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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef201b4fcf5c63d24a28b43a625ab01cc9e2b7371417906d13f9cf8499fa7599. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


SilentNet


Vendor detections: 5


Intelligence 5 IOCs YARA 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ef201b4fcf5c63d24a28b43a625ab01cc9e2b7371417906d13f9cf8499fa7599
SHA3-384 hash: 7ab02fd606d4433b3ad46046802434bb4e8bb95786f92a4a685087f750508bda7adc224a0ecd647cfadc75fb862ea38e
SHA1 hash: a9ba5561c0b756b8a3bab2201c904ccad987fb24
MD5 hash: 4fd4240eeebc4aa0005e26f896e9eef0
humanhash: river-leopard-golf-cup
File name:simulatan-meteor-notifications-addon.jar
Download: download sample
Signature SilentNet
Create hunting rule
File size:2'032'595 bytes
First seen:2026-10-27 12:24:17 UTC
Last seen:Never
File type:Java file jar
MIME type:application/zip
ssdeep 49152:4HhvC+vY74IHXIIlK6nFOY5Qg/6y5+U/gU1QHJp5nlnR:qs+w794IlK6MYqgCXZnlR
TLSH T19D9533FF163BC6FA6A81737BB6AFE9A5D878A64CC116F18F3C105339DA480640D42709
TrID 77.1% (.JAR) Java Archive (13500/1/2)
22.8% (.ZIP) ZIP compressed archive (4000/1)
Magika jar
Reporter GhostTypes
Tags:jar SilentNet


Avatar
GhostTypes
Fake "Meteor Notifications" addon (impersonates simulatan/meteor-notifications-addon) from malware clone site meteoraddons.net/downloads/. Re-stamped loader: 8 obfuscated net/fabric/ classes + decoy blob assets/pjveasko.cfg. bbmmd: sn-loader-v3 gen-5. C1: Polygon contract 0x9c0a507300fd902787bb193d80fca5ce6e1bff9a, fallback thisisafalsepositive.st, beacon /shard/prefireMc, campaign UUID a2ff6489-0b60-4571-bff5-537d5a173c45. Origin: github.com/bedful39-creator/Meteor-Sites downloads/ dir.

Intelligence

File Origin
# of uploads :
1
# of downloads :
69
Origin country :
FR FR
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
jar
Verdict:
Malicious activity
Analysis date:
2026-10-27 13:42:43 UTC
Tags:
silentnet stealer etherhiding evasion auto python arch-exec arch-doc generic openssl tool
Link:
https://app.any.run/tasks/89b4ed9f-20db-459b-bf24-6d953fde93c4

