MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80. 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 16 File information Comments 1

SHA256 hash:	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80
SHA3-384 hash:	49a94c709928fb1ad78fa369bb4caaea4a7ff3c34e108767002704a0d98df7878a3ffed769b65facc4cea1a41f3e3e0b
SHA1 hash:	c746978c6c091d94f2bbd17b1ad5954c4306bece
MD5 hash:	4fb681131f7ac7824c4f0afd337986d9
humanhash:	magnesium-winner-jersey-green
File name:	4fb681131f7ac7824c4f0afd337986d9
Download:	download sample
Signature	AsyncRAT Create hunting rule
File size:	75'776 bytes
First seen:	2024-08-04 12:06:51 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'452 x Formbook, 12'202 x SnakeKeylogger)
ssdeep	1536:EUo0cxhzjBCViPMVXOS0GIkH1b6/20AuQQzcqLVclN:EUlcxhzVCiPMVOkH1b6+/QbBY
Threatray	633 similar samples on MalwareBazaar
TLSH	T1AE73390237D88D29F3AE4BB9BCF251070EB4E1576516CE5E6CC400CD6A67BC59A037EA
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	zbetcheckin
Tags:	32 AsyncRAT exe

Intelligence

File Origin

# of uploads :

# of downloads :

408

Origin country :

Vendor Threat Intelligence

Malware family:

asyncrat

ID:

File name:

4fb681131f7ac7824c4f0afd337986d9

Verdict:

Malicious activity

Analysis date:

2024-08-04 12:07:26 UTC

Tags:

asyncrat

Link:

https://app.any.run/tasks/a783857f-3c38-4650-aaac-9070996fb551

Note:

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

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=66af6eee037b02d0daed86a5

Tags:

Execution Infostealer Network Stealth Trojan

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a file in the %AppData% subdirectories

Сreating synchronization primitives

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

Connection attempt

Sending a custom TCP request

Creating a window

Unauthorized injection to a recently created process

Setting a global event handler for the keyboard

Enabling autorun by creating a file

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-debug anti-vm configsecuritypolicy evasive hacktool hook keylogger lolbin mpcmdrun msconfig msiexec njrat rat regedit schtasks vbnet

Link:

https://www.filescan.io/uploads/66af6eea84afcda96264d7f3/reports/f2fc85c2-478b-4646-b8c6-5674b7a036e6/overview

Verdict:

Malicious

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80

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.

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/bd8123da-9ec6-4414-913f-3bd804f4405d

Result

Threat name:

AsyncRAT, VenomRAT

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1487500

Signature

.NET source code contains potential unpacker

.NET source code references suspicious native API functions

AI detected suspicious sample

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Contains functionality to log keystrokes (.Net Source)

Found malware configuration

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

Sigma detected: Invoke-Obfuscation CLIP+ Launcher

Sigma detected: Invoke-Obfuscation VAR+ Launcher

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

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

Yara detected AsyncRAT

Yara detected VenomRAT

Behaviour

Behavior Graph:

Download SVG

Score:

95%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80/

Threat name:

ByteCode-MSIL.Backdoor.AsyncRAT

Status:

Malicious

First seen:

2024-08-04 12:07:06 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

21 of 24 (87.50%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=zq4pwpxdej3amjmldoomxkefhe6w5vffjji257xtbjtjzxaxd2aa._file

Verdict:

malicious

AsyncRAT

243107799d46411f4a919d7117eef4b5f1718dc997bf9ef316ed822ea93b29e8

AsyncRAT

6980471f4e5af800df1c549940675788c8ff92a0407a158ba2bd56fe538707d9

AsyncRAT

70d3c80f3388568d97928cd5c2c236b4436459487b1e4e84e49144930a290fe3

AsyncRAT

9cb9f9145a6ee0e02edeb9bc4def3214418342fe7e3a130ba8511a1c8ed77fcd

AsyncRAT

f5958eae1d68011fc17a9fbb2f22c18221c36db1984de47a294e274eb4b62f32

AsyncRAT

+ 623 additional samples on MalwareBazaar

Result

Malware family:

asyncrat

Score:

10/10

Tags:

family:asyncrat botnet:100 rnd rat

Link:

https://tria.ge/reports/240804-paa9xaygkd/

Behaviour

Delays execution with timeout.exe

Scheduled Task/Job: Scheduled Task

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Enumerates physical storage devices

Checks computer location settings

Executes dropped EXE

Async RAT payload

AsyncRat

Malware Config

C2 Extraction:

91.92.243.191:5401

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/04b2a24d-4848-4647-9fb8-3b7e6f1d6cde

Unpacked files

SH256 hash:

cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80

MD5 hash:

4fb681131f7ac7824c4f0afd337986d9

SHA1 hash:

c746978c6c091d94f2bbd17b1ad5954c4306bece

Detections:

VenomRat

AsyncRAT

Link:

https://www.unpac.me/results/ebf237b5-0b4d-45db-984e-352a0a0ba4af/

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/cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80

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:	EXE_VenomRAT_May_2024 Create hunting rule
Author:	NDA0E
Description:	Detects VenomRAT

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

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:	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:	venomrat Create hunting rule
Author:	jeFF0Falltrades

Rule name:	Windows_Generic_Threat_ce98c4bc 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)

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

AsyncRAT

exe cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80

(this sample)

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/3088204/

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 (HIGH_ENTROPY_VA)	high

Comments

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zbet commented on 2024-08-04 12:06:52 UTC

url : hxxp://91.92.251.56/client.exe