MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 41b315e70843bdcd5a9cc1b8c8f86ddd1fd11c7423ec3842d689515743900240. 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 19 File information Comments

SHA256 hash:	41b315e70843bdcd5a9cc1b8c8f86ddd1fd11c7423ec3842d689515743900240
SHA3-384 hash:	6f45abb659e2429f971165ef0bd49ea5d69849e53f206d5b34537d49479492c26fcda5c149744c46b8811e283d90c510
SHA1 hash:	17bc2635d50b16539ed986cdf9ea23c1ffee84af
MD5 hash:	9c33312023037939a8a67002fffddf0d
humanhash:	eight-enemy-beer-six
File name:	41B315E70843BDCD5A9CC1B8C8F86DDD1FD11C7423EC3.exe
Download:	download sample
Signature	AsyncRAT Create hunting rule
File size:	2'468'616 bytes
First seen:	2024-05-24 22:30:18 UTC
Last seen:	2024-07-24 20:24:16 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep	49152:W14OLsJ1eADGF2IuDSPyyvfJrbVp/eDfAdfouytdGc:7OLsDe/F2IuDSqyZr5p/3f9SN
TLSH	T178B5228A73898B60E99D7F3B84E8171543F5FDD2E68ED30A3C4438A50D3B7976894A43
TrID	67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 9.7% (.EXE) Win64 Executable (generic) (10523/12/4) 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)
File icon (PE):
dhash icon	f08c96b2b29e8cf0 (1 x AsyncRAT)
Reporter	abuse_ch
Tags:	AsyncRAT exe RAT

abuse_ch

AsyncRAT C2:
191.88.248.178:3008

Intelligence

File Origin

# of uploads :

# of downloads :

366

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

https://emails.gremio.com.co/c/2j55/ibxuev4y/4evrvmpaxka

Verdict:

No threats detected

Analysis date:

2024-04-10 16:44:37 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/7f47385f-c1b1-495e-ab73-3740ea6b913d

Note:

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

Detection(s):

Win.Packed.Msilheracles-10017859-0

Verdict:

Malicious

Score:

90.2%

Link:

https://cyber-fortress.com/docs/result/index.php?id=665115d1a8a296404f97aa5fwin7simulatehigh_evasion

Tags:

Encryption Static Malware

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a file in the %AppData% directory

Launching a process

Creating a process with a hidden window

Creating a file

Сreating synchronization primitives

DNS request

Connection attempt

Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch

Unauthorized injection to a system process

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

overlay packed packed smartassembly smart_assembly

Link:

https://www.filescan.io/uploads/6651152732eca5b280fd6b8e/reports/12e1649d-3ae1-41ea-bd8e-c2314af1b179/overview

Verdict:

Malicious

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/41b315e70843bdcd5a9cc1b8c8f86ddd1fd11c7423ec3842d689515743900240

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.

Malware family:

Generic Malware

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/b65b52e8-bdd1-459b-a0f5-f7dafa518799

Result

Threat name:

AsyncRAT, PureLog Stealer

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1447417

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 dropped file

Machine Learning detection for dropped file

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Snort IDS alert for network traffic

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

Uses dynamic DNS services

Yara detected AntiVM3

Yara detected AsyncRAT

Yara detected Costura Assembly Loader

Yara detected PureLog Stealer

Behaviour

Behavior Graph:

Download SVG

Score:

91%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/41b315e70843bdcd5a9cc1b8c8f86ddd1fd11c7423ec3842d689515743900240

Detection:

asyncrat

Link:

https://mwdb.cert.pl/sample/41b315e70843bdcd5a9cc1b8c8f86ddd1fd11c7423ec3842d689515743900240/

Threat name:

Win32.Backdoor.AsyncRAT

Status:

Malicious

First seen:

2024-04-10 22:10:25 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

22 of 38 (57.89%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=igzrlzyiio642wu4yg4mr6dn3up5chduepwdqqwwrfivoq4qajaa._file

Verdict:

malicious

Result

Malware family:

n/a

Score:

6/10

Tags:

persistence

Link:

https://tria.ge/reports/240524-2fc2xadd3v/

Behaviour

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Adds Run key to start application

