MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 101786e62aeb6f62129bb39ea1b58cc587de9483a2409a1c95a61a32aa202627. 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 21 File information Comments

SHA256 hash:	101786e62aeb6f62129bb39ea1b58cc587de9483a2409a1c95a61a32aa202627
SHA3-384 hash:	63c6fa75ca21cd930860aa1df36aab8628b16b045bd271044c46c5105e6d8e6fdc37513b9d83720439841de0d63cf32c
SHA1 hash:	a0b759725f01dbfeb2c0efac14729e6d806eedad
MD5 hash:	e98618369739a06a533af5131bf2e472
humanhash:	papa-wolfram-colorado-mockingbird
File name:	ntoskrnl.exe
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	1'623'552 bytes
First seen:	2025-04-24 23:28:08 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	24576:p1HzMFIgS2eWBRwRR16zhHIPbcNK0KKm77yviUSQaZaOwI55l2S62r9lsaq/fHHz:pdMj7wR2EgKKm77LrwCB6Apq/f
Threatray	11 similar samples on MalwareBazaar
TLSH	T17C75F111B3F98116E9BF1BB8A8B359490B37F5039A3ACB5F498C485D1EE33409E51B63
TrID	58.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 13.2% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 8.4% (.EXE) Win64 Executable (generic) (10522/11/4) 5.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.0% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika	pebin
Reporter	thedudefello
Tags:	exe QuasarRAT

Intelligence

File Origin

# of uploads :

# of downloads :

626

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

ntoskrnl.exe

Verdict:

Malicious activity

Analysis date:

2025-04-24 23:16:58 UTC

Tags:

crypto-regex

Link:

https://app.any.run/tasks/ee080d8b-2555-4d0a-8b97-64a41b336a93

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/3943/

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=680acc3aa37ff28e12996940

Tags:

vmdetect autorun quasar

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

Creating a file in the %AppData% subdirectories

Launching a process

Enabling autorun by creating a file

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm anti-vm backnet cmd cscript entropy explorer fingerprint hacktool lolbin mshta netsh obfuscated packed packed packer_detected quasarrat rat reconnaissance remote runonce schtasks update

Link:

https://www.filescan.io/uploads/680ac915833df795debc7410/reports/3cb4686e-49ee-4edb-b8cd-12712f43703c/overview

Verdict:

Malicious

Labled as:

IL:Trojan.MSILZilla

Link:

https://www.hybrid-analysis.com/sample/101786e62aeb6f62129bb39ea1b58cc587de9483a2409a1c95a61a32aa202627

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/f83b4dc3-805c-4b15-abb9-b3d4bbca5746

Result

Threat name:

AsyncRAT, Quasar

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1673696

Signature

.NET source code contains potential unpacker

Contains functionality to capture screen (.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 dropped file

Multi AV Scanner detection for submitted file

Sample uses string decryption to hide its real strings

Sigma detected: System File Execution Location Anomaly

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 AsyncRAT

Yara detected Quasar RAT

Behaviour

Behavior Graph:

Download SVG

Score:

96%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/101786e62aeb6f62129bb39ea1b58cc587de9483a2409a1c95a61a32aa202627

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/101786e62aeb6f62129bb39ea1b58cc587de9483a2409a1c95a61a32aa202627/

Threat name:

ByteCode-MSIL.Hacktool.Aikaantivm

Status:

Malicious

First seen:

2025-04-24 23:28:23 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

23 of 24 (95.83%)

Threat level:

1/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=calynzrk5nxweeu3wopkdnmmywd55fedujajuhevuyndfkraeytq._file

Verdict:

malicious

Label(s):

quasarrat

QuasarRAT

197ebb16ffd123604a2f960d4bd32d7e2756253ac728a218b18ef42857fe9d95

QuasarRAT

3045c4c630d44383a7153d9d13e4cdaa3284095cb580627a9adb0b9e4033d9e3

QuasarRAT

4a6389fb42a4918ca6b7aec6c86a4e945f85dfb6490f873f9be24fa5c7f9df06

QuasarRAT

9299eddf62904e0b0c32dca0aa811bd686b3d2a0f3c942617b2c5f9c725e110c

QuasarRAT

error

QuasarRAT

+ 1 additional samples on MalwareBazaar

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar botnet:scaner spyware trojan

Link:

https://tria.ge/reports/250424-3f585awyds/

Behaviour

Modifies system certificate store

Scheduled Task/Job: Scheduled Task

Suspicious behavior: AddClipboardFormatListener

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Executes dropped EXE

Quasar RAT

Quasar family

Quasar payload

Malware Config

C2 Extraction:

193.151.108.40:6666

Verdict:

Malicious

Tags:

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

YARA:

HKTL_EXE_AlKhaser_Jul_01 MAL_BackNet_Nov18_1 malware_windows_quasarrat MAL_QuasarRAT_May19_1

Link:

https://app.threat.zone/submission/d4a459c5-b544-4f06-9502-185bd99a5a62

Unpacked files

SH256 hash:

101786e62aeb6f62129bb39ea1b58cc587de9483a2409a1c95a61a32aa202627

MD5 hash:

e98618369739a06a533af5131bf2e472

SHA1 hash:

a0b759725f01dbfeb2c0efac14729e6d806eedad

Detections:

QuasarRAT

Link:

https://www.unpac.me/results/b7a61a4a-83f2-4859-89af-43622f28549d/

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/101786e62aeb6f62129bb39ea1b58cc587de9483a2409a1c95a61a32aa202627

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

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

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_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/3943/

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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