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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ffb708f3ae1ec3608a294cdaded582d2d6dd7824c409f0ed07e70bc941da7f74. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ffb708f3ae1ec3608a294cdaded582d2d6dd7824c409f0ed07e70bc941da7f74
SHA3-384 hash: 3a5fdeb5213a501f7aca70fac93bff521a353333c99865712bd59547efc18b7c73274a9e38ed9ec4cf46630e21190f94
SHA1 hash: 34653c6dac5af994607c9e53dba1b08cee022e91
MD5 hash: d4d8e974419f39dd6a417adf1aad713b
humanhash: nuts-jupiter-may-potato
File name:Gooba Client.jar
Download: download sample
Signature Silentnet
Create hunting rule
File size:19'744'765 bytes
First seen:2026-11-04 18:05:23 UTC
Last seen:Never
File type:Java file jar
MIME type:application/java-archive
ssdeep 393216:CrC+rCxu0keY1eWdB3IHr9ODWMMsap9NEFZuLi5KK2XbgCP0S3:CrrxJeY1eG3ILsq1po2W5bOfM2
TLSH T12F17331154B83735DB373230885C4ED2B66C0284C2CEB5ADAAF89FE5B4934D3CF5696A
TrID 57.8% (.JAR) Minecraft Fabric Mod (24020/2/4)
32.5% (.JAR) Java Archive (13500/1/2)
9.6% (.ZIP) ZIP compressed archive (4000/1)
Magika apk
Reporter wok
Tags:jar java Python SilentNet

Intelligence

File Origin
# of uploads :
1
# of downloads :
86
Origin country :
ES ES
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
jar
Verdict:
No threats detected
Analysis date:
2026-11-04 18:08:21 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/10c19b3d-c99c-4fbe-80dd-b5594e70af78

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/97220/
Verdict:
Clean
Score:
89.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6aeb7430d18657e6dffe71cf
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/6aeb741d60b837c895f02052/reports/d80c45b5-d52e-4b13-8891-87f876312b03/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/ffb708f3ae1ec3608a294cdaded582d2d6dd7824c409f0ed07e70bc941da7f74
Result
Malware family:
Silentnet
Create hunting rule
Verdict:
Malicious
Trusted hash?:
False
File:
2'143
Classes:
1'866
Nested archives:
3
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.
Bundled native library: The archive contains code that runs outside the JVM sandbox.
External process execution: ProcessBuilder can execute operating-system commands.
Bundled native library: The archive contains a native library in a recognized dependency path.
User-Agent: May indicate outbound HTTP requests or client impersonation.
Native library loading: The class invokes a JVM API that loads platform-native code.
ProGuard: An archive path matches a known obfuscator signature.
Verdict:
Unknown
File Type:
jar
Link:
https://opentip.kaspersky.com/ffb708f3ae1ec3608a294cdaded582d2d6dd7824c409f0ed07e70bc941da7f74/results?tab=lookup
Result
Threat name:
SilentNet
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1998415
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 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: 1998415 Sample: Gooba Client.jar Startdate: 04/11/2026 Architecture: WINDOWS Score: 100 115 www.python.org 2->115 117 files.pythonhosted.org 2->117 119 5 other IPs or domains 2->119 147 Suricata IDS alerts for network traffic 2->147 149 Multi AV Scanner detection for dropped file 2->149 151 Yara detected SilentNet 2->151 153 10 other signatures 2->153 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 884 18->26         started        dnsIp7 129 104.20.46.180, 443, 49739 CLOUDFLARENET-CloudflareIncUS Canada 26->129 131 185.178.208.191, 443, 49742, 49747 DDOS-GUARDRU Russia 26->131 99 C:\Users\user\AppData\Local\...\winsound.pyd, PE32+ 26->99 dropped 101 C:\Users\user\AppData\...\vcruntime140_1.dll, PE32+ 26->101 dropped 103 C:\Users\user\AppData\...\vcruntime140.dll, PE32+ 26->103 dropped 105 623 other malicious files 26->105 dropped 30 python.exe 218 26->30         started        file8 process9 dnsIp10 133 208.115.201.238, 443, 49752 LIMESTONENETWORKS-LimestoneNetworksIncUS Germany 30->133 135 198.178.224.35, 443, 49750 LATITUDE-SH-LatitudeshUS United States 30->135 137 4 other IPs or domains 30->137 107 C:\Users\user\AppData\...\tmphjv38y7f.tmp, PE32+ 30->107 dropped 109 C:\Users\user\AppData\Local\...\winsound.pyd, PE32+ 30->109 dropped 111 C:\Users\user\AppData\...\vcruntime140_1.dll, PE32+ 30->111 dropped 113 34 other malicious files 30->113 dropped 139 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 30->139 141 Tries to harvest and steal browser information (history, passwords, etc) 30->141 143 Writes to foreign memory regions 30->143 145 3 other signatures 30->145 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 pypi.org 151.101.64.223, 443, 49773, 49774 FASTLY-FastlyIncUS Canada 35->121 83 C:\Users\user\AppData\Local\...\connection.py, Python 35->83 dropped 85 C:\Users\user\AppData\Local\Temp\...\w64.exe, PE32+ 35->85 dropped 87 C:\Users\user\AppData\Local\...\w64-arm.exe, PE32+ 35->87 dropped 95 821 other malicious files 35->95 dropped 155 Suspicious powershell command line found 35->155 157 Uses schtasks.exe or at.exe to add and modify task schedules 35->157 159 Uses netsh to modify the Windows network and firewall settings 35->159 163 3 other signatures 35->163 46 conhost.exe 35->46         started        48 python.exe 40->48         started        51 conhost.exe 40->51         started        123 142.251.153.119 GOOGLE-GoogleLLCUS United States 42->123 125 23.192.49.54 AKAMAI-AS-AkamaiTechnologiesIncUS Canada 42->125 127 23.192.53.222 AKAMAI-AS-AkamaiTechnologiesIncUS Canada 42->127 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 malicious files 42->97 dropped 161 Adds a directory exclusion to Windows Defender 42->161 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 C:\Users\user\...\_simd.cp312-win_amd64.pyd, PE32+ 48->75 dropped 77 C:\...\_rational_tests.cp312-win_amd64.pyd, PE32+ 48->77 dropped 79 _operand_flag_tests.cp312-win_amd64.pyd, PE32+ 48->79 dropped 81 240 other malicious files 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:
33%
Verdict:
Susipicious
File Type:
ARCHIVE
Link:
https://malprob.io/report/ffb708f3ae1ec3608a294cdaded582d2d6dd7824c409f0ed07e70bc941da7f74
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ffb708f3ae1ec3608a294cdaded582d2d6dd7824c409f0ed07e70bc941da7f74/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=763qr45od3bwbcrjjtnn5vmc2lln26beyqe7b3ih44f4sqo2p52a._file
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/261104-wpvenayv8p/
Malware Family:
java
Create hunting rule
Malicious:
True
Tags:
checks-cpu-name sets-process-name jar detect-debug-environment
Link:
https://intel.virussign.com/intelligence/file/ffb708f3ae1ec3608a294cdaded582d2d6dd7824c409f0ed07e70bc941da7f74
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/ffb708f3ae1ec3608a294cdaded582d2d6dd7824c409f0ed07e70bc941da7f74

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:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques

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 ffb708f3ae1ec3608a294cdaded582d2d6dd7824c409f0ed07e70bc941da7f74

(this sample)

  
Dropping
SilentNet
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/97220/

Comments