MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f121f41af4536f7dbc46461664fa38f128e25cf367a6c00a5bfbe308f6b1ba9a. 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: 4

Intelligence 4 IOCs YARA 11 File information Comments

SHA256 hash:	f121f41af4536f7dbc46461664fa38f128e25cf367a6c00a5bfbe308f6b1ba9a
SHA3-384 hash:	6ef84e0ec5e6e595f40cd49db8d6117fe502ca409dc0ec74f72b36d41c6b4672e8b0133df14985bad42e6ba8aab8ea9f
SHA1 hash:	dc918beb6424097462548040a646fda06ec3285b
MD5 hash:	8c7e89c1a82c1975c47432482376937f
humanhash:	minnesota-yellow-jupiter-connecticut
File name:	DonutDupe.jar
Download:	download sample
Signature	SilentNet Create hunting rule
File size:	66'050 bytes
First seen:	2026-10-12 15:27:10 UTC
Last seen:	Never
File type:	jar
MIME type:	application/zip
ssdeep	1536:raAGuinulbrRObutr3vy6z8+7n1mR2p1VVwSoTck1YHcx1:LcHbmvZz8+Z22pNMTck1Y8H
TLSH	T1C253F159EB8C9C19EE2F80B27760AD94B859384E2ACF60568C67614C4C2217F73153FB
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 :

# of downloads :

Origin country :

Vendor Threat Intelligence

No detections

Malware family:

n/a

ID:

File name:

DonutDupe.jar

Verdict:

Malicious activity

Analysis date:

2026-10-12 15:24:34 UTC

Tags:

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

Link:

https://app.any.run/tasks/9c518f92-cc97-48c6-aa7a-7a274651667c

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/91552/

Verdict:

Clean

Score:

89.3%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6ad0fe65f4e17c78f715d598

Tags:

n/a

Verdict:

Unknown

Threat level:

2.5/10

Confidence:

100%

Link:

https://www.filescan.io/uploads/6accfc5508c1ae72c99b8453/reports/ffb1715b-714b-433e-b3fa-ee59a36423e0/overview

Verdict:

Unknown

Link:

https://www.hybrid-analysis.com/sample/f121f41af4536f7dbc46461664fa38f128e25cf367a6c00a5bfbe308f6b1ba9a

Verdict:

Unknown

File Type:

jar

Link:

https://opentip.kaspersky.com/f121f41af4536f7dbc46461664fa38f128e25cf367a6c00a5bfbe308f6b1ba9a/results?tab=lookup

Score:

Verdict:

Benign

File Type:

Result

Malware family:

n/a

Score:

3/10

Tags:

n/a

Link:

https://tria.ge/reports/261012-svt5astt4m/

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/f121f41af4536f7dbc46461664fa38f128e25cf367a6c00a5bfbe308f6b1ba9a

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:	SilentNet_CharArith_Obfuscation Create hunting rule
Author:	NyxIndius
Description:	Detects Java class with char-arithmetic string obfuscation (ldc/sipush A - B, isub, i2c) in volume

Rule name:	SilentNet_FakeFabric_Jar_Container Create hunting rule
Author:	NyxIndius
Description:	Detects fake Fabric mod JAR with net/fabric/ package (not net/fabricmc/) and random class names, associated with SilentNet loader/stealer

Rule name:	SilentNet_FakeFabric_Metadata Create hunting rule
Author:	NyxIndius
Description:	Detects MANIFEST or fabric.mod.json pointing to a net.fabric.* entrypoint (fake Fabric mod, SilentNet)

Rule name:	SilentNet_FakeFabric_Mod_Jar Create hunting rule
Author:	NyxIndius
Description:	Detects SilentNet Minecraft stealer fake Fabric mod JAR: fabric.mod.json plus random-named classes directly under com/github/ or net/fabric/ (incl. inner classes), without net/fabricmc/

Rule name:	SilentNet_Loader_Class Create hunting rule
Author:	NyxIndius
Description:	Detects SilentNet Java loader/stealer class: char-arith obfuscation plus launcher, dropper, custom HTTPS/DoH client or Minecraft session reflection