MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 821900f5cf0981a062d0683d5a5905ce407a035d9e0ab7ee0bd110a7403321d1. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 821900f5cf0981a062d0683d5a5905ce407a035d9e0ab7ee0bd110a7403321d1
SHA3-384 hash: 4b75422ba3f113cc718e063559b810a8478b7c7b3c21d214f9a03d4bf9758a3cef97bd80622309366eb46e3da30d8609
SHA1 hash: 17ba269221f5e728a768f0e19bd1acf8759f44ac
MD5 hash: a8884d5c23826a156a79a2e40ddbc10f
humanhash: michigan-dakota-oven-video
File name:a8884d5c23826a156a79a2e40ddbc10f.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:1'276'928 bytes
First seen:2024-04-04 19:55:10 UTC
Last seen:2024-04-04 20:19:17 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 1536:67ja7Fg3dR05lpUFpILxwr1088AEUHXTit6oAfMOnYZm/ZMp+E1U793K7nadtU4s:6QiRGpUcwrXLEKXTToMMIYU60gqtU4s
TLSH T12F45C0B9329B81D6C18DB8F9DCAE79525691AEB3F16EC3337898321DC06F6C41F16811
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)
File icon (PE):PE icon
dhash icon e8f4d74df8f069b2 (1 x AsyncRAT)
Reporter abuse_ch
Tags:AsyncRAT exe RAT


Avatar
abuse_ch
AsyncRAT C2:
146.103.11.88:8808

Intelligence

File Origin
# of uploads :
2
# of downloads :
429
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
821900f5cf0981a062d0683d5a5905ce407a035d9e0ab7ee0bd110a7403321d1.exe
Verdict:
Malicious activity
Analysis date:
2024-04-04 19:57:37 UTC
Tags:
remote rat asyncrat
Link:
https://app.any.run/tasks/8a5b678f-58d7-4f9d-aa87-6bfaed221ac3

