MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5a8e8e48add151c8058bad8173424e10e1a336dee8982da211d8f612323219c7. 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 6 File information Comments 1

SHA256 hash: 5a8e8e48add151c8058bad8173424e10e1a336dee8982da211d8f612323219c7
SHA3-384 hash: 8f1cc76aaf4e6040721bcf146c9ff3892fb742a7eed3ab58d02e2b00519541b391f85e6f4afa9d1a0c093bd4708eec51
SHA1 hash: 8cf5d03b5522e2f24187f04c0d3ab556fe3d1686
MD5 hash: b3c53eb5851703358e2bfacec3b19aa4
humanhash: winter-sodium-golf-whiskey
File name:b3c53eb5851703358e2bfacec3b19aa4
Download: download sample
Signature AsyncRAT
File size:16'648 bytes
First seen:2024-03-19 04:38:47 UTC
Last seen:2024-03-19 06:30:02 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 384:26kyHLpL3LxYLTLc8VcpOjAM+o/8E9VF0NyFbm:26XHFz1YnwscpOjAMxkEK
Threatray 560 similar samples on MalwareBazaar
TLSH T1BB72F9101BF95E21FB7B8F706BF49A221F32BB469D21C65F095082490D31BD599F1F62
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter zbetcheckin
Tags:32 AsyncRAT exe signed

Code Signing Certificate

Organisation:Realtek Semiconductor Corp.
Issuer:Realtek Semiconductor Corp.
Algorithm:sha256WithRSAEncryption
Valid from:2024-02-20T12:11:34Z
Valid to:2025-02-20T12:31:34Z
Serial number: 2141154bccbb529e492536c90a2e2f68
Intelligence: 2 malware samples on MalwareBazaar are signed with this code signing certificate
Thumbprint Algorithm:SHA256
Thumbprint: 05ecb1b5a4f1d4a8f51520206bd28a8eee500765d6df15876acebb47b6639f9e
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence


File Origin
# of uploads :
2
# of downloads :
617
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
5a8e8e48add151c8058bad8173424e10e1a336dee8982da211d8f612323219c7.exe
Verdict:
Malicious activity
Analysis date:
2024-03-19 04:39:24 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
DNS request
Connecting to a non-recommended domain
Connection attempt
Sending an HTTP GET request
Creating a file
Launching a process
Creating a process from a recently created file
Creating a window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm asyncrat certutil config-extracted expand explorer lolbin lolbin overlay packed packed phishing remote schtasks stealer
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.
Result
Threat name:
AsyncRAT, GMiner, Quasar
Detection:
malicious
Classification:
bank.troj.spyw.evad.mine
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Found strings related to Crypto-Mining
Hides that the sample has been downloaded from the Internet (zone.identifier)
Installs a global keyboard hook
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Registers a new ROOT certificate
Sigma detected: Powershell adding suspicious path to exclusion list
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected AsyncRAT
Yara detected Costura Assembly Loader
Yara detected Generic Downloader
Yara detected GMiner
Yara detected Quasar RAT
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1411420 Sample: nMbRell419.exe Startdate: 19/03/2024 Architecture: WINDOWS Score: 100 67 a0920080.xsph.ru 2->67 81 Found malware configuration 2->81 83 Malicious sample detected (through community Yara rule) 2->83 85 Antivirus detection for URL or domain 2->85 87 13 other signatures 2->87 8 nMbRell419.exe 15 9 2->8         started        13 nMbRell419.exe 2->13         started        15 nMbRell419.exe 2->15         started        signatures3 process4 dnsIp5 69 a0920080.xsph.ru 141.8.192.103, 49730, 49731, 49732 SPRINTHOSTRU Russian Federation 8->69 55 C:\...\Microsoft.ServiceHub.Taskhost.exe, PE32 8->55 dropped 57 C:\...\Microsoft.ServiceHub.Runtime.exe, PE32+ 8->57 dropped 59 C:\...\Microsoft.ServiceHub.Header.exe, PE32 8->59 dropped 61 2 other malicious files 8->61 dropped 89 Registers a new ROOT certificate 8->89 91 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->91 93 Adds a directory exclusion to Windows Defender 8->93 17 Microsoft.ServiceHub.Control.exe 8->17         started        21 Microsoft.ServiceHub.Anyns.exe 8->21         started        23 Microsoft.ServiceHub.Header.exe 8->23         started        31 10 other processes 8->31 25 powershell.exe 13->25         started        27 powershell.exe 13->27         started        29 powershell.exe 13->29         started        33 5 other processes 13->33 35 8 other processes 15->35 file6 signatures7 process8 dnsIp9 63 77.232.132.25 BSTV-ASRU Russian Federation 17->63 65 15.204.213.5 HP-INTERNET-ASUS United States 17->65 71 Antivirus detection for dropped file 17->71 73 Multi AV Scanner detection for dropped file 17->73 75 Machine Learning detection for dropped file 17->75 79 2 other signatures 17->79 77 Adds a directory exclusion to Windows Defender 25->77 43 2 other processes 25->43 45 2 other processes 27->45 47 2 other processes 29->47 37 powershell.exe 23 31->37         started        39 conhost.exe 31->39         started        41 conhost.exe 31->41         started        49 14 other processes 31->49 51 10 other processes 33->51 53 16 other processes 35->53 signatures10 process11
Threat name:
Win32.Backdoor.AsyncRAT
Status:
Malicious
First seen:
2024-03-17 14:48:07 UTC
File Type:
PE (.Net Exe)
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:asyncrat family:quasar botnet:terr persistence rat spyware trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Adds Run key to start application
Executes dropped EXE
Downloads MZ/PE file
Async RAT payload
AsyncRat
Quasar RAT
Quasar payload
Malware Config
C2 Extraction:
77.232.132.25:4999
77.232.132.25:5001
Unpacked files
SH256 hash:
5a8e8e48add151c8058bad8173424e10e1a336dee8982da211d8f612323219c7
MD5 hash:
b3c53eb5851703358e2bfacec3b19aa4
SHA1 hash:
8cf5d03b5522e2f24187f04c0d3ab556fe3d1686
Malware family:
QuasarRAT
Verdict:
Malicious
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:Disable_Defender
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:NET
Author:malware-lu
Rule name:PE_Digital_Certificate
Author:albertzsigovits
Rule name:pe_imphash
Rule name:PE_Potentially_Signed_Digital_Certificate
Author:albertzsigovits
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash

File information


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

Web download

AsyncRAT

Executable exe 5a8e8e48add151c8058bad8173424e10e1a336dee8982da211d8f612323219c7

(this sample)

  
Delivery method
Distributed via web download

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
IDTitleSeverity
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments



Avatar
zbet commented on 2024-03-19 04:38:48 UTC

url : hxxp://a0920080.xsph.ru/RtkAudBCK.exe