MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6d41b3409dbdabdc5109f72b190e2a54ed82b2cbb15951ac077343b2b0e81241. 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

AsyncRAT

Vendor detections: 17

Intelligence 17 IOCs YARA 22 File information Comments

SHA256 hash:	6d41b3409dbdabdc5109f72b190e2a54ed82b2cbb15951ac077343b2b0e81241
SHA3-384 hash:	0734dff3ec5be0c67a30ccfab6b52fbe76f035dfed3d3f450cd14684e2629f49f0065d18699874c8916aa3039c20e9fd
SHA1 hash:	6118b8566dcdf3f7e6449c0c3d6b57cd2dfbb857
MD5 hash:	a616100b5133f2fa8af2883d314350c7
humanhash:	mexico-victor-alaska-missouri
File name:	17334905521d597933f8aaddb97573b46d117b288a865f8a218fac0e15588edac3edcab35b588.dat-decoded
Download:	download sample
Signature	AsyncRAT Create hunting rule
File size:	78'336 bytes
First seen:	2024-12-06 13:09:14 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	768:D4fOLRhTQPG1d5NnCMI0boPaVr572GAKQCwz4WogiTBi7cnAGEaDD9GLQ5BmqPKh:D4qpHOaSaVr55/i7KAGXD0afKlLJt
TLSH	T1D7734B087FABC526D1AD9A7989E113450375E3177243DB4F2CC8039A4F23BC79F916AA
TrID	67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 9.7% (.EXE) Win64 Executable (generic) (10522/11/4) 6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika	pebin
Reporter	abuse_ch
Tags:	AsyncRAT base64-decoded exe

abuse_ch

Malware dropped as base64 encoded payload

Intelligence

File Origin

# of uploads :

# of downloads :

406

Origin country :

Vendor Threat Intelligence

Malware family:

asyncrat

ID:

File name:

17334905521d597933f8aaddb97573b46d117b288a865f8a218fac0e15588edac3edcab35b588.dat-decoded

Verdict:

Malicious activity

Analysis date:

2024-12-06 13:17:21 UTC

Tags:

netreactor asyncrat

Link:

https://app.any.run/tasks/6c32ac09-b5df-4b46-a15f-68252241fea3

Note:

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

Detection(s):

SecuriteInfo.com.BackDoor.AsyncRATNET.1.28336.20163.UNOFFICIAL

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6752f7bb03fccedbc64977cd

Tags:

asyncrat crysan

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Сreating synchronization primitives

Connection attempt to an infection source

Sending a TCP request to an infection source

Query of malicious DNS domain

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

adaptive-context anti-vm asyncrat net_reactor obfuscated overlay packed packed smartassembly smart_assembly vbnet

Link:

https://www.filescan.io/uploads/6752f7ba65dd3844b889a36d/reports/befa87b4-9d49-4a5f-84f3-b13e7f7311a8/overview

Verdict:

Malicious

Labled as:

Lazy.Generic

Link:

https://www.hybrid-analysis.com/sample/6d41b3409dbdabdc5109f72b190e2a54ed82b2cbb15951ac077343b2b0e81241

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.

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/975e5a36-0c27-4493-a39e-d923a305812f

Result

Threat name:

AsyncRAT, PureLog Stealer

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1570014

Signature

.NET source code contains method to dynamically call methods (often used by packers)

.NET source code contains potential unpacker

AI detected suspicious sample

Antivirus / Scanner detection for submitted sample

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Found malware configuration

Machine Learning detection for sample

Multi AV Scanner detection for submitted file

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

Uses dynamic DNS services

Yara detected AsyncRAT

Yara detected PureLog Stealer

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/6d41b3409dbdabdc5109f72b190e2a54ed82b2cbb15951ac077343b2b0e81241

Detection:

asyncrat

Link:

https://mwdb.cert.pl/sample/6d41b3409dbdabdc5109f72b190e2a54ed82b2cbb15951ac077343b2b0e81241/

Threat name:

ByteCode-MSIL.Spyware.AsyncRAT

Status:

Malicious

First seen:

2024-11-06 22:16:00 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

29 of 38 (76.32%)

Threat level:

2/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=nva3gqe5xwv5yuij64vrsdrkktwyfmwlwfmvdlahonb3fmhicjaq._file

