MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b64b141eb3b3fa67f6605eb99b0e6f78eb5df7d483a2a0889821ccfac71a7a96. 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 37 File information Comments 1

SHA256 hash:	b64b141eb3b3fa67f6605eb99b0e6f78eb5df7d483a2a0889821ccfac71a7a96
SHA3-384 hash:	f1e71dc53f397882e58bfeac3b3b3530ff03014cb92bc0ed9b10b76f028b4ca172fbf6bbfb1904193bdddb43d2099af0
SHA1 hash:	8b6c4315e260954b6c33f450ad3baa9f79fe72e2
MD5 hash:	d0d7ce7681200387de77c7ab2e2841cd
humanhash:	jig-whiskey-nineteen-sad
File name:	jerniuiopu.exe
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	295'424 bytes
First seen:	2024-12-16 06:40:30 UTC
Last seen:	2025-02-04 05:43:33 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'854 x AgentTesla, 19'783 x Formbook, 12'304 x SnakeKeylogger)
ssdeep	6144:w7zO0LSclT6FOwEP5Kq+SMv0VGb7bDcllbk9n:OlJtTF9zVGkllbkh
Threatray	546 similar samples on MalwareBazaar
TLSH	T1CE545A2527F8A93BD8BE17B4F43141094B76FC07B517F78E6A5818B82C1A38985937E3
TrID	40.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 31.6% (.CPL) Windows Control Panel Item (generic) (57583/11/19) 9.0% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 5.7% (.EXE) Win64 Executable (generic) (10522/11/4) 3.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
Magika	pebin
Reporter	lontze7
Tags:	exe QuasarRAT

Intelligence

File Origin

# of uploads :

# of downloads :

354

Origin country :

Vendor Threat Intelligence

Malware family:

phorpiex

ID:

File name:

4363463463464363463463463.exe

Verdict:

Malicious activity

Analysis date:

2024-11-16 17:48:01 UTC

Tags:

phorpiex loader stealer stealc hausbomber opendir amadey botnet ssh github dcrat evasion cryptbot themida miner pastebin lumma adware netsupport unwanted remote python tas17

Link:

https://app.any.run/tasks/f944e19f-d771-4c0b-8a22-dbd92b11c6b3

Note:

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

Detection(s):

Win.Trojan.Barys-1

Win.Packed.Generic-9830106-0

Win.Packed.QuasarRAT-10012744-0

Win.Trojan.Generic-6295765-0

Win.Malware.Generic-6623004-0

Win.Trojan.Generic-6898101-0

Win.Trojan.Generic-6898102-0

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=675fcdd8653a8698dfd29851

Tags:

vmdetect autorun quasar

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Using the Windows Management Instrumentation requests

Сreating synchronization primitives

DNS request

Connection attempt

Sending an HTTP GET request

Launching a process

Setting a keyboard event handler

Creating a file in the %AppData% subdirectories

Creating a window

Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch

Enabling autorun by creating a file

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm anti-vm barys blackshades cmd crypto fingerprint hook infostealer keylogger lolbin obfuscated quasar quasarrat ransomware rat runonce schtasks stealer stealer vbnet vermin xrat

Link:

https://www.filescan.io/uploads/675fcb827367240fdf7c6150/reports/05946254-4ae3-4470-8575-816b8be1c878/overview

Verdict:

Malicious

Labled as:

Ransom.Imps.Generic

Link:

https://www.hybrid-analysis.com/sample/b64b141eb3b3fa67f6605eb99b0e6f78eb5df7d483a2a0889821ccfac71a7a96

Result

Verdict:

MALICIOUS

Details

Windows PE Executable

Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.

