MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 be5370686c2c4b8f69d7428ec4d7f5270ef6e8d6ea45b6846e3589bc289f69e9. 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: 21

Intelligence 21 IOCs YARA 29 File information Comments 1

SHA256 hash:	be5370686c2c4b8f69d7428ec4d7f5270ef6e8d6ea45b6846e3589bc289f69e9
SHA3-384 hash:	a5de8dad2c688a664eab7df828c3bfe4c4fd183250ad8c857bdeae1c998b34722a13100ce1b85aa225badac7c4f83fb1
SHA1 hash:	e78369b59597fa1bd39a765972a8ef0878a926ed
MD5 hash:	499b589acc9357b036e678699948270d
humanhash:	kilo-princess-hawaii-happy
File name:	unikey-64bit.exe
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	3'270'656 bytes
First seen:	2025-12-23 16:10:51 UTC
Last seen:	2025-12-25 08:31:48 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep	49152:1vee821/aQWl8P0lSk3aKA3Z+nl1s7dpb8oGdxTbTHHB72eh2NT:1vd821/aQWl8P0lSk3DA3Z+nfsc
Threatray	1'874 similar samples on MalwareBazaar
TLSH	T18BE55B1477F85E23E1ABE277E5B0445263F1F82EB363EB0B619166BE1C93B4048417A7
TrID	58.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 13.2% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 8.4% (.EXE) Win64 Executable (generic) (10522/11/4) 5.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.0% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika	pebin
Reporter	safe_securitix
Tags:	exe Quasar QuasarRAT

Intelligence

File Origin

# of uploads :

# of downloads :

117

Origin country :

Vendor Threat Intelligence

Details

Link:

https://research.acce.ciphertechsolutions.com/results/e3674013-71b2-4979-8f0d-b8474087deb4/

Malware family:

quasar

ID:

File name:

unikey-64bit.exe

Verdict:

Malicious activity

Analysis date:

2025-12-23 16:13:17 UTC

Tags:

quasar

Link:

https://app.any.run/tasks/057ccc7a-ebd8-43ee-a42a-0622187a3ee0

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/45877/

Detection(s):

Win.Malware.Generic-9883083-0

Win.Malware.Msilheracles-9900242-0

ditekSHen.MALWARE.Win.Trojan.QuasarStealer.UNOFFICIAL

Win.Packed.Downeks-6898097-0

Verdict:

Malicious

Score:

97.4%

Link:

https://cyber-fortress.com/docs/result/index.php?id=694abf27038f10550b551a57

Tags:

infosteal autorun quasar

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm base64 certreq expand explorer fingerprint infostealer lolbin obfuscated obfuscated quasar quasarrat reconnaissance runonce schtasks stealer tiger

Link:

https://www.filescan.io/uploads/694abf223f8fdbf8e9502918/reports/cf98cd9c-fb70-4610-92da-6dd313d90593/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/be5370686c2c4b8f69d7428ec4d7f5270ef6e8d6ea45b6846e3589bc289f69e9

Verdict:

Malicious

File Type:

exe x32

First seen:

2025-12-23T13:19:00Z UTC

Last seen:

2025-12-24T00:23:00Z UTC

Hits:

~10

Detections:

Trojan.MSIL.Quasar.a Trojan.MSIL.Donut.sb HEUR:Trojan-Spy.MSIL.Agent.sb HEUR:Trojan.MSIL.Quasar.gen Trojan-PSW.Win32.Stealer.sb Trojan-PSW.MSIL.Agent.sb Trojan.Win32.Quasar.sb PDM:Trojan.Win32.Tasker.cust

Link:

https://opentip.kaspersky.com/be5370686c2c4b8f69d7428ec4d7f5270ef6e8d6ea45b6846e3589bc289f69e9/results?tab=lookup

Malware family:

Quasar RAT

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/35941c6d-b102-4317-aa28-2d336ee51915

Score:

97%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/be5370686c2c4b8f69d7428ec4d7f5270ef6e8d6ea45b6846e3589bc289f69e9

Verdict:

inconclusive

YARA:

13 match(es)

Tags:

.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.31 Win 32 Exe x86

Link:

https://app.malva.re/file/499b589acc9357b036e678699948270d

Detection:

quasar

Link:

https://mwdb.cert.pl/sample/be5370686c2c4b8f69d7428ec4d7f5270ef6e8d6ea45b6846e3589bc289f69e9/

Verdict:

Malicious

Threat:

Family.QUASAR

Link:

https://tip.neiki.dev/file/be5370686c2c4b8f69d7428ec4d7f5270ef6e8d6ea45b6846e3589bc289f69e9

Threat name:

