MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 44e04c004a67c3f424db0d49c6dca82eccadcab00fb0a62c6c959354f8e1f837. 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


MasonRAT


Vendor detections: 14


Intelligence 14 IOCs YARA 19 File information Comments
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SHA256 hash: 44e04c004a67c3f424db0d49c6dca82eccadcab00fb0a62c6c959354f8e1f837
SHA3-384 hash: 0b948c8525198f0283f5ad69cb233367c08899ebbb90f6443a1410aa788ea41659d41d03fa6642e6d1d17441f87e9484
SHA1 hash: e1e9a6114fdc3cec934ac1df17dfe676cf4839ff
MD5 hash: a82825a7fed78117622a9282571db365
humanhash: west-coffee-cup-uranus
File name:MasonClient.exe
Download: download sample
Signature MasonRAT
Create hunting rule
File size:269'824 bytes
First seen:2026-06-05 05:47:41 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash c8a12676a80634473c83e0bfeb54ef67 (3 x MasonRAT)
ssdeep 6144:I6XwtxAjXDN0BQz1wSXgoIOrcCnfUn9XNk:NcxAjXiwwYgoFwCnZ
Threatray 6 similar samples on MalwareBazaar
TLSH T15B442906F75360EEC927C17483ABA333B531BC5E5230AE3A9798CB753D52E505A39E18
TrID 45.6% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
18.0% (.EXE) Win64 Executable (generic) (6522/11/2)
13.9% (.EXE) Win16 NE executable (generic) (5038/12/1)
5.6% (.ICL) Windows Icons Library (generic) (2059/9)
5.6% (.EXE) OS/2 Executable (generic) (2029/13)
Magika pebin
Reporter abuse_ch
Tags:exe MasonRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
140
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
MasonClient.exe
Verdict:
Malicious activity
Analysis date:
2026-04-12 18:59:24 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/59f7fbe4-fd30-403d-a5b9-882ee9ff0996

