MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7347f0b12918ef4e7b6cefdd29f8c6a39fcc8a4b06385f104460583808c2492a. 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: 13


Intelligence 13 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7347f0b12918ef4e7b6cefdd29f8c6a39fcc8a4b06385f104460583808c2492a
SHA3-384 hash: 9081c55ac267b828f42f2e712c1fc4f68ae2b56fca69d3bde6c4b29d0e6fee35446b676568dea4863a40e0f7c1c6ec44
SHA1 hash: 11cb58f5142dff7d634d991ac2cdf21e0267235f
MD5 hash: d545f3a8ca8b9f11b4bcf941bd874892
humanhash: uncle-monkey-twenty-victor
File name:killxd.bat
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:1'355'707 bytes
First seen:2026-02-27 16:59:41 UTC
Last seen:Never
File type:Batch (bat) bat
MIME type:text/x-msdos-batch
ssdeep 24576:OYo+cs0D6HAbMZFgAqSXYH9EmFTd8auefzcn6CkJ2p0e3CN:KzCZGO+Tzfc6VN
Threatray 156 similar samples on MalwareBazaar
TLSH T1EC5501158AC86FB5CFEC5E1880FE1A1D53E04A8E542AB58EEB73BD47AFF75040107199
Magika batch
Reporter abuse_ch
Tags:bat QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
46
Origin country :
SE SE
Vendor Threat Intelligence
Malware configuration found for:
BatchScript
Details
Link:
https://research.acce.ciphertechsolutions.com/results/1e89f9a8-2dfc-4951-830d-38dc7b8ebf58/
Malware family:
n/a
ID:
1
File name:
killxd.bat
Verdict:
Malicious activity
Analysis date:
2026-02-27 17:10:26 UTC
Tags:
susp-powershell auto-sch
Link:
https://app.any.run/tasks/62965a5c-43a0-4dc2-8e4d-721123187096

