MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5f2b5c871d9def423830873e376abeba49846bcd8cd8706e7eb02e3306ae85b2. 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: 15

Intelligence 15 IOCs YARA 26 File information Comments

SHA256 hash:	5f2b5c871d9def423830873e376abeba49846bcd8cd8706e7eb02e3306ae85b2
SHA3-384 hash:	05fcb33654901e6788ec60bcdb5009847acaa182875b83aa837958ed34b46ef7f3e5442e34b120ace96c4a8e56d3f17a
SHA1 hash:	888a9eefb742bdf3fb5e76f0cff5dee9cac44f45
MD5 hash:	47f7bc9ac7d7c93420777b21ad510895
humanhash:	mango-uranus-carolina-four
File name:	upx.exe
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	1'950'208 bytes
First seen:	2025-07-20 15:06:32 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'205 x SnakeKeylogger)
ssdeep	49152:IrZuW7rRFirm+Nn42KK8i7Ltwa+VVaSgo:IrZuYavNnoK8i7LtwbHJgo
TLSH	T150950110B3F68216F1BF5BB9A8B314450B77BA03AA36D34F198C609D1FA37409E52767
TrID	58.8% (.RLL) Microsoft Resource Library (x86) (177572/6/26) 24.2% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 5.4% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 3.4% (.EXE) Win64 Executable (generic) (10522/11/4) 2.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
Magika	pebin
Reporter	abuse_ch
Tags:	exe QuasarRAT RAT

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

upx.exe

Verdict:

Malicious activity

Analysis date:

2025-07-19 20:01:56 UTC

Tags:

uac

Link:

https://app.any.run/tasks/85b4559b-8c1b-4fef-93ef-4fb071eb94f7

Note:

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

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/15929/

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=687d062d2f623871a5f0a2bc

Tags:

vmdetect quasar emotet

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

Connection attempt to an infection source

Sending a custom TCP request

Query of malicious DNS domain

Verdict:

Malicious

Labled as:

IL:Trojan.MSILZilla

Link:

https://www.hybrid-analysis.com/sample/5f2b5c871d9def423830873e376abeba49846bcd8cd8706e7eb02e3306ae85b2

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/552ac9a6-3037-414b-bf66-52fe2dd519bf

Result

Threat name:

Quasar

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1740507

Signature

.NET source code contains potential unpacker

Antivirus / Scanner detection for submitted sample

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

Found malware configuration

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

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Sample uses string decryption to hide its real strings

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

Yara detected Quasar RAT

Behaviour

Behavior Graph:

Download SVG

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/5f2b5c871d9def423830873e376abeba49846bcd8cd8706e7eb02e3306ae85b2

Verdict:

QuasarRat

YARA:

15 match(es)

Tags:

.Net Executable Fody/Costura Packer Html Malicious PDB Path PE (Portable Executable) QuasarRat RAT SOS: 0.14 SOS: 0.15 SOS: 0.18 SOS: 0.19 SOS: 0.20 SOS: 0.22 SOS: 0.23 SOS: 0.24 SOS: 0.25 SOS: 0.26 SOS: 0.27 SOS: 0.29 SOS: 0.32 SOS: 0.34 SOS: 0.35 SOS: 0.61 Win 32 Exe x86

Link:

https://app.malva.re/file/47f7bc9ac7d7c93420777b21ad510895

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/5f2b5c871d9def423830873e376abeba49846bcd8cd8706e7eb02e3306ae85b2/

Verdict:

Malicious

Threat:

Trojan.Msil/Bank

Link:

https://tip.neiki.dev/file/5f2b5c871d9def423830873e376abeba49846bcd8cd8706e7eb02e3306ae85b2

Threat name:

ByteCode-MSIL.Hacktool.Aikaantivm

Status:

Malicious

First seen:

2025-07-19 20:01:57 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

22 of 23 (95.65%)

Threat level:

1/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=l4vvzby5txxueobqq47do2v6xjeyi26nrtmha3t6waxdgbvoqwza._file

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar botnet:tobi spyware trojan

Link:

https://tria.ge/reports/250720-shgy7s1kt4/

Behaviour

Suspicious behavior: AddClipboardFormatListener

Suspicious use of AdjustPrivilegeToken

Quasar RAT

Quasar family

Quasar payload

Malware Config

C2 Extraction:

page-prostores.gl.at.ply.gg:12090

Verdict:

Malicious

Tags:

red_team_tool rat quasar_rat backdoor backnet Win.Malware.Generic-9883083-0

YARA:

