MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ecd7871c7cf0efcb018ba4beced8dc9b5e48ca48794160aae45c735b5e3d75be. 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: 7


Intelligence 7 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ecd7871c7cf0efcb018ba4beced8dc9b5e48ca48794160aae45c735b5e3d75be
SHA3-384 hash: ec4842a83da79f16fd36bce2ac6efe720d4cda1023b47b8acb818a1157f7b1925b5ca63c21afed9b445972c90edbdd0f
SHA1 hash: a650a523428ef7654705dd5c9255703d33c9411c
MD5 hash: 712ed2b7a8f0b5c118d76cb790f37fcb
humanhash: arizona-september-iowa-east
File name:KryptonClient-1.21.jar
Download: download sample
Signature SilentNet
Create hunting rule
File size:17'135'188 bytes
First seen:2026-07-01 09:03:04 UTC
Last seen:Never
File type:Java file jar
MIME type:application/zip
ssdeep 393216:voLiNDpB2GjpnKlc/HZxjiOpryWq2PTYjtbhPU:ZlBJjpnKuH/jI2PTe9M
TLSH T1950733E6990A00579360546B4B7ED437C4CE9E83A5F03A3D126DEB9FA868B770713C93
TrID 57.4% (.JAR) Java Archive (13500/1/2)
25.5% (.KMZ) Google Earth saved working session (6000/1/1)
17.0% (.ZIP) ZIP compressed archive (4000/1)
Magika jar
Reporter burger
Tags:jar SilentNet

Intelligence

File Origin
# of uploads :
1
# of downloads :
111
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
KryptonClient-1.21.jar
Verdict:
Malicious activity
Analysis date:
2026-06-29 12:10:53 UTC
Tags:
etherhiding silentnet stealer python evasion arch-exec arch-doc openssl tool
Link:
https://app.any.run/tasks/04932949-5a82-493f-8d7b-d0ba86fd35f0

