MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 817940c9dd88c9d185f58532e2027e9df7bfaca8249ec96ae055da03c8750f20. 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: 14

Intelligence 14 IOCs YARA 35 File information Comments 1

SHA256 hash:	817940c9dd88c9d185f58532e2027e9df7bfaca8249ec96ae055da03c8750f20
SHA3-384 hash:	5fc94d7c10902945143cd83d6f2041701a8956c281910e451d53f9213c88ec01f22b03fe6648716c561ce8ec5ab823c3
SHA1 hash:	ba30bde364d564268d175090364158cb66c165a9
MD5 hash:	da34ea26ddfedfd7966e8aedf0bb93e6
humanhash:	eighteen-shade-golf-zebra
File name:	da34ea26ddfedfd7966e8aedf0bb93e6
Download:	download sample
Signature	AsyncRAT Create hunting rule
File size:	179'200 bytes
First seen:	2024-06-28 07:37:03 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep	3072:oe8p6ewdOIwQx76vK/bvTv0cU+lL/dMlZZUZ0b2gT7wARE+WpCc:86ewwIwQJ6vKX0c5MlYZ0b2c
Threatray	101 similar samples on MalwareBazaar
TLSH	T1B1045B5837D80A15F3BE5FB8F4B012118B71B477AA1AE75F18E920EE0D62351E911FA3
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 :

415

Origin country :

Vendor Threat Intelligence

Detection(s):

Win.Packed.AsyncRAT-9856570-1

Win.Packed.AsyncRAT-9938103-1

Win.Malware.Msilzilla-10007231-0

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=667e68577d0a7ff58bc74dc5win10vpnfull_triage

Tags:

Execution Network Stealth Heur

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Using the Windows Management Instrumentation requests

Creating a file

Reading critical registry keys

Creating a file in the %temp% directory

Creating a window

Running batch commands

Launching a process

Launching the process to change network settings

Сreating synchronization primitives

DNS request

Connection attempt

Sending an HTTP GET request

Sending a custom TCP request

Enabling the 'hidden' option for recently created files

Stealing user critical data

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm anti-vm asyncrat cmd crypto evasive findstr hacktool hook keylogger lolbin net netsh njrat reg schtasks stealer vbnet

Link:

https://www.filescan.io/uploads/667e685a26c925aa13a6da1d/reports/41508ea0-e5c3-40c7-9134-d9c9e4f76e79/overview

Verdict:

Malicious

Labled as:

Jalapeno.Generic

Link:

https://www.hybrid-analysis.com/sample/817940c9dd88c9d185f58532e2027e9df7bfaca8249ec96ae055da03c8750f20

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:

Stealerium Stealer

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/4e8f0db0-2f47-4bd1-84d8-37d008123291

Result

Threat name:

AsyncRAT, StormKitty, WorldWind Stealer

Detection:

malicious

Classification:

rans.troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1464030

Signature

AI detected suspicious sample

Connects to a pastebin service (likely for C&C)

Contains functionality to capture screen (.Net source)

Contains functionality to log keystrokes (.Net Source)

Found malware configuration

Found many strings related to Crypto-Wallets (likely being stolen)

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Modifies existing user documents (likely ransomware behavior)

Multi AV Scanner detection for domain / URL

Multi AV Scanner detection for submitted file

Queries sensitive Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines)

Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)

Sigma detected: Capture Wi-Fi password

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)

Tries to harvest and steal WLAN passwords

Uses netsh to modify the Windows network and firewall settings

Uses the Telegram API (likely for C&C communication)

Yara detected AsyncRAT

Yara detected Generic Downloader

Yara detected StormKitty Stealer

Yara detected Telegram RAT

Yara detected Telegram Recon

Yara detected WorldWind Stealer

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/817940c9dd88c9d185f58532e2027e9df7bfaca8249ec96ae055da03c8750f20

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/817940c9dd88c9d185f58532e2027e9df7bfaca8249ec96ae055da03c8750f20/

Threat name:

ByteCode-MSIL.Backdoor.AsyncRAT

Status:

Malicious

First seen:

2024-06-27 14:08:17 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

23 of 24 (95.83%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=qf4ubso5rde5dbpvquzoeat6tx337lfiespms2xakxnahsdvb4qa._file

Verdict:

malicious

AsyncRAT

bfc572da40fc3dcbee2ff5590ad5f630becf69e18df37b44140bd4f214facf56

AsyncRAT

d242df7f2b38186e3ff903b28119c09883df033ba2519e9b5f19eb0652f78975

AsyncRAT

db3e6984b0aca83c8c926cd740f4459ff995550baab09c2dfbde0bea8ce5669d

AsyncRAT

ea0ac7277d0fdf801972b56bdc57184fc51ac8be47438873396436736f3694a9

AsyncRAT

+ 91 additional samples on MalwareBazaar

Result

Malware family:

stormkitty

Score:

