GridinSoft Threat Intelligence
$RNBOJ2L.sys threat report
GridinSoft Anti-Malware detection
Detected by GridinSoft before you download
The current ThreatInfo record shows this exact file hash detected as PUP.MailRu. 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.MailRu
- Recommended action
- Scan and remove
- Last analysis
- 2023-06-24 23:12:53 (2 years ago)
- File hash
- fb098256ea064803093d9b1a2f6d06ac
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as PUP.MailRu.
First seen 2018-10-05 20:08:24 (7 years ago); latest analysis 2023-06-24 23:12:53 (2 years ago).
Company metadata: LLC Mail.Ru. Product metadata: Mail.Ru AntiCheat.
Signed by Mail.Ru LLC;Microsoft Windows Hardware Compatibility Publisher;Mail.Ru LLC. The signature is reported as valid, but signed files can still be bundled or abused.
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
- 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
$RNBOJ2L.sys is a Windows file recorded in the ThreatInfo database. It is associated with Mail.Ru AntiCheat. The reported company name is LLC Mail.Ru. The current detection status is PUP.MailRu, based on the latest analysis from 2023-06-24 23:12:53 (2 years ago).
If $RNBOJ2L.sys 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.MailRu.
File Details
| Product Name: | Mail.Ru AntiCheat |
| Company Name: | LLC Mail.Ru |
| MD5: | fb098256ea064803093d9b1a2f6d06ac |
| Size: | 9 MB |
| First Published: | 2018-10-05 20:08:24 (7 years ago) |
| Latest Published: | 2023-06-24 23:12:53 (2 years ago) |
| Status: | PUP.MailRu (on last analysis) | |
| Analysis Date: | 2023-06-24 23:12:53 (2 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.
Overview
| Signed By: | Mail.Ru LLC;Microsoft Windows Hardware Compatibility Publisher;Mail.Ru LLC |
| Status: | Valid |
The signature on $RNBOJ2L.sys 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:
| %system% |
| %sysdrive%\$recycle.bin |
ThreatInfo has observed $RNBOJ2L.sys 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:
4 observed namesThis 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.
Geographic signal
Observed country distribution
ThreatInfo has seen $RNBOJ2L.sys across 52 countries. Use this signal to compare local evidence with where the sample is most often reported.
The strongest geographic signal for this file is Russian Federation with 58.9% 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 $RNBOJ2L.sys is Windows 10 with 67.5% 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
$RNBOJ2L.sys is identified as pe for 64-bit systems. The subsystem is Native. 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.
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
387d3cec6641bcedbf49389f4d198e83
2b3a1f9ca8ea98c2e954f25604f86e67
c2c7ff237634b1ec57cf2f400bd3a9d2
4b88d0a4f76ac73fb464c5a5f2ed814b
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.MailRu
This report identifies $RNBOJ2L.sys by MD5 fb098256ea064803093d9b1a2f6d06ac. If the same file is present on your device, scan the system and remove the detected object after confirming the hash and location.