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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a1cd2f7ddd949ee79b5cbd4064bfb1dfafb02283250299f009d46f46286a6128. 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 12 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a1cd2f7ddd949ee79b5cbd4064bfb1dfafb02283250299f009d46f46286a6128
SHA3-384 hash: 226c58a3418a3e3175e788005a4ebd859f42e422e9e951d1945c8c20586a809b2f5f90b2c744a40d04ff8f812e40d521
SHA1 hash: bb7928f48fc4a46eb15f6806d6377cc27f44b230
MD5 hash: e2beb3b93c9a67a64f108e8aeadc26d3
humanhash: autumn-mobile-virginia-zulu
File name:mod.jar
Download: download sample
Signature SilentNet
Create hunting rule
File size:1'704'982 bytes
First seen:2026-11-12 17:14:24 UTC
Last seen:Never
File type:Java file jar
MIME type:application/zip
ssdeep 49152:ftMaSTivh25Ka4CjHS7NL6M2b7chPgWgOVUjx:fiTivh2Ya4CjMOb7casqjx
TLSH T1798533798659FEE67D2B4C363B3028B053E47631413910BF1EB8DA5D726E609BBB4213
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 :
65
Origin country :
AT AT
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
jar
Verdict:
Malicious activity
Analysis date:
2026-11-12 17:24:50 UTC
Tags:
silentnet stealer etherhiding evasion
Link:
https://app.any.run/tasks/b97f8446-da28-40be-8029-b88cb778f38d

