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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 64eac550134ba49b6b20bc1ccfe53010b0db6ba090242144f34280bfb0e1a642. 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


QuasarRAT


Vendor detections: 11


Intelligence 11 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 64eac550134ba49b6b20bc1ccfe53010b0db6ba090242144f34280bfb0e1a642
SHA3-384 hash: 6bcef13888411c2049e7353f52fe68f64ccbc250e4228385140b414bf9840d3d4d095cfebf5561aa69e7753e72220d44
SHA1 hash: a053e554c85d22dddf1c36dd65bfd1c4ed2cdb82
MD5 hash: 3dab3b31cf81f21d9001338b07c6e0d0
humanhash: london-triple-kilo-eight
File name:1st Purchase Order № 20261308009.js
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:8'884'690 bytes
First seen:2026-08-13 11:27:36 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 49152:f+Mylpqs63TQiZZYSTeAiLh0oLFCosnjWYucBTci9jiPDj33mLD7mtFIKXp1MyNz:8
TLSH T14D96D8333BBE1109AE187B08DA962DCC4F0AC1491D73EBD0A8EF06D5614F79A15A57CB
Magika javascript
Reporter abuse_ch
Tags:js QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
154
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ac5acb80dae08a33778abbe
Tags:
virus shell sage
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
evasive masquerade obfuscated powershell repaired
Link:
https://www.filescan.io/uploads/6a7daa64f123f291001b668a/reports/a680b866-4f1b-4101-b03d-db5583aa8f35/overview
Verdict:
Malicious
Labled as:
Trojan/JS.Obfuscated
Link:
https://www.hybrid-analysis.com/sample/64eac550134ba49b6b20bc1ccfe53010b0db6ba090242144f34280bfb0e1a642
Verdict:
Malicious
File Type:
js
First seen:
2026-08-13T02:24:00Z UTC
Last seen:
2026-08-15T07:31:00Z UTC
Hits:
~1000
Detections:
Trojan.JS.SAgent.sb HEUR:Trojan.Script.Generic HEUR:Trojan-Downloader.Script.Generic
Link:
https://opentip.kaspersky.com/64eac550134ba49b6b20bc1ccfe53010b0db6ba090242144f34280bfb0e1a642/results?tab=lookup
Result
Threat name:
Clipboard Hijacker, Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1957476
Signature
Bypasses PowerShell execution policy
Creates an autostart registry key pointing to binary in C:\Windows
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
JavaScript file contains suspicious strings
JavaScript source code contains functionality to generate code involving a shell, file or stream
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Unusual module load detection (module proxying)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
WScript reads language and country specific registry keys (likely country aware script)
Wscript starts Powershell (via cmd or directly)
Yara detected AntiVM3
Yara detected Clipboard Hijacker
Yara detected Powershell decode and execute
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1957476 Sample: 1st Purchase Order #U2116 2... Startdate: 13/08/2026 Architecture: WINDOWS Score: 100 40 Found malware configuration 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 Multi AV Scanner detection for submitted file 2->44 46 8 other signatures 2->46 7 wscript.exe 3 2->7         started        11 aspnet_compiler.exe 2 2->11         started        13 aspnet_compiler.exe 1 2->13         started        process3 file4 36 C:\Temp\ps_vdTgxigOoRlz_1786625196456.ps1, ASCII 7->36 dropped 48 Suspicious powershell command line found 7->48 50 Wscript starts Powershell (via cmd or directly) 7->50 52 Bypasses PowerShell execution policy 7->52 54 3 other signatures 7->54 15 powershell.exe 16 7->15         started        18 taskkill.exe 1 7->18         started        20 conhost.exe 11->20         started        22 conhost.exe 13->22         started        signatures5 process6 signatures7 64 Writes to foreign memory regions 15->64 66 Injects a PE file into a foreign processes 15->66 24 aspnet_compiler.exe 1 4 15->24         started        28 aspnet_compiler.exe 15->28         started        30 conhost.exe 15->30         started        34 4 other processes 15->34 32 conhost.exe 18->32         started        process8 dnsIp9 38 153.52.162.73, 8080 CTA-42-AS1226-CaliforniaDepartmentofTechnologyUS United States 24->38 56 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 24->56 58 Creates an autostart registry key pointing to binary in C:\Windows 24->58 60 Hides that the sample has been downloaded from the Internet (zone.identifier) 24->60 62 Unusual module load detection (module proxying) 28->62 signatures10
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/64eac550134ba49b6b20bc1ccfe53010b0db6ba090242144f34280bfb0e1a642
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/64eac550134ba49b6b20bc1ccfe53010b0db6ba090242144f34280bfb0e1a642/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-08-13 05:52:29 UTC
File Type:
Text (JavaScript)
AV detection:
8 of 23 (34.78%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mtvmkuatjosjw2zaxqom7zjqccynw25asasccrhtikal7mhbuzba._file
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar defense_evasion discovery execution persistence spyware trojan
Link:
https://tria.ge/reports/260813-nlb5xayanh/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Kills process with taskkill
Scheduled Task/Job: Scheduled Task
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
System Location Discovery: System Language Discovery
ConfuserEx .NET packer
Suspicious use of SetThreadContext
Looks up external IP address via web service
Command and Scripting Interpreter: PowerShell
Family: Quasar RAT
Quasar payload
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/64eac550134ba49b6b20bc1ccfe53010b0db6ba090242144f34280bfb0e1a642

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:Base64_Encoded_Powershell_Directives
Create hunting rule
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar

File information

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

Comments