ByteCode-MSIL.Backdoor.Quasar

Status:

Malicious

First seen:

2025-12-23 16:11:16 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

28 of 36 (77.78%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=xzjxa2dmfrfy62oxikhmjv7ve4hpn2gw5jc3nbdogwe3yke7nhuq._file

Verdict:

malicious

Label(s):

quasarrat

QuasarRAT

2aeef6545efb7b271af6e284b6128a3d7031cf2bcafc782d7912d312bedbba01

QuasarRAT

8056a37cd65f2a24c5ddb99843cc744d8f78f7befd95dcd77f9c4c5bfc6f45d3

QuasarRAT

be5370686c2c4b8f69d7428ec4d7f5270ef6e8d6ea45b6846e3589bc289f69e9

QuasarRAT

de3d988b2edd466b35822193214d18be7b8a033f95f98e7bfefda145adbf9302

QuasarRAT

error

QuasarRAT

f5e49e7ec748a0b4cfdecdddc5fdfaf9f5b7f38f73e962a4017b402ba8143d02

QuasarRAT

+ 1'864 additional samples on MalwareBazaar

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar botnet:office04 discovery execution persistence spyware trojan

Link:

https://tria.ge/reports/251223-trvr4awnaw/

Behaviour

Runs ping.exe

Scheduled Task/Job: Scheduled Task

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

Enumerates physical storage devices

System Network Configuration Discovery: Internet Connection Discovery

Drops file in System32 directory

Checks computer location settings

Executes dropped EXE

Quasar RAT

Quasar family

Quasar payload

Malware Config

C2 Extraction:

sarahl.ru.com:4782
vietkey.sarahl.ru.com:4782
sun.win:4782
malware.sun.win:4782

Verdict:

Malicious

Tags:

rat quasar_rat stealer Win.Malware.Generic-9883083-0

YARA:

MAL_QuasarRAT_May19_1 malware_windows_quasarrat win_quasar_rat_client MALWARE_Win_Quasarstealer

Link:

https://app.threat.zone/submission/f4eae053-8540-4884-ba59-796639e23d70

Unpacked files

SH256 hash:

be5370686c2c4b8f69d7428ec4d7f5270ef6e8d6ea45b6846e3589bc289f69e9

MD5 hash:

499b589acc9357b036e678699948270d

SHA1 hash:

e78369b59597fa1bd39a765972a8ef0878a926ed

Detections:

QuasarRAT

Link:

https://www.unpac.me/results/a62f339e-6d6b-4583-a5e9-a0ec16c3d5a6/

Malware family:

QuasarRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/be5370686c2c/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/be5370686c2c4b8f69d7428ec4d7f5270ef6e8d6ea45b6846e3589bc289f69e9

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:	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 (http://www.lukeacha.com)
Description:	Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables

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 be5370686c2c4b8f69d7428ec4d7f5270ef6e8d6ea45b6846e3589bc289f69e9

(this sample)

Malpedia

https://malpedia.caad.fkie.fraunhofer.de/details/win.quasar_rat

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/45877/

Comments

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commented on 2025-12-23 16:16:20 UTC

RAT King Parser (https://github.com/jeFF0Falltrades/rat_king_parser) Output:

{
"sha256": "be5370686c2c4b8f69d7428ec4d7f5270ef6e8d6ea45b6846e3589bc289f69e9",
"yara_possible_family": "quasarrat",
"key": "7b990ddec3a1ddbdf02cea81dc29004a52008fc2384ab59265abbb1f976ff513",
"salt": "bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941",
"config": {
"obfuscated_key_1": "1.4.1",
"obfuscated_key_2": "sarahl.ru.com:4782;vietkey.sarahl.ru.com:4782;sun.win:4782;malware.sun.win:4782;",
"obfuscated_key_3": 3000,
"obfuscated_key_4": "SYSTEM",
"obfuscated_key_5": "VietKey",
"obfuscated_key_6": "vietkey.exe",
"obfuscated_key_7": true,
"obfuscated_key_8": true,
"obfuscated_key_9": "1037aa5e-4d7b-4e96-bd70-9a75bd845004",
"obfuscated_key_10": "Viet Key",
"obfuscated_key_11": false,
"obfuscated_key_12": true,
"obfuscated_key_13": "F116DDAE38E33B9D0D348291EF604EE1CEAE2461",
"obfuscated_key_14": "Office04",
"obfuscated_key_15": "Logs",
"obfuscated_key_16": "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",
"obfuscated_key_17": "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",
"obfuscated_key_18": true,
"obfuscated_key_19": false,
"obfuscated_key_20": "",
"obfuscated_key_21": "",
"obfuscated_key_22": false
}
}