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/19e4fb21-0a5a-46a6-8c79-0df58d5d3158

Unpacked files

SH256 hash:

9f177b7ed972178568d1a0ba0aeb2e09ffb74a2ffa123881206c5f2641aba41f

MD5 hash:

54a10a94498a765eb7d86f5c2ffdbd7a

SHA1 hash:

e14ca3ac657221263259b015aa1a14d3e413adb6

Detections:

win_asyncrat_w0

INDICATOR_EXE_Packed_SmartAssembly

asyncrat

Link:

https://www.unpac.me/results/7dd1dd88-4cf4-433a-9c29-7be31b1a7fb4/

SH256 hash:

d79abb617e57af724a412cf91fdcef9e8686ee7a3fb000846a31ea1f281e81b2

MD5 hash:

7548dc18e58a4f6829047dd74384a53f

SHA1 hash:

4ebd870589c1a97ef822e7da6fafaaa34ed8dff4

Link:

https://www.unpac.me/results/7dd1dd88-4cf4-433a-9c29-7be31b1a7fb4/

SH256 hash:

19efdf03cb94895935225795f68bb9abfded1869687367013b8b4eee3cc99372

MD5 hash:

4e29f75c0c51b9dec76955f0382d9541

SHA1 hash:

4899aa8e3f57339cbaec8faab777897a76fe1c3a

Link:

https://www.unpac.me/results/7dd1dd88-4cf4-433a-9c29-7be31b1a7fb4/

SH256 hash:

78f73e1734daa918b253517c75971fbb8df773a3d77d02a752e9a0ad1711a677

MD5 hash:

f9d2985aa1c41cca281321fffb5ed424

SHA1 hash:

3a7a58d2dcae2762882357ae34d372744b1dbb9d

Link:

https://www.unpac.me/results/7dd1dd88-4cf4-433a-9c29-7be31b1a7fb4/

SH256 hash:

a625d6907bfbe84ce307e84165f6d13f4104b1d51baf876bf37aba0d3f847578

MD5 hash:

5024f50dee0b973c1b3c8f23f807d7fb

SHA1 hash:

2652a393c4127dd6ab4d39eda549da604af456a4

Link:

https://www.unpac.me/results/7dd1dd88-4cf4-433a-9c29-7be31b1a7fb4/

SH256 hash:

ca1ae12ebc8f7e455c88b32a15584b2f0288b70ab55bce92fedc12097175ac7b

MD5 hash:

8fedc40edd6c61f05b12915fb67cf62c

SHA1 hash:

10527a4dac1f9af707f4170191bc682c6d6ad3c9

Detections:

INDICATOR_EXE_Packed_SmartAssembly

Link:

https://www.unpac.me/results/7dd1dd88-4cf4-433a-9c29-7be31b1a7fb4/

Parent samples :
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SH256 hash:

e3c8e994f072159300d8d2e50bd7fef34c35f932c0de8e7839386bb7eb9e74a3

MD5 hash:

1b478607102842b01212385b38ee7fd5

SHA1 hash:

0d8d9dda447e332d5acb8ccb0d80ce9c12edec9c

Link:

https://www.unpac.me/results/7dd1dd88-4cf4-433a-9c29-7be31b1a7fb4/

SH256 hash:

41b315e70843bdcd5a9cc1b8c8f86ddd1fd11c7423ec3842d689515743900240

MD5 hash:

9c33312023037939a8a67002fffddf0d

SHA1 hash:

17bc2635d50b16539ed986cdf9ea23c1ffee84af

Detections:

INDICATOR_EXE_Packed_SmartAssembly

Link:

https://www.unpac.me/results/7dd1dd88-4cf4-433a-9c29-7be31b1a7fb4/

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/41b315e70843/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/41b315e70843bdcd5a9cc1b8c8f86ddd1fd11c7423ec3842d689515743900240

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:	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
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_Digital_Certificate Create hunting rule
Author:	albertzsigovits

Rule name:	pe_imphash Create hunting rule

Rule name:	PE_Potentially_Signed_Digital_Certificate Create hunting rule
Author:	albertzsigovits

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:	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.

No further information available

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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