MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d77857e39d36842225e58a9d5977d73c86e5158858225a92ec16b2f2ca522fe3. 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: 12


Intelligence 12 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d77857e39d36842225e58a9d5977d73c86e5158858225a92ec16b2f2ca522fe3
SHA3-384 hash: 39a9d08a8e178b3dcd122118ec0c6b20478d5a001c69199c0724ba96409c35f637154ebf7a25d9f789e67e3bc880b64f
SHA1 hash: 59e47c70cbbca199a598274c45fb074c12672b6a
MD5 hash: f942818a68a2c76b0a8a80c286032985
humanhash: black-batman-four-video
File name:6Rc9W1x.bat
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:778'684 bytes
First seen:2025-08-21 07:05:00 UTC
Last seen:Never
File type:Batch (bat) bat
MIME type:text/x-msdos-batch
ssdeep 12288:hZJBhkf77vD8nvyd7LB8E/0v/dTON1LXYICOMRsFVVM+DVA4GYHHyr2e2HWPTWBr:hVhkfnD8nvyd583ZaXYICNRkV7OankC7
TLSH T1CFF423014E734D7E862C62A224D70E173B41DDD8D1E8DAF912E7AD9BB89F79B802704D
Magika batch
Reporter abuse_ch
Tags:bat QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
37
Origin country :
SE SE
Vendor Threat Intelligence
Malware family:
meterpreter
Create hunting rule
ID:
1
File name:
2to1ep.bin
Verdict:
Malicious activity
Analysis date:
2025-08-20 13:44:39 UTC
Tags:
auto metasploit framework python github xtinyloader loader phishing storm1747 tycoon anydesk tool lumma stealer backdoor xworm rat meterpreter payload redline tinynuke agenttesla generic modiloader asyncrat purelogsstealer koadic vipkeylogger keylogger nanocore miner njrat dbatloader possible-phishing coinminer masslogger cobaltstrike phorpiex valley quasar clickfix stealc pyinstaller formbook meta sliver havoc donutloader bladabindi snake azorult n-w0rm worm xred gh0st koiloader whitesnakestealer bruteratel remcos evasion darkroad ransomware cryptolocker arechclient2 loki remote babadeda dcrat rmm-tool clipper diamotrix metastealer auto-sch-xml purecrypter telegram adware discord pythonstealer pastebin schoolboy advancedinstaller braodo wannacry xmrig ammy sage autoit
Link:
https://app.any.run/tasks/e8522469-c731-48ed-b813-176b55e5830c

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/22694/
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68a6c5cc8fd55a79c52997f0
Tags:
obfuscate shell sage
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
finger lolbin obfuscated
Link:
https://www.filescan.io/uploads/68a6c690abfbaec318273e5f/reports/9f924f67-8583-4e8c-8da8-4a0ce71aac69/overview
Verdict:
Suspicious
Labled as:
TrojanDropper/BAT.Agent
Link:
https://www.hybrid-analysis.com/sample/d77857e39d36842225e58a9d5977d73c86e5158858225a92ec16b2f2ca522fe3
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1761768
Signature
.NET source code contains potential unpacker
Bypasses PowerShell execution policy
Contains functionality to disable the Task Manager (.Net Source)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
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: Potential PowerShell Command Line Obfuscation
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Suspicious PowerShell Parameter Substring
Suspicious command line found
Suspicious powershell command line found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1761768 Sample: 6Rc9W1x.bat Startdate: 21/08/2025 Architecture: WINDOWS Score: 100 46 with-beads.gl.at.ply.gg 2->46 48 i.ibb.co 2->48 64 Found malware configuration 2->64 66 Malicious sample detected (through community Yara rule) 2->66 68 Yara detected Quasar RAT 2->68 70 8 other signatures 2->70 10 cmd.exe 1 2->10         started        13 Wy3cn.exe 2->13         started        15 svchost.exe 1 1 2->15         started        signatures3 process4 dnsIp5 72 Suspicious powershell command line found 10->72 74 Obfuscated command line found 10->74 76 Uses schtasks.exe or at.exe to add and modify task schedules 10->76 18 conhost.exe 10->18         started        21 conhost.exe 10->21         started        23 conhost.exe 10->23         started        25 powershell.exe 7 13->25         started        54 127.0.0.1 unknown unknown 15->54 signatures6 process7 signatures8 56 Suspicious powershell command line found 18->56 58 Obfuscated command line found 18->58 27 powershell.exe 14 25 18->27         started        32 powershell.exe 33 21->32         started        60 Bypasses PowerShell execution policy 23->60 62 Suspicious command line found 25->62 34 cmd.exe 1 25->34         started        process9 dnsIp10 50 with-beads.gl.at.ply.gg 147.185.221.31, 16090 SALSGIVERUS United States 27->50 52 i.ibb.co 207.174.26.219, 443, 49681 RCN-ASUS United States 27->52 44 C:\ProgramData\Wy3cn.exe, PE32+ 27->44 dropped 78 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 27->78 80 Hides that the sample has been downloaded from the Internet (zone.identifier) 27->80 82 Loading BitLocker PowerShell Module 27->82 36 cmd.exe 1 27->36         started        84 Obfuscated command line found 32->84 86 Suspicious command line found 32->86 88 Powershell drops PE file 32->88 90 Suspicious powershell command line found 34->90 38 powershell.exe 15 34->38         started        file11 signatures12 process13 process14 40 conhost.exe 36->40         started        42 schtasks.exe 1 36->42         started       
Score:
97%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/d77857e39d36842225e58a9d5977d73c86e5158858225a92ec16b2f2ca522fe3
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d77857e39d36842225e58a9d5977d73c86e5158858225a92ec16b2f2ca522fe3/
Verdict:
Malicious
Threat:
Family.QUASAR
Link:
https://tip.neiki.dev/file/d77857e39d36842225e58a9d5977d73c86e5158858225a92ec16b2f2ca522fe3
Threat name:
Script-BAT.Backdoor.Quasar
Create hunting rule
Status:
Malicious
First seen:
2025-08-20 14:05:56 UTC
File Type:
Text (Batch)
AV detection:
8 of 24 (33.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=254fpy45g2ccejpfrkovs56xhsdokfmilarfvexmc2zpfsssf7rq._file
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar defense_evasion execution persistence spyware trojan
Link:
https://tria.ge/reports/250821-hzsf6agn5s/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Blocklisted process makes network request
Command and Scripting Interpreter: PowerShell
Modifies trusted root certificate store through registry
Quasar RAT
Quasar family
Quasar payload
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:botnet_plaintext_c2
Create hunting rule
Author:cip
Description:Attempts to match at least some of the strings used in some botnet variants which use plaintext communication protocols.

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 d77857e39d36842225e58a9d5977d73c86e5158858225a92ec16b2f2ca522fe3

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3607250/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/22694/

Comments