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/95468/
Verdict:
Clean
Score:
89.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ae097fe49621540087beb9c
Tags:
n/a
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
masquerade
Link:
https://www.filescan.io/uploads/6ae0983d27b9f785db07951b/reports/ba1c3806-5ddd-44b7-a03c-7c4dcb6cafd9/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/ef201b4fcf5c63d24a28b43a625ab01cc9e2b7371417906d13f9cf8499fa7599
Verdict:
Unknown
File Type:
jar
Link:
https://opentip.kaspersky.com/ef201b4fcf5c63d24a28b43a625ab01cc9e2b7371417906d13f9cf8499fa7599/results?tab=lookup
Result
Threat name:
SilentNet
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1992754
Signature
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Creates a thread in another existing process (thread injection)
Exploit detected, runtime environment starts unknown processes
Found many strings related to Crypto-Wallets (likely being stolen)
Modifies the windows firewall
Multi AV Scanner detection for dropped file
Potential Privilege Escalation using Task Scheduler highest RunLevel
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Rare Remote Thread Creation By Uncommon Source Image
Sigma detected: Schedule system process
Sigma detected: Schtasks Creation Or Modification With SYSTEM Privileges
Suricata IDS alerts for network traffic
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Unusual module load detection (module proxying)
Uses netsh to modify the Windows network and firewall settings
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected Python Keylogger
Yara detected SilentNet
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1992754 Sample: simulatan-meteor-notificati... Startdate: 27/10/2026 Architecture: WINDOWS Score: 100 117 files.pythonhosted.org 2->117 119 pypi.org 2->119 121 2 other IPs or domains 2->121 153 Suricata IDS alerts for network traffic 2->153 155 Multi AV Scanner detection for dropped file 2->155 157 Yara detected SilentNet 2->157 159 9 other signatures 2->159 12 cmd.exe 1 2->12         started        14 powershell.exe 2->14         started        16 powershell.exe 2->16         started        signatures3 process4 process5 18 java.exe 5 12->18         started        21 conhost.exe 12->21         started        23 conhost.exe 14->23         started        25 conhost.exe 16->25         started        signatures6 151 Found many strings related to Crypto-Wallets (likely being stolen) 18->151 27 javaw.exe 884 18->27         started        process7 dnsIp8 131 104.20.46.180, 443, 49714 CLOUDFLARENET-CloudflareIncUS Canada 27->131 133 185.178.208.191, 443, 49716, 49723 DDOS-GUARDRU Russia 27->133 109 C:\Users\user\AppData\Local\...\winsound.pyd, PE32+ 27->109 dropped 111 C:\Users\user\AppData\...\vcruntime140_1.dll, PE32+ 27->111 dropped 113 C:\Users\user\AppData\...\vcruntime140.dll, PE32+ 27->113 dropped 115 623 other malicious files 27->115 dropped 31 python.exe 218 27->31         started        file9 process10 dnsIp11 135 64.31.48.194, 443, 49728 LIMESTONENETWORKS-LimestoneNetworksIncUS Japan 31->135 137 198.178.224.35, 443, 49726 LATITUDE-SH-LatitudeshUS United States 31->137 139 4 other IPs or domains 31->139 77 C:\Users\user\AppData\...\tmpx345194d.tmp, PE32+ 31->77 dropped 79 C:\Users\user\AppData\Local\...\winsound.pyd, PE32+ 31->79 dropped 81 C:\Users\user\AppData\...\vcruntime140_1.dll, PE32+ 31->81 dropped 83 32 other malicious files 31->83 dropped 143 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 31->143 145 Found many strings related to Crypto-Wallets (likely being stolen) 31->145 147 Tries to harvest and steal browser information (history, passwords, etc) 31->147 149 3 other signatures 31->149 36 pip.exe 31->36         started        38 python.exe 1118 31->38         started        43 python.exe 31->43         started        45 2 other processes 31->45 file12 signatures13 process14 dnsIp15 47 python.exe 36->47         started        51 conhost.exe 36->51         started        123 dualstack.python.map.fastly.net 151.101.128.223, 443, 49746 FASTLY-FastlyIncUS Canada 38->123 93 C:\Users\user\AppData\Local\...\pip3.exe, PE32+ 38->93 dropped 95 C:\Users\user\AppData\Local\...\pip3.12.exe, PE32+ 38->95 dropped 97 C:\Users\user\AppData\Local\...\pip.exe, PE32+ 38->97 dropped 105 390 other malicious files 38->105 dropped 161 Suspicious powershell command line found 38->161 163 Uses schtasks.exe or at.exe to add and modify task schedules 38->163 165 Uses netsh to modify the Windows network and firewall settings 38->165 169 2 other signatures 38->169 53 conhost.exe 38->53         started        125 142.251.157.119 GOOGLE-GoogleLLCUS United States 43->125 127 104.16.249.249 CLOUDFLARENET-CloudflareIncUS Canada 43->127 129 2 other IPs or domains 43->129 99 C:\Recovery\OEM\...\RuntimeBroker.exe, PE32+ 43->99 dropped 101 C:\Users\user\AppData\Local\...\stdole.py, Python 43->101 dropped 103 _78530B68_61F9_11D...A024580902_0_1_0.py, Python 43->103 dropped 107 4 other malicious files 43->107 dropped 167 Adds a directory exclusion to Windows Defender 43->167 55 powershell.exe 43->55         started        57 powershell.exe 43->57         started        59 powershell.exe 43->59         started        61 12 other processes 43->61 file16 signatures17 process18 dnsIp19 141 151.101.192.223, 443, 49755 FASTLY-FastlyIncUS Canada 47->141 85 C:\Users\user\AppData\Local\...\wsdump.exe, PE32+ 47->85 dropped 87 C:\Users\user\AppData\...\cffi-gen-src.exe, PE32+ 47->87 dropped 89 C:\Users\user\AppData\Local\...\win32wnet.pyd, PE32+ 47->89 dropped 91 456 other malicious files 47->91 dropped 63 conhost.exe 55->63         started        65 conhost.exe 57->65         started        67 conhost.exe 59->67         started        69 conhost.exe 61->69         started        71 conhost.exe 61->71         started        73 conhost.exe 61->73         started        75 8 other processes 61->75 file20 process21
Score:
0%
Verdict:
Benign
File Type:
ARCHIVE
Link:
https://malprob.io/report/ef201b4fcf5c63d24a28b43a625ab01cc9e2b7371417906d13f9cf8499fa7599
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ef201b4fcf5c63d24a28b43a625ab01cc9e2b7371417906d13f9cf8499fa7599/
Threat name:
ByteCode-JAVA.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-10-27 12:25:36 UTC
File Type:
Binary (Archive)
Extracted files:
11
AV detection:
5 of 24 (20.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=54qbwt6plrr5esriwq5gewvqdte6fnzxcqlza3it7hhyjgp2owmq._file
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/261027-pk7qvstxez/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/ef201b4fcf5c63d24a28b43a625ab01cc9e2b7371417906d13f9cf8499fa7599