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/72561/
Verdict:
Malicious
Score:
70%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a4260c486bc95245bfa9b60
Tags:
shellcode corrupt
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/6a44d7f4d1842f4a6f29500f/reports/735da77e-6da1-425e-9ce6-83cc92f3f056/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/ecd7871c7cf0efcb018ba4beced8dc9b5e48ca48794160aae45c735b5e3d75be
Verdict:
Clean
File Type:
jar
Link:
https://opentip.kaspersky.com/ecd7871c7cf0efcb018ba4beced8dc9b5e48ca48794160aae45c735b5e3d75be/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/1935982
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)
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)
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: 1935982 Sample: KryptonClient-1.21.jar Startdate: 01/07/2026 Architecture: WINDOWS Score: 100 131 www.google.com 2->131 133 thisisafalsepositive.st 2->133 135 6 other IPs or domains 2->135 159 Suricata IDS alerts for network traffic 2->159 161 Multi AV Scanner detection for dropped file 2->161 163 Yara detected SilentNet 2->163 165 8 other signatures 2->165 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        22 conhost.exe 12->22         started        181 Loading BitLocker PowerShell Module 14->181 24 conhost.exe 14->24         started        26 conhost.exe 17->26         started        process6 signatures7 167 Found many strings related to Crypto-Wallets (likely being stolen) 19->167 28 javaw.exe 884 19->28         started        process8 dnsIp9 145 150.136.141.142, 443, 49722, 49731 ORACLE-BMC-31898-OracleCorporationUS United States 28->145 147 198.178.224.35, 443, 49720, 49729 LATITUDE-SH-LatitudeshUS United States 28->147 149 thisisafalsepositive.st 185.178.208.191, 443, 49724, 49726 DDOS-GUARDRU Russia 28->149 115 C:\Users\user\AppData\Local\...\winsound.pyd, PE32+ 28->115 dropped 117 C:\Users\user\AppData\...\vcruntime140_1.dll, PE32+ 28->117 dropped 119 C:\Users\user\AppData\...\vcruntime140.dll, PE32+ 28->119 dropped 121 623 other malicious files 28->121 dropped 32 python.exe 218 28->32         started        file10 process11 dnsIp12 123 151.101.64.175, 443, 49741 FASTLY-FastlyIncUS Canada 32->123 125 151.101.64.223, 443, 49735 FASTLY-FastlyIncUS Canada 32->125 127 2 other IPs or domains 32->127 83 C:\Users\user\AppData\...\tmph104f6y7.tmp, PE32+ 32->83 dropped 85 C:\Users\user\AppData\Local\...\winsound.pyd, PE32+ 32->85 dropped 87 C:\Users\user\AppData\...\vcruntime140_1.dll, PE32+ 32->87 dropped 89 32 other malicious files 32->89 dropped 151 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 32->151 153 Found many strings related to Crypto-Wallets (likely being stolen) 32->153 155 Tries to harvest and steal browser information (history, passwords, etc) 32->155 157 3 other signatures 32->157 37 pip.exe 32->37         started        39 python.exe 1088 32->39         started        44 python.exe 32->44         started        46 2 other processes 32->46 file13 signatures14 process15 dnsIp16 48 python.exe 37->48         started        52 conhost.exe 37->52         started        137 dualstack.python.map.fastly.net 151.101.0.223, 443, 49753 FASTLY-FastlyIncUS Canada 39->137 139 pypi.org 151.101.128.223, 443, 49752, 49756 FASTLY-FastlyIncUS Canada 39->139 99 C:\Users\user\AppData\Local\...\pip3.exe, PE32+ 39->99 dropped 101 C:\Users\user\AppData\Local\...\pip3.12.exe, PE32+ 39->101 dropped 103 C:\Users\user\AppData\Local\...\pip.exe, PE32+ 39->103 dropped 111 378 other malicious files 39->111 dropped 169 Suspicious powershell command line found 39->169 171 Uses schtasks.exe or at.exe to add and modify task schedules 39->171 173 Uses netsh to modify the Windows network and firewall settings 39->173 177 2 other signatures 39->177 54 conhost.exe 39->54         started        56 cmd.exe 39->56         started        141 142.251.156.119 GOOGLE-GoogleLLCUS United States 44->141 143 184.29.36.91 AKAMAI-AS-AkamaiTechnologiesIncUS United States 44->143 105 C:\Recovery\OEM\...\RuntimeBroker.exe, PE32+ 44->105 dropped 107 C:\Users\user\AppData\Local\...\stdole.py, Python 44->107 dropped 109 _78530B68_61F9_11D...A024580902_0_1_0.py, Python 44->109 dropped 113 4 other malicious files 44->113 dropped 175 Adds a directory exclusion to Windows Defender 44->175 58 powershell.exe 44->58         started        61 powershell.exe 44->61         started        63 powershell.exe 44->63         started        65 7 other processes 44->65 file17 signatures18 process19 dnsIp20 129 151.101.192.223, 443, 49758 FASTLY-FastlyIncUS Canada 48->129 91 C:\Users\user\AppData\Local\...\wsdump.exe, PE32+ 48->91 dropped 93 C:\Users\user\AppData\Local\...\win32wnet.pyd, PE32+ 48->93 dropped 95 C:\Users\user\AppData\Local\...\win32ts.pyd, PE32+ 48->95 dropped 97 545 other malicious files 48->97 dropped 67 cmd.exe 48->67         started        179 Loading BitLocker PowerShell Module 58->179 69 conhost.exe 58->69         started        71 conhost.exe 61->71         started        73 conhost.exe 63->73         started        75 conhost.exe 65->75         started        77 conhost.exe 65->77         started        79 conhost.exe 65->79         started        81 3 other processes 65->81 file21 signatures22 process23
Score:
0%
Verdict:
Benign
File Type:
ARCHIVE
Link:
https://malprob.io/report/ecd7871c7cf0efcb018ba4beced8dc9b5e48ca48794160aae45c735b5e3d75be
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ecd7871c7cf0efcb018ba4beced8dc9b5e48ca48794160aae45c735b5e3d75be/
Verdict:
Malicious
Threat:
Family.SILENTNET
Link:
https://tip.neiki.dev/file/ecd7871c7cf0efcb018ba4beced8dc9b5e48ca48794160aae45c735b5e3d75be
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=5tlyohd46dx4wamlus7m5wg4tnperssipfawbkxelrzvwxr5ow7a._file
Result
Malware family:
silentnet
Create hunting rule
Score:
  10/10
Tags:
family:silentnet stealer
Link:
https://tria.ge/reports/260701-k1chfacv2t/
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/ecd7871c7cf0efcb018ba4beced8dc9b5e48ca48794160aae45c735b5e3d75be

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/72561/

Comments