MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8131636f942e8d790a2fe8ac83a00bafd4f7400b3cb9be084dd40c07fc159c2e. 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: 15

Intelligence 15 IOCs YARA 15 File information Comments

SHA256 hash:	8131636f942e8d790a2fe8ac83a00bafd4f7400b3cb9be084dd40c07fc159c2e
SHA3-384 hash:	9a9bed589b5af2a4114586a6e46fcfd5621eaf4b29b1bb2b51cbfe698dc4fca6fed531e980c1ce700733a8193ccd1f21
SHA1 hash:	097428581f4ce478603412d2db261a2c9d5b671d
MD5 hash:	8e143fa09a0c859f791a32e7cb625c38
humanhash:	west-undress-hawaii-sixteen
File name:	bRhS.exe
Download:	download sample
Signature	AsyncRAT Create hunting rule
File size:	48'640 bytes
First seen:	2023-11-02 23:07:26 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	768:996mxUTILWCaS+DiP4MKk81yI/Aics8Yb0geaFwtp3vEgK/J7ZVc6KN:996AKWgLjwgzbb9FwtJnkJ7ZVclN
Threatray	856 similar samples on MalwareBazaar
TLSH	T184236C4037D88036E2FD4BB4ADF3A2418679D6676903CA596CC815EA2F13FC596036FE
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 DCRat exe

Intelligence

File Origin

# of uploads :

# of downloads :

407

Origin country :

Vendor Threat Intelligence

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/457852/

Detection(s):

Sanesecurity.Malware.29669.UNOFFICIAL

Win.Malware.Generickdz-9865912-0

Win.Malware.Enigmaprotector-9874743-0

Win.Malware.Enigmaprotector-9881027-0

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

DNS request

Sending a custom TCP request

Sending an HTTP GET request

Verdict:

Malicious

Threat level:

5/10

Confidence:

100%

Tags:

anti-debug anti-vm configsecuritypolicy evasive hacktool lolbin lolbin mpcmdrun msconfig njrat packed rat regedit replace

Link:

https://www.filescan.io/uploads/65442bd9bc703e36b0987496/reports/f2388505-e5f8-40a6-a11a-5508fb148e59/overview

Verdict:

Malicious

Labled as:

Backdoo.1BBEAE4C

Link:

https://www.hybrid-analysis.com/sample/8131636f942e8d790a2fe8ac83a00bafd4f7400b3cb9be084dd40c07fc159c2e

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/a6fd1e26-1187-4db1-aa3f-098adfa5cb1a

Result

Threat name:

AsyncRAT, DcRat

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1336291

Signature

.NET source code references suspicious native API functions

Antivirus / Scanner detection for submitted sample

Antivirus detection for URL or domain

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Performs DNS queries to domains with low reputation

Yara detected AsyncRAT

Yara detected DcRat

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/8131636f942e8d790a2fe8ac83a00bafd4f7400b3cb9be084dd40c07fc159c2e

Detection:

dcrat

Link:

https://mwdb.cert.pl/sample/8131636f942e8d790a2fe8ac83a00bafd4f7400b3cb9be084dd40c07fc159c2e/

Threat name:

ByteCode-MSIL.Backdoor.AsyncRAT

Status:

Malicious

First seen:

2023-11-02 23:08:05 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

31 of 38 (81.58%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=qeywg34uf2gxscrp5cwihialv7kpoqalhs434ccn2qgap7avtqxa._file

Verdict:

malicious

AsyncRAT

188599d3566db6b2a16fbc7a8ca1fc58a3a92a75522a13beb4f0cb2f8cd1da7d

AsyncRAT

49aed29ad4a75261e3c9e5e1c7d081588d56a9d9094cfafb4298b73cdb42ff2f

AsyncRAT

8131636f942e8d790a2fe8ac83a00bafd4f7400b3cb9be084dd40c07fc159c2e

AsyncRAT

9906536e261362180e3b4c087a6e5941afd3766d077dfcfc3efbeb0ca91c9201

AsyncRAT

c9c19f83c9f151bb29cd21779c0ade1f7363805d7e3c5b6d227e109973243d6e

AsyncRAT

fd39f37e9252c859a76f65c193c869826503be3c815eab4e95cd883be307a550

AsyncRAT

+ 846 additional samples on MalwareBazaar

Result

Malware family:

asyncrat

Score:

10/10

Tags:

family:asyncrat botnet:default rat

Link:

https://tria.ge/reports/231102-24h8tsgg8v/

Behaviour

Modifies system certificate store

Suspicious use of AdjustPrivilegeToken

Legitimate hosting services abused for malware hosting/C2

Async RAT payload

AsyncRat

Unpacked files

SH256 hash:

8131636f942e8d790a2fe8ac83a00bafd4f7400b3cb9be084dd40c07fc159c2e

MD5 hash:

8e143fa09a0c859f791a32e7cb625c38

SHA1 hash:

097428581f4ce478603412d2db261a2c9d5b671d

Detections:

DCRat

Link:

https://www.unpac.me/results/570f67b3-0a82-4f90-9e56-8ce20259e5f7/

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/8131636f942e8d790a2fe8ac83a00bafd4f7400b3cb9be084dd40c07fc159c2e

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:	AcRat Create hunting rule
Author:	Nikos 'n0t' Totosis
Description:	AcRat Payload (based on AsyncRat)

Rule name:	INDICATOR_SUSPICIOUS_EXE_B64_Artifacts Create hunting rule
Author:	ditekSHen
Description:	Detects executables embedding bas64-encoded APIs, command lines, registry keys, etc.

Rule name:	INDICATOR_SUSPICIOUS_EXE_DcRatBy Create hunting rule
Author:	ditekSHen
Description:	Detects executables containing the string DcRatBy

Rule name:	INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice Create hunting rule
Author:	ditekSHen
Description:	Detects executables attemping to enumerate video devices using WMI

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:	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:	Njrat Create hunting rule
Author:	botherder https://github.com/botherder
Description:	Njrat

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:	Windows_Trojan_DCRat_1aeea1ac Create hunting rule
Author:	Elastic Security

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)