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/54908/
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69a1cdbdc950ab5d9ab22a15
Tags:
autorun emotet
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
base64 lolbin obfuscated powershell schtasks
Link:
https://www.filescan.io/uploads/69a1cdae97feb4afd65fc53a/reports/63c49784-01cb-45a8-a596-190b6fa8e29b/overview
Verdict:
Suspicious
Labled as:
BAT/Agent.BKJ
Link:
https://www.hybrid-analysis.com/sample/7347f0b12918ef4e7b6cefdd29f8c6a39fcc8a4b06385f104460583808c2492a
Result
Gathering data
Verdict:
Malicious
File Type:
unix shell
Link:
https://opentip.kaspersky.com/7347f0b12918ef4e7b6cefdd29f8c6a39fcc8a4b06385f104460583808c2492a/results?tab=lookup
Result
Threat name:
DonutLoader, Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1876095
Signature
Bypasses PowerShell execution policy
Compiles code for process injection (via .Net compiler)
Creates a thread in another existing process (thread injection)
Creates an autostart registry key pointing to binary in C:\Windows
Creates an undocumented autostart registry key
Creates autostart registry keys with suspicious names
Creates files in the system32 config directory
Creates multiple autostart registry keys
Encrypted powershell cmdline option found
Found large BAT file
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects code into the Windows Explorer (explorer.exe)
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Query firmware table information (likely to detect VMs)
Sample uses string decryption to hide its real strings
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Dot net compiler compiles file from suspicious location
Sigma detected: Invoke-Obfuscation CLIP+ Launcher
Sigma detected: Invoke-Obfuscation VAR+ Launcher
Sigma detected: Potential Persistence Via Logon Scripts - CommandLine
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Schtasks Creation Or Modification With SYSTEM Privileges
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious Command Patterns In Scheduled Task Creation
Sigma detected: Suspicious Interactive PowerShell as SYSTEM
Sigma detected: Suspicious PowerShell Parameter Substring
Sigma detected: Suspicious Script Execution From Temp Folder
Suspicious powershell command line found
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Unusual module load detection (module proxying)
Uses cmd line tools excessively to alter registry or file data
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected DonutLoader
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1876095 Sample: killxd.bat Startdate: 27/02/2026 Architecture: WINDOWS Score: 100 87 ax-0003.ax-msedge.net 2->87 89 api.msn.com 2->89 91 2 other IPs or domains 2->91 97 Found malware configuration 2->97 99 Malicious sample detected (through community Yara rule) 2->99 101 Yara detected DonutLoader 2->101 103 17 other signatures 2->103 10 cmd.exe 1 2->10         started        13 cmd.exe 2->13         started        15 explorer.exe 2->15         started        signatures3 process4 dnsIp5 113 Suspicious powershell command line found 10->113 115 Uses cmd line tools excessively to alter registry or file data 10->115 117 Encrypted powershell cmdline option found 10->117 123 2 other signatures 10->123 18 cmd.exe 4 10->18         started        22 conhost.exe 10->22         started        24 cmd.exe 13->24         started        26 conhost.exe 13->26         started        95 ax-0003.ax-msedge.net 150.171.28.12, 443, 49699 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 15->95 119 System process connects to network (likely due to code injection or exploit) 15->119 121 Query firmware table information (likely to detect VMs) 15->121 signatures6 process7 file8 67 C:\Users\user\AppData\...\upd_X4wvNYKy.bat, DOS 18->67 dropped 69 C:\Users\user\...\sysinit_ZNnrHPee.cmd, DOS 18->69 dropped 105 Suspicious powershell command line found 18->105 107 Uses cmd line tools excessively to alter registry or file data 18->107 109 Encrypted powershell cmdline option found 18->109 28 powershell.exe 1 56 18->28         started        32 powershell.exe 12 18->32         started        34 reg.exe 18->34         started        42 6 other processes 18->42 71 C:\Windows\System32\...\upd_X4wvNYKy.bat, DOS 24->71 dropped 111 Creates files in the system32 config directory 24->111 36 powershell.exe 24->36         started        38 reg.exe 24->38         started        40 conhost.exe 24->40         started        44 6 other processes 24->44 signatures9 process10 file11 81 C:\Users\user\AppData\...\lokbhddg.cmdline, Unicode 28->81 dropped 125 Creates autostart registry keys with suspicious names 28->125 127 Creates multiple autostart registry keys 28->127 129 Injects code into the Windows Explorer (explorer.exe) 28->129 143 2 other signatures 28->143 46 explorer.exe 24 9 28->46 injected 50 csc.exe 3 28->50         started        53 csc.exe 3 28->53         started        83 C:\Users\user\AppData\Local\Temp83EAR.tmp, Unicode 32->83 dropped 131 Found suspicious powershell code related to unpacking or dynamic code loading 32->131 133 Compiles code for process injection (via .Net compiler) 32->133 135 Creates an undocumented autostart registry key 34->135 85 C:\Windows\Temp\xbw22d0y\xbw22d0y.0.cs, C++ 36->85 dropped 137 Creates files in the system32 config directory 36->137 139 Creates an autostart registry key pointing to binary in C:\Windows 36->139 141 Writes to foreign memory regions 36->141 55 csc.exe 36->55         started        57 csc.exe 36->57         started        signatures12 process13 dnsIp14 93 94.154.32.195, 4445 SELECTELRU Ukraine 46->93 145 System process connects to network (likely due to code injection or exploit) 46->145 147 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 46->147 149 Hides that the sample has been downloaded from the Internet (zone.identifier) 46->149 151 Unusual module load detection (module proxying) 46->151 73 C:\Users\user\AppData\Local\...\lokbhddg.dll, PE32 50->73 dropped 59 cvtres.exe 1 50->59         started        75 C:\Users\user\AppData\Local\...\cnycik1d.dll, PE32 53->75 dropped 61 cvtres.exe 1 53->61         started        77 C:\Windows\Temp\xbw22d0y\xbw22d0y.dll, PE32 55->77 dropped 63 cvtres.exe 55->63         started        79 C:\Windows\Temp\apbwru14\apbwru14.dll, PE32 57->79 dropped 65 cvtres.exe 57->65         started        file15 signatures16 process17
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/7347f0b12918ef4e7b6cefdd29f8c6a39fcc8a4b06385f104460583808c2492a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/7347f0b12918ef4e7b6cefdd29f8c6a39fcc8a4b06385f104460583808c2492a/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ond7bmjjddxu463m57ost6gguop4zcslay4f6ecembmdqcgcjeva._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
donutloader
Create hunting rule
Similar samples:
09da583b39c72696ae98d24d518c838e4a59ba564074107df6528d9234c76253
QuasarRAT
0a2c887c8a3b30519f8c1750b8eba2df2ede2710b1fbb71f26c2acff3ececff8
QuasarRAT
84abe3e14bda7f2c87e93f82a40eb25d6ea38699c7e3752b1ac87bfd8602594c
QuasarRAT
8b285bfafb3e876e29f04165896276d17f0998e2b02f97c90a28c34ab53ee866
QuasarRAT
c3a1146bf6e791105fdbd64cc28f99a7ff82f356ff8c5c155755bdc0b549c826
QuasarRAT
d797019b2ff011ae71e9e700e8f9a16cb463af646aae4815654ae79e09f59ceb
QuasarRAT
error
QuasarRAT
f4e4d9cc74ac2b174a5e3bc41c29eea3fbcbea79ff32f49535bb6a56c6523860
QuasarRAT
f7768221e22a36ee37655231cb332642f346610c8b2e05f1368e7b81409730fd
QuasarRAT
fff8ec58e389bfcec03ca66fe8bee39b849a948174472de91eb160ae35b78365
QuasarRAT
+ 146 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:donutloader family:quasar defense_evasion execution loader persistence spyware trojan
Link:
https://tria.ge/reports/260227-vh8g9shw5f/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Views/modifies file attributes
Adds Run key to start application
Registers new Windows logon scripts automatically executed at logon.
Command and Scripting Interpreter: PowerShell
Detects DonutLoader
DonutLoader
Donutloader family
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/7347f0b12918ef4e7b6cefdd29f8c6a39fcc8a4b06385f104460583808c2492a

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: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: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:telebot_framework
Create hunting rule
Author:vietdx.mb
Rule name:WIN_FileFix_Detection
Create hunting rule
Author:dogsafetyforeverone
Description:Detects FileFix social engineering technique that launches chained PowerShell and PHP commands from file explorer typed paths
Reference:FileFix social engineering with PowerShell and PHP commands

File information

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

Web download

QuasarRAT

Batch (bat) bat 7347f0b12918ef4e7b6cefdd29f8c6a39fcc8a4b06385f104460583808c2492a

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/54908/
  
URLhaus
https://urlhaus.abuse.ch/url/3786435/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3786446/
  
URLhaus
https://urlhaus.abuse.ch/url/3786454/
  
URLhaus
https://urlhaus.abuse.ch/url/3786456/

Comments