Suspicious
Unsigned JDownloader installer shows mixed AV signals with process injection behavior but benign drops and no malicious runtime verdicts.
de8b2bdfc61d635853…5b502bd95eThe reasoning behind this verdict
The MT AI Engine weighs every signal from this scan — antivirus detections, sandbox behaviour, code signing, prevalence and historical matches — to reach a single, evidence-based verdict.
The file matches a known legitimate installer for JDownloader, which uses install4j and extracts Java runtime components. Tier-1 detections are generic (FileRepMalware) common for recent files, outweighed by 14 clean tier-1 scans. Process injection (T1055) into svchost and LSASS heuristic are red flags but lack corroboration from sandbox verdicts or drops. Unsigned status and new age contribute to caution without strong malicious consensus.
Each signal cites a concrete token from the evidence the arbiter saw — engine name, MITRE technique, signer string, or an exact count.
tier1FamilyConsensus.family='filerepmalware' (2 engines: Avast/AVG)
triggeredHeuristics[0].rule='MalwareTips.Synth.ProcessInjection' fired=true severity=high evidence='svchost.exe -k LocalSystemNetworkRestricted -p'
behaviour.filesWritten includes 'i4jruntime.jar' 'flatlaf.jar' 'java.exe -version'
engines.tier1Malicious=3 vs tier1ReportedClean=14 (e.g., ESET-NOD32, Kaspersky, BitDefender undetected)
droppedChildren.hasMaliciousChild=false (10 unknown)
- 14 tier-1 engines clean (ESET, Kaspersky, etc.)
- Benign installer drops (install4j, JRE)
- No malicious sandbox verdict
- No malicious contacted hosts/children
- Filename matches legit JDownloader installer
- Unsigned executable
- Recent first submission (2 days)
- Process injection (T1055) into svchost
- LSASS-targeting heuristic
- 3 tier-1 malicious detections
- Generic 'FileRepMalware' labels
Treat as potentially risky due to heuristics and detections; obtain from trusted official source and scan thoroughly. Avoid if possible until more scans agree clean.
What this file does
What it attempted when executed in an isolated sandbox
High concern: Hides inside another running program to evade antivirus.
High concern: Talks to a remote server to take commands or send out your data.
High concern: Downloads more malware onto your PC.
High concern: Hijacks how Windows loads programs so it runs automatically.
Moderate concern: Obfuscates or packs its code to avoid detection.
Moderate concern: Runs hidden system commands (script or shell).
Moderate concern: Scans through your files and folders.
Translated from the file's technical behaviour during analysis. It never ran on your device.
What to do now
We couldn't fully clear this file. Treat it with caution.
Don't run it unless you're certain it came from a source you trust.
Check where you got it — an email attachment or a random download link is a red flag.
If you're unsure, delete it. You can always re-download a clean copy from the official source.
If you're still unsure, scan it again in a day or two — detections often catch up on newer files.
filerepmalware corroborated by 1 source
- VT (75 engines)filerepmalware
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.
- C:\Users\<USER>\AppData\Local\Temp\tmp11FA.exe
- C:\Users\<USER>\AppData\Local\install4j\t\i4j_nlog_1.log
- C:\Users\<USER>\AppData\Local\install4j\t\e4j4987.tmp_dir1778084974\i4jruntime.jar
- C:\Users\<USER>\AppData\Local\install4j\t\e4j4987.tmp_dir1778084974\i4jparams.conf
- C:\Users\<USER>\AppData\Local\install4j\t\e4j4987.tmp_dir1778084974\i4j_extf_2_69g5ss_14qfchv.png
- C:\Users\<USER>\AppData\Local\install4j\t\e4jtw29889004
- C:\Users\<USER>\AppData\Local\install4j\t\e4j4987.tmp_dir1778084974\jre.tar.gz
- C:\Program Files (x86)\JDownloader\i4j_writeperm_test
- C:\Program Files (x86)\JDownloader
- A9A48A31
- Global\OneSettingQueryMutex+compat+encapsulation
Files this sample writes at runtime
This file drops 10 children at runtime. None are currently flagged malicious in our cache.
- da63081db591b7346d44…129e67Never scannednever seen before
- 48a4a9a7ebca4f7b8840…9533ccNever scannednever seen before
- 71c44233dd548b0e5042…06ad15Never scannednever seen before
- d816710152ba53e1a1a5…9ddfdeNever scannednever seen before
- 231290d6ac51b2b5639f…ec68a9Never scannednever seen before
- 34833b22dff8186f7920…4af4cbNever scannednever seen before
- 073ed831ed3eadfd87f4…998093Never scannednever seen before
- 652479f4613baa3782ac…7df640Never scannednever seen before
- 88c0cddf6b8b3e28d548…fd495cNever scannednever seen before
- bedcce48ca63cc72b24b…323c5aNever scannednever seen before
YARA & heuristic rule matches
A researcher-curated or high-severity heuristic rule matched this sample. These rules target specific malware families and are near-definitive.
