MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 337de3ec21865f342e56f5c6f1a831533050ccb46fe717b620b708853577b549. 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: 14

Intelligence 14 IOCs YARA 30 File information Comments

SHA256 hash:	337de3ec21865f342e56f5c6f1a831533050ccb46fe717b620b708853577b549
SHA3-384 hash:	270e898d2b446191f5b5071e3c0d792612c3e4350c80831122182502eb816755ebb7e0fc3452cf4c36c1b5fceef45566
SHA1 hash:	f7295ca5c571149cacdf98d7052198724b80954a
MD5 hash:	a42f1aeb34c476ac2625636f22bd28c8
humanhash:	mississippi-kentucky-delaware-one
File name:	SecuriteInfo.com.Win32.MalwareX-gen.1327.2894
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	3'942'400 bytes
First seen:	2025-06-27 04:27:48 UTC
Last seen:	2025-06-27 05:22:36 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'751 x AgentTesla, 19'657 x Formbook, 12'248 x SnakeKeylogger)
ssdeep	98304:nad4rgrQNzzl05dvSKwEm8Ozfn2DQD1h:na2rgrCvq5dKEHo/2D2
TLSH	T13F0623997260F5AEC807C071DE745CF8AB602CB7531F5D13A51B3299AAAD93ECE340E1
TrID	28.5% (.EXE) Win64 Executable (generic) (10522/11/4) 17.8% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 13.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 12.2% (.EXE) Win32 Executable (generic) (4504/4/1) 5.6% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika	pebin
dhash icon	71cc8e9ca48cd8e1 (3 x QuasarRAT)
Reporter	SecuriteInfoCom
Tags:	exe QuasarRAT

Intelligence

File Origin

# of uploads :

# of downloads :

579

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

SecuriteInfo.com.Win32.MalwareX-gen.1327.2894

Verdict:

Malicious activity

Analysis date:

2025-06-27 04:28:53 UTC

Tags:

auto-reg crypto-regex confuser

Link:

https://app.any.run/tasks/18e92d32-9412-4eca-8292-2010d16aa682

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/11292/

Detection(s):

SecuriteInfo.com.Win32.MalwareX-gen.1327.2894.UNOFFICIAL

PUA.Win.Packed.ConfuserEx-6582917-0

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=685e1e1132ed47a3a8d7be82

Tags:

autorun packed sage msil

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Unauthorized injection to a recently created process

Restart of the analyzed sample

Creating a file

Searching for synchronization primitives

Launching the default Windows debugger (dwwin.exe)

Creating a window

Сreating synchronization primitives

Creating a file in the %AppData% subdirectories

Launching a process

Enabling autorun by creating a file

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

base64 confuser confuserex explorer lolbin net obfuscated obfuscated packed packed packer_detected

Link:

https://www.filescan.io/uploads/685e1dd9c4a908e875dc1af4/reports/83b979e6-2485-4615-aca4-e749086afd95/overview

Verdict:

Malicious

Labled as:

MSILHeracles.Generic

Link:

https://www.hybrid-analysis.com/sample/337de3ec21865f342e56f5c6f1a831533050ccb46fe717b620b708853577b549

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/c8a29e3a-de12-4b2c-82b3-b7367b502804

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/337de3ec21865f342e56f5c6f1a831533050ccb46fe717b620b708853577b549

Verdict:

inconclusive

YARA:

7 match(es)

Tags:

Executable PE (Portable Executable) Win 32 Exe x86

Link:

https://app.malva.re/file/a42f1aeb34c476ac2625636f22bd28c8

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/337de3ec21865f342e56f5c6f1a831533050ccb46fe717b620b708853577b549/

Verdict:

Malicious

Link:

https://tip.neiki.dev/file/337de3ec21865f342e56f5c6f1a831533050ccb46fe717b620b708853577b549

Threat name:

Win32.Backdoor.Quasar

Status:

Malicious

First seen:

2025-06-27 03:38:26 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

22 of 24 (91.67%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=gn66h3bbqzptilsw6xdpdkbrkmyfbtfun7trpnraw4eiknlxwveq._file

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar botnet:office03 discovery spyware trojan

