MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 d73c7447308464240a6e4dbec7d57156b0ce1d98f63f92e00a408f39ca04aff1. 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: 15
| SHA256 hash: | d73c7447308464240a6e4dbec7d57156b0ce1d98f63f92e00a408f39ca04aff1 |
|---|---|
| SHA3-384 hash: | 28bf160df96ac1757ea94d455e282a081176820f70865497474d9c41d4fe2c7f9aa2c79799ff545d7034b2dcc93be427 |
| SHA1 hash: | e5f5b62bde3642a32dd22f169e096e3be1a9123d |
| MD5 hash: | a9349a1013bc753ec323310c838de315 |
| humanhash: | connecticut-ohio-equal-juliet |
| File name: | tmp2DCD.tmp.bat |
| Download: | download sample |
| Signature | QuasarRAT |
| File size: | 702'024 bytes |
| First seen: | 2026-04-24 19:26:30 UTC |
| Last seen: | Never |
| File type: |  bat |
| MIME type: | text/x-msdos-batch |
| ssdeep | 12288:cyCGDzSnfTk/8R/sVZTrtoIMUpR2KB4YsrME5r1:B8Tku/sLrtoIfAKmXZ |
| Threatray | 3'086 similar samples on MalwareBazaar |
| TLSH | T128E4F20545CC2FADDEE85B2C90FD271E73A04A8A941A698AFF637D06AFBF544530F085 |
| Magika | batch |
| Reporter |  BastianHein |
| Tags: | bat QuasarRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
85
Origin country :
CLVendor Threat Intelligence
Malware configuration found for:
BatchScript
Details
Malware family:
n/a
ID:
1
File name:
bat
Verdict:
No threats detected
Analysis date:
2026-04-24 19:27:56 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
QuasarRAT
Detection(s):
Verdict:
Malicious
Score:
92.5%
Tags:
emotet quasar
Result
Verdict:
Malware
Maliciousness:
Behaviour
Delayed reading of the file
Creating a process from a recently created file
Сreating synchronization primitives
Creating a process with a hidden window
DNS request
Using the Windows Management Instrumentation requests
Connection attempt
Sending an HTTP GET request
Creating a window
Launching cmd.exe command interpreter
Creating a file in the %AppData% subdirectories
Launching a process
Enabling the 'hidden' option for recently created files
Creating a file
Creating a file in the %temp% directory
Setting a single autorun event
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
cmd lolbin masquerade obfuscated rundll32
Verdict:
Malicious
Labled as:
BAT/Agent.SBM trojan
Verdict:
Malicious
File Type:
unix shell
First seen:
2026-04-20T05:45:00Z UTC
Last seen:
2026-04-24T17:44:00Z UTC
Hits:
~10
Detections:
Trojan.MSIL.Quasar.sb Trojan.MSIL.Quasar.a Trojan-Dropper.Win32.Injector.sb Backdoor.MSIL.Cardinal.sb Trojan.Win32.Shellcode.sb HEUR:Trojan.BAT.Cobalt.gen Backdoor.Win32.Androm.sb Backdoor.MSIL.Agent.sb Trojan-Spy.Quasar.HTTP.ServerRequest PDM:Trojan.Win32.Generic Trojan.Win32.Agent.sb Trojan-Spy.MSIL.Downeks.sb Trojan-PSW.Win32.Stealer.sb Trojan-PSW.Win32.Xploder.sb Trojan-PSW.MSIL.Virinom.sb HEUR:Trojan.MSIL.Rozena.gen Backdoor.Quasar.TCP.C&C Trojan.Win32.Quasar.sb Trojan.PowerShell.Cobalt.sb
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Verdict:
Malicious
Threat:
Family.DONUTLOADER
Threat name:
Script-BAT.Backdoor.Quasar
Status:
Malicious
First seen:
2026-04-24 19:27:41 UTC
File Type:
Text (Batch)
AV detection:
10 of 24 (41.67%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
quasarrat
Similar samples:
+ 3'076 additional samples on MalwareBazaar
Result
Malware family:
quasar
Score:
10/10
Tags:
family:donutloader family:quasar defense_evasion execution loader persistence privilege_escalation spyware trojan
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Views/modifies file attributes
Adds Run key to start application
Command and Scripting Interpreter: PowerShell
Looks up external IP address via web service
Event Triggered Execution: Component Object Model Hijacking
Detects DonutLoader
Family: DonutLoader
Family: Quasar RAT
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
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 |
|---|
| Rule name: | BAT_Begin_Substring_Env |
|---|---|
| Author: | marcin@ulikowski.pl |
| Description: | Detects suspicious substring syntax at the begining of batch script |
| Reference: | https://cybersecurity.att.com/blogs/labs-research/seroxen-rat-for-sale |
| Rule name: | Disable_Defender |
|---|---|
| Author: | iam-py-test |
| Description: | Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen |
| Rule name: | Sus_CMD_Powershell_Usage |
|---|---|
| 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 |
|---|---|
| Author: | vietdx.mb |
| Rule name: | WIN_FileFix_Detection |
|---|---|
| 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.
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