🤲🏼 NEW | abuse.ch Community Hub! Earn recognition 🏅 for the malware intelligence you share, climb the leaderboards 📈, and connect with like-minded contributors who share your hunting focus 🤝. Ready to unlock your profile? Go to the Community Hub →

MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a2e81affce8ff3f7c8ecda2c1af99d23365e7da82753ac0a4dca188017635e4b. 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 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a2e81affce8ff3f7c8ecda2c1af99d23365e7da82753ac0a4dca188017635e4b
SHA3-384 hash: 2711ca012e68cf95edb59aae31aaae0a8abfafc5f036bae1397f4b7c085d337b8a96dda7477122a7f2d2c7ba15f6b41a
SHA1 hash: 0ae9609b2ecd497516704f73f249e924dba90f18
MD5 hash: f7554c755696bdcfeb7731da954227d7
humanhash: vegan-mobile-kansas-low
File name:KryptonPlus-1.21.11.jar
Download: download sample
Signature SilentNet
Create hunting rule
File size:2'491'624 bytes
First seen:2026-10-29 20:07:47 UTC
Last seen:Never
File type:Java file jar
MIME type:application/zip
ssdeep 49152:Gf7LMC7iLrCP3eZ01VWviMXPOLr+dbpkT3ReFdDb:Gf/MtHS3ee1VWviPmdkT3ReLf
TLSH T14AB53376DF877BF2316F1388C56F2B27A92867045F64BBA8C9D0A694C4BC2E54DC8341
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 :
75
Origin country :
AT AT
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
KryptonPlus-1.21.11.jar
Verdict:
Malicious activity
Analysis date:
2026-10-29 20:06:04 UTC
Tags:
silentnet stealer etherhiding evasion auto python generic arch-exec arch-doc openssl tool
Link:
https://app.any.run/tasks/a9add98f-cc5e-45b3-a6c7-ac506bdf57ef

