Is 7c577b7fbd3519a282a447e15fbe11febd3b2708fc02d36bd591ea00821ddc37.zip safe?
This file is confirmed confirmed malware — abuse.ch researchers uploaded this exact sample to MalwareBazaar as known malware. Delete this archive from the device, then empty the Recycle Bin or Trash. Scan your system.
This file is confirmed confirmed malware — abuse.ch researchers uploaded this exact sample to MalwareBazaar as known malware. Delete this archive from the device, then empty the Recycle Bin or Trash. Scan your system.
7c577b7fbd3519a282…91ea00821ddc37Recommended next actions
Before opening or extracting
Do not open or extract it. Delete this archive from the device, then empty the Recycle Bin or Trash.
If you already opened or extracted it
Close it. If it opened links, requested credentials, or triggered unexpected behavior, disconnect from the internet and run a full device scan.
Intelligence
The saved assessment, checked against the scan evidence and recorded coverage.
Why this file is confirmed malware
The conclusion below is grounded in the recorded hash match and scan evidence.
This file is confirmed confirmed malware — abuse.ch researchers uploaded this exact sample to MalwareBazaar as known malware. Delete this archive from the device, then empty the Recycle Bin or Trash. Scan your system.
This file is confirmed confirmed malware — abuse.ch researchers uploaded this exact sample to MalwareBazaar as known malware. Delete this archive from the device, then empty the Recycle Bin or Trash. Scan your system. MalwareBazaar is a researcher-curated malware repository; hits there are ground-truth positives.
What We Detected
This file is confirmed confirmed malware — abuse.ch researchers uploaded this exact sample to MalwareBazaar as known malware. Delete this archive from the device, then empty the Recycle Bin or Trash. Scan your system.
Threat Behavior
Refer to the confirmed malware threat family for known tactics.
What To Do Now
Delete this archive from the device, then empty the Recycle Bin or Trash. Scan your system with an up-to-date antivirus.
Where this verdict could be wrong1 caveat
- If this hash is a polymorphic-collision with a legitimate build, the MB label would be misleading — but MB curation makes this extremely rare.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- MalwareBazaar confirmed family: confirmed malware
- Researcher-uploaded malware sample
Delete this archive from the device, then empty the Recycle Bin or Trash. Run a full-system antivirus scan.
Coverage & freshness
Complete means the check returned a usable result. It does not mean the file is safe.
Antivirus
Complete4 of 75 engines flagged the file.
Sandbox
Complete1 isolated runtime environment contributed observations.
Network
Not runNo contacted-host reputation check is recorded.
No timestamp recordedYARA
Complete2 signature or behavior rules matched.
External intel
Complete3 of 3 independent reference sources completed.
Behavior
Plain-English impact first, then the observed runtime evidence.
Runtime flight recorder
Capture complete- 1isolated sandbox run
- 5MITRE ATT&CK techniques
- 12spawned processes
- 0network contacts
- 7filesystem & mutex artifacts
What this file does
Observed actions and their security significance
High concern: Created or modified a system service, which can keep code running.
Moderate concern: Checks which security software you have installed.
Note: Collects details about your system.
These are observed capabilities from an isolated analysis. A technique does not prove malicious intent on its own, and the file never ran on your device.
Threat context
How trojans work
A trojan disguises itself as something useful or harmless to trick you into running it. Once open, it does its real job in the background — anything from stealing data to opening a back door or downloading more malware.
Bottom line:The disguise is the whole trick, so a trustworthy-looking name or icon means nothing.
Attack story
Runtime observations grouped by analysis stage. Arrows organize the stages; they do not claim chronology or causality.
Input file
The submitted object
- FileObserved
7c577b7fbd3519a282a447e15fbe11febd3b2708fc02d36bd591ea00821ddc37.zip
7c577b7fbd3519a282a447e15fbe11febd3b2708fc02d36bd591ea00821ddc37
01Uploaded file
Processes
Runtime execution
- ProcessObserved
Observed process
/bin/gzip
02Isolated runtime analysis - ProcessObserved
Observed process
/bin/sh sh -c "\n\t\tinvoke-rc.d --quiet cups restart > /dev/null\n" logrotate_script "/var/log/cups/*log "
03Isolated runtime analysis - +1 more recorded observation in Analyst mode
Files
Created or changed
- Written fileObserved
coredump_filter
/proc/3553/coredump_filter
04Isolated runtime analysis - Written fileObserved
3553
/tmp/hsperfdata_root/3553
05Isolated runtime analysis - +1 more recorded observation in Analyst mode
5 recorded facts from one runtime window. Every fact remains independently traceable in Analyst mode.
What this file did when executed
This file was detonated in 1 sandbox and its runtime behaviour was observed.