Verdict:

malicious

Label(s):

asyncrat

Similar samples:

error

AsyncRAT

Result

Malware family:

n/a

Score:

3/10

Tags:

n/a

Link:

https://tria.ge/reports/241206-qec5qsyncv/

Behaviour

Suspicious use of AdjustPrivilegeToken

Verdict:

Malicious

Tags:

rat asyncrat

YARA:

malware_asyncrat asyncrat AsyncRat_Payload JPCERTCC_Asyncrat Windows_Generic_Threat_ce98c4bc

Link:

https://app.threat.zone/submission/b6ab33ce-32e4-431b-9266-713e1d1f629a

Unpacked files

SH256 hash:

ca1ae12ebc8f7e455c88b32a15584b2f0288b70ab55bce92fedc12097175ac7b

MD5 hash:

8fedc40edd6c61f05b12915fb67cf62c

SHA1 hash:

10527a4dac1f9af707f4170191bc682c6d6ad3c9

Detections:

INDICATOR_EXE_Packed_SmartAssembly

Link:

https://www.unpac.me/results/7d87e24a-6f8b-4209-96f4-971636e5a330/

Parent samples :
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SH256 hash:

6d41b3409dbdabdc5109f72b190e2a54ed82b2cbb15951ac077343b2b0e81241

MD5 hash:

a616100b5133f2fa8af2883d314350c7

SHA1 hash:

6118b8566dcdf3f7e6449c0c3d6b57cd2dfbb857

Detections:

win_asyncrat_w0

Link:

https://www.unpac.me/results/7d87e24a-6f8b-4209-96f4-971636e5a330/

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/6d41b3409dbdabdc5109f72b190e2a54ed82b2cbb15951ac077343b2b0e81241

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:	AgentTesla Create hunting rule
Author:	Harish Kumar P
Description:	Yara Rule to Detect AgentTesla

Rule name:	AsyncRat Create hunting rule
Author:	kevoreilly, JPCERT/CC Incident Response Group
Description:	AsyncRat Payload

Rule name:	asyncrat Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect AsyncRat in memory
Reference:	internal research

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

Rule name:	DotNet_Reactor Create hunting rule
Author:	@bartblaze
Description:	Identifies .NET Reactor, which offers .NET code protection such as obfuscation, encryption and so on.

Rule name:	INDICATOR_EXE_Packed_SmartAssembly Create hunting rule
Author:	ditekSHen
Description:	Detects executables packed with SmartAssembly

Rule name:	malware_asyncrat Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect AsyncRat in memory
Reference:	internal research

Rule name:	malware_asyncrat Create hunting rule
Description:	detect AsyncRat in memory
Reference:	https://github.com/NYAN-x-CAT/AsyncRAT-C-Sharp

Rule name:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

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:	PureCrypter Create hunting rule
Author:	@bartblaze
Description:	Identifies PureCrypter, .NET loader and obfuscator.
Reference:	https://malpedia.caad.fkie.fraunhofer.de/details/win.purecrypter

Rule name:	RansomPyShield_Antiransomware Create hunting rule
Author:	XiAnzheng
Description:	Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP)

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

Rule name:	SUSP_DOTNET_PE_List_AV Create hunting rule
Author:	SECUINFRA Falcon Team
Description:	Detecs .NET Binary that lists installed AVs

Rule name:	Windows_Generic_Threat_ce98c4bc Create hunting rule
Author:	Elastic Security

Rule name:	win_asyncrat_w0 Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect AsyncRat in memory
Reference:	internal research

File information

The table below shows additional information about this malware sample such as delivery method and external references.

1d597933f8aaddb97573b46d117b288a865f8a218fac0e15588edac3edcab35b

AsyncRAT

exe 6d41b3409dbdabdc5109f72b190e2a54ed82b2cbb15951ac077343b2b0e81241

(this sample)

Dropped by

SHA256 1d597933f8aaddb97573b46d117b288a865f8a218fac0e15588edac3edcab35b

Dropped by

MD5 c6966d2e80aebdc3a0849a07f9e01456

URLhaus

https://urlhaus.abuse.ch/url/3333239/

Delivery method

Distributed via web download

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

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