MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a7d154f84e7a403374138e5659ce8d997f5b225c311389fe5af702255a783aea. 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:	a7d154f84e7a403374138e5659ce8d997f5b225c311389fe5af702255a783aea
SHA3-384 hash:	e8dba5ed3839d788635ff961e7fb8215f86172439c3b4313e48821bb8f3d9ea70e96b24e063ee7c4d418b00285278dad
SHA1 hash:	e7f200779a30b19c59829fcc07b528035db3e6f8
MD5 hash:	ec572e8f08eeae50f57eeb768914561d
humanhash:	nitrogen-eighteen-avocado-leopard
File name:	xVDnoXtgbTMW.exe
Download:	download sample
Signature	AsyncRAT Create hunting rule
File size:	64'512 bytes
First seen:	2024-04-11 16:49:26 UTC
Last seen:	2024-04-11 16:49:48 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'610 x Formbook, 12'242 x SnakeKeylogger)
ssdeep	1536:v2wukvF1ak9gcKu5UYFLGXw5bfAPls87WurPlTGhx:v2dkvF1ak9Ku5UYFLGXw5bfmzdax
Threatray	3'100 similar samples on MalwareBazaar
TLSH	T16F53E7013BF98125F3BE8FB469F6658506F9F5AF2D12C55D0C8910CE0632B869981FBB
TrID	60.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.8% (.SCR) Windows screen saver (13097/50/3) 8.7% (.EXE) Win64 Executable (generic) (10523/12/4) 5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter	pmelson
Tags:	AsyncRAT exe

Intelligence

File Origin

# of uploads :

# of downloads :

336

Origin country :

Vendor Threat Intelligence

Malware family:

asyncrat

ID:

File name:

a7d154f84e7a403374138e5659ce8d997f5b225c311389fe5af702255a783aea.exe

Verdict:

Malicious activity

Analysis date:

2024-04-11 16:51:56 UTC

Tags:

asyncrat rat

Link:

https://app.any.run/tasks/876e36a6-0554-4b7b-9f88-cadbd2e028ab

Note:

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

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

DNS request

Connection attempt

Verdict:

Malicious

Labled as:

AsyncRAT.Marte.B.Generic

Link:

https://www.hybrid-analysis.com/sample/a7d154f84e7a403374138e5659ce8d997f5b225c311389fe5af702255a783aea

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:

AsyncRAT

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/7bcc640c-cace-45d7-a9db-6c716831e26a

Result

Threat name:

AsyncRAT

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1424617

Signature

.NET source code contains potential unpacker

Antivirus / Scanner detection for submitted sample

Contains functionality to log keystrokes (.Net Source)

Found malware configuration

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

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 Generic Downloader

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/a7d154f84e7a403374138e5659ce8d997f5b225c311389fe5af702255a783aea

Detection:

asyncrat

Link:

https://mwdb.cert.pl/sample/a7d154f84e7a403374138e5659ce8d997f5b225c311389fe5af702255a783aea/

Threat name:

ByteCode-MSIL.Backdoor.AsyncRAT

Status:

Malicious

First seen:

2024-04-11 16:50:05 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

22 of 24 (91.67%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=u7ivj6copjadg5atrzlfttuntf7vwis4gejyt7s264bckwtyhlva._file

Verdict:

malicious

Label(s):

asyncrat

AsyncRAT

5732891fc200a9a59fdf3b2f96d5977152d1b76eb7220c8fcb28fc476945cddc

AsyncRAT

bd54c2a5e07d4c0df9cb844d8a952ba3746dc1761d833a710d33309f75539e73

AsyncRAT

e3922972e0bf6c9b59bf0a4234818b92d9ccecda13d6ad729c86ab6143f79179

AsyncRAT

fb0cedd17622c47554bc9fada82b2135838059aae5fa17ead92ab3fd222cfab5

AsyncRAT

+ 3'090 additional samples on MalwareBazaar

Result

Malware family:

asyncrat

Score:

10/10

Tags:

family:asyncrat botnet:default rat

Link:

https://tria.ge/reports/240411-vb858aba4z/

Behaviour

AsyncRat

Malware Config

C2 Extraction:

firmes777.duckdns.org:3080

Unpacked files

SH256 hash:

a7d154f84e7a403374138e5659ce8d997f5b225c311389fe5af702255a783aea

MD5 hash:

ec572e8f08eeae50f57eeb768914561d

SHA1 hash:

e7f200779a30b19c59829fcc07b528035db3e6f8

Detections:

AsyncRAT

win_asyncrat_w0

INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse

INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs

asyncrat

Link:

https://www.unpac.me/results/e7e2bf34-9e7f-40eb-a5ac-0fab69fe7dc1/

Malware family:

AsyncRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/a7d154f84e7a/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/a7d154f84e7a403374138e5659ce8d997f5b225c311389fe5af702255a783aea

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:	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:	INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs Create hunting rule
Author:	ditekSHen
Description:	Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs.

Rule name:	INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse Create hunting rule
Author:	ditekSHen
Description:	Detects file containing reversed ASEP Autorun registry keys

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:	MAL_AsnycRAT Create hunting rule
Author:	SECUINFRA Falcon Team
Description:	Detects AsnycRAT based on it's config decryption routine

Rule name:	MAL_AsyncRAT_Config_Decryption Create hunting rule
Author:	SECUINFRA Falcon Team
Description:	Detects AsnycRAT based on it's config decryption routine

Rule name:	Mal_WIN_AsyncRat_RAT_PE Create hunting rule
Author:	Phatcharadol Thangplub
Description:	Use to detect AsyncRAT implant.

Rule name:	msil_suspicious_use_of_strreverse Create hunting rule
Author:	dr4k0nia
Description:	Detects mixed use of Microsoft.CSharp and VisualBasic to use StrReverse

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:	pe_imphash Create hunting rule

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:	SUSP_Reverse_Run_Key Create hunting rule
Author:	SECUINFRA Falcon Team
Description:	Detects a Reversed Run Key

Rule name:	Windows_Generic_Threat_ce98c4bc Create hunting rule
Author:	Elastic Security

Rule name:	Windows_Trojan_Asyncrat_11a11ba1 Create hunting rule
Author:	Elastic Security

Rule name:	win_asyncrat_bytecodes Create hunting rule
Author:	Matthew @ Embee_Research
Description:	Detects bytecodes present in unobfuscated AsyncRat Samples. Rule may also pick up on other Asyncrat-derived malware (Dcrat/venom etc)

Rule name:	win_asyncrat_j1 Create hunting rule
Author:	Johannes Bader @viql
Description:	detects AsyncRAT

Rule name:	win_asyncrat_unobfuscated Create hunting rule
Author:	Matthew @ Embee_Research
Description:	Detects strings present in unobfuscated AsyncRat Samples. Rule may also pick up on other Asyncrat-derived malware (Dcrat/venom etc)

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.

Web download

AsyncRAT

exe a7d154f84e7a403374138e5659ce8d997f5b225c311389fe5af702255a783aea

(this sample)

Link

https://www.virustotal.com/gui/file/a7d154f84e7a403374138e5659ce8d997f5b225c311389fe5af702255a783aea/detection

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 (GUARD_CF)	high

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