Adversary techniques mapped to the MITRE ATT&CK framework.
- /proc/3553/coredump_filter
- /tmp/hsperfdata_root/3553
- /var/log/auth.log.1.gz
- /var/log/dpkg.log.1.gz
- /var/log/kern.log.1.gz
- /tmp/hsperfdata_root/3553
Files this sample writes at runtime
This file drops 5 children at runtime. None are currently flagged malicious in our cache.
- d87c5f3cdfb5b7c0510e…1ade9eNever scannednever seen before
- 61625fd8b084f70f242d…55abd2Never scannednever seen before
- 50c82f36208ed8040447…2d7843Never scannednever seen before
- 8e8711854186c68e2368…4a3c7cNever scannednever seen before
- 759aafcfa2395ce1b800…2af0f7Never scannednever seen before
Detection & Forensics
Consensus, attribution, signatures, code structure, prevalence, and identity.
Evidence integrity
Chain of custody for the facts preserved in this report.
- 2rule hits recorded
- 4 / 75engines flagged
- 1sources in submission history
Why these facts are shown
Each statement identifies whether it was directly recorded or derived from saved scan facts.
- 01
The hash appears in a researcher-curated malware database.
Verdict inputView chapterProvenanceObservedSourceResearcher malware databaseObserved at - 02
2 high-confidence signature or behavior rules matched this file.
Verdict inputView chapterProvenanceObservedSourceSignature and behavior rulesObserved at - 03
4 of 75 antivirus engines flagged the file, including ESET-NOD32 and Fortinet.
Verdict inputView chapterProvenanceObservedSourceAntivirus analysisObserved at - 04
Scanned file: 7c577b7fbd3519a282a447e15fbe11febd3b2708fc02d36bd591ea00821ddc37.zip — 7c577b7fbd3519a282a447e15fbe11febd3b2708fc02d36bd591ea00821ddc37
ProvenanceObservedSourceUploaded fileObserved at - 05
Observed process — /bin/gzip
ProvenanceObservedSourceIsolated runtime analysisObserved at - 06
Observed process — /bin/sh sh -c "\n\t\tinvoke-rc.d --quiet cups restart > /dev/null\n" logrotate_script "/var/log/cups/*log "
ProvenanceObservedSourceIsolated runtime analysisObserved at - 07
File written: coredump_filter — /proc/3553/coredump_filter
ProvenanceObservedSourceIsolated runtime analysisObserved at - 08
File written: 3553 — /tmp/hsperfdata_root/3553
ProvenanceObservedSourceIsolated runtime analysisObserved at
Detection sources at a glance
Category: generic-trojan
One or more independent reference databases matched this hash.
Signatures and behavior heuristics
A community signature or high-severity behavioral heuristic matched. Signatures identify known patterns; heuristics are strong leads but are not proof on their own.
- CP_Script_Inject_Detector
- MULTI_Dropper_Unknown_GitHubObfuscated_JAR
4 of 75 engines flagged this file
View all 75 engine results
PE structure
Not applicablePE structure analysis applies to Windows executable formats, not this file type.
How widely this file has been seen
Barely seen in the wild and first surfaced recently. 4 antivirus detections make that low prevalence materially relevant, but rarity alone is not proof of malware.
Fingerprint and provenance
- File name
- 7c577b7fbd3519a282a447e15fbe11febd3b2708fc02d36bd591ea00821ddc37.zip
- Format
- JAR
- Code signing
- Not applicable to this file type
- Size
- 5.3 MB
- Last analyzed
- Sep 27, 2026, 7:35 AM UTC
7c577b7fbd3519a282a447e15fbe11febd3b2708fc02d36bd591ea00821ddc37Safety & FAQ
Complete recovery guidance and answers for the next decision.
What to do now
This file is dangerous. Treat it as harmful and remove it.
- Recovery step 01
Don't open or extract this archive. Delete this archive from the device, then empty the Recycle Bin or Trash.
- Recovery step 02
If you already opened or extracted it, disconnect from the internet and start with a full antivirus scan or Microsoft Defender Offline scan. If compromise is suspected or the problem persists, use a reputable second-opinion scanner and follow incident-recovery or clean-reinstall guidance.
- Recovery step 03
If you typed any passwords while it was open, change them from a device you trust.
- Recovery step 04
Get a fresh copy from the original trusted source and verify its exact hash when possible.
Safety FAQ
Direct answers grounded in the saved verdict and evidence in this report.
Is this file malware?
What is this file?
How many antivirus engines detected this file?
I already downloaded and opened or extracted this file — what should I do?
How do I remove this file?
What kind of malware is this file?
Has this file been seen before?
What is the SHA-256 hash of this file?
How up to date is this analysis of this file?
Community
Member reviews and reports for this exact file hash.