MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4741f6612fedc84d6a994ffda0b413ca82999f8acdea3a9ca11b9c16933fead1. 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: 9


Intelligence 9 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4741f6612fedc84d6a994ffda0b413ca82999f8acdea3a9ca11b9c16933fead1
SHA3-384 hash: 4d40a44a26b85979c839441e6516f502235b12ed3e152d94b871015bf4235ec0c065f6d902b9261a22d3748b13a25653
SHA1 hash: a36e1666b28d295c1aeabf321f328ffe175cf830
MD5 hash: fcb3a39140705b70ad618f210a67cbfc
humanhash: summer-mirror-mobile-oregon
File name:Ryact.bat
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:3'357'452 bytes
First seen:2025-11-23 19:51:54 UTC
Last seen:Never
File type:Batch (bat) bat
MIME type:text/x-msdos-batch
ssdeep 24576:qu6jBPtkOzMGY6+Iy7xamRBPbUKmateJfhK21tqr2wmkyhDZA4UKhYRxo3Zae8W/:OKJGYAX4ybamNSxFR2dpZvzYDax7j9c4
Threatray 192 similar samples on MalwareBazaar
TLSH T1F2F533210E75EEFF4618832A607F2F3D0FE20B5694CA70EB9BD074E75A97B51041B929
Magika batch
Reporter smica83
Tags:bat QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
110
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
_4741f6612fedc84d6a994ffda0b413ca82999f8acdea3a9ca11b9c16933fead1.txt
Verdict:
No threats detected
Analysis date:
2025-11-23 19:56:14 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/8b0d50c3-4607-4442-91ff-3985be7122e8

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/41169/
Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Сreating synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
Creating a file in the %AppData% subdirectories
Creating a process from a recently created file
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
base64 dropper evasive obfuscated persistence powershell svchost.exe xcopy
Link:
https://www.filescan.io/uploads/692365f26c89728b98260864/reports/5da95259-ca73-4ca2-b1d0-0c85b12848c2/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/4741f6612fedc84d6a994ffda0b413ca82999f8acdea3a9ca11b9c16933fead1
Verdict:
Clean
File Type:
text
First seen:
2025-11-24T15:53:00Z UTC
Last seen:
2025-11-24T16:10:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/4741f6612fedc84d6a994ffda0b413ca82999f8acdea3a9ca11b9c16933fead1/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/1819649
Signature
Antivirus detection for dropped file
Drops PE files with benign system names
Drops script or batch files to the startup folder
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)
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Obfuscated command line found
Powershell drops PE file
Sample uses string decryption to hide its real strings
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Drops script at startup location
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: System File Execution Location Anomaly
Suspicious powershell command line found
System process connects to network (likely due to code injection or exploit)
Unusual module load detection (module proxying)
Yara detected DonutLoader
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1819649 Sample: Ryact.bat Startdate: 23/11/2025 Architecture: WINDOWS Score: 100 55 race-wins.gl.at.ply.gg 2->55 57 files.catbox.moe 2->57 75 Found malware configuration 2->75 77 Malicious sample detected (through community Yara rule) 2->77 79 Yara detected DonutLoader 2->79 81 9 other signatures 2->81 9 cmd.exe 2 2->9         started        12 cmd.exe 2 2->12         started        signatures3 process4 signatures5 83 Suspicious powershell command line found 9->83 85 Obfuscated command line found 9->85 14 powershell.exe 12 9->14         started        16 powershell.exe 14 16 9->16         started        21 xcopy.exe 3 9->21         started        29 2 other processes 9->29 23 powershell.exe 12->23         started        25 powershell.exe 15 12->25         started        27 conhost.exe 12->27         started        31 2 other processes 12->31 process6 dnsIp7 33 svchost.exe 7 14->33         started        51 files.catbox.moe 108.181.20.35, 443, 49721, 49724 ASN852CA Canada 16->51 43 C:\Users\user\AppData\Roaming\...\svchost.exe, PE32 16->43 dropped 59 Found suspicious powershell code related to unpacking or dynamic code loading 16->59 61 Drops PE files with benign system names 16->61 63 Powershell drops PE file 16->63 45 C:\Users\user\...\Ryact.bat:Zone.Identifier, ASCII 21->45 dropped 47 C:\Users\user\AppData\Roaming\...\Ryact.bat, DOS 21->47 dropped 65 Drops script or batch files to the startup folder 21->65 37 svchost.exe 4 23->37         started        49 C:\Users\user\AppData\...\dF22smCv.fail, data 29->49 dropped file8 signatures9 process10 dnsIp11 53 race-wins.gl.at.ply.gg 147.185.221.194, 39398, 49725, 49727 SALSGIVERUS United States 33->53 67 Antivirus detection for dropped file 33->67 69 System process connects to network (likely due to code injection or exploit) 33->69 71 Multi AV Scanner detection for dropped file 33->71 73 2 other signatures 33->73 39 conhost.exe 33->39         started        41 conhost.exe 37->41         started        signatures12 process13
Score:
98%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/4741f6612fedc84d6a994ffda0b413ca82999f8acdea3a9ca11b9c16933fead1
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4741f6612fedc84d6a994ffda0b413ca82999f8acdea3a9ca11b9c16933fead1/
Verdict:
Clean
Link:
https://tip.neiki.dev/file/4741f6612fedc84d6a994ffda0b413ca82999f8acdea3a9ca11b9c16933fead1
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2025-11-23 18:34:57 UTC
File Type:
Text
AV detection:
7 of 24 (29.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=i5a7myjp5xee22uzj762bnatzkbjth4kzxvdvhfbdoobnez75liq._file
Verdict:
malicious
Label(s):
donutloader
Create hunting rule
quasarrat
Create hunting rule
Similar samples:
b4cc18207df83ad7c5fee8b34d2f2e680ba7dc45e51002d62712034a4cef69c6
QuasarRAT
c7f4e1aba81ad7714da4487dd279cc886b50428116b614c9ebe246d937c478f0
QuasarRAT
d017447f8ef2d707ce3a908e05bcac2206d8f5b8d63b72e494a81eb379b69853
QuasarRAT
d356b8c6b75a1749f6100920d7317b09f5cead0fd21e4379b741a47548072f2b
QuasarRAT
dda8c6a69e8501ae0e368a93ed9c4098c0fb22bbc647cf4e6a7ffd6a7c0e9016
QuasarRAT
error
QuasarRAT
f8913a531ebd3da8cd44c2b2e902a343beefc275c6e4e8da100faefc483d6271
QuasarRAT
+ 182 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:customerloader family:donutloader family:quasar botnet:office04 discovery downloader execution loader spyware trojan
Link:
https://tria.ge/reports/251123-yljj4a1lds/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Drops startup file
Executes dropped EXE
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Downloads MZ/PE file
Customer Loader
Customerloader family
Detects DonutLoader
DonutLoader
Donutloader family
Quasar RAT
Quasar family
Quasar payload
Malware Config
C2 Extraction:
race-wins.gl.at.ply.gg:39398
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Rule name:detect_powershell
Create hunting rule
Author:daniyyell
Description:Detects suspicious PowerShell activity related to malware execution
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)

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/41169/

Comments