MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a58c8b458a1e1ea8000fd8314decaf3d28f2883e514cd22f1a2174610941011b. 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: 18


Intelligence 18 IOCs YARA 1 File information Comments
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SHA256 hash: a58c8b458a1e1ea8000fd8314decaf3d28f2883e514cd22f1a2174610941011b
SHA3-384 hash: 477f90e4bc25a490c5d7c1f4c115fab87296e0797a8d73ef52ef3cd10d90a01c606b184d4677d382eeb73dd6d123a24d
SHA1 hash: 9e3eeefb7d8af947709bd6e2f38b67a9408809fe
MD5 hash: 20e04263428ee7c59caeb7248e486ba9
humanhash: sierra-stream-mirror-london
File name:strinova.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:1'532'928 bytes
First seen:2025-10-17 18:24:45 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash a9c887a4f18a3fede2cc29ceea138ed3 (33 x CoinMiner, 17 x AsyncRAT, 15 x BlankGrabber)
ssdeep 24576:gfdnHuGifZcvF4JPCvo1JN1uClm9dm6QI5KaVm/ps/mxNcgVh5NBb4fl:YRHuGam4JPCQJNsOmIO0hsgzb4N
TLSH T1E165E06E2879B25FF508FD34DBB4D5B862EBD7F8714663284024F9F70E56B6582200A3
TrID 38.5% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
15.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
11.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
10.5% (.EXE) Win32 Executable (generic) (4504/4/1)
4.8% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika pebin
Reporter burger
Tags:exe Loader QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
91
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
quasar
Create hunting rule
ID:
1
File name:
strinova.exe
Verdict:
Malicious activity
Analysis date:
2025-10-17 18:23:35 UTC
Tags:
autohotkey loader susp-powershell ahk quasar
Link:
https://app.any.run/tasks/67cc9c8c-dbd2-4e03-ad7a-dfb4e93d36a4

