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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1b1b28ef5972b7b57b56660d25c25b2c692ccbcc3904b6cb9f5fc89ea0a64f4b. 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 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1b1b28ef5972b7b57b56660d25c25b2c692ccbcc3904b6cb9f5fc89ea0a64f4b
SHA3-384 hash: 016f264a57034fb90bb2ec6a769ada8fda7a68377e22ff671262e920778aefb5861754e3a396fa9136bca9fe18955c33
SHA1 hash: 0cd2abfe522f6b07cc4795503f5e3ad48aca29c8
MD5 hash: 26b0d7c56f3f26bf9b213668a26ac0ed
humanhash: video-summer-alanine-mountain
File name:166aa306-f591-4493-8f48-b38a591da0e6-frostclient.jar
Download: download sample
Signature SilentNet
Create hunting rule
File size:6'369'225 bytes
First seen:2026-10-03 14:00:03 UTC
Last seen:Never
File type:Java file jar
MIME type:application/zip
ssdeep 196608:X/qDeZe832VmajwuhUw6OFuA/mV/xLk957fX9vjwt:PG8GoajwWFuwMxLknvZct
TLSH T1C35633B6170D5FACA85D0BF67488BE13C21621842828CB71FFF58376E484A3B66D6357
TrID 77.1% (.JAR) Java Archive (13500/1/2)
22.8% (.ZIP) ZIP compressed archive (4000/1)
Magika jar
Reporter wok
Tags:jar java Python SilentNet

Intelligence

File Origin
# of uploads :
1
# of downloads :
120
Origin country :
AT AT
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
166aa306-f591-4493-8f48-b38a591da0e6-frostclient.jar
Verdict:
Malicious activity
Analysis date:
2026-10-03 13:41:49 UTC
Tags:
silentnet stealer python evasion arch-exec arch-doc auto generic
Link:
https://app.any.run/tasks/50bd7359-1087-492d-a39a-8207e9f6233d

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/90451/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.81540128.11161173.UNOFFICIAL
Create hunting rule

Verdict:
Clean
Score:
89.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6acf1d9a2e5d8a93d8157256
Tags:
n/a
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/6ac10a84ba3d77c405ace474/reports/581fa2d9-4663-48c3-9efe-8195cea20dd3/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/1b1b28ef5972b7b57b56660d25c25b2c692ccbcc3904b6cb9f5fc89ea0a64f4b
Verdict:
Malicious
File Type:
jar
First seen:
2026-09-23T21:47:00Z UTC
Last seen:
2026-10-04T18:31:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/1b1b28ef5972b7b57b56660d25c25b2c692ccbcc3904b6cb9f5fc89ea0a64f4b/results?tab=lookup
Score:
0%
Verdict:
Benign
File Type:
ARCHIVE
Link:
https://malprob.io/report/1b1b28ef5972b7b57b56660d25c25b2c692ccbcc3904b6cb9f5fc89ea0a64f4b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/1b1b28ef5972b7b57b56660d25c25b2c692ccbcc3904b6cb9f5fc89ea0a64f4b/
Threat name:
ByteCode-JAVA.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-09-23 21:49:24 UTC
File Type:
Binary (Archive)
Extracted files:
12
AV detection:
9 of 24 (37.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=dmnsr32zok33k62wmygslqs3fruszs6mheclns47l7ej5ifgj5fq._file
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/261003-rbdgrs1zbx/
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/1b1b28ef5972b7b57b56660d25c25b2c692ccbcc3904b6cb9f5fc89ea0a64f4b

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:MULTI_Dropper_Unknown_GitHubObfuscated_JAR
Create hunting rule
Author:Marjoriefort
Description:JAR dropper : classes obfusquees a noms random sous com/github/ (densite >= 4) - famille du resolver GitHub
Reference:Veille glissante 2026-09-17_22 / grappe 21 JAR
Rule name:MULTI_PUA_FabricMod_PackageIcon_LicenseGithub
Create hunting rule
Author:Marjoriefort
Description:Mod Minecraft Fabric (structure package + LICENSE_github) soumis en masse - PUA/mods, pattern de soumission
Reference:misses_archive / grappe 9 archives

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 1b1b28ef5972b7b57b56660d25c25b2c692ccbcc3904b6cb9f5fc89ea0a64f4b

(this sample)

anyrun
any.run
https://app.any.run/tasks/50bd7359-1087-492d-a39a-8207e9f6233d
  
Dropping
SilentNet
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/90451/

Comments