MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 525b378c9abf58b083365cd178a7a611c19ae0107346a714df6ba450eed172ab. 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: 19

Intelligence 19 IOCs YARA 30 File information Comments

SHA256 hash:	525b378c9abf58b083365cd178a7a611c19ae0107346a714df6ba450eed172ab
SHA3-384 hash:	f5bfc636d3b509cd6096666d896afd02a6840e4f42423b383f600276254cd11134f27be54debe3e89fd3a3fbf82cbdbf
SHA1 hash:	84eb6830359365896e55ea6cd1e9555b1fe769cd
MD5 hash:	9af0a77bfadaa41b1ae3c2fbe697d268
humanhash:	magazine-friend-crazy-oranges
File name:	file
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	3'266'048 bytes
First seen:	2026-08-09 00:44:58 UTC
Last seen:	2026-08-09 01:10:30 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (49'191 x AgentTesla, 20'339 x Formbook, 12'364 x SnakeKeylogger)
ssdeep	49152:LvXlL26AaNeWgPhlmVqvMQ7XSKD9RJ6UbR3LoGdvLvTHHB72eh2NT:LvVL26AaNeWgPhlmVqkQ7XSKD9RJ6ef
TLSH	T120E56B143BF85E27E1BBE277E5B0041267F0FC1AB363EB0B6581677A1C53B5098426A7
TrID	60.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 13.7% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 5.4% (.EXE) Win64 Executable (generic) (6522/11/2) 4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika	pebin
Reporter	Bitsight
Tags:	d52f85 dropped-by-amadey exe QuasarRAT

Bitsight

url: http://62.60.226.140/files/5223853602/uDSthxb.exe

Intelligence

File Origin

# of uploads :

# of downloads :

199

Origin country :

Vendor Threat Intelligence

Malware configuration found for:

QuasarRAT

Details

Link:

https://research.acce.ciphertechsolutions.com/results/836185cc-b8f3-4dc8-ac1e-a8de6d7ffeb3/

Malware family:

quasar

ID:

File name:

exe

Verdict:

Malicious activity

Analysis date:

2026-08-09 00:54:19 UTC

Tags:

quasar

Link:

https://app.any.run/tasks/e19512ed-40e8-4371-964a-c716ef22ce12

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

QuasarRAT

Link:

https://www.capesandbox.com/analysis/79333/

Detection(s):

Win.Malware.Generic-9883083-0

Win.Malware.Msilheracles-9900242-0

ditekSHen.MALWARE.Win.Trojan.QuasarStealer.UNOFFICIAL

Win.Packed.Downeks-6898097-0

YARA.DITEKSHEN_MALWARE_Win_Quasarstealer.UNOFFICIAL

YARA.SIGNATURE_BASE_MAL_Quasarrat_May19_1.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

Setting a keyboard event handler

Connection attempt

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm base64 certreq config-extracted expand explorer fingerprint infostealer keylogger lolbin obfuscated obfuscated quasarrat quasarrat reconnaissance remoteaccesstool runonce schtasks stealer

Link:

https://www.filescan.io/uploads/6a77cdb6cc8a618684d74386/reports/fbb0008a-6434-4149-aaf6-c2da9fa7e3cf/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/525b378c9abf58b083365cd178a7a611c19ae0107346a714df6ba450eed172ab

Verdict:

Malicious

File Type:

exe x32

First seen:

2026-08-08T22:52:00Z UTC

Last seen:

2026-08-10T21:22:00Z UTC

Hits:

~100

Link:

https://opentip.kaspersky.com/525b378c9abf58b083365cd178a7a611c19ae0107346a714df6ba450eed172ab/results?tab=lookup

Malware family:

Quasar RAT

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/4fc95291-bf78-4e7e-8061-2ed91431c3e6

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/525b378c9abf58b083365cd178a7a611c19ae0107346a714df6ba450eed172ab

Gathering data

Detection:

quasar

Link:

https://mwdb.cert.pl/sample/525b378c9abf58b083365cd178a7a611c19ae0107346a714df6ba450eed172ab/

Threat name:

ByteCode-MSIL.Backdoor.Quasar

Status:

Malicious

First seen:

2026-08-09 00:45:47 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

23 of 24 (95.83%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=kjntpde2x5mlbazwltixrj5gchazvyaqondkofg7nosfb3wrokvq._file

Verdict:

malicious

Label(s):

