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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a7a942ea6d9046cf2c82bd1745912395eebb3e2534a7dbffe05436125e6d937d. 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: 10


Intelligence 10 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a7a942ea6d9046cf2c82bd1745912395eebb3e2534a7dbffe05436125e6d937d
SHA3-384 hash: cfa141b316aeae6941c4ee18036655f4ef3ffdea2e0da35a51d76fb9cc7e9cabf9e9658569044bef096016dcf7efa1e2
SHA1 hash: 68e2d0d934b0d91688f97ecfc9ab208e5716aeb3
MD5 hash: 8ce4919a413e3c9600e9a90358568e2e
humanhash: spring-iowa-wolfram-fourteen
File name:startup_265.bat
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:4'389'590 bytes
First seen:2026-01-05 15:46:22 UTC
Last seen:Never
File type:Batch (bat) bat
MIME type:text/plain
ssdeep 49152:ks6cRzYgL7f8CYMXBIZYqmhNCtjsnBUXr7ld0eAM5RuVKUeNhcRh5:Z
Threatray 182 similar samples on MalwareBazaar
TLSH T1471633264EEF5F6F4670718C202E090FBA5D8C044115FDE77BE298CA6B9FD28193356A
Magika txt
Reporter smica83
Tags:bat QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
212
Origin country :
HU HU
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
_a7a942ea6d9046cf2c82bd1745912395eebb3e2534a7dbffe05436125e6d937d.txt
Verdict:
No threats detected
Analysis date:
2026-01-05 15:49:09 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/a9fac554-b1b5-4ef8-8adc-b872d5681c1d

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/47757/
Verdict:
Malicious
Score:
90.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=695bdd03d2357cccc3dfadf8
Tags:
metasploit backdoor shell sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Query of malicious DNS domain
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
base64 base64 conhost evasive lolbin obfuscated packed powershell reconnaissance schtasks
Link:
https://www.filescan.io/uploads/695bdd014f8ce373508c9d2c/reports/ef58f377-9426-4e7b-96a4-7a66555e1e8e/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/a7a942ea6d9046cf2c82bd1745912395eebb3e2534a7dbffe05436125e6d937d
Verdict:
Clean
File Type:
ps1
First seen:
2026-01-05T13:05:00Z UTC
Last seen:
2026-01-07T07:09:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/a7a942ea6d9046cf2c82bd1745912395eebb3e2534a7dbffe05436125e6d937d/results?tab=lookup
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1844994
Signature
.NET source code contains potential unpacker
Bypasses PowerShell execution policy
Connects to a pastebin service (likely for C&C)
Found large BAT file
Hides that the sample has been downloaded from the Internet (zone.identifier)
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Sets debug register (to hijack the execution of another thread)
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Malicious Base64 Encoded PowerShell Keywords in Command Lines
Sigma detected: Potentially Suspicious PowerShell Child Processes
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Powerup Write Hijack DLL
Sigma detected: Suspicious PowerShell Parameter Substring
Suspicious powershell command line found
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Powershell decode and execute
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1844994 Sample: startup_265.bat Startdate: 05/01/2026 Architecture: WINDOWS Score: 100 49 pastebin.com 2->49 51 shed.dual-low.part-0013.t-0009.t-msedge.net 2->51 53 4 other IPs or domains 2->53 59 Malicious sample detected (through community Yara rule) 2->59 61 Yara detected Powershell decode and execute 2->61 63 Yara detected Quasar RAT 2->63 67 9 other signatures 2->67 10 cmd.exe 1 2->10         started        signatures3 65 Connects to a pastebin service (likely for C&C) 49->65 process4 process5 12 conhost.exe 10->12         started        15 conhost.exe 10->15         started        signatures6 75 Suspicious powershell command line found 12->75 17 powershell.exe 14 930 12->17         started        77 Bypasses PowerShell execution policy 15->77 process7 dnsIp8 45 6nuzshlva.localto.net 107.152.32.98, 49716, 49722, 49725 TZULOUS United States 17->45 47 pastebin.com 104.20.29.150, 443, 49713 CLOUDFLARENETUS United States 17->47 43 C:\Windows\startup_982.bat, ASCII 17->43 dropped 69 Uses schtasks.exe or at.exe to add and modify task schedules 17->69 71 Sets debug register (to hijack the execution of another thread) 17->71 73 Hides that the sample has been downloaded from the Internet (zone.identifier) 17->73 22 svchost.exe 1 1 17->22         started        25 schtasks.exe 1 17->25         started        27 schtasks.exe 1 17->27         started        29 33 other processes 17->29 file9 signatures10 process11 dnsIp12 55 127.0.0.1 unknown unknown 22->55 31 conhost.exe 25->31         started        33 conhost.exe 27->33         started        57 part-0013.t-0009.t-msedge.net 13.107.246.41, 443, 49724 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 29->57 35 conhost.exe 29->35         started        37 conhost.exe 29->37         started        39 conhost.exe 29->39         started        41 28 other processes 29->41 process13
Score:
98%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/a7a942ea6d9046cf2c82bd1745912395eebb3e2534a7dbffe05436125e6d937d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a7a942ea6d9046cf2c82bd1745912395eebb3e2534a7dbffe05436125e6d937d/
Verdict:
Clean
Link:
https://tip.neiki.dev/file/a7a942ea6d9046cf2c82bd1745912395eebb3e2534a7dbffe05436125e6d937d
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=u6uuf2tnsbdm6lecxululejdsxxlwprfgst5x77akq3bextnsn6q._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
5fc91760e012d3883537ab8656f4ed240c350357fb7999476b072cf5d937a417
QuasarRAT
696352b6b7c282736cb240651682b07a5feaa68ac065e9128f946779db00b02b
QuasarRAT
6eeb5788ce02a71cee8cad314c4f1c467ac0dc77b23cbbef4f3a38bdfbd75f46
QuasarRAT
8b285bfafb3e876e29f04165896276d17f0998e2b02f97c90a28c34ab53ee866
QuasarRAT
b0455309a1405bee110cf310c555a615dea5644c96812770c80afde298e9d066
QuasarRAT
error
QuasarRAT
f4e4d9cc74ac2b174a5e3bc41c29eea3fbcbea79ff32f49535bb6a56c6523860
QuasarRAT
+ 172 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar execution spyware trojan
Link:
https://tria.ge/reports/260105-s7zwbasqbq/
Behaviour
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Legitimate hosting services abused for malware hosting/C2
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Quasar RAT
Quasar family
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/a7a942ea6d9046cf2c82bd1745912395eebb3e2534a7dbffe05436125e6d937d

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:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries

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/47757/

Comments