10/10

Tags:

family:asyncrat family:stormkitty botnet:default persistence privilege_escalation rat spyware stealer

Link:

https://tria.ge/reports/240628-jgc47axhld/

Behaviour

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Event Triggered Execution: Netsh Helper DLL

Drops desktop.ini file(s)

Looks up external IP address via web service

Looks up geolocation information via web service

Reads user/profile data of web browsers

AsyncRat

StormKitty

StormKitty payload

Malware Config

C2 Extraction:

127.0.0.1:6606
127.0.0.1:7707
127.0.0.1:8808
https://api.telegram.org/bot7379351260:AAGqtKlpHd72GFMRON17QY1OA6l1sR7mBik/sendMessage?chat_id=5795480469

Unpacked files

SH256 hash:

817940c9dd88c9d185f58532e2027e9df7bfaca8249ec96ae055da03c8750f20

MD5 hash:

da34ea26ddfedfd7966e8aedf0bb93e6

SHA1 hash:

ba30bde364d564268d175090364158cb66c165a9

Detections:

WorldWindStealer

win_asyncrat_w0

INDICATOR_SUSPICIOUS_EXE_WirelessNetReccon

INDICATOR_SUSPICIOUS_EXE_TelegramChatBot

SUSP_NET_Msil_Suspicious_Use_StrReverse

INDICATOR_SUSPICIOUS_EXE_Discord_Regex

INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse

cn_utf8_windows_terminal

INDICATOR_SUSPICIOUS_EXE_References_VPN

MALWARE_Win_WorldWind

INDICATOR_SUSPICIOUS_EXE_RawPaste_URL

INDICATOR_SUSPICIOUS_EXE_RawGitHub_URL

MALWARE_Win_Multi_Family_InfoStealer

MALWARE_Win_StormKitty

INDICATOR_SUSPICIOUS_EXE_CC_Regex

INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID

asyncrat

INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL

INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

Link:

https://www.unpac.me/results/7da0ce9c-5a9c-4a14-a502-deab3f9962cb/

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:	asyncrat_kingrat Create hunting rule
Author:	jeFF0Falltrades

Rule name:	DebuggerCheck__RemoteAPI Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

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

Rule name:	INDICATOR_SUSPICIOUS_EXE_CC_Regex Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing credit card regular expressions

Rule name:	INDICATOR_SUSPICIOUS_EXE_Discord_Regex Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing Discord tokens regular expressions

Rule name:	INDICATOR_SUSPICIOUS_EXE_RawPaste_URL Create hunting rule
Author:	ditekSHen
Description:	Detects executables (downlaoders) containing URLs to raw contents of a paste

Rule name:	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

Rule name:	INDICATOR_SUSPICIOUS_EXE_References_VPN Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many VPN software clients. Observed in infosteslers

Rule name:	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL Create hunting rule
Author:	ditekSHen
Description:	Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

Rule name:	INDICATOR_SUSPICIOUS_EXE_TelegramChatBot Create hunting rule
Author:	ditekSHen
Description:	Detects executables using Telegram Chat Bot

Rule name:	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing Windows vault credential objects. Observed in infostealers

Rule name:	INDICATOR_SUSPICIOUS_EXE_WirelessNetReccon Create hunting rule
Author:	ditekSHen
Description:	Detects executables with interest in wireless interface using netsh

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:	MALWARE_Win_Multi_Family_InfoStealer Create hunting rule
Author:	ditekSHen
Description:	Detects Prynt, WorldWind, DarkEye, Stealerium and ToxicEye / TelegramRAT infostealers

Rule name:	MALWARE_Win_StormKitty Create hunting rule
Author:	ditekSHen
Description:	Detects StormKitty infostealer

Rule name:	MALWARE_Win_WorldWind Create hunting rule
Author:	ditekSHen
Description:	Detects WorldWind infostealer

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:	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:	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:	SUSP_NET_Msil_Suspicious_Use_StrReverse Create hunting rule
Author:	dr4k0nia, modified by Florian Roth
Description:	Detects mixed use of Microsoft.CSharp and VisualBasic to use StrReverse
Reference:	https://github.com/dr4k0nia/yara-rules

Rule name:	Windows_Generic_Threat_2bb6f41d Create hunting rule
Author:	Elastic Security

Rule name:	Windows_Generic_Threat_62e1f5fc 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 817940c9dd88c9d185f58532e2027e9df7bfaca8249ec96ae055da03c8750f20

(this sample)

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/2910311/

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

Comments

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zbet commented on 2024-06-28 07:37:04 UTC

url : hxxp://lsrael.today/Serverssss.exe