HKTL_EXE_AlKhaser_Jul_01 MAL_QuasarRAT_May19_1 malware_windows_quasarrat MAL_BackNet_Nov18_1

Link:

https://app.threat.zone/submission/a589a635-d0dc-4ae3-9617-854f69c58406

Unpacked files

SH256 hash:

5f2b5c871d9def423830873e376abeba49846bcd8cd8706e7eb02e3306ae85b2

MD5 hash:

47f7bc9ac7d7c93420777b21ad510895

SHA1 hash:

888a9eefb742bdf3fb5e76f0cff5dee9cac44f45

Detections:

QuasarRAT

Link:

https://www.unpac.me/results/3e8e6a26-11f4-425c-8f53-bb49ace1b6b8/

SH256 hash:

d5235265564f0bfd23b7279d7bdccc9ea6383ed07c5d0bfdf6c99029af9a2c0c

MD5 hash:

1d3dd9fcc077e6b4f88c05b9aef53ee6

SHA1 hash:

12b33858bc84f54b8aa8dbcb5a0ec2da043a6f66

Link:

https://www.unpac.me/results/3e8e6a26-11f4-425c-8f53-bb49ace1b6b8/

SH256 hash:

4c9615496970ea84320e2a6e99f8fb828e3c7790384df5585d93fc368885d94e

MD5 hash:

50e6524b7ee9c2c93f5210b63cb1ca54

SHA1 hash:

3e296ec3bb24750833ea80515e6fb4c73874c91a

Link:

https://www.unpac.me/results/3e8e6a26-11f4-425c-8f53-bb49ace1b6b8/

SH256 hash:

e54b3f90f18efaba3b4e714533d5e1f0aaf2f656b9166d6498e15b659cc41b8c

MD5 hash:

4a3c2b2b73407e79a9ebc6caece6c144

SHA1 hash:

70f64ab70fdc0c484da6f914d2742115c7a97141

Detections:

SUSP_NET_Large_Static_Array_In_Small_File_Jan24

HKTL_NET_GUID_Quasar

Link:

https://www.unpac.me/results/3e8e6a26-11f4-425c-8f53-bb49ace1b6b8/

Parent samples :
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SH256 hash:

ceed689891874eed41295189b2db3c187aabcfc90add5a1d2af96f078bcb4811

MD5 hash:

026a5bafe4ac686c01e9d56e00a87ab1

SHA1 hash:

a6ff2228e8114a2b4040d0ca137c4b544ff034f4

Link:

https://www.unpac.me/results/3e8e6a26-11f4-425c-8f53-bb49ace1b6b8/

SH256 hash:

5012d7cab74e4d5bd9fdd298d05ae5d51442e66d426e5859beb9a513ad1acae4

MD5 hash:

79331ea5a83291a3f45014f126c5176f

SHA1 hash:

d60daf9acaacbeb3def349c76f236df1460a4797

Link:

https://www.unpac.me/results/3e8e6a26-11f4-425c-8f53-bb49ace1b6b8/

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/5f2b5c871d9def423830873e376abeba49846bcd8cd8706e7eb02e3306ae85b2

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:	Check_Dlls Create hunting rule

Rule name:	Costura_Protobuf Create hunting rule
Author:	@bartblaze
Description:	Identifies Costura and Protobuf in .NET assemblies, respectively for storing resources and (de)serialization. Seen together might indicate a suspect binary.

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

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

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

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:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

Rule name:	INDICATOR_EXE_Packed_Fody Create hunting rule
Author:	ditekSHen
Description:	Detects executables manipulated with Fody

Rule name:	Indicator_MiniDumpWriteDump Create hunting rule
Author:	Obscurity Labs LLC
Description:	Detects PE files and PowerShell scripts that use MiniDumpWriteDump either through direct imports or string references

Rule name:	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA Create hunting rule
Author:	ditekSHen
Description:	Detects Windows executables referencing non-Windows User-Agents

Rule name:	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL Create hunting rule
Author:	ditekSHen
Description:	Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

Rule name:	MAL_BackNet_Nov18_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects BackNet samples
Reference:	https://github.com/valsov/BackNet

Rule name:	MAL_BackNet_Nov18_1_RID2D6D Create hunting rule
Author:	Florian Roth
Description:	Detects BackNet samples
Reference:	https://github.com/valsov/BackNet

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:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

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:	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)

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/15929/

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 (GUARD_CF)	high

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