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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 159335a2cf01e4162c8ebea9970ce83f35bc632a1ef2e225f5387e3a4f54a18b. 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: 6


Intelligence 6 IOCs YARA 12 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 159335a2cf01e4162c8ebea9970ce83f35bc632a1ef2e225f5387e3a4f54a18b
SHA3-384 hash: 1ca05f29334ddb7877a12fb296bf3f753ca6347c98b274e1d6dded3131ce54e687538035f832f71350a43d5086426096
SHA1 hash: b9f977a9832b55f53245a843261e667527cb0218
MD5 hash: 0360248ac2be33463d58e06608230b8b
humanhash: crazy-wolfram-venus-red
File name:Lamba Client.jar
Download: download sample
Signature SilentNet
Create hunting rule
File size:3'803'056 bytes
First seen:2026-10-31 15:00:56 UTC
Last seen:Never
File type:Java file jar
MIME type:application/zip
ssdeep 98304:llV5t1PzQmfKwoOkzwpVTE8YjuBOhPgDgY9TgrUR:lL5tpQ6kAT8I0Y5gre
TLSH T1BF0633659493137DE5F33C728A8AC3E82E95948D923200FA6169CF5D4B02D9FF407B6B
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 :
88
Origin country :
AT AT
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
jar
Verdict:
Malicious activity
Analysis date:
2026-10-31 15:43:42 UTC
Tags:
silentnet stealer etherhiding evasion auto arch-exec arch-doc python generic openssl tool
Link:
https://app.any.run/tasks/57aeb60f-e694-4ab0-8009-3eb97615ee72

