the exact file identity.
  2. Review publisher, signature, paths, and PE details for inconsistencies.
  3. Run a local scan if the file appears unexpectedly or starts with Windows.

apcsdk2.dll is a Windows file recorded in the ThreatInfo database. It is associated with Avira Protecion Cloud SDK. The reported company name is Avira Operations GmbH. The current detection status is Undefined, based on the latest analysis from 2026-05-13 17:00:59 (2 weeks ago).

ThreatInfo does not have a final classification for this file yet. Use the technical details below to compare the hash, size, signature, and observed locations with the copy found on your device.

Product Name: Avira Protecion Cloud SDK
Company Name: Avira Operations GmbH
MD5: 16d8836ba2f536edebb12f79108fbb5d
Size: 5 MB
First Published: 2026-01-21 23:01:17 (4 months ago)
Latest Published: 2026-05-13 17:00:59 (2 weeks ago)
Status: Undefined (on last analysis)
Analysis Date: 2026-05-13 17:00:59 (2 weeks ago)
Signed By: Avira Operations GmbH
Status: Valid

The signature on apcsdk2.dll 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.

%programfiles%\totalav\endpoint protection sdk\updatebackup
%programfiles%\totalav\endpoint protection sdk

ThreatInfo has observed apcsdk2.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.

Windows 10 100.0%

The most common operating system signal for apcsdk2.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.

apcsdk2.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 0x00404080
Image base 0x0000000180000000

PE Sections:

Sections 8
Raw data 6077952

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

.text 4444672 bytes · 73.1% of section data
MD5 e404308e471f775178d3bbef42d3dd97
.rdata 1364480 bytes · 22.4% of section data
MD5 d1092a8581d7d9b38b4f28d9a86a7349
.data 40448 bytes · 0.7% of section data
MD5 c8348921898ea5a82ba928df8703d17a
.pdata 178176 bytes · 2.9% of section data
MD5 25a44e69ec31d2b532e17088ce9b664d
_RDATA 512 bytes · 0.0% of section data
Uncommon name
MD5 efacc0d84ceee18eedfb1dc48a0f8805
.fptable 512 bytes · 0.0% of section data
Uncommon name
MD5 bf619eac0cdf3f68d496ea9344137e8b
.rsrc 1536 bytes · 0.0% of section data
MD5 34130d583237b1600fea68335fc05781
.reloc 47616 bytes · 0.8% of section data
MD5 26f034381a8a47c8460ea4a12119a163

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

This file is still under review

ThreatInfo has not assigned a final verdict yet. Compare the file hash, location, signature, and publisher before trusting the file on a production system.

Scan with GridinSoft Anti-Malware Use a local scan if the file origin or behavior is unclear. Check this hash on VirusTotal

Recommended next steps

  • Compare the local file MD5 with 16d8836ba2f536edebb12f79108fbb5d.
  • Check the file path, publisher, and signature against the details in this report.
  • Run a GridinSoft scan if the source, path, or behavior looks unusual.