MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4cbfb6caed8357f803dfc00600f778b53624f0b84964cfc8bc77b7854bedc0c7. 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: 6


Intelligence 6 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4cbfb6caed8357f803dfc00600f778b53624f0b84964cfc8bc77b7854bedc0c7
SHA3-384 hash: c50e03dd8c7b2397c0315f8ab982964c73bcbb4658c343811257ace0b098e361c62c1839efff83b18f498ade91ddabc4
SHA1 hash: 75916940fb75726ace2a3af791d4191e24e35200
MD5 hash: 02f4c69567902d3eff32e611f1138054
humanhash: foxtrot-cardinal-kentucky-hamper
File name:Krypton new.jar
Download: download sample
Signature SilentNet
Create hunting rule
File size:5'067'135 bytes
First seen:2026-07-19 11:33:21 UTC
Last seen:Never
File type:Java file jar
MIME type:application/zip
ssdeep 98304:IdHgQn6EN5wjB//AogrT0l3ltdLk1UXwUeWU9glNG/V7jfzzucDll/XDG:ICA5qnAogrgl37dL7wDWUeGBjnVDll/q
TLSH T1843633DD05819C45F1043F920E81D6AFB4E5D56D8BE2A6CA1C5DEF22F7FAD8C21B0922
TrID 77.1% (.JAR) Java Archive (13500/1/2)
22.8% (.ZIP) ZIP compressed archive (4000/1)
Magika jar
Reporter burger
Tags:jar SilentNet

Intelligence

File Origin
# of uploads :
1
# of downloads :
141
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/75193/
Verdict:
Clean
Score:
89.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a5cb610bcffb2c48cb78fed
Tags:
n/a
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/6a5cb60da40cbcacfbc83388/reports/f68f83f3-5539-45e3-a5d2-298841f8fc85/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/4cbfb6caed8357f803dfc00600f778b53624f0b84964cfc8bc77b7854bedc0c7
Verdict:
Malicious
File Type:
jar
First seen:
2026-06-25T05:42:00Z UTC
Last seen:
2026-07-21T01:23:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/4cbfb6caed8357f803dfc00600f778b53624f0b84964cfc8bc77b7854bedc0c7/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/1944756
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
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
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 SilentNet
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1944756 Sample: Krypton new.jar Startdate: 19/07/2026 Architecture: WINDOWS Score: 100 117 pypi.org 2->117 119 mr-b01.tm-azurefd.net 2->119 121 4 other IPs or domains 2->121 149 Suricata IDS alerts for network traffic 2->149 151 Multi AV Scanner detection for dropped file 2->151 153 Yara detected SilentNet 2->153 155 9 other signatures 2->155 12 cmd.exe 1 2->12         started        14 powershell.exe 2->14         started        17 powershell.exe 2->17         started        signatures3 process4 signatures5 19 java.exe 5 12->19         started        21 conhost.exe 12->21         started        169 Loading BitLocker PowerShell Module 14->169 23 conhost.exe 14->23         started        25 conhost.exe 17->25         started        process6 process7 27 javaw.exe 884 19->27         started        dnsIp8 129 132.145.155.63, 443, 49707, 49723 ORACLE-BMC-31898-OracleCorporationUS United States 27->129 131 198.178.224.35, 443, 49705, 49721 LATITUDE-SH-LatitudeshUS United States 27->131 133 185.178.208.191, 443, 49709, 49718 DDOS-GUARDRU Russia 27->133 101 C:\Users\user\AppData\Local\...\winsound.pyd, PE32+ 27->101 dropped 103 C:\Users\user\AppData\...\vcruntime140_1.dll, PE32+ 27->103 dropped 105 C:\Users\user\AppData\...\vcruntime140.dll, PE32+ 27->105 dropped 107 623 other malicious files 27->107 dropped 31 python.exe 218 27->31         started        file9 process10 dnsIp11 135 151.101.0.175, 443, 49731 FASTLY-FastlyIncUS Canada 31->135 137 pypi.org 151.101.0.223, 443, 49727, 49744 FASTLY-FastlyIncUS Canada 31->137 139 2 other IPs or domains 31->139 77 C:\Users\user\AppData\...\tmptb60i7ci.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 141 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 31->141 143 Tries to harvest and steal browser information (history, passwords, etc) 31->143 145 Writes to foreign memory regions 31->145 147 2 other signatures 31->147 36 pip.exe 31->36         started        38 python.exe 1088 31->38         started        42 python.exe 31->42         started        45 2 other processes 31->45 file12 signatures13 process14 dnsIp15 47 python.exe 36->47         started        50 conhost.exe 36->50         started        85 C:\Users\user\AppData\Local\...\pip3.exe, PE32+ 38->85 dropped 87 C:\Users\user\AppData\Local\...\pip3.12.exe, PE32+ 38->87 dropped 89 C:\Users\user\AppData\Local\...\pip.exe, PE32+ 38->89 dropped 97 378 other malicious files 38->97 dropped 159 Suspicious powershell command line found 38->159 161 Uses schtasks.exe or at.exe to add and modify task schedules 38->161 163 Uses netsh to modify the Windows network and firewall settings 38->163 167 2 other signatures 38->167 52 conhost.exe 38->52         started        123 150.136.141.142 ORACLE-BMC-31898-OracleCorporationUS United States 42->123 125 142.251.156.119 GOOGLE-GoogleLLCUS United States 42->125 127 23.222.125.27 AKAMAI-AS-AkamaiTechnologiesIncUS United States 42->127 91 C:\Recovery\OEM\...\RuntimeBroker.exe, PE32+ 42->91 dropped 93 C:\Users\user\AppData\Local\...\stdole.py, Python 42->93 dropped 95 _78530B68_61F9_11D...A024580902_0_1_0.py, Python 42->95 dropped 99 4 other malicious files 42->99 dropped 165 Adds a directory exclusion to Windows Defender 42->165 54 powershell.exe 42->54         started        57 powershell.exe 42->57         started        59 powershell.exe 42->59         started        61 7 other processes 42->61 file16 signatures17 process18 file19 109 C:\Users\user\AppData\Local\...\wsdump.exe, PE32+ 47->109 dropped 111 C:\Users\user\AppData\...\cffi-gen-src.exe, PE32+ 47->111 dropped 113 C:\Users\user\AppData\Local\...\win32wnet.pyd, PE32+ 47->113 dropped 115 520 other malicious files 47->115 dropped 157 Loading BitLocker PowerShell Module 54->157 63 conhost.exe 54->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 3 other processes 61->75 signatures20 process21
Score:
0%
Verdict:
Benign
File Type:
ARCHIVE
Link:
https://malprob.io/report/4cbfb6caed8357f803dfc00600f778b53624f0b84964cfc8bc77b7854bedc0c7
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4cbfb6caed8357f803dfc00600f778b53624f0b84964cfc8bc77b7854bedc0c7/
Threat name:
ByteCode-JAVA.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-06-24 21:43:23 UTC
File Type:
Binary (Archive)
Extracted files:
12
AV detection:
5 of 37 (13.51%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=js73nsxnqnl7qa67yadab53ywu3cj4fyjfsm7sf4o63yks7nyddq._file
Result
Malware family:
silentnet
Create hunting rule
Score:
  10/10
Tags:
family:silentnet stealer
Link:
https://tria.ge/reports/260719-nn4ypsas3r/
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/4cbfb6caed8357f803dfc00600f778b53624f0b84964cfc8bc77b7854bedc0c7

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:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/75193/

Comments