MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4cfe4e820c2d2b070d71009beaa98c9f7dce82de24266a344b743c7f47fea142. 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: 8

Intelligence 8 IOCs YARA 1 File information Comments

SHA256 hash:	4cfe4e820c2d2b070d71009beaa98c9f7dce82de24266a344b743c7f47fea142
SHA3-384 hash:	e50f0d7872f5f80e46f73669890855b099abb471aa345ab1e5cfbf8e7c0e21f5543b006c5092056f23f36c6003d9fa03
SHA1 hash:	13add61185b3372fb95e10176fd271eaf74dd917
MD5 hash:	ff67a0040556e6c67c3a2c680cc1ef01
humanhash:	kitten-quiet-princess-chicken
File name:	Readmore Details.exe
Download:	download sample
Signature	AsyncRAT Create hunting rule
File size:	274'432 bytes
First seen:	2020-08-31 05:59:10 UTC
Last seen:	2020-08-31 06:55:01 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	6144:oyi9jS6KEHvjx8v0BBva0OydipdwxH0IecsbKxQXUNLXxQbJwIciY:oyi54Ax8v0BBi0O4ydmH0IecsbKxQENM
Threatray	304 similar samples on MalwareBazaar
TLSH	FC44F109F2CC9182CBAB12B7A93998D247B8EEDE95D6974C79DCF46006B77D1240438F
Reporter	abuse_ch
Tags:	AsyncRAT exe RAT

abuse_ch

Malspam distributing AsyncRAT:

HELO: server1.domainrevive.com
Sending IP: 209.188.7.162
From: mrdaan@dallisonwed.com
Subject: COOPERATION OFFER
Attachment: Readmore Details.rar (contains "Readmore Details.exe")

AsyncRAT C2:
103.207.39.83:1024

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

n/a

Vendor Threat Intelligence

Detection:

AsyncRat

Link:

https://www.capesandbox.com/analysis/53269/

Detection(s):

SecuriteInfo.com.ArtemisFF67A0040556.24848.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Creating a file in the %temp% directory

Sending a UDP request

Launching a process

Creating a file

Sending a custom TCP request

Using the Windows Management Instrumentation requests

Reading critical registry keys

Enabling autorun by creating a file

Unauthorized injection to a system process

Result

Threat name:

AsyncRAT

Detection:

malicious

Classification:

troj.adwa.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/454900

Signature

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Drops PE files to the startup folder

Hides that the sample has been downloaded from the Internet (zone.identifier)

Machine Learning detection for dropped file

Machine Learning detection for sample

Maps a DLL or memory area into another process

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)

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

Writes to foreign memory regions

Yara detected AsyncRAT

Yara detected Costura Assembly Loader

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/4cfe4e820c2d2b070d71009beaa98c9f7dce82de24266a344b743c7f47fea142/

Threat name:

Win32.Trojan.Kryptik

Status:

Malicious

First seen:

2020-08-30 19:24:32 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

24 of 29 (82.76%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=jt7e5aqmfuvqodlracn6vkmmt5645aw6eqtguncloq6h6r76ufba._file

Verdict:

suspicious

Result

Malware family:

asyncrat

Score:

10/10

Tags:

rat family:asyncrat spyware

Link:

https://tria.ge/reports/200831-y52czrfyaa/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Drops startup file

Reads user/profile data of web browsers

Async RAT payload

AsyncRat

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Malicious File

Score:

0.91

Link:

https://yomi.yoroi.company/submissions/4cfe4e820c2d2b070d71009beaa98c9f7dce82de24266a344b743c7f47fea142

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.