3aca9.rbf file report
ThreatInfo file report
3aca9.rbf
Why it matters
Evidence available for this file
No final classification is available yet.
First seen 2017-05-21 05:04:06 (8 years ago); latest analysis 2025-04-09 23:00:21 (a year ago).
Company metadata: Microsoft Corporation. Product metadata: Microsoft® Visual Studio® 2005.
This hash has appeared under multiple file names, which can happen with repackaging, bundling, or deliberate renaming.
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
- Use the hash and metadata below to verify the exact file identity.
- Review publisher, signature, paths, and PE details for inconsistencies.
- Run a local scan if the file appears unexpectedly or starts with Windows.
File context
3aca9.rbf is a Windows file recorded in the ThreatInfo database. It is associated with Microsoft® Visual Studio® 2005. The reported company name is Microsoft Corporation. The current detection status is Undefined, based on the latest analysis from 2025-04-09 23:00:21 (a year 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.
File Details
| Product Name: | Microsoft® Visual Studio® 2005 |
| Company Name: | Microsoft Corporation |
| MD5: | 4c8a880eabc0b4d462cc4b2472116ea1 |
| Size: | 536 KB |
| First Published: | 2017-05-21 05:04:06 (8 years ago) |
| Latest Published: | 2025-04-09 23:00:21 (a year ago) |
| Status: | Undefined (on last analysis) | |
| Analysis Date: | 2025-04-09 23:00:21 (a year ago) |
Common Places:
| %appdata%\tencent\nba2konline\e06c0423ab6175b049a676f3bc5a0a78\teniodl |
| %programfiles%\tencent\qzone |
| %appdata%\tencent\nba2konline\028a316b2676b2cd8998ceae5fc2dfe2\teniodl |
| %appdata%\tencent\nba2konline\2a6cfbb7eb5f941434935a2514fe5b7f\teniodl |
| %appdata%\tencent\tgp\teniodl |
| %programfiles%\kbasesrv |
| %appdata%\tencent\nba2konline\f9fe3dae0a42934c5c20fabe8b7b2ba8\teniodl |
| %programfiles%\tencent\qqplayer |
| %localappdata%\playfree browser\games\jewel_quest_2-gs_agh |
| %programfiles%\xigua\2.12.0.5 |
ThreatInfo has observed 3aca9.rbf 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.
File Names:
| msvcp80.dll |
| 3aca9.rbf |
This hash has been seen with multiple file names. Alternate names can appear when software is updated, copied between folders, packed by an installer, or deliberately renamed to avoid recognition. Compare the exact MD5 above before assuming two names refer to the same file.
Geography:
| 32.0% | ||
| 22.4% | ||
| 10.5% | ||
| 9.9% | ||
| 5.1% | ||
| 1.7% | ||
| 1.7% | ||
| 1.3% | ||
| 1.2% | ||
| 1.2% | ||
| 0.9% | ||
| 0.9% | ||
| 0.7% | ||
| 0.7% | ||
| 0.7% | ||
| 0.6% | ||
| 0.6% | ||
| 0.6% | ||
| 0.5% | ||
| 0.5% | ||
| 0.5% | ||
| 0.4% | ||
| 0.4% | ||
| 0.4% | ||
| 0.4% | ||
| 0.3% | ||
| 0.3% | ||
| 0.3% | ||
| 0.3% | ||
| 0.2% | ||
| 0.2% | ||
| 0.2% | ||
| 0.2% | ||
| 0.2% | ||
| 0.1% | ||
| 0.1% | ||
| 0.1% | ||
| 0.1% | ||
| 0.1% | ||
| 0.1% | ||
| 0.1% | ||
| 0.1% | ||
| 0.1% | ||
| 0.1% | ||
| 0.1% | ||
| 0.1% | ||
| 0.1% | ||
| 0.1% | ||
| 0.1% | ||
| 0.1% | ||
| 0.1% | ||
| 0.1% | ||
| 0.1% |
The strongest geographic signal for this file is Taiwan with 32.0% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.
OS Version:
| Windows 10 | 58.3% | |
| Windows 7 | 29.2% | |
| Windows XP | 5.1% | |
| Windows 8.1 | 4.4% | |
| Windows 8 | 0.7% | |
| Windows Server 2008 R2 | 0.7% | |
| Windows Server 2012 R2 | 0.7% | |
| Windows Server 2003 | 0.6% | |
| Windows Vista | 0.2% | |
| Windows Server 2012 | 0.1% |
The most common operating system signal for 3aca9.rbf is Windows 10 with 58.3% 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
3aca9.rbf is identified as pe for 32 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.
| Subsystem: | Windows GUI |
| PE Type: | pe |
| OS Bitness: | 32 |
| Image Base: | 0x7c420000 |
| Entry Address: | 0x00030b1e |
PE Sections:
| Name | Size of data | MD5 |
| .text | 212992 | a6809147e06be08ad8026fabed97d688 |
| .rdata | 299008 | f47b2c43fda96615c9e75f2f9bd37a1b |
| .data | 8192 | 813ddc77dd38981099fe8cc9749cde31 |
| .rsrc | 4096 | 3929ae18372d69eb5c97db0283e0126b |
| .reloc | 20480 | 508ad4d5b794ac060152e7dbd8329e6b |
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.
More information:
