MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f18a34552062be2e2912e9990b01eb7b6d2ca5749b54ae3076a666f596900e44. 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: 20

Intelligence 20 IOCs YARA 28 File information Comments 1

SHA256 hash:	f18a34552062be2e2912e9990b01eb7b6d2ca5749b54ae3076a666f596900e44
SHA3-384 hash:	c3108f96aeb972e7d840bab5bdea6ae99888d808555c1c45fa634c358fce428905d16016bc755f766ff825a1e15a3b88
SHA1 hash:	ff554920168e4861b0550c34c23a421053ac92f4
MD5 hash:	8cf1432ef781c40afcd908769dfa887e
humanhash:	six-speaker-september-avocado
File name:	svchost-17485123.exe
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	3'267'584 bytes
First seen:	2026-01-29 13:37:35 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'752 x AgentTesla, 19'657 x Formbook, 12'248 x SnakeKeylogger)
ssdeep	49152:pvkqa2JDaIncSPQlgfHpdARpyi1F+nfNyA2URykCILoGXwTHHB72eh2NT:pv/a2JDaIncSPQlgfHXARpyYFIfNyi
Threatray	2'039 similar samples on MalwareBazaar
TLSH	T1BFE5590477F85E32E1AAD37395F0541367F0FC2AB3A3EB0B6591677A1C93B4098426A7
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	Anonymous
Tags:	backdoor exe msi Quasar QuasarRAT RAT remote-access-trojan

Intelligence

File Origin

# of uploads :

# of downloads :

125

Origin country :

Vendor Threat Intelligence

Details

Link:

https://research.acce.ciphertechsolutions.com/results/50c75552-89eb-45e0-9a67-5c3269ac37d9/

Malware family:

quasar

ID:

File name:

svchost-17485123.exe

Verdict:

Malicious activity

Analysis date:

2026-01-29 13:38:19 UTC

Tags:

quasar

Link:

https://app.any.run/tasks/3b7c7654-fa8c-40e7-9de1-70430918445a

Note:

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

Gathering data

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=697b62d9bec9764f452fd456

Tags:

infosteal autorun quasar

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

Creating a file in the system32 subdirectories

Launching a process

Creating a process from a recently created file

Creating a file

Setting a keyboard event handler

DNS request

Connection attempt

Sending a custom TCP request

Unauthorized injection to a recently created process

Enabling autorun by creating a file

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

base64 infostealer obfuscated obfuscated reconnaissance stealer

Link:

https://www.filescan.io/uploads/697b62d5c9bfb60ece190bc6/reports/c608f0b2-5abc-4dc8-8538-96cee929286c/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/f18a34552062be2e2912e9990b01eb7b6d2ca5749b54ae3076a666f596900e44

Verdict:

Malicious

File Type:

exe x32

First seen:

2026-01-29T10:44:00Z UTC

Last seen:

2026-01-29T13:18:00Z UTC

Hits:

~100

Detections:

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

Link:

https://opentip.kaspersky.com/f18a34552062be2e2912e9990b01eb7b6d2ca5749b54ae3076a666f596900e44/results?tab=lookup

Malware family:

Quasar RAT

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/03815309-c4e4-4bfd-8767-6d9be0548d73

Score:

98%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/f18a34552062be2e2912e9990b01eb7b6d2ca5749b54ae3076a666f596900e44

Gathering data

Detection:

quasar

Link:

https://mwdb.cert.pl/sample/f18a34552062be2e2912e9990b01eb7b6d2ca5749b54ae3076a666f596900e44/

Verdict:

Malicious

Threat:

Family.QUASARRAT

Link:

https://tip.neiki.dev/file/f18a34552062be2e2912e9990b01eb7b6d2ca5749b54ae3076a666f596900e44

Threat name:

ByteCode-MSIL.Backdoor.Quasar

Status:

Malicious

First seen:

2026-01-29 13:38:30 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

22 of 24 (91.67%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=6gfdivjamk7c4kis5gmqwaplpnwszjlutnkk4mdwuztplfuqbzca._file

