MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f66a4ee15f672bbf9259027eb286f369bfa81a3aa979f547415b831d22d031b5. 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: 16


Intelligence 16 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f66a4ee15f672bbf9259027eb286f369bfa81a3aa979f547415b831d22d031b5
SHA3-384 hash: a8767807f062c475900609f9fd4889678a925bdefd639e81f6d3d39a567ca6cb8f87104e26cf840bcca75fe2826e9247
SHA1 hash: 4c61c08e4d5f1ae192920bcfffbd6976345ec07a
MD5 hash: bb5867fd9a72c96717ecae61e75e426c
humanhash: november-bluebird-golf-west
File name:file
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:1'553'408 bytes
First seen:2025-09-07 04:01:41 UTC
Last seen:2025-09-07 04:06:04 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 24576:67/IRl0i+euB1tRwbyRNHZXva9fcZq0CQkaTAfVq05pmT1W5kaSa0csy49LnA3/B:lRl8RtRbFE0CQ7TIVUBW5Qamy4tAvI6
Threatray 96 similar samples on MalwareBazaar
TLSH T194753327E16918C3D2109DBB8D1DD5C9283B769B22DFDEB575A12EF65E800242CEF60C
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter Bitsight
Tags:dropped-by-amadey exe QuasarRAT


Avatar
Bitsight
url: http://178.16.54.200/files/6849343518/0srAxLR.exe

Intelligence

File Origin
# of uploads :
4
# of downloads :
82
Origin country :
US US
Vendor Threat Intelligence
Malware family:
redline
Create hunting rule
ID:
1
File name:
download.php
Verdict:
Malicious activity
Analysis date:
2025-09-06 19:26:36 UTC
Tags:
auto redline stealer lumma amadey botnet arch-exec loader themida telegram gcleaner stealc vidar autoit rdp anti-evasion purecrypter generic remote xworm ddr miner silentcryptominer purelogs winring0-sys vuln-driver rustystealer python github xmrig arch-doc evasion rat njrat bladabindi quasar
Link:
https://app.any.run/tasks/0852b14d-5794-4fa1-9399-58959bc3ccc6

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/26076/
Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68bd03dceb163e0ec1852fbd
Tags:
bladabindi autorun
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the system32 subdirectories
Launching a process
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Creating a file
Connection attempt to an infection source
Sending a TCP request to an infection source
Setting a keyboard event handler
Sending a custom TCP request
Unauthorized injection to a recently created process
Query of malicious DNS domain
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/68bd03e920d0ee406d9886ea/reports/a7be2ed3-1d8b-4e79-8699-67ea93bb68e4/overview
Verdict:
Malicious
Labled as:
IL:Trojan.MSILZilla
Link:
https://www.hybrid-analysis.com/sample/f66a4ee15f672bbf9259027eb286f369bfa81a3aa979f547415b831d22d031b5
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-06T20:01:00Z UTC
Last seen:
2025-09-06T20:01:00Z UTC
Hits:
~10
Detections:
Trojan.MSIL.Quasar.a Trojan.MSIL.Donut.sb PDM:Trojan.Win32.Tasker.cust PDM:Trojan.Win32.Generic HEUR:Trojan.Win32.Generic HEUR:Trojan.MSIL.Cryptos.gen HEUR:Trojan.MSIL.Quasar.gen Trojan-PSW.MSIL.Agent.sb NetTool.TunnelLocaltonet.UDP.C&C BSS:Trojan.Win32.Generic
Link:
https://opentip.kaspersky.com/f66a4ee15f672bbf9259027eb286f369bfa81a3aa979f547415b831d22d031b5/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/dfdaf3b1-8d34-4097-a6eb-369732e7fe56
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f66a4ee15f672bbf9259027eb286f369bfa81a3aa979f547415b831d22d031b5
Verdict:
inconclusive
YARA:
6 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.62 Win 32 Exe x86
Link:
https://app.malva.re/file/bb5867fd9a72c96717ecae61e75e426c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f66a4ee15f672bbf9259027eb286f369bfa81a3aa979f547415b831d22d031b5/
Verdict:
Malicious
Threat:
Trojan.MSIL.Quasar
Link:
https://tip.neiki.dev/file/f66a4ee15f672bbf9259027eb286f369bfa81a3aa979f547415b831d22d031b5
Threat name:
ByteCode-MSIL.Trojan.Zilla
Create hunting rule
Status:
Malicious
First seen:
2025-09-07 00:54:28 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
28 of 38 (73.68%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6zve5yk7m4v37eszaj7lfbxtng72qgr2vf47kr2blobr2iwqgg2q._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
62e2c7d860a0e3e0975c5b9da5193f9ab3ca6c56ef4eea46d17cc87ac4598b90
QuasarRAT
9f8b05f57597f6a61089e954ea1c2dfa24f1a4a72c5a2ff883a9fabb1203f658
QuasarRAT
bf2ef5b129882d9a508c72a6afefede8ca7de3db89e5b3754ca8c470e27122ba
QuasarRAT
e553c34b8aabb6ad42dfdb8a77759b32c6c035f2fc82618eefa2261c71dee761
QuasarRAT
eb72d6dd2158ce9ad453f8ecfd5d6900cce588c196ae5806268cbaf3475848da
QuasarRAT
error
QuasarRAT
+ 86 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
execution persistence
Link:
https://tria.ge/reports/250907-el7r5scj2v/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: AddClipboardFormatListener
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Drops file in System32 directory
Executes dropped EXE
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/e885542d-0baf-4218-828f-f5249fb4ecff
Unpacked files
SH256 hash:
f66a4ee15f672bbf9259027eb286f369bfa81a3aa979f547415b831d22d031b5
MD5 hash:
bb5867fd9a72c96717ecae61e75e426c
SHA1 hash:
4c61c08e4d5f1ae192920bcfffbd6976345ec07a
Link:
https://www.unpac.me/results/a47dd3fe-3433-45e4-8ed3-6ec0a1d0ce55/
SH256 hash:
cc496ba1a167b9c0c8d5b86a43163a1ad0ac46a1e74f0b5de76448f0a4b4cf39
MD5 hash:
a39c571de9a8ba62f3c8fde8b62fbd12
SHA1 hash:
44c974e3487017953f29cebff1ebdf7fe5585e59
Link:
https://www.unpac.me/results/a47dd3fe-3433-45e4-8ed3-6ec0a1d0ce55/
SH256 hash:
934db9fbebd0815fc0d3ea12e55328fae15f975378c57e8c9409ef4fe40095d7
MD5 hash:
cbcbda01b8996b4aecb6ef4bde6f8f08
SHA1 hash:
cd0d9392ea82551d11e24a52dd0d2873405a3a83
Detections:
SUSP_NET_Large_Static_Array_In_Small_File_Jan24
Create hunting rule
HKTL_NET_GUID_Quasar
Create hunting rule
Link:
https://www.unpac.me/results/a47dd3fe-3433-45e4-8ed3-6ec0a1d0ce55/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f66a4ee15f67/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/f66a4ee15f672bbf9259027eb286f369bfa81a3aa979f547415b831d22d031b5

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_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

Web download

QuasarRAT

Executable exe f66a4ee15f672bbf9259027eb286f369bfa81a3aa979f547415b831d22d031b5

(this sample)

  
Dropped by
Amadey
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/26076/
  
URLhaus
https://urlhaus.abuse.ch/url/3617804/

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