MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5c4239be04a1ead5ea81bc92463d72209411882b369dd58704769d409192e1ff. 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: 18

Intelligence 18 IOCs YARA 26 File information Comments

SHA256 hash:	5c4239be04a1ead5ea81bc92463d72209411882b369dd58704769d409192e1ff
SHA3-384 hash:	5fe21cd8ad46e3505bbe9b76c6af8c5749e36ecbf48c2429ed29c7c7420967471b47af5a95b0527d79d66ae3945cc5b3
SHA1 hash:	1c5c265f823208aa27d0df9cfa97ff382f32cf0c
MD5 hash:	b04c1d7a23fb7a01818661a60a0b5ae5
humanhash:	alaska-juliet-three-potato
File name:	xx.exe
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	3'266'048 bytes
First seen:	2024-12-13 09:59:59 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	49152:PvbI22SsaNYfdPBldt698dBcjHUv9w8BxzYoGdR+HTHHB72eh2NT:Pvk22SsaNYfdPBldt6+dBcjHiwbI
Threatray	961 similar samples on MalwareBazaar
TLSH	T113E56B0437F85E33E56BD2B3D5B05022A3F1E82AF363EB1B519167BE1C53B5488426A7
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 :

286

Origin country :

Vendor Threat Intelligence

Malware family:

asyncrat

ID:

File name:

xx.exe

Verdict:

Malicious activity

Analysis date:

2024-12-13 10:06:50 UTC

Tags:

rat asyncrat remote quasar

Link:

https://app.any.run/tasks/dd0a27d2-8bb7-439d-8d9f-92b56971163a

Note:

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

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:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=675c075e89dbe216235056fb

Tags:

infosteal quasar

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Creating a window

Сreating synchronization primitives

Connection attempt

Sending a custom TCP request

Verdict:

Malicious

Labled as:

Trojan.Agent

Link:

https://www.hybrid-analysis.com/sample/5c4239be04a1ead5ea81bc92463d72209411882b369dd58704769d409192e1ff

Result

Verdict:

MALICIOUS

Malware family:

Quasar RAT

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/50509c61-045f-41e6-be84-af318c6e0b46

Result

Threat name:

AsyncRAT, Quasar

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1574487

Signature

AI detected suspicious sample

Antivirus / Scanner detection for submitted sample

C2 URLs / IPs found in malware configuration

Found malware configuration

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

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

Yara detected AsyncRAT

Yara detected Generic Downloader

Yara detected Quasar RAT

Behaviour

Behavior Graph:

Download SVG

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/5c4239be04a1ead5ea81bc92463d72209411882b369dd58704769d409192e1ff

Detection:

quasar

Link:

https://mwdb.cert.pl/sample/5c4239be04a1ead5ea81bc92463d72209411882b369dd58704769d409192e1ff/

Threat name:

ByteCode-MSIL.Backdoor.Quasar

Status:

Malicious

First seen:

2024-12-13 00:54:06 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

21 of 24 (87.50%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=lrbdtpqeuhvnl2ubxsjemplseckbdcblg2o5lbyeo2oubems4h7q._file

Verdict:

malicious

Label(s):

quasarrat

QuasarRAT

3ad07a1878c8b77f9fc0143d8f88c240d8d0b986d015d4c0cd881ad9c0d572e1

QuasarRAT

4e6e48275b1f3412edc045e1a81d509ddcfe360c06bdd4483fcd5b4fc77b7ef3

QuasarRAT

8b745645c7ad72c79c48e6e17679426ef02350fb7ba021b1b031b36b65be2573

QuasarRAT

a451e748bc1e4c05bdaa722b35a5f6dd1a78765ac8967187a61b846f819c8bf6

QuasarRAT

ced760664a7c5580e324d99d695b119c1f3ec94d1d9c56d1d3882347f0c6eb10

QuasarRAT

error

QuasarRAT

+ 951 additional samples on MalwareBazaar

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar botnet:office04 spyware trojan

Link:

https://tria.ge/reports/241213-l1n2xawqdm/

Behaviour

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Enumerates physical storage devices

Quasar RAT

Quasar family

Quasar payload

Malware Config

C2 Extraction:

82.64.156.123:80

Verdict:

Malicious

Tags:

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

YARA:

malware_windows_quasarrat win_quasar_rat_client MAL_QuasarRAT_May19_1 MALWARE_Win_Quasarstealer

Link:

https://app.threat.zone/submission/32168eab-d625-4e86-af03-d691cf8b400e

Unpacked files

SH256 hash:

5c4239be04a1ead5ea81bc92463d72209411882b369dd58704769d409192e1ff

MD5 hash:

b04c1d7a23fb7a01818661a60a0b5ae5

SHA1 hash:

1c5c265f823208aa27d0df9cfa97ff382f32cf0c

Detections:

QuasarRAT

Link:

https://www.unpac.me/results/924be32a-4d61-4fe3-8bb8-2e1184b1a8ad/

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/5c4239be04a1ead5ea81bc92463d72209411882b369dd58704769d409192e1ff

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

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

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:	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_kingrat Create hunting rule
Author:	jeFF0Falltrades

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:	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:	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 5c4239be04a1ead5ea81bc92463d72209411882b369dd58704769d409192e1ff

(this sample)

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/3346851/

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

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