Verdict:

malicious

Label(s):

quasarrat

QuasarRAT

4409a082e2b18f4b19668b7311ee4a882c8bd76ddad7272b1f042d0e5f828e82

QuasarRAT

7d24b4af7a5b9e599862bf1566c64e6465871cf3d360676346088eb2f176ae07

QuasarRAT

be5370686c2c4b8f69d7428ec4d7f5270ef6e8d6ea45b6846e3589bc289f69e9

QuasarRAT

error

QuasarRAT

+ 2'029 additional samples on MalwareBazaar

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar botnet:office04 execution persistence spyware trojan

Link:

https://tria.ge/reports/260129-qxlvlahv9e/

Behaviour

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

Drops file in System32 directory

Executes dropped EXE

Quasar RAT

Quasar family

Quasar payload

Malware Config

C2 Extraction:

nog.jp.net:4782
nog.jp.net:443
nog.jp.net:8888
nog.jp.net:9999
nog.jp.net:80
nog.jp.net:8080
nog.jp.net:8848
license.eu.com:4782
license.eu.com:443
license.eu.com:8888
license.eu.com:9999
license.eu.com:80
license.eu.com:8080
license.eu.com:8848
vyy.uk.com:4782
vyy.uk.com:443
vyy.uk.com:8888
vyy.uk.com:9999
vyy.uk.com:80
vyy.uk.com:8848
s666vn.press:4782
s666vn.press:443
s666vn.press:8888
s666vn.press:9999
s666vn.press:80
s666vn.press:8080
s666vn.press:8848

Unpacked files

SH256 hash:

f18a34552062be2e2912e9990b01eb7b6d2ca5749b54ae3076a666f596900e44

MD5 hash:

8cf1432ef781c40afcd908769dfa887e

SHA1 hash:

ff554920168e4861b0550c34c23a421053ac92f4

Detections:

QuasarRAT

Link:

https://www.unpac.me/results/2d9ef9e1-bb7f-4e8b-9e1a-b4289236b7bf/

Malware family:

QuasarRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/f18a34552062/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/f18a34552062be2e2912e9990b01eb7b6d2ca5749b54ae3076a666f596900e44

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:	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 f18a34552062be2e2912e9990b01eb7b6d2ca5749b54ae3076a666f596900e44

(this sample)

Link

https://www.virustotal.com/gui/file/f18a34552062be2e2912e9990b01eb7b6d2ca5749b54ae3076a666f596900e44

Dropping

QuasarRAT

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/50658/

Comments

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commented on 2026-01-29 13:41:13 UTC

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

{
"sha256": "f18a34552062be2e2912e9990b01eb7b6d2ca5749b54ae3076a666f596900e44",
"yara_possible_family": "quasarrat",
"key": "13d93453cd225a350dd658ee3fae96731d8a8c5bd5b4ba21852dd176d0bbbaca",
"salt": "bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941",
"config": {
"obfuscated_key_1": "1.4.1",
"obfuscated_key_2": "nog.jp.net:4782;nog.jp.net:443;nog.jp.net:8888;nog.jp.net:9999;nog.jp.net:80;nog.jp.net:8080;nog.jp.net:8848;license.eu.com:4782;license.eu.com:443;license.eu.com:8888;license.eu.com:9999;license.eu.com:80;license.eu.com:8080;license.eu.com:8848;vyy.uk.com:4782;vyy.uk.com:443;vyy.uk.com:8888;vyy.uk.com:9999;vyy.uk.com:80;vyy.uk.com:8848;s666vn.press:4782;s666vn.press:443;s666vn.press:8888;s666vn.press:9999;s666vn.press:80;s666vn.press:8080;s666vn.press:8848;",
"obfuscated_key_3": 3000,
"obfuscated_key_4": "SYSTEM",
"obfuscated_key_5": "NexaraIdentity",
"obfuscated_key_6": "NexaraIdentityFortress.exe",
"obfuscated_key_7": true,
"obfuscated_key_8": true,
"obfuscated_key_9": "NCS_NexaraIdentity_FortressLock_2d3e4f5g",
"obfuscated_key_10": "Nexara Identity Fortress Service",
"obfuscated_key_11": false,
"obfuscated_key_12": true,
"obfuscated_key_13": "C8FD60A827CCE7BB5BA008C5B7A576D7DB321B9A",
"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
}
}