MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3240ba805b47c8113426171d02796e776b782cbd76560c024cbea07fbe519d7d. 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 29 File information Comments

SHA256 hash:	3240ba805b47c8113426171d02796e776b782cbd76560c024cbea07fbe519d7d
SHA3-384 hash:	b3631d48104e8cb8e85e04a6a97e3f145ba782553ee85795d78b75023ca28c92c781c5568472afdfe58944d4a8bb5cd7
SHA1 hash:	3901e5a27184bb9dd9357cf163d4821f2c174bd1
MD5 hash:	bf35f65935ed15f18560a0218af5bdc7
humanhash:	mississippi-lion-paris-carpet
File name:	Client.exe
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	4'898'816 bytes
First seen:	2025-03-23 18:27:31 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'672 x AgentTesla, 19'489 x Formbook, 12'212 x SnakeKeylogger)
ssdeep	98304:0kXjGVizBGDXiWlcMMJkCvchbdG9++sZsM0VGBk9DG:0aaX/uvu5INFM0Vi
Threatray	606 similar samples on MalwareBazaar
TLSH	T17E369DD2B609B5CFD58A12759527CF829D6C43B54F218AC3ECA8E4BEBD63CC111E9C24
TrID	46.4% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 29.5% (.EXE) Win64 Executable (generic) (10522/11/4) 12.6% (.EXE) Win32 Executable (generic) (4504/4/1) 5.6% (.EXE) Generic Win/DOS Executable (2002/3) 5.6% (.EXE) DOS Executable Generic (2000/1)
Magika	pebin
Reporter	BastianHein
Tags:	exe QuasarRAT

Intelligence

File Origin

# of uploads :

# of downloads :

481

Origin country :

Vendor Threat Intelligence

Malware family:

quasar

ID:

File name:

Client.exe

Verdict:

Malicious activity

Analysis date:

2025-03-23 18:41:52 UTC

Tags:

evasion quasar

Link:

https://app.any.run/tasks/0e0f8dcb-77ef-4df2-acae-71b05932774f

Note:

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

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=67e19668acb044ea849e7513

Tags:

vmdetect quasar

Result

Verdict:

Malware

Maliciousness:

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm anti-vm evasive fingerprint infostealer lolbin obfuscated obfuscated overlay packed packer_detected quasar quasarrat rat reconnaissance runonce schtasks stealer stealer vbnet

Link:

https://www.filescan.io/uploads/67e052b7a175d3177345bf9c/reports/b2ec49a6-54fd-45b6-9adb-562365b624f7/overview

Verdict:

Malicious

Labled as:

Dump:Generic.MSIL.PasswordStealerA

Link:

https://www.hybrid-analysis.com/sample/3240ba805b47c8113426171d02796e776b782cbd76560c024cbea07fbe519d7d

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/ffda990f-8194-4023-a734-e1779ce0f0db

Result

Threat name:

Quasar

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1646266

Signature

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Detected Quasar RAT

Drops PE files with benign system names

Found malware configuration

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

Installs a global keyboard hook

Joe Sandbox ML detected suspicious sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

PE file contains section with special chars

Sample uses string decryption to hide its real strings

Sigma detected: Files With System Process Name In Unsuspected Locations

Sigma detected: System File Execution Location Anomaly

Suricata IDS alerts for network traffic

System process connects to network (likely due to code injection or exploit)

Yara detected Quasar RAT

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/3240ba805b47c8113426171d02796e776b782cbd76560c024cbea07fbe519d7d

Detection:

quasar

Link:

https://mwdb.cert.pl/sample/3240ba805b47c8113426171d02796e776b782cbd76560c024cbea07fbe519d7d/

Threat name:

ByteCode-MSIL.Backdoor.Quasar

Status:

Malicious

First seen:

2025-03-23 18:28:10 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=gjalvac3i7ebcnbgc4oqe6loo5vxqlf5ozlayasmx2qh7psrtv6q._file

Verdict:

malicious

Label(s):

venomrat

QuasarRAT

36e218a56b1ac20ad3a0f11aa704594c103e497d7ef0bce75279f73b978858c3

QuasarRAT

3c3b47e05f6960d1fdf233949ba2881dd32341ea84240ce3e9b59f0d29ec9fa7

QuasarRAT

7ba74c87756877d4a5bdba9881052264bee75fb1b506fc6736400a4570d79b30

QuasarRAT

baed3d0dbb532abea5eb01c8e65d9cd4e9eb789b901e2615f68ad9c097087e68

QuasarRAT

error

QuasarRAT

+ 596 additional samples on MalwareBazaar

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar botnet:telegram discovery spyware trojan

Link:

https://tria.ge/reports/250323-w4chdszzhz/

Behaviour

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

Executes dropped EXE

Quasar RAT

Quasar family

Quasar payload

Malware Config

C2 Extraction:

212.56.35.232:101

Verdict:

Malicious

Tags:

rat quasar_rat Win.Packed.Generic-9829635-0 qasar_rat external_ip_lookup voidrat azorult

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/814a01c4-00c4-4a58-be93-b69b2420c267

Unpacked files

SH256 hash:

3240ba805b47c8113426171d02796e776b782cbd76560c024cbea07fbe519d7d

MD5 hash:

bf35f65935ed15f18560a0218af5bdc7

SHA1 hash:

3901e5a27184bb9dd9357cf163d4821f2c174bd1

Detections:

QuasarRAT

Link:

https://www.unpac.me/results/f498fa35-c2d9-464c-8f2a-ae55411381d1/

Malware family:

QuasarRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/3240ba805b47/report/overview.html

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

Threat name:

Quasar

Score:

0.90

Link:

https://yomi.yoroi.company/submissions/3240ba805b47c8113426171d02796e776b782cbd76560c024cbea07fbe519d7d

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:	DebuggerCheck__QueryInfo 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:	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:	NETexecutableMicrosoft 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 Create hunting rule
Author:	jeFF0Falltrades

Rule name:	QuasarRAT Create hunting rule
Author:	ditekshen
Description:	QuasarRAT payload

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:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

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

Rule name:	Sus_Obf_Enc_Spoof_Hide_PE Create hunting rule
Author:	XiAnzheng
Description:	Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

Rule name:	vmdetect Create hunting rule
Author:	nex
Description:	Possibly employs anti-virtualization techniques

Rule name:	Windows_Trojan_Quasarrat_e52df647 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.

No further information available

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
CHECK_NX	Missing Non-Executable Memory Protection	critical

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