MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2c9a9dad74ed9892e2d73dc8a1bbfcdd46d6d9d54a4625a803842d734a5a8ec2. 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:	2c9a9dad74ed9892e2d73dc8a1bbfcdd46d6d9d54a4625a803842d734a5a8ec2
SHA3-384 hash:	62dafc8a35e3ca3705523affe84e4d44837cd0c9b83cd2d217aad039570134eb886d258b17f392111b65cd5d7b041043
SHA1 hash:	1435a7c8df54f855ad43d6074c77bb4033459de8
MD5 hash:	a64c435405ce85d59fec18b82900ec0e
humanhash:	beryllium-xray-butter-maryland
File name:	SilkRoblox2FABypass.exe
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	1'951'232 bytes
First seen:	2025-07-07 13:15:59 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep	49152:B2WEf7rRFirm+Nn42KK8i7Ltwa+VVaSzm:B2WEHavNnoK8i7LtwbHJz
Threatray	91 similar samples on MalwareBazaar
TLSH	T1F9950110B3F58146F1FF5BB8A4B758450B77BA03AA36C75F5988A09D1EA3740CE913A3
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:

SilkRoblox2FABypass.exe

Verdict:

Malicious activity

Analysis date:

2025-07-06 18:10:29 UTC

Tags:

auto-reg crypto-regex

Link:

https://app.any.run/tasks/0685afdb-9668-4096-b5f3-0df917481c71

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/12674/

Detection(s):

Win.Malware.Generic-9883083-0

Win.Malware.Bulz-9933026-0

ditekSHen.MALWARE.Win.Trojan.QuasarStealer.UNOFFICIAL

Win.Malware.Generic-6623004-0

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=686abc14c9eb9747376724c8

Tags:

vmdetect autorun quasar

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

anti-vm anti-vm base64 cmd explorer fingerprint hacktool lolbin lolbin obfuscated packed packed packer_detected quasarrat reconnaissance remote runonce update

Link:

https://www.filescan.io/uploads/686bc8a361f15fb42a3343d8/reports/b4af5618-21a8-444c-ae63-852268a57c9d/overview

Verdict:

Malicious

Labled as:

IL:Trojan.MSILZilla

Link:

https://www.hybrid-analysis.com/sample/2c9a9dad74ed9892e2d73dc8a1bbfcdd46d6d9d54a4625a803842d734a5a8ec2

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/67020b4c-129f-4ef3-844c-583084fb2481

Result

Threat name:

Quasar

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1730093

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)

Joe Sandbox ML detected suspicious sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Sample uses string decryption to hide its real strings

Sigma detected: Schedule system process

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 Quasar RAT

Behaviour

Behavior Graph:

Download SVG

Score:

92%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/2c9a9dad74ed9892e2d73dc8a1bbfcdd46d6d9d54a4625a803842d734a5a8ec2

Verdict:

QuasarRat

YARA:

15 match(es)

Tags:

.Net Executable Fody/Costura Packer Html Malicious PE (Portable Executable) QuasarRat RAT SOS: 0.00 SOS: 0.01 SOS: 0.02 SOS: 0.03 SOS: 0.04 SOS: 0.06 SOS: 0.07 SOS: 0.13 SOS: 0.40 Win 32 Exe x86

Link:

https://app.malva.re/file/a64c435405ce85d59fec18b82900ec0e

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/2c9a9dad74ed9892e2d73dc8a1bbfcdd46d6d9d54a4625a803842d734a5a8ec2/

Threat name:

ByteCode-MSIL.Hacktool.Aikaantivm

Status:

Malicious

First seen:

2025-07-06 18:10:30 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

23 of 24 (95.83%)

Threat level:

1/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=fsnj3llu5wmjfywxhxekdo743vdnnwovjjdclkadqqwxgss2r3ba._file

Verdict:

malicious

Label(s):

quasarrat

QuasarRAT

4a5598e056a1f35b8638a606f9870ad2f05f00bd38076e5cf66fc99cb6309b19

QuasarRAT

5f6d769cabe8e26a8a724fc7f014daa606682b8c6745e83d4639b410be068571

QuasarRAT

896dd6fb0a61655177ecd82a93a507c5d127b7e81e41568ecdf59b1f523b1cbc

QuasarRAT

c598101df884baa2a9db9162b00fe4ab7adf469ae87d764e6d8b210fe095e565

QuasarRAT

e7078c1080db9dafe06ac8258d4d685cbdef80ab0363ac7438dcef8c3bf554b1

QuasarRAT

error

QuasarRAT

f77b3185ad4e077ae287db26431fd4e6ed04b484fd9432c2b5fefe482ee09259

QuasarRAT

+ 81 additional samples on MalwareBazaar

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar botnet:2fa bypass roblox execution persistence spyware trojan

Link:

https://tria.ge/reports/250707-qhywlsaq6y/

Behaviour

Scheduled Task/Job: Scheduled Task

Suspicious behavior: AddClipboardFormatListener

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Quasar RAT

Quasar family

Quasar payload

Malware Config

C2 Extraction:

149.22.227.64:1111

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/83373094-9a34-4d9f-9936-396a76aa11e7

Unpacked files

SH256 hash:

2c9a9dad74ed9892e2d73dc8a1bbfcdd46d6d9d54a4625a803842d734a5a8ec2

MD5 hash:

a64c435405ce85d59fec18b82900ec0e

SHA1 hash:

1435a7c8df54f855ad43d6074c77bb4033459de8

Detections:

QuasarRAT

Link:

https://www.unpac.me/results/31132b61-5d65-46db-bd86-4f7137f66312/

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/2c9a9dad74ed9892e2d73dc8a1bbfcdd46d6d9d54a4625a803842d734a5a8ec2

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/12674/

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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