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/96395/
Verdict:
Clean
Score:
89.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ae602d1b121dd519dcf0f89
Tags:
n/a
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/6ae602cea5af6ee0ffea3fac/reports/3df74343-a437-464f-b2e0-7f967630a197/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/159335a2cf01e4162c8ebea9970ce83f35bc632a1ef2e225f5387e3a4f54a18b
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.
Verdict:
Clean
File Type:
jar
Link:
https://opentip.kaspersky.com/159335a2cf01e4162c8ebea9970ce83f35bc632a1ef2e225f5387e3a4f54a18b/results?tab=lookup
Result
Threat name:
SilentNet
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1995884
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
Multi AV Scanner detection for dropped file
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 to foreign memory regions
Yara detected Python Keylogger
Yara detected SilentNet
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1995884 Sample: Lamba Client.jar Startdate: 31/10/2026 Architecture: WINDOWS Score: 100 117 pypi.org 2->117 119 files.pythonhosted.org 2->119 121 2 other IPs or domains 2->121 143 Suricata IDS alerts for network traffic 2->143 145 Multi AV Scanner detection for dropped file 2->145 147 Yara detected SilentNet 2->147 149 8 other signatures 2->149 12 cmd.exe 1 2->12         started        signatures3 process4 signatures5 169 Adds a directory exclusion to Windows Defender 12->169 15 java.exe 5 12->15         started        17 powershell.exe 12->17         started        19 powershell.exe 12->19         started        21 conhost.exe 12->21         started        process6 process7 23 javaw.exe 884 15->23         started        27 python.exe 15->27         started        29 conhost.exe 15->29         started        31 conhost.exe 17->31         started        33 conhost.exe 19->33         started        dnsIp8 129 185.178.208.191, 443, 49717, 49723 DDOS-GUARDRU Russia 23->129 131 104.20.46.180, 443, 49715 CLOUDFLARENET-CloudflareIncUS Canada 23->131 85 C:\Users\user\AppData\Local\...\winsound.pyd, PE32+ 23->85 dropped 87 C:\Users\user\AppData\...\vcruntime140_1.dll, PE32+ 23->87 dropped 89 C:\Users\user\AppData\...\vcruntime140.dll, PE32+ 23->89 dropped 97 623 other malicious files 23->97 dropped 35 python.exe 218 23->35         started        91 C:\Users\user\AppData\Local\...\wsdump.exe, PE32+ 27->91 dropped 93 C:\Users\user\AppData\...\cffi-gen-src.exe, PE32+ 27->93 dropped 95 C:\Users\user\AppData\Local\...\win32wnet.pyd, PE32+ 27->95 dropped 99 454 other malicious files 27->99 dropped file9 process10 dnsIp11 123 64.130.32.46, 443, 49728 TERASWITCH-TeraSwitchNetworksIncUS Germany 35->123 125 198.178.224.35, 443, 49726 LATITUDE-SH-LatitudeshUS United States 35->125 127 4 other IPs or domains 35->127 77 C:\Users\user\AppData\...\tmpeo8cr8hn.tmp, PE32+ 35->77 dropped 79 C:\Users\user\AppData\Local\...\winsound.pyd, PE32+ 35->79 dropped 81 C:\Users\user\AppData\...\vcruntime140_1.dll, PE32+ 35->81 dropped 83 32 other malicious files 35->83 dropped 151 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 35->151 153 Tries to harvest and steal browser information (history, passwords, etc) 35->153 155 Writes to foreign memory regions 35->155 157 2 other signatures 35->157 40 python.exe 1118 35->40         started        45 python.exe 35->45         started        47 cmd.exe 1 35->47         started        49 3 other processes 35->49 file12 signatures13 process14 dnsIp15 133 pypi.org 151.101.192.223, 443, 49749, 49754 FASTLY-FastlyIncUS Canada 40->133 135 dualstack.python.map.fastly.net 151.101.64.223, 443, 49751, 49755 FASTLY-FastlyIncUS Canada 40->135 101 C:\Users\user\AppData\Local\...\pip3.exe, PE32+ 40->101 dropped 103 C:\Users\user\AppData\Local\...\pip3.12.exe, PE32+ 40->103 dropped 105 C:\Users\user\AppData\Local\...\pip.exe, PE32+ 40->105 dropped 113 390 other malicious files 40->113 dropped 159 Suspicious powershell command line found 40->159 161 Uses schtasks.exe or at.exe to add and modify task schedules 40->161 163 Uses netsh to modify the Windows network and firewall settings 40->163 167 2 other signatures 40->167 51 conhost.exe 40->51         started        53 cmd.exe 40->53         started        137 208.115.201.238 LIMESTONENETWORKS-LimestoneNetworksIncUS Germany 45->137 139 142.251.152.119 GOOGLE-GoogleLLCUS United States 45->139 141 2 other IPs or domains 45->141 107 C:\Recovery\OEM\...\RuntimeBroker.exe, PE32+ 45->107 dropped 109 C:\Users\user\AppData\Local\...\stdole.py, Python 45->109 dropped 111 _78530B68_61F9_11D...A024580902_0_1_0.py, Python 45->111 dropped 115 4 other malicious files 45->115 dropped 165 Adds a directory exclusion to Windows Defender 45->165 55 powershell.exe 45->55         started        57 powershell.exe 45->57         started        59 powershell.exe 45->59         started        61 12 other processes 45->61 file16 signatures17 process18 process19 63 conhost.exe 55->63         started        65 conhost.exe 57->65         started        67 conhost.exe 59->67         started        69 conhost.exe 61->69         started        71 conhost.exe 61->71         started        73 conhost.exe 61->73         started        75 8 other processes 61->75
Score:
0%
Verdict:
Benign
File Type:
ARCHIVE
Link:
https://malprob.io/report/159335a2cf01e4162c8ebea9970ce83f35bc632a1ef2e225f5387e3a4f54a18b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/159335a2cf01e4162c8ebea9970ce83f35bc632a1ef2e225f5387e3a4f54a18b/
Threat name:
ByteCode-JAVA.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-10-31 15:01:42 UTC
File Type:
Binary (Archive)
Extracted files:
11
AV detection:
4 of 38 (10.53%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=cwjtliwpahsbmleox2uzodhih423yyzkd3zoejpvhb7dut2uugfq._file
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/261031-sd4bmsxycv/
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/159335a2cf01e4162c8ebea9970ce83f35bc632a1ef2e225f5387e3a4f54a18b

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 159335a2cf01e4162c8ebea9970ce83f35bc632a1ef2e225f5387e3a4f54a18b

(this sample)

  
Dropping
SilentNet
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/96395/
  
URLhaus
https://urlhaus.abuse.ch/url/4049349/

Comments