MITRE T1055 (Process Injection) observed — CreateRemoteThread / APC / reflective-DLL injection. The payload is being smuggled into a legitimate process to bypass AV hooks.
EvidenceC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -pSandbox observed process activity targeting LSASS (Windows credential store). Legitimate software has no business reading LSASS memory — this is Mimikatz-shape behaviour.
EvidenceC:\Windows\system32\lsass.exe
9 detections across 75 engines
Section entropy & packers
Section-level entropy and packer detection from the PE header. Nothing suspicious here — entropy is within the normal range for unpacked code.
How widely this file has been seen
Moderate prevalence — neither rare nor common. No strong prior applies.
Forensic fingerprint
- File name
- JDownloader2Setup_windows-x86_v11_0_29.exe
- Size
- 83.12 MB
- MIME type
- (unknown)
- Detected type
- Win32 EXE
- SHA-256
- de8b2bdfc61d63585329b8cfca2a012476b46387435410b995aeae5b502bd95e
- MD5
- d3b398a757b424f91e645985ade00516
- SHA-1
- c5997e6a28a46041180780eb52842b668a65e4e2
- PE imphash
- cebbab50025aad300d9290d50864f4ef
- First seen (VT)
- 5/6/2026, 4:28:13 AM
- Last analysis (VT)
- 5/8/2026, 7:36:02 AM
- First scan (MalwareTips)
- 5/8/2026, 7:33:43 AM
- Last scan (MalwareTips)
- 5/8/2026, 1:16:29 PM
- Community reputation
- -1flagged
Safety FAQ
Common questions about JDownloader2Setup_windows-x86_v11_0_29.exe, answered from the scan data above.
- JDownloader2Setup_windows-x86_v11_0_29.exe is suspicious — treat it as unsafe until you're sure. 9 of 75 antivirus engines flag it, which isn't a strong consensus but is enough to be cautious. Don't run it unless you fully trust where it came from, and prefer downloading the software fresh from its official site.
- JDownloader2Setup_windows-x86_v11_0_29.exe is a Windows executable program, about 83.1 MB. We identify a file by its cryptographic hash rather than its name, because the same filename can be reused by completely different files — the hash below is the reliable fingerprint.
- 9 of 75 antivirus engines flagged JDownloader2Setup_windows-x86_v11_0_29.exe, 9 of them as outright malicious. A small number of detections can include false positives, so we weigh which engines flagged it and what else the file does, not just the raw count.
- Act quickly. 1) Disconnect the device from the internet to stop the malware communicating or spreading. 2) Run a full scan with reputable anti-malware software (such as Malwarebytes) and quarantine everything it finds. 3) Change your important passwords from a DIFFERENT, clean device — many threats log keystrokes or steal saved credentials. 4) If you bank or shop on this device, watch closely for fraud and alert your bank. 5) For a confirmed infection, the most reliable fix is to back up your personal files and reinstall the operating system for a clean start.
- To remove JDownloader2Setup_windows-x86_v11_0_29.exe: 1) restart into Safe Mode (Safe Mode with Networking if you need to download a tool) so the malware doesn't auto-start. 2) Run a full scan with reputable anti-malware software and let it quarantine or delete the detections. 3) Delete the original JDownloader2Setup_windows-x86_v11_0_29.exe file and empty the Recycle Bin/Trash. 4) Check your browser extensions, startup items, and scheduled tasks for anything unfamiliar. 5) Reboot and scan again to confirm it's gone. If detections keep coming back, a clean operating-system reinstall is the most dependable cure.
- The SHA-256 hash of JDownloader2Setup_windows-x86_v11_0_29.exe is de8b2bdfc61d63585329b8cfca2a012476b46387435410b995aeae5b502bd95e, and its MD5 is d3b398a757b424f91e645985ade00516. This hash is the file's unique fingerprint — two files with the same SHA-256 are identical. Use it to confirm you're looking at exactly this file (not just one with the same name) when comparing against antivirus databases or a download's published checksum.
- This report reflects the scan run on May 8, 2026. Because a file's hash never changes, the identity of JDownloader2Setup_windows-x86_v11_0_29.exe is fixed — but antivirus coverage improves over time, so a file that looks clean today can pick up detections later (and vice-versa). If you need the latest picture, MalwareTips staff can re-run the analysis from scratch.
Reviews & malware reports(0)
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