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/33239/
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68f289fb0cffb3244298f71e
Tags:
autorun quasar autoit emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a process with a hidden window
Searching for the window
Creating a window
Setting a keyboard event handler
Setting a global event handler
Сreating synchronization primitives
Launching a process
Connection attempt
Sending a custom TCP request
Creating a file
Forced system process termination
Deleting a recently created file
Creating a file in the Windows subdirectories
Creating a file in the system32 subdirectories
Unauthorized injection to a recently created process
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/68f28a2adf5cb32bf1f15ed8/reports/5ea75d9d-b639-48d7-b66d-b15b504586b0/overview
Verdict:
Malicious
Labled as:
Razy.Generic
Link:
https://www.hybrid-analysis.com/sample/a58c8b458a1e1ea8000fd8314decaf3d28f2883e514cd22f1a2174610941011b
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-10-17T15:21:00Z UTC
Last seen:
2025-10-18T10:08:00Z UTC
Hits:
~100
Detections:
VHO:Trojan.MSIL.DOTHETUK.gen Trojan-Downloader.Agent.HTTP.C&C Trojan.Win32.Agent.sb HEUR:Trojan-Dropper.Win32.Agent.gen HEUR:Trojan.Win32.Generic Trojan-Downloader.Win32.Agent VHO:Trojan.MSIL.Convagent.gen VHO:Backdoor.MSIL.Crysan.gen Trojan-Downloader.Win32.Agent.xydkot NetTool.PowerShellGet.HTTP.C&C NetTool.PowerShellUA.HTTP.C&C
Link:
https://opentip.kaspersky.com/a58c8b458a1e1ea8000fd8314decaf3d28f2883e514cd22f1a2174610941011b/results?tab=lookup
Malware family:
Quasar RAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/15059818-1349-4d13-a253-686f1779955a
Result
Threat name:
AsyncRAT, Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1797341
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Contains functionality to detect sleep reduction / modifications
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Installs a global keyboard hook
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Powershell drops PE file
Reads the Security eventlog
Reads the System eventlog
Sample or dropped binary is a compiled AutoHotkey binary
Sample uses string decryption to hide its real strings
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: Invoke-Obfuscation CLIP+ Launcher
Sigma detected: Invoke-Obfuscation VAR+ Launcher
Sigma detected: Schedule system process
Sigma detected: Suspicious Scheduled Task Creation Involving Temp Folder
Sigma detected: Suspicious Script Execution From Temp Folder
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AsyncRAT
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1797341 Sample: strinova.exe Startdate: 17/10/2025 Architecture: WINDOWS Score: 100 47 vaxlet.duckdns.org 2->47 65 Found malware configuration 2->65 67 Malicious sample detected (through community Yara rule) 2->67 69 Antivirus detection for URL or domain 2->69 73 13 other signatures 2->73 10 strinova.exe 3 2->10         started        13 powershell.exe 2->13         started        15 fontdrvhost.exe 2->15         started        signatures3 71 Uses dynamic DNS services 47->71 process4 file5 41 C:\Users\user\AppData\Local\Temp\archer.exe, PE32 10->41 dropped 43 C:\Users\user\...\Strinova - Purple.exe, PE32+ 10->43 dropped 17 archer.exe 38 10->17         started        20 Strinova - Purple.exe 10->20         started        22 conhost.exe 13->22         started        process6 signatures7 53 Multi AV Scanner detection for dropped file 17->53 55 Loading BitLocker PowerShell Module 17->55 57 Reads the Security eventlog 17->57 59 Reads the System eventlog 17->59 24 fontdrvhost.exe 17->24         started        28 powershell.exe 14 16 17->28         started        31 WmiPrvSE.exe 17->31         started        33 4 other processes 17->33 61 Installs a global keyboard hook 20->61 63 Sample or dropped binary is a compiled AutoHotkey binary 20->63 process8 dnsIp9 49 vaxlet.duckdns.org 31.223.81.157, 1337 ASTURKNETTR Turkey 24->49 75 Antivirus detection for dropped file 24->75 77 Multi AV Scanner detection for dropped file 24->77 79 Uses schtasks.exe or at.exe to add and modify task schedules 24->79 83 2 other signatures 24->83 35 schtasks.exe 24->35         started        51 45.43.143.212, 49720, 80 CLOUD-SOUTHUS United States 28->51 45 C:\Users\user\AppData\...\fontdrvhost.exe, PE32 28->45 dropped 81 Powershell drops PE file 28->81 37 conhost.exe 28->37         started        file10 signatures11 process12 process13 39 conhost.exe 35->39         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a58c8b458a1e1ea8000fd8314decaf3d28f2883e514cd22f1a2174610941011b
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a58c8b458a1e1ea8000fd8314decaf3d28f2883e514cd22f1a2174610941011b/
Verdict:
Malicious
Threat:
Family.QUASAR
Link:
https://tip.neiki.dev/file/a58c8b458a1e1ea8000fd8314decaf3d28f2883e514cd22f1a2174610941011b
Threat name:
Win32.Dropper.Dapato
Create hunting rule
Status:
Malicious
First seen:
2025-10-17 18:25:01 UTC
File Type:
PE (Exe)
Extracted files:
1
AV detection:
20 of 24 (83.33%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uwgiwrmkdypkqaap3ayu33fphuupfcb6kfgnely2ef2gcckbaenq._file
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:office04 defense_evasion discovery execution persistence spyware trojan
Link:
https://tria.ge/reports/251017-w23lsssldj/
Behaviour
Modifies data under HKEY_USERS
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Command and Scripting Interpreter: PowerShell
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in System32 directory
Indicator Removal: File Deletion
Checks computer location settings
Executes dropped EXE
Badlisted process makes network request
Downloads MZ/PE file
Quasar RAT
Quasar family
Quasar payload
Malware Config
C2 Extraction:
vaxlet.duckdns.org:1337
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/272b2abf-374d-4bcb-9a2f-ee2da18fe9ef
Unpacked files
SH256 hash:
a58c8b458a1e1ea8000fd8314decaf3d28f2883e514cd22f1a2174610941011b
MD5 hash:
20e04263428ee7c59caeb7248e486ba9
SHA1 hash:
9e3eeefb7d8af947709bd6e2f38b67a9408809fe
Link:
https://www.unpac.me/results/dce1058a-c08b-49e6-88b4-48652ae99270/
SH256 hash:
61f245febadb40f8679ad94d2423642d16b4cb2ed0e43cdd2d10502248f6c61c
MD5 hash:
cdad30700f5bd72952ced558b7f2a046
SHA1 hash:
daa168122517a03a0875ccd93d3e41c0a734f49a
Link:
https://www.unpac.me/results/dce1058a-c08b-49e6-88b4-48652ae99270/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a58c8b458a1e/report/overview.html
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/a58c8b458a1e1ea8000fd8314decaf3d28f2883e514cd22f1a2174610941011b

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:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.

File information

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

QuasarRAT

Executable exe 99ad8a05662a178655ad915b6c94984303d16aa9499d65a80d7b26bc2d294a7f

QuasarRAT

Executable exe a58c8b458a1e1ea8000fd8314decaf3d28f2883e514cd22f1a2174610941011b

(this sample)

  
Dropped by
SHA256 99ad8a05662a178655ad915b6c94984303d16aa9499d65a80d7b26bc2d294a7f
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/33239/
  
Dropped by
MD5 eba09a554fe5f6d31933e9dbcb2b4d79
  
URLhaus
https://urlhaus.abuse.ch/url/3680434/

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