MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 20cb38b4917cc61ec7c022fe9971e96e8a1ac6a4515e2bd6097552ebff178661. 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: 11

Intelligence 11 IOCs 1 YARA 5 File information Comments 1

SHA256 hash:	20cb38b4917cc61ec7c022fe9971e96e8a1ac6a4515e2bd6097552ebff178661
SHA3-384 hash:	def2159e04354d48e9f540354041ddeeaad8ba77abe00327023964f23055bf89d9c3720e126938c67969b43955e16c37
SHA1 hash:	d8db39f034bf81e645af848420bb156943249c52
MD5 hash:	d475aca23350efc91bbcb3f8e0c61902
humanhash:	gee-purple-ack-skylark
File name:	d475aca23350efc91bbcb3f8e0c61902.exe
Download:	download sample
Signature	AsyncRAT Create hunting rule
File size:	49'152 bytes
First seen:	2021-04-23 20:21:10 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'643 x Formbook, 12'245 x SnakeKeylogger)
ssdeep	768:gugaNTokqd97WUHgAKpmo2q7R2eO0qCZANNPIGH1t/10bCEDYwVr362t9FH9EFUR:gugaNToTdQT23elSqGH1lCbCEDdVrn3R
Threatray	750 similar samples on MalwareBazaar
TLSH	19233B003BE9816BF2BE4F7498F22145867AF1673613D64E2CC441975B13FC69A42AFE
Reporter	abuse_ch
Tags:	AsyncRAT exe RAT

abuse_ch

AsyncRAT C2:
20.52.178.148:444

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOC	ThreatFox Reference
20.52.178.148:444	https://threatfox.abuse.ch/ioc/9789/

Intelligence

File Origin

# of uploads :

# of downloads :

117

Origin country :

n/a

Vendor Threat Intelligence

Detection:

AsyncRat

Link:

https://www.capesandbox.com/analysis/143942/

Detection(s):

Win.Packed.Razy-9625918-0

Result

Verdict:

Malware

Maliciousness:

Behaviour

Using the Windows Management Instrumentation requests

Running batch commands

Creating a process with a hidden window

Creating a file in the %AppData% directory

Creating a file in the %temp% directory

Creating a file

Launching a process

Creating a process from a recently created file

Creating a window

Connection attempt

Sending a UDP request

Unauthorized injection to a recently created process

Enabling autorun by creating a file

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/6674fdcf-db89-4bc6-95e6-82b553fd298a

Result

Threat name:

AsyncRAT

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/695995

Signature

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)

Found malware configuration

Machine Learning detection for dropped file

Machine Learning detection for sample

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Protects its processes via BreakOnTermination flag

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)

Tries to harvest and steal browser information (history, passwords, etc)

Uses schtasks.exe or at.exe to add and modify task schedules

Yara detected AsyncRAT

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/20cb38b4917cc61ec7c022fe9971e96e8a1ac6a4515e2bd6097552ebff178661/

Threat name:

ByteCode-MSIL.Infostealer.Fareit

Status:

Malicious

First seen:

2021-04-19 23:03:25 UTC

AV detection:

35 of 47 (74.47%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=edftrnerptdb5r6ael7js4pjn2fbvrvekfpcxvqjovjox7yxqzqq._file

Verdict:

malicious

Label(s):

asyncrat

Result

Malware family:

asyncrat

Score:

10/10

Tags:

family:asyncrat rat spyware stealer

Link:

https://tria.ge/reports/210423-1kt7668tvx/

Behaviour

Creates scheduled task(s)

Delays execution with timeout.exe

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Loads dropped DLL

Reads user/profile data of web browsers

Executes dropped EXE

Async RAT payload

AsyncRat

Malware Config

C2 Extraction:

127.0.0.1:6606
127.0.0.1:7707
127.0.0.1:8808
127.0.0.1:444
20.52.178.148:6606
20.52.178.148:7707
20.52.178.148:8808
20.52.178.148:444

Unpacked files

SH256 hash:

20cb38b4917cc61ec7c022fe9971e96e8a1ac6a4515e2bd6097552ebff178661

MD5 hash:

d475aca23350efc91bbcb3f8e0c61902

SHA1 hash:

d8db39f034bf81e645af848420bb156943249c52

Detections:

win_asyncrat_w0

Link:

https://www.unpac.me/results/d7fde6e9-12b2-4363-86f1-07e69e03ce04/

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

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:	JPCERT/CC Incident Response Group
Description:	detect AsyncRat in memory
Reference:	internal research

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

Rule name:	Reverse_text_bin_mem Create hunting rule
Author:	James_inthe_box
Description:	Reverse text detected

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

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.

Cape

https://www.capesandbox.com/analysis/143942/

Comments

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a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-04-23 21:00:18 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [B0009] Anti-Behavioral Analysis::Virtual Machine Detection