MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 65348e42e2663898e3c87af9b103e83567dc8045bdd8a4a95f430b4e99f032b3. 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 29 File information Comments

SHA256 hash:	65348e42e2663898e3c87af9b103e83567dc8045bdd8a4a95f430b4e99f032b3
SHA3-384 hash:	46441f6d2905c3fa65ebe4cc187aaf6851de2ba3d5dba2a9b9fad77cfc885b0e8e8233bf4773359f20c1a4763caa3846
SHA1 hash:	30005649c7c6b4b978ea805b33a77d84ec13a43b
MD5 hash:	e8113856b4f6fa34f18f0682e9ca6dfd
humanhash:	river-sink-black-pluto
File name:	Client.exe
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	3'265'536 bytes
First seen:	2025-11-22 23:57:20 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep	49152:2vkt62XlaSFNWPjljiFa2RoUYI7lqCOoGdLpTHHB72eh2NT:2v462XlaSFNWPjljiFXRoUYI7lqH
TLSH	T16CE56A103BF85E33E16BD6B3D5B0502267F1F82AF363EB5B2181667A1C53B6148427A7
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	Hexastrike
Tags:	exe QuasarRAT

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Malware family:

quasar

ID:

File name:

Client.exe

Verdict:

Malicious activity

Analysis date:

2025-11-23 04:27:01 UTC

Tags:

rat quasar remote auto-reg evasion

Link:

https://app.any.run/tasks/318babac-3cdb-4d29-a612-abe351d3c6e7

Note:

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

Detection:

QuasarStealer

Link:

https://www.capesandbox.com/analysis/39470/

Detection(s):

Win.Malware.Generic-9883083-0

Win.Malware.Msilheracles-9900242-0

Win.Packed.Downeks-6898097-0

ditekSHen.MALWARE.Win.Trojan.QuasarStealer.UNOFFICIAL

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=692257654917b5d23db0b22d

Tags:

infosteal autorun quasar

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

Creating a file in the %AppData% subdirectories

Launching a process

Enabling autorun by creating a file

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

base64 infostealer obfuscated obfuscated quasar quasarrat reconnaissance stealer

Link:

https://www.filescan.io/uploads/692254136c89728b9825cb50/reports/fce81201-726f-467c-af03-fa1830227b4f/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/65348e42e2663898e3c87af9b103e83567dc8045bdd8a4a95f430b4e99f032b3

Verdict:

Malicious

File Type:

exe x32

First seen:

2025-11-04T07:14:00Z UTC

Last seen:

2025-11-05T11:54:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/65348e42e2663898e3c87af9b103e83567dc8045bdd8a4a95f430b4e99f032b3/results?tab=lookup

Malware family:

Quasar RAT

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/a13515d5-e04b-4a7d-907f-6b41b309157c

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/65348e42e2663898e3c87af9b103e83567dc8045bdd8a4a95f430b4e99f032b3

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/e8113856b4f6fa34f18f0682e9ca6dfd

Detection:

quasar

Link:

https://mwdb.cert.pl/sample/65348e42e2663898e3c87af9b103e83567dc8045bdd8a4a95f430b4e99f032b3/

Threat name:

ByteCode-MSIL.Backdoor.Quasar

Status:

Malicious

First seen:

2025-11-07 12:11:39 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

29 of 36 (80.56%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=mu2i4qxcmy4jry6ipl43ca7igvt5zacfxxmkjkk7imfu5gpqgkzq._file

Result

Malware family:

quasar

Score:

10/10

Tags:

family:darktortilla family:quasar botnet:gift crypter discovery execution loader persistence spyware trojan

Link:

https://tria.ge/reports/251123-an4q2sgk8s/

Behaviour

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Looks up external IP address via web service

.NET Reactor proctector

Checks computer location settings

Executes dropped EXE

Darktortilla

Darktortilla family

Detects Darktortilla crypter.

Quasar RAT

Quasar family

Quasar payload

Malware Config

C2 Extraction:

gift.ydns.eu:6923

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/c3690fc9-172b-4944-b537-8abcd0b0765f

Unpacked files

SH256 hash:

65348e42e2663898e3c87af9b103e83567dc8045bdd8a4a95f430b4e99f032b3

MD5 hash:

e8113856b4f6fa34f18f0682e9ca6dfd

SHA1 hash:

30005649c7c6b4b978ea805b33a77d84ec13a43b

Detections:

QuasarRAT

cn_utf8_windows_terminal

malware_windows_xrat_quasarrat

MAL_QuasarRAT_May19_1

win_quasarrat_j2

win_quasar_rat_client

INDICATOR_SUSPICIOUS_Binary_References_Browsers

INDICATOR_SUSPICIOUS_GENInfoStealer

INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

MALWARE_Win_QuasarStealer

Link:

https://www.unpac.me/results/5449be2b-b31f-4133-a7a7-a86be4754756/

Parent samples :

75e978c27e6262cb702ceeb675c1daee950e477e0f5be0f7f65b834ea1b91682
65348e42e2663898e3c87af9b103e83567dc8045bdd8a4a95f430b4e99f032b3

Malware family:

QuasarRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/65348e42e266/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/65348e42e2663898e3c87af9b103e83567dc8045bdd8a4a95f430b4e99f032b3

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.

Cape

https://www.capesandbox.com/analysis/39470/

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