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/99644/
Verdict:
Clean
Score:
89.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6af5f429c48f25399eb56451
Tags:
n/a
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Launching a service
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/6af5f42906696c1ea18acdf3/reports/a387ac84-b524-4659-9fbf-a73c205a9a95/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/a1cd2f7ddd949ee79b5cbd4064bfb1dfafb02283250299f009d46f46286a6128
Result
Malware family:
Silentnet
Create hunting rule
Verdict:
Malicious
Trusted hash?:
False
File:
11
Classes:
8
Nested archives:
0
Source:
https://www.jarscanner.org/
Findings
Minecraft session theft indicators: Code associated with Minecraft session-token collection was found.
Silentnet signature: Known Silentnet data path was found.
External process execution: ProcessBuilder can execute operating-system commands.
User-Agent: May indicate outbound HTTP requests or client impersonation.
Result
Threat name:
SilentNet
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/2004911
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
Modifies the windows firewall
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)
Unusual module load detection (module proxying)
Uses netsh to modify the Windows network and firewall settings
Uses schtasks.exe or at.exe to add and modify task schedules
Writes many files with high entropy
Writes to foreign memory regions
Yara detected Python Keylogger
Yara detected SilentNet
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 2004911 Sample: mod.jar Startdate: 12/11/2026 Architecture: WINDOWS Score: 100 115 thisisafalsepositive.st 2->115 117 files.pythonhosted.org 2->117 119 3 other IPs or domains 2->119 149 Suricata IDS alerts for network traffic 2->149 151 Yara detected SilentNet 2->151 153 Yara detected Python Keylogger 2->153 155 9 other signatures 2->155 12 cmd.exe 1 2->12         started        14 powershell.exe 2->14         started        16 powershell.exe 2->16         started        signatures3 process4 process5 18 java.exe 5 12->18         started        20 conhost.exe 12->20         started        22 conhost.exe 14->22         started        24 conhost.exe 16->24         started        process6 26 javaw.exe 915 18->26         started        dnsIp7 131 thisisafalsepositive.st 185.178.208.191, 443, 49716, 49723 DDOS-GUARDRU Russia 26->131 133 104.20.46.180, 443, 49714 CLOUDFLARENET-CloudflareIncUS Canada 26->133 99 C:\Users\user\AppData\Local\...\python.exe, PE32+ 26->99 dropped 101 C:\Users\user\AppData\Local\...\python312.zip, Zip 26->101 dropped 103 C:\Users\user\AppData\Local\...\winsound.pyd, PE32+ 26->103 dropped 105 649 other files (none is malicious) 26->105 dropped 30 python.exe 218 26->30         started        file8 process9 dnsIp10 135 64.130.32.46, 443, 49728 TERASWITCH-TeraSwitchNetworksIncUS Germany 30->135 137 198.178.224.35, 443, 49726 LATITUDE-SH-LatitudeshUS United States 30->137 139 4 other IPs or domains 30->139 107 C:\Users\user\AppData\Local\...\python.exe, PE32+ 30->107 dropped 109 C:\Users\user\AppData\...\tmp_wl92pcs7.zip, Zip 30->109 dropped 111 C:\Users\user\AppData\Local\...\python312.zip, Zip 30->111 dropped 113 34 other files (1 malicious) 30->113 dropped 141 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 30->141 143 Tries to harvest and steal browser information (history, passwords, etc) 30->143 145 Writes to foreign memory regions 30->145 147 3 other signatures 30->147 35 python.exe 1272 30->35         started        40 pip.exe 30->40         started        42 python.exe 30->42         started        44 2 other processes 30->44 file11 signatures12 process13 dnsIp14 121 dualstack.python.map.fastly.net 151.101.128.223, 443, 49751 FASTLY-FastlyIncUS Canada 35->121 123 pypi.org 151.101.192.223, 443, 49750, 49754 FASTLY-FastlyIncUS Canada 35->123 83 C:\Users\user\AppData\Local\Temp\...\wait.py, Python 35->83 dropped 85 C:\Users\user\AppData\Local\Temp\...\util.py, Python 35->85 dropped 87 C:\Users\user\AppData\Local\Temp\...\url.py, Python 35->87 dropped 95 796 other files (none is malicious) 35->95 dropped 157 Suspicious powershell command line found 35->157 159 Uses schtasks.exe or at.exe to add and modify task schedules 35->159 161 Uses netsh to modify the Windows network and firewall settings 35->161 165 3 other signatures 35->165 46 conhost.exe 35->46         started        48 python.exe 40->48         started        51 conhost.exe 40->51         started        125 208.115.201.238 LIMESTONENETWORKS-LimestoneNetworksIncUS Germany 42->125 127 142.251.150.119 GOOGLE-GoogleLLCUS United States 42->127 129 23.221.253.22 AKAMAI-AS-AkamaiTechnologiesIncUS United States 42->129 89 C:\Recovery\OEM\...\RuntimeBroker.exe, PE32+ 42->89 dropped 91 C:\Users\user\AppData\Local\...\stdole.py, Python 42->91 dropped 93 _78530B68_61F9_11D...A024580902_0_1_0.py, Python 42->93 dropped 97 4 other files (none is malicious) 42->97 dropped 163 Adds a directory exclusion to Windows Defender 42->163 53 powershell.exe 42->53         started        55 powershell.exe 42->55         started        57 powershell.exe 42->57         started        59 12 other processes 42->59 file15 signatures16 process17 file18 75 c12a6c1abf873b61f0...ce83883.body (copy), Python 48->75 dropped 77 95ad9cf1790ae51303...729f24d.body (copy), Python 48->77 dropped 79 49583e7972e864a609...ef5e4e7.body (copy), Python 48->79 dropped 81 212 other files (18 malicious) 48->81 dropped 61 conhost.exe 53->61         started        63 conhost.exe 55->63         started        65 conhost.exe 57->65         started        67 conhost.exe 59->67         started        69 conhost.exe 59->69         started        71 conhost.exe 59->71         started        73 8 other processes 59->73 process19
Score:
0%
Verdict:
Benign
File Type:
ARCHIVE
Link:
https://malprob.io/report/a1cd2f7ddd949ee79b5cbd4064bfb1dfafb02283250299f009d46f46286a6128
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a1cd2f7ddd949ee79b5cbd4064bfb1dfafb02283250299f009d46f46286a6128/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uhgs67o5sspopg24xvagjp5r36x3aiudeubjt4aj2rxumkdkmeua._file
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/261112-vsn7dahy9t/
Malware Family:
java
Create hunting rule
Malicious:
True
Tags:
jar
Link:
https://intel.virussign.com/intelligence/file/a1cd2f7ddd949ee79b5cbd4064bfb1dfafb02283250299f009d46f46286a6128
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/a1cd2f7ddd949ee79b5cbd4064bfb1dfafb02283250299f009d46f46286a6128

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:exploit_any_poppopret
Create hunting rule
Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
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

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 a1cd2f7ddd949ee79b5cbd4064bfb1dfafb02283250299f009d46f46286a6128

(this sample)

  
Dropping
SilentNet
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/99644/

Comments