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/69085/
Detection(s):
SecuriteInfo.com.Trojan.MulDrop37.5220.7871.25375.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69dbeb8bf68adfe100392458
Tags:
downloader dropper shell
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Creating a process with a hidden window
Running batch commands
Launching a process
Using the Windows Management Instrumentation requests
Forced system process termination
Сreating synchronization primitives
Connection attempt
Sending a custom TCP request
Enabling autorun by creating a file
Verdict:
Malicious
Labled as:
Barys.Generic
Link:
https://www.hybrid-analysis.com/sample/44e04c004a67c3f424db0d49c6dca82eccadcab00fb0a62c6c959354f8e1f837
Verdict:
Malicious
File Type:
exe x64
First seen:
2026-04-12T16:09:00Z UTC
Last seen:
2026-06-06T22:29:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/44e04c004a67c3f424db0d49c6dca82eccadcab00fb0a62c6c959354f8e1f837/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/f3aa4a50-9011-4b97-be8e-e2569a3d4257
Result
Threat name:
Powershell Keylogger
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1923401
Signature
Contains functionality to capture and log keystrokes
Contains functionality to check if Internet connection is working
Contains functionality to steal saved passwords of Firefox
Creates / moves files in alternative data streams (ADS)
Found evasive API chain (may stop execution after checking mutex)
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Suspicious powershell command line found
Uses attrib.exe to hide files
Uses cmd line tools excessively to alter registry or file data
Uses Register-ScheduledTask to add task schedules
Yara detected Powershell Keylogger
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1923401 Sample: MasonClient.exe Startdate: 05/06/2026 Architecture: WINDOWS Score: 100 85 Malicious sample detected (through community Yara rule) 2->85 87 Multi AV Scanner detection for dropped file 2->87 89 Multi AV Scanner detection for submitted file 2->89 91 2 other signatures 2->91 8 MasonClient.exe 3 2->8         started        12 CertEnrollRuntime.exe 3 2->12         started        14 CertEnrollRuntime.exe 2->14         started        16 CertEnrollRuntime.exe 2->16         started        process3 file4 71 C:\Users\user\...\CertEnrollRuntime.exe, PE32+ 8->71 dropped 73 C:\...\CertEnrollRuntime.exe:Zone.Identifier, ASCII 8->73 dropped 105 Found evasive API chain (may stop execution after checking mutex) 8->105 107 Contains functionality to steal saved passwords of Firefox 8->107 109 Contains functionality to check if Internet connection is working 8->109 18 CertEnrollRuntime.exe 7 8->18         started        75 C:\Users\user\...\PrintServiceWorker.exe, PE32+ 12->75 dropped 77 C:\...\PrintServiceWorker.exe:Zone.Identifier, ASCII 12->77 dropped 23 PrintServiceWorker.exe 8 12->23         started        79 C:\Users\user\...\PrintServiceBroker.exe, PE32+ 14->79 dropped 111 Multi AV Scanner detection for dropped file 14->111 113 Contains functionality to capture and log keystrokes 14->113 81 C:\Users\user\...81etworkProfileWorker.exe, PE32+ 16->81 dropped signatures5 process6 dnsIp7 83 185.91.127.173, 35875, 49691, 49692 TUBE-HOSTINGDE Netherlands 18->83 61 C:\Users\user\...\CertEnrollRuntime.exe, PE32+ 18->61 dropped 63 C:\Users\user\...\Roaming:CertEnrollRuntime, PE32+ 18->63 dropped 65 C:\...\CertEnrollRuntime.exe:Zone.Identifier, ASCII 18->65 dropped 93 Multi AV Scanner detection for dropped file 18->93 95 Found evasive API chain (may stop execution after checking mutex) 18->95 97 Creates / moves files in alternative data streams (ADS) 18->97 25 cmd.exe 1 18->25         started        28 cmd.exe 18->28         started        30 cmd.exe 18->30         started        38 4 other processes 18->38 67 C:\Users\user\...\PrintServiceWorker.exe, PE32+ 23->67 dropped 69 C:\Users\user\...\Roaming:PrintServiceWorker, PE32+ 23->69 dropped 99 Contains functionality to steal saved passwords of Firefox 23->99 101 Contains functionality to check if Internet connection is working 23->101 103 Contains functionality to capture and log keystrokes 23->103 32 cmd.exe 1 23->32         started        34 cmd.exe 23->34         started        36 cmd.exe 23->36         started        40 4 other processes 23->40 file8 signatures9 process10 signatures11 115 Suspicious powershell command line found 25->115 117 Uses cmd line tools excessively to alter registry or file data 25->117 119 Uses Register-ScheduledTask to add task schedules 25->119 121 Uses attrib.exe to hide files 25->121 42 powershell.exe 37 25->42         started        45 2 other processes 25->45 47 3 other processes 28->47 49 3 other processes 30->49 51 3 other processes 32->51 53 3 other processes 34->53 55 3 other processes 36->55 57 9 other processes 38->57 59 9 other processes 40->59 process12 signatures13 123 Loading BitLocker PowerShell Module 42->123
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/44e04c004a67c3f424db0d49c6dca82eccadcab00fb0a62c6c959354f8e1f837
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/44e04c004a67c3f424db0d49c6dca82eccadcab00fb0a62c6c959354f8e1f837/
Verdict:
Malicious
Threat:
Trojan-PSW.Win32.Xploder
Link:
https://tip.neiki.dev/file/44e04c004a67c3f424db0d49c6dca82eccadcab00fb0a62c6c959354f8e1f837
Threat name:
Win64.Trojan.Barys
Create hunting rule
Status:
Malicious
First seen:
2026-04-12 18:59:28 UTC
File Type:
PE+ (Exe)
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=itqeyackm7b7ijg3bve4nxfif3gk3svqb6ykmldmswjvj6hb7a3q._file
Verdict:
malicious
Label(s):
masonrat
Create hunting rule
Similar samples:
23ed51909e20f1e128aaf46cd8bc76f5c91488f80e9def6a101e0508a085629b
MasonRAT
38e5e2368688ef46e6746730d685ef88028e100286757666ffd2a596717ffab0
MasonRAT
44e04c004a67c3f424db0d49c6dca82eccadcab00fb0a62c6c959354f8e1f837
MasonRAT
9a9862af5fc80f9c220b07c5f84268434eda94d6cd48b097b7c0236d888fb2c4
MasonRAT
error
MasonRAT
fa1f349170f67960d99d2553077d1b4a46eb2bc3b781a07300ff7cc8816f1d04
MasonRAT
Result
Malware family:
n/a
Score:
  8/10
Tags:
defense_evasion discovery execution
Link:
https://tria.ge/reports/260605-ghlrlscw5r/
Behaviour
NTFS ADS
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Views/modifies file attributes
System Time Discovery
Hide Artifacts: Hidden Files and Directories
Executes dropped EXE
Command and Scripting Interpreter: PowerShell
Unpacked files
SH256 hash:
44e04c004a67c3f424db0d49c6dca82eccadcab00fb0a62c6c959354f8e1f837
MD5 hash:
a82825a7fed78117622a9282571db365
SHA1 hash:
e1e9a6114fdc3cec934ac1df17dfe676cf4839ff
Detections:
triage_airstalk
Create hunting rule
Link:
https://www.unpac.me/results/d4c9a156-e47f-40d7-83bd-fa31c0c4573a/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/44e04c004a67c3f424db0d49c6dca82eccadcab00fb0a62c6c959354f8e1f837

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:CMD_Shutdown
Create hunting rule
Author:adm1n_usa32
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:detect_powershell
Create hunting rule
Author:daniyyell
Description:Detects suspicious PowerShell activity related to malware execution
Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:Detect_Zoom_Invite_malware_RAT_C2
Create hunting rule
Author:daniyyell
Description:Detects Zoom Invite Call Leading to Malware Hosted in Telegram C2
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:dsc
Create hunting rule
Author:Aaron DeVera
Description:Discord domains
Rule name:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:MALWARE_Win_EXEPWSH_DLAgent
Create hunting rule
Author:ditekSHen
Description:Detects SystemBC
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:PowerShell_Susp_Parameter_Combo_RID336F
Create hunting rule
Author:Florian Roth
Description:Detects PowerShell invocation with suspicious parameters
Reference:https://goo.gl/uAic1X
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:Suspicious_Process
Create hunting rule
Author:Security Research Team
Description:Suspicious process creation
Rule name:SUSP_Scheduled_Tasks_Create_From_Susp_Dir
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects a PowerShell Script that creates a Scheduled Task that runs from an suspicious directory
Rule name:Sus_All_Windows_PE_Malware
Create hunting rule
Author:DiegoAnalytics
Description:Detects Windows PE malware of all types, avoids non-executables like .html
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:VECT_Ransomware
Create hunting rule
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/69085/

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