MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c3a1146bf6e791105fdbd64cc28f99a7ff82f356ff8c5c155755bdc0b549c826. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c3a1146bf6e791105fdbd64cc28f99a7ff82f356ff8c5c155755bdc0b549c826
SHA3-384 hash: 3e7b00509eded992f3080bd0bd72531894198c44add049d1a13beaa4feb124737e50bcbc4b97cc7b7f918ba5682da610
SHA1 hash: 84db78f6af0e919d1456cb17c1759588bd546bff
MD5 hash: 66e7a3b0a4e9acb6340d9cab0e1ac5a3
humanhash: mississippi-july-twelve-july
File name:E-sign Payment confirmation and Agreement.vbs
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:1'610'233 bytes
First seen:2026-02-18 09:25:41 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 24576:MudUOW7qRmyemfXBTAxvguObSl6GQkn11s50055n4c2B6:Mui7qbheG5kQBpF
Threatray 101 similar samples on MalwareBazaar
TLSH T1FE751271867BBEBF09686D8A54133EC11C3CA3A3844CD1B3F6C569BBB2A55D0CD09A64
Magika vba
Reporter abuse_ch
Tags:QuasarRAT vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
55
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/53680/
Detection(s):
SecuriteInfo.com.Generic-EXE.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.PUA.Base64EXE-2.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.26270.JsHeur.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.26271.JsHeur.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=699585c81ebe863df4851786
Tags:
dropper micro remo
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug anti-vm base64 dropper masquerade obfuscated obfuscated packed
Link:
https://www.filescan.io/uploads/699585c610e80629d4e86c32/reports/e8963bdd-952c-47a3-8e9a-2eacc3fa3104/overview
Verdict:
Malicious
Labled as:
GT:VB.Dropper.2
Link:
https://www.hybrid-analysis.com/sample/c3a1146bf6e791105fdbd64cc28f99a7ff82f356ff8c5c155755bdc0b549c826
Verdict:
Malicious
File Type:
vbs
Detections:
HEUR:Trojan-Dropper.Script.Generic HEUR:Trojan.Script.Generic Trojan.MSIL.Agent.sb PDM:Trojan.Win32.Generic Backdoor.MSIL.PulsarRAT.le Trojan-PSW.MSIL.Agent.sb Trojan.Win64.Agentb.sb Trojan.Win32.Shellcode.sb Backdoor.MSIL.PulsarRAT.sb Trojan-Dropper.JS.SDrop.sb Backdoor.MSIL.Agent.sb Trojan-Downloader.JS.Cryptoload.sb
Link:
https://opentip.kaspersky.com/c3a1146bf6e791105fdbd64cc28f99a7ff82f356ff8c5c155755bdc0b549c826/results?tab=lookup
Result
Threat name:
DonutLoader, Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1870996
Signature
.NET source code contains potential unpacker
Benign windows process drops PE files
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Installs a global keyboard hook
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Potential evasive VBS script found (sleep loop)
Sample uses string decryption to hide its real strings
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Unusual module load detection (module proxying)
VBScript performs obfuscated calls to suspicious functions
Windows Scripting host queries suspicious COM object (likely to drop second stage)
WScript reads language and country specific registry keys (likely country aware script)
Yara detected DonutLoader
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1870996 Sample: E-sign Payment confirmation... Startdate: 18/02/2026 Architecture: WINDOWS Score: 100 28 ipwho.is 2->28 34 Suricata IDS alerts for network traffic 2->34 36 Found malware configuration 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 8 other signatures 2->40 7 wscript.exe 4 2->7         started        signatures3 process4 file5 16 C:\Users\user\AppData\...\application.exe, PE32+ 7->16 dropped 18 C:\Users\user\AppData\...\instructions.jpg, JPEG 7->18 dropped 42 Benign windows process drops PE files 7->42 44 VBScript performs obfuscated calls to suspicious functions 7->44 46 Windows Scripting host queries suspicious COM object (likely to drop second stage) 7->46 48 WScript reads language and country specific registry keys (likely country aware script) 7->48 11 application.exe 14 28 7->11         started        signatures6 process7 dnsIp8 30 45.8.22.100, 49685, 9555 REDSERVICIOES Spain 11->30 32 ipwho.is 172.66.175.107, 443, 49687 CLOUDFLARENETUS United States 11->32 20 C:\Users\user\AppData\Roaming\...\SharpDX.dll, PE32 11->20 dropped 22 C:\Users\user\...\SharpDX.Mathematics.dll, PE32 11->22 dropped 24 C:\Users\user\...\SharpDX.Direct3D11.dll, PE32 11->24 dropped 26 11 other files (none is malicious) 11->26 dropped 50 Hides that the sample has been downloaded from the Internet (zone.identifier) 11->50 52 Installs a global keyboard hook 11->52 54 Unusual module load detection (module proxying) 11->54 56 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 11->56 file9 signatures10
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/c3a1146bf6e791105fdbd64cc28f99a7ff82f356ff8c5c155755bdc0b549c826
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c3a1146bf6e791105fdbd64cc28f99a7ff82f356ff8c5c155755bdc0b549c826/
Verdict:
Malicious
Threat:
Family.DONUTLOADER
Link:
https://tip.neiki.dev/file/c3a1146bf6e791105fdbd64cc28f99a7ff82f356ff8c5c155755bdc0b549c826
Threat name:
Script-WScript.Trojan.Malgent
Create hunting rule
Status:
Malicious
First seen:
2026-02-18 10:12:43 UTC
AV detection:
13 of 38 (34.21%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yoqri27w46irax632zgmfd4zu77yf42w76gfyfkxkw64bnkjzata._file
Verdict:
malicious
Label(s):
donutloader
Create hunting rule
quasarrat
Create hunting rule
Similar samples:
0455ebce0a62e2413a730a8e172cde5e6171d2a3569c4620c7e10a6ff04a3710
QuasarRAT
09da583b39c72696ae98d24d518c838e4a59ba564074107df6528d9234c76253
QuasarRAT
0a2c887c8a3b30519f8c1750b8eba2df2ede2710b1fbb71f26c2acff3ececff8
QuasarRAT
2ad6a919f8256c9100324af50c0894527bb71f344ecdfe1e1f00b4e708ff8481
QuasarRAT
8b285bfafb3e876e29f04165896276d17f0998e2b02f97c90a28c34ab53ee866
QuasarRAT
9250584a4878cae6188ba7eafa667e4612afbfb89e2698bbc5ceb7fa17cddc08
QuasarRAT
d797019b2ff011ae71e9e700e8f9a16cb463af646aae4815654ae79e09f59ceb
QuasarRAT
e27288fcd6c3ccbadf90d37481ff6b407e31eeb33f775e5110be3e75401879b9
QuasarRAT
error
QuasarRAT
f7768221e22a36ee37655231cb332642f346610c8b2e05f1368e7b81409730fd
QuasarRAT
fff8ec58e389bfcec03ca66fe8bee39b849a948174472de91eb160ae35b78365
QuasarRAT
+ 91 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:donutloader family:quasar loader spyware trojan
Link:
https://tria.ge/reports/260218-legqpsez8d/
Behaviour
Suspicious behavior: AddClipboardFormatListener
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Checks computer location settings
Executes dropped EXE
Detects DonutLoader
DonutLoader
Donutloader family
Quasar RAT
Quasar family
Quasar payload
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.40
Link:
https://yomi.yoroi.company/submissions/c3a1146bf6e791105fdbd64cc28f99a7ff82f356ff8c5c155755bdc0b549c826

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/53680/

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