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
Creating a file
Creating a process from a recently created file
Launching a process
Searching for the browser window
Searching for the window
DNS request
Connection attempt
Sending a custom TCP request
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 window
Using the Windows Management Instrumentation requests
Moving a file to the Program Files subdirectory
Replacing files
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:
asyncrat overlay packed
Link:
https://www.filescan.io/uploads/660f05d3391c61c47915934e/reports/438d5270-e625-4b42-8d7a-d5382aec62ce/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/821900f5cf0981a062d0683d5a5905ce407a035d9e0ab7ee0bd110a7403321d1
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/27965499-f8cb-4871-b3f2-b05191b47dd5
Result
Threat name:
AsyncRAT, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1420488
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Injects a PE file into a foreign processes
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
Sigma detected: PowerShell Base64 Encoded IEX Cmdlet
Sigma detected: Powershell Download and Execute IEX
Sigma detected: Powerup Write Hijack DLL
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious PowerShell Parameter Substring
Sigma detected: Windows Shell/Scripting Application File Write to Suspicious Folder
Sigma detected: WScript or CScript Dropper
Snort IDS alert for network traffic
Suspicious execution chain found
Suspicious powershell command line found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Uses known network protocols on non-standard ports
Uses schtasks.exe or at.exe to add and modify task schedules
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected AntiVM3
Yara detected AsyncRAT
Yara detected Generic Downloader
Yara detected Powershell download and execute
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1420488 Sample: vlA4KU3M3I.exe Startdate: 04/04/2024 Architecture: WINDOWS Score: 100 82 mrreport.duckdns.org 2->82 84 bg.microsoft.map.fastly.net 2->84 106 Snort IDS alert for network traffic 2->106 108 Found malware configuration 2->108 110 Malicious sample detected (through community Yara rule) 2->110 114 26 other signatures 2->114 9 wscript.exe 2->9         started        12 vlA4KU3M3I.exe 1 19 2->12         started        15 Windows Session Manager.exe 1 4 2->15         started        signatures3 112 Uses dynamic DNS services 82->112 process4 dnsIp5 116 Wscript starts Powershell (via cmd or directly) 9->116 118 Windows Scripting host queries suspicious COM object (likely to drop second stage) 9->118 120 Suspicious execution chain found 9->120 18 cmd.exe 9->18         started        76 C:\Users\user\...\Windows Session Manager.exe, PE32 12->76 dropped 78 C:\Users\user\...\Windows Session Manage.exe, PE32 12->78 dropped 122 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 12->122 21 Windows Session Manage.exe 7 12->21         started        24 chrome.exe 1 12->24         started        27 Windows Session Manager.exe 2 12->27         started        98 mrreport.duckdns.org 146.103.11.88, 222, 49753, 49763 BELNETBE Belgium 15->98 80 C:\Users\user\AppData\Local\Temp\tlqckj.bat, Unicode 15->80 dropped 29 cmd.exe 15->29         started        file6 signatures7 process8 dnsIp9 100 Suspicious powershell command line found 18->100 102 Wscript starts Powershell (via cmd or directly) 18->102 104 Bypasses PowerShell execution policy 18->104 31 powershell.exe 18->31         started        34 conhost.exe 18->34         started        74 C:\Users\user\...\Windows Session Manager.exe, PE32 21->74 dropped 36 cmd.exe 1 21->36         started        38 cmd.exe 1 21->38         started        86 192.168.2.4, 138, 222, 443 unknown unknown 24->86 88 192.168.2.18 unknown unknown 24->88 90 3 other IPs or domains 24->90 40 chrome.exe 24->40         started        43 conhost.exe 27->43         started        45 cmd.exe 29->45         started        47 conhost.exe 29->47         started        file10 signatures11 process12 dnsIp13 124 Writes to foreign memory regions 31->124 126 Injects a PE file into a foreign processes 31->126 49 RegSvcs.exe 31->49         started        51 RegSvcs.exe 31->51         started        53 RegSvcs.exe 31->53         started        128 Uses schtasks.exe or at.exe to add and modify task schedules 36->128 55 conhost.exe 36->55         started        57 schtasks.exe 1 36->57         started        59 conhost.exe 38->59         started        61 timeout.exe 1 38->61         started        63 Windows Session Manager.exe 38->63         started        92 t.me 149.154.167.99, 443, 49732, 49736 TELEGRAMRU United Kingdom 40->92 94 www.google.com 142.250.64.228, 443, 49747, 49764 GOOGLEUS United States 40->94 96 2 other IPs or domains 40->96 130 Suspicious powershell command line found 45->130 132 Wscript starts Powershell (via cmd or directly) 45->132 65 powershell.exe 45->65         started        signatures14 process15 file16 68 C:\Users\Public\Conted.vbs, ASCII 65->68 dropped 70 C:\Users\Public\Conted.ps1, ASCII 65->70 dropped 72 C:\Users\Public\Conted.bat, ASCII 65->72 dropped
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/821900f5cf0981a062d0683d5a5905ce407a035d9e0ab7ee0bd110a7403321d1
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/821900f5cf0981a062d0683d5a5905ce407a035d9e0ab7ee0bd110a7403321d1/
Threat name:
ByteCode-MSIL.Backdoor.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2024-03-31 11:49:30 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qimqb5opbga2aywqna6vuwifzzahua25tyflp3ql2eikoqbtehiq._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:rat15 evasion rat spyware stealer trojan
Link:
https://tria.ge/reports/240404-ynna3agg7x/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Checks whether UAC is enabled
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Blocklisted process makes network request
Async RAT payload
AsyncRat
Malware Config
C2 Extraction:
darkstorm275991.ddns.net:6606
darkstorm275991.ddns.net:7707
darkstorm275991.ddns.net:8808
mrreport.duckdns.org:6606
mrreport.duckdns.org:7707
mrreport.duckdns.org:8808
Unpacked files
SH256 hash:
5732891fc200a9a59fdf3b2f96d5977152d1b76eb7220c8fcb28fc476945cddc
MD5 hash:
0dda2fcee8bec9941a9cf9c5bd866f10
SHA1 hash:
29dba01814ef258f12fc06f9771f8e795e0337af
Detections:
AsyncRAT
Create hunting rule
win_asyncrat_w0
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs
Create hunting rule
asyncrat
Create hunting rule
Link:
https://www.unpac.me/results/38d190c2-7dce-4e96-9d25-77be20c02544/
Parent samples :
5732891fc200a9a59fdf3b2f96d5977152d1b76eb7220c8fcb28fc476945cddc
821900f5cf0981a062d0683d5a5905ce407a035d9e0ab7ee0bd110a7403321d1
SH256 hash:
f5a031207da80580fd8a2f853f4026bec68e7acddb9bbdb7b586ede6cc643d3b
MD5 hash:
0200bc51a30cbce0876330588b6dedc7
SHA1 hash:
0f905add671396719246bd2d1874bc64ccf73819
Link:
https://www.unpac.me/results/38d190c2-7dce-4e96-9d25-77be20c02544/
SH256 hash:
821900f5cf0981a062d0683d5a5905ce407a035d9e0ab7ee0bd110a7403321d1
MD5 hash:
a8884d5c23826a156a79a2e40ddbc10f
SHA1 hash:
17ba269221f5e728a768f0e19bd1acf8759f44ac
Link:
https://www.unpac.me/results/38d190c2-7dce-4e96-9d25-77be20c02544/
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/821900f5cf09/report/overview.html
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/821900f5cf0981a062d0683d5a5905ce407a035d9e0ab7ee0bd110a7403321d1

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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

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_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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