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/95988/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.81984754.79636741.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ae3a7b2b175ade21dce8732
Tags:
virus java
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/a2e81affce8ff3f7c8ecda2c1af99d23365e7da82753ac0a4dca188017635e4b
Verdict:
Unknown
File Type:
jar
Link:
https://opentip.kaspersky.com/a2e81affce8ff3f7c8ecda2c1af99d23365e7da82753ac0a4dca188017635e4b/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/1994890
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
Multi AV Scanner detection for submitted 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
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: 1994890 Sample: KryptonPlus-1.21.11.jar Startdate: 29/10/2026 Architecture: WINDOWS Score: 100 116 files.pythonhosted.org 2->116 118 thisisafalsepositive.st 2->118 120 3 other IPs or domains 2->120 150 Multi AV Scanner detection for dropped file 2->150 152 Multi AV Scanner detection for submitted file 2->152 154 Yara detected SilentNet 2->154 156 9 other signatures 2->156 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 130 thisisafalsepositive.st 185.178.208.191, 443, 49717, 49721 DDOS-GUARDRU Russia 26->130 132 172.66.146.203, 443, 49715 CLOUDFLARENET-CloudflareIncUS Canada 26->132 92 C:\Users\user\AppData\Local\...\winsound.pyd, PE32+ 26->92 dropped 94 C:\Users\user\AppData\...\vcruntime140_1.dll, PE32+ 26->94 dropped 96 C:\Users\user\AppData\...\vcruntime140.dll, PE32+ 26->96 dropped 98 623 other malicious files 26->98 dropped 30 python.exe 218 26->30         started        file8 process9 dnsIp10 134 64.31.48.194, 443, 49726 LIMESTONENETWORKS-LimestoneNetworksIncUS Japan 30->134 136 198.178.224.35, 443, 49724 LATITUDE-SH-LatitudeshUS United States 30->136 138 4 other IPs or domains 30->138 100 C:\Users\user\AppData\...\tmp6ea3vchv.tmp, PE32+ 30->100 dropped 102 C:\Users\user\AppData\Local\...\winsound.pyd, PE32+ 30->102 dropped 104 C:\Users\user\AppData\...\vcruntime140_1.dll, PE32+ 30->104 dropped 106 32 other malicious files 30->106 dropped 142 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 30->142 144 Tries to harvest and steal browser information (history, passwords, etc) 30->144 146 Writes to foreign memory regions 30->146 148 2 other signatures 30->148 35 pip.exe 30->35         started        37 python.exe 1118 30->37         started        42 python.exe 30->42         started        44 2 other processes 30->44 file11 signatures12 process13 dnsIp14 46 python.exe 35->46         started        50 conhost.exe 35->50         started        122 pypi.org 151.101.0.223, 443, 49745, 49753 FASTLY-FastlyIncUS Canada 37->122 76 C:\Users\user\AppData\Local\...\pip3.exe, PE32+ 37->76 dropped 78 C:\Users\user\AppData\Local\...\pip3.12.exe, PE32+ 37->78 dropped 80 C:\Users\user\AppData\Local\...\pip.exe, PE32+ 37->80 dropped 88 390 other malicious files 37->88 dropped 158 Suspicious powershell command line found 37->158 160 Uses schtasks.exe or at.exe to add and modify task schedules 37->160 162 Uses netsh to modify the Windows network and firewall settings 37->162 166 2 other signatures 37->166 52 conhost.exe 37->52         started        124 142.251.152.119 GOOGLE-GoogleLLCUS United States 42->124 126 104.16.248.249 CLOUDFLARENET-CloudflareIncUS Canada 42->126 128 2 other IPs or domains 42->128 82 C:\Recovery\OEM\...\RuntimeBroker.exe, PE32+ 42->82 dropped 84 C:\Users\user\AppData\Local\...\stdole.py, Python 42->84 dropped 86 _78530B68_61F9_11D...A024580902_0_1_0.py, Python 42->86 dropped 90 4 other malicious files 42->90 dropped 164 Adds a directory exclusion to Windows Defender 42->164 54 powershell.exe 42->54         started        56 powershell.exe 42->56         started        58 powershell.exe 42->58         started        60 12 other processes 42->60 file15 signatures16 process17 dnsIp18 140 151.101.192.223, 443, 49754 FASTLY-FastlyIncUS Canada 46->140 108 C:\Users\user\AppData\Local\...\wsdump.exe, PE32+ 46->108 dropped 110 C:\Users\user\AppData\...\cffi-gen-src.exe, PE32+ 46->110 dropped 112 C:\Users\user\AppData\Local\...\win32wnet.pyd, PE32+ 46->112 dropped 114 461 other malicious files 46->114 dropped 62 conhost.exe 54->62         started        64 conhost.exe 56->64         started        66 conhost.exe 58->66         started        68 conhost.exe 60->68         started        70 conhost.exe 60->70         started        72 conhost.exe 60->72         started        74 8 other processes 60->74 file19 process20
Score:
0%
Verdict:
Benign
File Type:
ARCHIVE
Link:
https://malprob.io/report/a2e81affce8ff3f7c8ecda2c1af99d23365e7da82753ac0a4dca188017635e4b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a2e81affce8ff3f7c8ecda2c1af99d23365e7da82753ac0a4dca188017635e4b/
Threat name:
ByteCode-JAVA.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-10-27 22:20:47 UTC
File Type:
Binary (Archive)
Extracted files:
11
AV detection:
4 of 36 (11.11%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ulubv76or7z7pshm3iwbv6m5em3f47nie5j2ycsnzimiaf3dlzfq._file
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/261029-ywmphas15j/
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/a2e81affce8ff3f7c8ecda2c1af99d23365e7da82753ac0a4dca188017635e4b

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_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 a2e81affce8ff3f7c8ecda2c1af99d23365e7da82753ac0a4dca188017635e4b

(this sample)

anyrun
any.run
https://app.any.run/tasks/a9add98f-cc5e-45b3-a6c7-ac506bdf57ef
  
Dropping
SilentNet
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/95988/
  
URLhaus
https://urlhaus.abuse.ch/url/4046837/

Comments