Malware family:

Quasar RAT

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/8f68c8d5-d6fa-48ba-b2a0-b2f9e73033e0

Result

Threat name:

Blackshades

Detection:

malicious

Classification:

rans.troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1575670

Signature

.NET source code references suspicious native API functions

AI detected suspicious sample

Antivirus / Scanner detection for submitted sample

Contains functionality to disable the Task Manager (.Net Source)

Deletes shadow drive data (may be related to ransomware)

Hides that the sample has been downloaded from the Internet (zone.identifier)

Installs a global keyboard hook

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Suricata IDS alerts for network traffic

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

Uses schtasks.exe or at.exe to add and modify task schedules

Yara detected Blackshades RAT

Yara detected Generic Downloader

Yara detected RansomwareGeneric

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/b64b141eb3b3fa67f6605eb99b0e6f78eb5df7d483a2a0889821ccfac71a7a96

Detection:

quasar

Link:

https://mwdb.cert.pl/sample/b64b141eb3b3fa67f6605eb99b0e6f78eb5df7d483a2a0889821ccfac71a7a96/

Threat name:

ByteCode-MSIL.Backdoor.Quasarrat

Status:

Malicious

First seen:

2024-10-30 01:02:11 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

34 of 38 (89.47%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=wzfrihvtwp5gp5tal24zwdtppdvv356uqorkbceyehgpvry2pkla._file

Verdict:

malicious

Label(s):

venomrat

QuasarRAT

3764d5269cce0d687d2004f7ded8672abffe660a3140e046a8265ecb89053049

QuasarRAT

49d3a6363261b6915cf925e115234347ea4d4bb1bfe603a52a58d764eb266f87

QuasarRAT

9d737c768d419aed55de299a114fb8b4928d263320caa4b35c08f4c0bb3fcb88

QuasarRAT

b19963afaca6cfb8252041c70bdeda48b029ac9be3411a61342490c48a472583

QuasarRAT

+ 536 additional samples on MalwareBazaar

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar botnet:office discovery spyware trojan

Link:

https://tria.ge/reports/241216-hfrqhsznck/

Behaviour

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

Looks up external IP address via web service

Quasar RAT

Quasar family

Quasar payload

Malware Config

C2 Extraction:

82.117.243.110:5173

Verdict:

Malicious

Tags:

rat quasar_rat azorult external_ip_lookup voidrat qasar_rat vermin vermin Win.Trojan.Barys-1

YARA:

malware_windows_quasarrat malware_Quasar_strings win_quasar_rat_client MALWARE_Win_QuasarRAT JPCERTCC_Quasar Quasar_RAT_1 MAL_QuasarRAT_May19_1

Link:

https://app.threat.zone/submission/58a2c54c-c8d5-4a50-b0b9-c441d8863e81

Unpacked files

SH256 hash:

b64b141eb3b3fa67f6605eb99b0e6f78eb5df7d483a2a0889821ccfac71a7a96

MD5 hash:

d0d7ce7681200387de77c7ab2e2841cd

SHA1 hash:

8b6c4315e260954b6c33f450ad3baa9f79fe72e2

Detections:

QuasarRAT

win_blackshades_w0

Link:

https://www.unpac.me/results/8645dfed-1f7e-47c6-8cb9-02dc2c5f051b/

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/b64b141eb3b3fa67f6605eb99b0e6f78eb5df7d483a2a0889821ccfac71a7a96

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:	BlackShades_4 Create hunting rule
Author:	Jean-Philippe Teissier / @Jipe_
Description:	BlackShades

Rule name:	CN_disclosed_20180208_KeyLogger_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects malware from disclosed CN malware set
Reference:	https://www.virustotal.com/graph/#/selected/n120z79z208z189/drawer/graph-details

Rule name:	CN_disclosed_20180208_KeyLogger_1_RID3227 Create hunting rule
Author:	Florian Roth
Description:	Detects malware from disclosed CN malware set
Reference:	https://www.virustotal.com/graph/#/selected/n120z79z208z189/drawer/graph-details

Rule name:	DebuggerCheck__API Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

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

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:	INDICATOR_SUSPICIOUS_GENRansomware Create hunting rule
Author:	ditekSHen
Description:	Detects command variations typically used by ransomware

Rule name:	malware_Quasar_strings Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect QuasarRAT in memory

Rule name:	MALWARE_Win_QuasarRAT Create hunting rule
Author:	ditekSHen
Description:	QuasarRAT payload

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 Create hunting rule
Description:	Detects QuasarRAT malware

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:	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:	Quasar Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect QuasarRAT in memory