QuasarRAT

Link:

https://reports.threatray.com/1c292caf-7116-4c61-ac1a-11551a9b8b2e

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar botnet:office04 spyware trojan

Link:

https://tria.ge/reports/260809-a4fddsgb25/

Behaviour

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of SetWindowsHookEx

Enumerates physical storage devices

Family: Quasar RAT

Quasar payload

Malware Config

C2 Extraction:

145.63.135.73:4782

Unpacked files

SH256 hash:

525b378c9abf58b083365cd178a7a611c19ae0107346a714df6ba450eed172ab

MD5 hash:

9af0a77bfadaa41b1ae3c2fbe697d268

SHA1 hash:

84eb6830359365896e55ea6cd1e9555b1fe769cd

Detections:

QuasarRAT

Link:

https://www.unpac.me/results/78cbc357-86e7-4b25-956f-698cd8cda9c2/

Malware family:

QuasarRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/525b378c9abf/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/525b378c9abf58b083365cd178a7a611c19ae0107346a714df6ba450eed172ab

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:	BLOWFISH_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for Blowfish constants

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:	DetectEncryptedVariants Create hunting rule
Author:	Zinyth
Description:	Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded

Rule name:	Detect_PowerShell_Obfuscation Create hunting rule
Author:	daniyyell
Description:	Detects obfuscated PowerShell commands commonly used in malicious scripts.

Rule name:	Diff_QuasarRAT_01 Create hunting rule
Author:	schmidtsz
Description:	Identify QuasarRAT samples

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

Rule name:	INDICATOR_SUSPICIOUS_Binary_References_Browsers Create hunting rule
Author:	ditekSHen
Description:	Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

Rule name:	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA Create hunting rule
Author:	ditekSHen
Description:	Detects Windows executables referencing non-Windows User-Agents

Rule name:	INDICATOR_SUSPICIOUS_GENInfoStealer Create hunting rule
Author:	ditekSHen
Description:	Detects executables containing common artifacts observed in infostealers

Rule name:	Lumma_Stealer_Detection Create hunting rule
Author:	ashizZz
Description:	Detects a specific Lumma Stealer malware sample using unique strings and behaviors
Reference:	https://seanthegeek.net/posts/compromized-store-spread-lumma-stealer-using-fake-captcha/

Rule name:	MALWARE_Win_QuasarStealer Create hunting rule
Author:	ditekshen
Description:	Detects Quasar infostealer

Rule name:	MAL_QuasarRAT_May19_1 Create hunting rule
Description:	Detects QuasarRAT malware

Rule name:	MAL_QuasarRAT_May19_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects QuasarRAT malware
Reference:	https://blog.ensilo.com/uncovering-new-activity-by-apt10

Rule name:	MAL_QuasarRAT_May19_1_RID2E1E Create hunting rule
Author:	Florian Roth
Description:	Detects QuasarRAT malware
Reference:	https://blog.ensilo.com/uncovering-new-activity-by-apt10

Rule name:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

Rule name:	Multifamily_RAT_Detection Create hunting rule
Author:	Lucas Acha (https://www.lukeacha.com)
Description:	Generic detection for multiple RAT families, PUPs, packers and suspicious executables. NOTE: This rule may produce false positives. Updated May 2026 to reduce False Positives.

Rule name:	NET Create hunting rule
Author:	malware-lu

Rule name:	NETexecutableMicrosoft Create hunting rule
Author:	malware-lu

Rule name:	pe_imphash Create hunting rule

Rule name:	quasarrat Create hunting rule
Author:	jeFF0Falltrades

Rule name:	quasarrat_kingrat Create hunting rule
Author:	jeFF0Falltrades

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

Rule name:	RC6_Constants Create hunting rule
Author:	chort (@chort0)
Description:	Look for RC6 magic constants in binary
Reference:	https://twitter.com/mikko/status/417620511397400576

Rule name:	RIPEMD160_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for RIPEMD-160 constants

Rule name:	SHA1_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA1 constants

Rule name:	SHA512_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA384/SHA512 constants

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:	Windows_Generic_Threat_803feff4 Create hunting rule
Author:	Elastic Security

Rule name:	win_quasar_rat_client Create hunting rule
Author:	Matthew @ Embee_Research
Description:	Detects strings present in Quasar Rat Samples.

File information

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

Web download

QuasarRAT

exe 525b378c9abf58b083365cd178a7a611c19ae0107346a714df6ba450eed172ab

(this sample)

Dropped by

Amadey

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/79333/

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