MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cdbb307c1d38bef013828b011246fbe3ed81fbead48c4cae37903e07fdcba5f6. 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

SHA256 hash:	cdbb307c1d38bef013828b011246fbe3ed81fbead48c4cae37903e07fdcba5f6
SHA3-384 hash:	ad912314c8125113d3d48db996fe4dca03f63c15ed7fc7a9c71289607317f7a6364ed483977eaab104381a91d534c105
SHA1 hash:	7308563f1ad366d75aa8f9fe8d2fb232b7d9c597
MD5 hash:	4afe2568583e206182256b9f7c0824f5
humanhash:	fruit-grey-sink-xray
File name:	Krypton V5.3.jar
Download:	download sample
Signature	SilentNet Create hunting rule
File size:	9'318'575 bytes
First seen:	2026-09-27 13:30:30 UTC
Last seen:	Never
File type:	jar
MIME type:	application/zip
ssdeep	196608:QIZMImvIuxkJPfuHKZLAujK/tswntzQFxJqVPUoU6dje9dry:nZMUuxkJPfuH8L1UXneXJ9oVjU+
TLSH	T1CB9633359DB12B2EDE438DE823E1F1A872EFCD206D35CE30045B4715D49D1DAAB261AB
TrID	57.4% (.JAR) Java Archive (13500/1/2) 25.5% (.USDZ) Universal Scene Description Zipped AR format (generic) (6000/1/1) 17.0% (.ZIP) ZIP compressed archive (4000/1)
Magika	jar
Reporter	C0RSA
Tags:	donutsmp jar minecraft SilentNet stealer

C0RSA

Fake "Krypton V5.3" pretending to be a hacked-client mod for the Minecraft server DonutSMP. Distributed via a Discord server (Sapphire Mods - ID "1383241206628352040")
Steals Minecraft/Microsoft session tokens and then drops a secondary stealer targeting browser data and crypto wallets.
C2 domain resolved at runtime from a Polygon smart contract (EtherHiding),
contract 0x9c0a507300fd902787bb193d80fca5ce6e1bff9a, fronted by DDoS-Guard.
Exfil via HTTP POST to /shard/prefireMc. Family: silentnet.

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

No detections

Malware family:

n/a

ID:

File name:

jar

Verdict:

Malicious activity

Analysis date:

2026-09-27 14:25:28 UTC

Tags:

silentnet stealer python evasion arch-exec arch-doc auto generic openssl tool

Link:

https://app.any.run/tasks/1b26a7c4-bb8c-4bda-8f52-fcd08c0f9f15

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/89305/

Verdict:

Unknown

Threat level:

2.5/10

Confidence:

100%

Link:

https://www.filescan.io/uploads/6ab9247c289a09f5b0791dc7/reports/4966b5f1-9d95-40e8-9df0-66c2751c7328/overview

Verdict:

Unknown

Link:

https://www.hybrid-analysis.com/sample/cdbb307c1d38bef013828b011246fbe3ed81fbead48c4cae37903e07fdcba5f6

Verdict:

Malicious

File Type:

jar

First seen:

2026-08-16T16:24:00Z UTC

Last seen:

2026-09-28T02:48:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/cdbb307c1d38bef013828b011246fbe3ed81fbead48c4cae37903e07fdcba5f6/results?tab=lookup

Score:

Verdict:

Benign

File Type:

Result

Malware family:

n/a

Score:

3/10

Tags:

n/a

Link:

https://tria.ge/reports/260927-rjjczszt7j/

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/cdbb307c1d38bef013828b011246fbe3ed81fbead48c4cae37903e07fdcba5f6

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

jar cdbb307c1d38bef013828b011246fbe3ed81fbead48c4cae37903e07fdcba5f6

(this sample)

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/89305/

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