Rule name:	quasarrat_kingrat Create hunting rule
Author:	jeFF0Falltrades

Rule name:	Quasar_RAT_1 Create hunting rule
Author:	@SOCRadar
Description:	Detects Quasar RAT

Rule name:	Quasar_RAT_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects Quasar RAT
Reference:	https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf

Rule name:	Quasar_RAT_1_RID2B54 Create hunting rule
Author:	Florian Roth
Description:	Detects Quasar RAT
Reference:	https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf

Rule name:	Quasar_RAT_2 Create hunting rule
Description:	Detects Quasar RAT

Rule name:	Quasar_RAT_2 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects Quasar RAT
Reference:	https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf

Rule name:	Quasar_RAT_2_RID2B55 Create hunting rule
Author:	Florian Roth
Description:	Detects Quasar RAT
Reference:	https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf

Rule name:	RansomPyShield_Antiransomware Create hunting rule
Author:	XiAnzheng
Description:	Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP)

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

Rule name:	Skystars_Malware_Imphash Create hunting rule
Author:	Skystars LightDefender
Description:	imphash

Rule name:	Vermin_Keylogger_Jan18_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects Vermin Keylogger
Reference:	https://researchcenter.paloaltonetworks.com/2018/01/unit42-vermin-quasar-rat-custom-malware-used-ukraine/

Rule name:	Windows_Trojan_Quasarrat_e52df647 Create hunting rule
Author:	Elastic Security

Rule name:	win_blackshades_w0 Create hunting rule
Author:	Jean-Philippe Teissier / @Jipe_

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

Rule name:	xRAT_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects Patchwork malware
Reference:	https://goo.gl/Pg3P4W

Rule name:	xRAT_1_RID2900 Create hunting rule
Author:	Florian Roth
Description:	Detects Patchwork malware
Reference:	https://goo.gl/Pg3P4W

File information

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

Web download

QuasarRAT

exe b64b141eb3b3fa67f6605eb99b0e6f78eb5df7d483a2a0889821ccfac71a7a96

(this sample)

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/3278555/

URLhaus

https://urlhaus.abuse.ch/url/3278584/

URLhaus

https://urlhaus.abuse.ch/url/3278659/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (HIGH_ENTROPY_VA)	high

Comments

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commented on 2024-12-16 06:45:48 UTC

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

{
"sha256": "b64b141eb3b3fa67f6605eb99b0e6f78eb5df7d483a2a0889821ccfac71a7a96",
"yara_possible_family": "quasarrat",
"key": "d4ab7c551ad7de1f861b080e61f6caf0",
"salt": "bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941",
"config": {
"INSTALL": false,
"STARTUP": true,
"HIDEFILE": false,
"ENABLELOGGER": true,
"HIDELOGDIRECTORY": true,
"HIDEINSTALLSUBDIRECTORY": 369360896,
"ENABLEPERSISTENCE": false,
"ENABLEANTISANDBOXIE": false,
"ENABLEANTIVM": false,
"ENABLEUSBSPREAD": false,
"ANTIDEBUG": false,
"STARTUPPERSISTENCE": false,
"ENABLEBTCSWAP": false,
"RECONNECTDELAY": 3000,
"SPECIALFOLDER": "APPLICATIONDATA",
"VERSION": "1.4.0.0",
"HOSTS": "82.117.243.110:5173;",
"KEY": "1WvgEMPjdwfqIMeM9MclyQ==",
"AUTHKEY": "NcFtjbDOcsw7Evd3coMC0y4koy/SRZGydhNmno81ZOWOvdfg7sv0Cj5ad2ROUfX4QMscAIjYJdjrrs41+qcQwg==",
"SUBDIRECTORY": "SubDir",
"INSTALLNAME": "csrss.exe",
"MUTEX": "yfsS9ida0wX8mgpdJC",
"STARTUPKEY": "NET framework",
"ENCRYPTIONKEY": "KDNBgA8jiBeGX1rj1dDt",
"TAG": "Office",
"LOGDIRECTORYNAME": "Logs",
"USBSpreadNAME": "",
"BTCAddress": ""
}
}