MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f903de8d931dc1d79ca65dfefc5efd7bfffe947a06ecb71c780dc32791b3edab. 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: 8


Intelligence 8 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f903de8d931dc1d79ca65dfefc5efd7bfffe947a06ecb71c780dc32791b3edab
SHA3-384 hash: a8da598333669f543fe79af8652ed8c057b50c55be0169ee70dd86a234a325eec80da2ebd6324bae637ba59665f74396
SHA1 hash: 3a058208173ce9661466625f9ba23e7e6b6c2298
MD5 hash: 24c92abbf534b78aab60850fca00adea
humanhash: delaware-rugby-pennsylvania-william
File name:kryptonclient-5.1.jar
Download: download sample
Signature SilentNet
Create hunting rule
File size:2'512'359 bytes
First seen:2026-06-19 09:01:48 UTC
Last seen:Never
File type:Java file jar
MIME type:application/zip
ssdeep 49152:DAie5Ok5kFEe2wFjmUfocupJUlcd3QnWOyEoqqmznaZ8vvqdssSji5d:kiegkKEg4pdgWOTJzndvqdsf+5d
TLSH T140C52313A05DF87CDDBA963AF235CF62583426B4914B723E2B3806D92CDA4EB474934D
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 :
110
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
kryptonclient-5.1.jar
Verdict:
Malicious activity
Analysis date:
2026-06-19 09:00:58 UTC
Tags:
silentnet stealer etherhiding evasion python arch-exec openssl tool
Link:
https://app.any.run/tasks/b6277f3a-3dcc-4d79-84a7-e38c960db3c1

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/71217/
Verdict:
Clean
Score:
89.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a3505491548daf709f7ceb1
Tags:
n/a
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
anti-debug obfuscated
Link:
https://www.filescan.io/uploads/6a3505be62d0679105f89fd5/reports/9b0f77b2-5383-43ec-8b2c-218f72682db1/overview
Verdict:
Suspicious
Link:
https://www.hybrid-analysis.com/sample/f903de8d931dc1d79ca65dfefc5efd7bfffe947a06ecb71c780dc32791b3edab
Verdict:
Malicious
File Type:
jar
First seen:
2026-06-19T06:07:00Z UTC
Last seen:
2026-06-19T08:01:00Z UTC
Hits:
~10
Detections:
HEUR:Trojan.Java.Generic
Link:
https://opentip.kaspersky.com/f903de8d931dc1d79ca65dfefc5efd7bfffe947a06ecb71c780dc32791b3edab/results?tab=lookup
Result
Threat name:
n/a
Detection:
suspicious
Classification:
n/a
Score:
22 / 100
Link:
https://www.joesandbox.com/analysis/1930956
Signature
Joe Sandbox ML detected suspicious sample
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1930956 Sample: kryptonclient-5.1.jar Startdate: 19/06/2026 Architecture: WINDOWS Score: 22 12 Joe Sandbox ML detected suspicious sample 2->12 6 cmd.exe 2 2->6         started        process3 process4 8 java.exe 3 6->8         started        10 conhost.exe 6->10         started       
Score:
0%
Verdict:
Benign
File Type:
ARCHIVE
Link:
https://malprob.io/report/f903de8d931dc1d79ca65dfefc5efd7bfffe947a06ecb71c780dc32791b3edab
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f903de8d931dc1d79ca65dfefc5efd7bfffe947a06ecb71c780dc32791b3edab/
Verdict:
Malicious
Threat:
Family.SILENTNET
Link:
https://tip.neiki.dev/file/f903de8d931dc1d79ca65dfefc5efd7bfffe947a06ecb71c780dc32791b3edab
Threat name:
ByteCode-JAVA.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-06-19 09:01:01 UTC
File Type:
Binary (Archive)
Extracted files:
325
AV detection:
5 of 24 (20.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7eb55dmtdxa5phfglx7pyxx5pp775fd2a3wlohdybxbspent5wvq._file
Result
Malware family:
silentnet
Create hunting rule
Score:
  10/10
Tags:
family:silentnet stealer
Link:
https://tria.ge/reports/260619-kzm8jsey8n/
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/f903de8d931dc1d79ca65dfefc5efd7bfffe947a06ecb71c780dc32791b3edab

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

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/71217/

Comments