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:JAVA_Malware_Unknown_ForgeAuto_03a7ca91
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (class, etat binaire)
Rule name:JAVA_Malware_Unknown_ForgeAuto_0ece8eba
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (class, etat binaire)
Rule name:JAVA_Malware_Unknown_ForgeAuto_1fde0fe5
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (class, etat binaire)
Rule name:JAVA_Malware_Unknown_ForgeAuto_50b45f1d
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (class, etat binaire)
Rule name:JAVA_Malware_Unknown_ForgeAuto_5888acd8
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (class, etat binaire)
Rule name:JAVA_Malware_Unknown_ForgeAuto_61773a0a
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (class, etat binaire)
Rule name:SilentNet_CharArith_Obfuscation
Create hunting rule
Author:NyxIndius
Description:Detects Java class with char-arithmetic string obfuscation (ldc/sipush A - B, isub, i2c) in volume
Rule name:SilentNet_FakeFabric_Jar_Container
Create hunting rule
Author:NyxIndius
Description:Detects fake Fabric mod JAR with net/fabric/ package (not net/fabricmc/) and random class names, associated with SilentNet loader/stealer
Rule name:SilentNet_FakeFabric_Metadata
Create hunting rule
Author:NyxIndius
Description:Detects MANIFEST or fabric.mod.json pointing to a net.fabric.* entrypoint (fake Fabric mod, SilentNet)
Rule name:SilentNet_FakeFabric_Mod_Jar
Create hunting rule
Author:NyxIndius
Description:Detects SilentNet Minecraft stealer fake Fabric mod JAR: fabric.mod.json plus random-named classes directly under com/github/ or net/fabric/ (incl. inner classes), without net/fabricmc/
Rule name:SilentNet_Loader_Class
Create hunting rule
Author:NyxIndius
Description:Detects SilentNet Java loader/stealer class: char-arith obfuscation plus launcher, dropper, custom HTTPS/DoH client or Minecraft session reflection

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

SilentNet

Java file jar ef201b4fcf5c63d24a28b43a625ab01cc9e2b7371417906d13f9cf8499fa7599

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/95468/

Comments