MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cb85fe79fb4d6224bf80e4152aefd7a3fd4bbf2db5bf7c7d9d156492061f7755. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cb85fe79fb4d6224bf80e4152aefd7a3fd4bbf2db5bf7c7d9d156492061f7755
SHA3-384 hash: 2f7bca9374ad2f55db8cf968a3b3a38d8becb1ddbff7d79f4b674df070e13c0180d2a3a5b6e86a1a44e93b650068d39f
SHA1 hash: 844223ce7cba68cffda7bfdb945c9f26a90d084e
MD5 hash: 3acd59ebe1e356e3c31003690cf506d9
humanhash: echo-magazine-dakota-finch
File name:crypted_704726.bat
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:2'204'510 bytes
First seen:2025-11-10 10:50:21 UTC
Last seen:Never
File type:Batch (bat) bat
MIME type:text/plain
ssdeep 24576:fJdaTXopdl3W0sp95mNcbEzQMYQ9Lg6OMK1fGGpOBkWx6JdRGFn4Mrw1ZlIzz2MP:fd+bdTtm2A6lktNzRa6/DcGKc
TLSH T1DAA50223BECDDBF0CC69427CF464CA536082E27D17B760ADE151E8D2990D6CAB09985F
Magika batch
Reporter smica83
Tags:bat QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
47
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
crypted_704726.bat
Verdict:
No threats detected
Analysis date:
2025-11-10 10:57:15 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/cc85d484-4e34-4ed2-8c0e-6d50cb6789c6

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/36687/
Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6911c3a4e2c9ded75d78f9db
Tags:
obfuscate xtreme shell
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Running batch commands
Creating a process with a hidden window
DNS request
Connection attempt
Launching cmd.exe command interpreter
Creating a file
Enabling the 'hidden' option for recently created files
Creating a window
Сreating synchronization primitives
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
cmd findstr lolbin obfuscated powershell
Link:
https://www.filescan.io/uploads/6911c3a2d63f755c32c412cf/reports/67531060-6d06-44b5-893b-7a737d095d18/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/cb85fe79fb4d6224bf80e4152aefd7a3fd4bbf2db5bf7c7d9d156492061f7755
Verdict:
Malicious
File Type:
unix shell
First seen:
2025-11-10T09:05:00Z UTC
Last seen:
2025-11-10T09:52:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/cb85fe79fb4d6224bf80e4152aefd7a3fd4bbf2db5bf7c7d9d156492061f7755/results?tab=lookup
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1811258
Signature
.NET source code contains potential unpacker
.NET source code contains process injector
.NET source code references suspicious native API functions
Contains functionality to disable the Task Manager (.Net Source)
Drops VBS files to the startup folder
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)
Modifies the context of a thread in another process (thread injection)
Sets debug register (to hijack the execution of another thread)
Sigma detected: Drops script at startup location
Sigma detected: Powerup Write Hijack DLL
Sigma detected: Register Wscript In Run Key
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)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Wscript called in batch mode (surpress errors)
Wscript starts Powershell (via cmd or directly)
Yara detected AntiVM3
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1811258 Sample: crypted_704726.bat Startdate: 10/11/2025 Architecture: WINDOWS Score: 100 89 ipwho.is 2->89 109 Sigma detected: Register Wscript In Run Key 2->109 111 Malicious sample detected (through community Yara rule) 2->111 113 Yara detected AntiVM3 2->113 115 11 other signatures 2->115 10 cmd.exe 1 2->10         started        13 wscript.exe 1 2->13         started        15 wscript.exe 2->15         started        17 wscript.exe 1 2->17         started        signatures3 process4 signatures5 123 Suspicious powershell command line found 10->123 125 Wscript starts Powershell (via cmd or directly) 10->125 19 powershell.exe 12 10->19         started        22 conhost.exe 10->22         started        127 Windows Scripting host queries suspicious COM object (likely to drop second stage) 13->127 129 Suspicious execution chain found 13->129 24 cmd.exe 1 13->24         started        26 conhost.exe 13->26         started        28 cmd.exe 15->28         started        30 cmd.exe 17->30         started        process6 signatures7 117 Drops VBS files to the startup folder 19->117 32 cmd.exe 1 19->32         started        35 powershell.exe 12 24->35         started        37 conhost.exe 24->37         started        119 Suspicious powershell command line found 28->119 121 Wscript starts Powershell (via cmd or directly) 28->121 39 powershell.exe 28->39         started        41 conhost.exe 28->41         started        43 powershell.exe 30->43         started        45 conhost.exe 30->45         started        process8 signatures9 95 Wscript starts Powershell (via cmd or directly) 32->95 47 powershell.exe 15 44 32->47         started        52 conhost.exe 32->52         started        54 cmd.exe 1 32->54         started        56 findstr.exe 1 32->56         started        58 cmd.exe 1 35->58         started        60 cmd.exe 39->60         started        62 cmd.exe 43->62         started        process10 dnsIp11 91 160.187.1.213, 4782, 49690, 49694 OCNNTTCommunicationsCorporationJP unknown 47->91 93 ipwho.is 15.204.213.5, 443, 49691, 49750 HP-INTERNET-ASUS United States 47->93 83 C:\Users\user\AppData\...\JOG6HKti8N.vbs, ASCII 47->83 dropped 85 C:\Users\user\AppData\...\Q8SF2P2e9T.vbs, ASCII 47->85 dropped 87 C:\Users\user\AppData\Local\...\4n8OIxgg.bat, ASCII 47->87 dropped 101 Sets debug register (to hijack the execution of another thread) 47->101 103 Modifies the context of a thread in another process (thread injection) 47->103 105 Hides that the sample has been downloaded from the Internet (zone.identifier) 47->105 64 powershell.exe 58->64         started        67 conhost.exe 58->67         started        77 2 other processes 58->77 107 Wscript starts Powershell (via cmd or directly) 60->107 69 powershell.exe 60->69         started        71 conhost.exe 60->71         started        79 2 other processes 60->79 73 powershell.exe 62->73         started        75 conhost.exe 62->75         started        81 2 other processes 62->81 file12 signatures13 process14 signatures15 97 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 69->97 99 Modifies the context of a thread in another process (thread injection) 69->99
Score:
98%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/cb85fe79fb4d6224bf80e4152aefd7a3fd4bbf2db5bf7c7d9d156492061f7755
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cb85fe79fb4d6224bf80e4152aefd7a3fd4bbf2db5bf7c7d9d156492061f7755/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zoc746p3jvrcjp4a4qksv36xup6uxpznww7xy7m5cvsjebq7o5kq._file
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar execution spyware trojan
Link:
https://tria.ge/reports/251110-mxxqbawqam/
Behaviour
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
An obfuscated cmd.exe command-line is typically used to evade detection.
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/cb85fe79fb4d6224bf80e4152aefd7a3fd4bbf2db5bf7c7d9d156492061f7755

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:Warp
Create hunting rule
Author:Seth Hardy
Description:Warp
Rule name:WarpStrings
Create hunting rule
Author:Seth Hardy
Description:Warp Identifying Strings

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/36687/

Comments