Link:

https://tria.ge/reports/250627-e4cdysvsdv/

Behaviour

Scheduled Task/Job: Scheduled Task

Suspicious behavior: AddClipboardFormatListener

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Program crash

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Executes dropped EXE

Quasar RAT

Quasar family

Quasar payload

Malware Config

C2 Extraction:

mjoatboating.ydns.eu:4787

Verdict:

Informative

Tags:

red_team_tool

YARA:

SUSP_NET_NAME_ConfuserEx

Link:

https://app.threat.zone/submission/f6960246-cc7c-43eb-b33f-c8cd479397cd

Unpacked files

SH256 hash:

337de3ec21865f342e56f5c6f1a831533050ccb46fe717b620b708853577b549

MD5 hash:

a42f1aeb34c476ac2625636f22bd28c8

SHA1 hash:

f7295ca5c571149cacdf98d7052198724b80954a

Link:

https://www.unpac.me/results/f6a09815-fb4c-4558-9992-a44d5e88482e/

SH256 hash:

c1f0d0acb4a7502481260a988d37d33a7a3f6c038ac63ecce0c3e2eef6004e16

MD5 hash:

69943cd4e7139b49276a1295aeb700e7

SHA1 hash:

8661ae54df562e3e82f2242f6c24c398e9a7ed95

Detections:

QuasarRAT

cn_utf8_windows_terminal

malware_windows_xrat_quasarrat

MAL_QuasarRAT_May19_1

MAL_BackNet_Nov18_1

INDICATOR_EXE_Packed_Fody

INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL

INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Link:

https://www.unpac.me/results/f6a09815-fb4c-4558-9992-a44d5e88482e/

Parent samples :

337de3ec21865f342e56f5c6f1a831533050ccb46fe717b620b708853577b549
19575aa4bd61808dfe0ff0b2428cbd9e91ec74e49978f1ed7b95039f454b5d71
72408c6e85f34e8002d8e0439afef5823a5e6f45ef2cec0b6f8457365d56120c

SH256 hash:

b609419d89f859bd9ef2c7fdb9cc70b15df07de162a3ffd62470804fea755d7b

MD5 hash:

a4d53302396d2e810c5fd71a8f57aa73

SHA1 hash:

a1e1f0189d7885ef115b21883332865e9a773eb6

Detections:

SUSP_NET_NAME_ConfuserEx

INDICATOR_EXE_Packed_ConfuserEx

INDICATOR_EXE_Packed_ConfuserEx_Custom

Link:

https://www.unpac.me/results/f6a09815-fb4c-4558-9992-a44d5e88482e/

SH256 hash:

e2feacbe1cdbb4d397f497991ed42a633055a8d0a621bedd22336c057cf1131b

MD5 hash:

1c6ef309e5e6ca6fa2239fda11a65051

SHA1 hash:

eb0ff056abcaf932b235c2f92f1798b6669f38ff

Link:

https://www.unpac.me/results/f6a09815-fb4c-4558-9992-a44d5e88482e/

SH256 hash:

60ca1574d0c916d1f5686bcf871488710a2677a68c94f65a2be47d707976c061

MD5 hash:

d8c04d4e36632b4d5fb0ffab446877ed

SHA1 hash:

6092ad4043c572c8a5616f8a1b343aa94bca25a3

Detections:

SUSP_NET_Large_Static_Array_In_Small_File_Jan24

HKTL_NET_GUID_Quasar

Link:

https://www.unpac.me/results/f6a09815-fb4c-4558-9992-a44d5e88482e/

Parent samples :
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Malware family:

QuasarRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/337de3ec2186/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/337de3ec21865f342e56f5c6f1a831533050ccb46fe717b620b708853577b549

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:	INDICATOR_EXE_Packed_ConfuserEx Create hunting rule
Author:	ditekSHen
Description:	Detects executables packed with ConfuserEx Mod

Rule name:	INDICATOR_EXE_Packed_ConfuserEx_Custom Create hunting rule
Author:	ditekSHen
Description:	Detects executables packed with ConfuserEx Custom; outside of GIT

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_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/11292/

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