MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 40cb5b00771d8e3978a44781777e21d92b7d6923cb33a05dd8628220ca25b9fa. 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: 12


Intelligence 12 IOCs YARA File information Comments

SHA256 hash: 40cb5b00771d8e3978a44781777e21d92b7d6923cb33a05dd8628220ca25b9fa
SHA3-384 hash: a817233d69c016c41ca18a5bd2e5bb1e1e3b9c1c3da717c0c80e48d8f70bc518ce86f8daeeb20eba70761a82b063a298
SHA1 hash: b96d05322cf712a3c7cb921ff012e880e95917e6
MD5 hash: 20568d77c88a9b0f9c341f7c78b019d7
humanhash: august-venus-bluebird-purple
File name:20568d77c88a9b0f9c341f7c78b019d7.exe
Download: download sample
Signature AsyncRAT
File size:46'080 bytes
First seen:2023-02-06 09:07:16 UTC
Last seen:2023-02-06 11:19:24 UTC
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 768:WTGbOQcKjLZJV3PHsZtWsV+gZSynnn9tqVqBfEDRUT0x9Psn/JB6SWrSvrI/Od0:WibOQP5EZMhAtq6fiGAx9+JoDSE/Od0
Threatray 4'113 similar samples on MalwareBazaar
TLSH T172235B007BDC827AE6BD5B7C99F1621586B5E1732513E78D1CC841EA0E23BC98B41BF6
TrID 44.4% (.EXE) Win64 Executable (generic) (10523/12/4)
21.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.ICL) Windows Icons Library (generic) (2059/9)
8.5% (.EXE) OS/2 Executable (generic) (2029/13)
8.4% (.EXE) Generic Win/DOS Executable (2002/3)
Reporter abuse_ch
Tags:AsyncRAT exe

Intelligence


File Origin
# of uploads :
2
# of downloads :
181
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
asyncrat
ID:
1
File name:
20568d77c88a9b0f9c341f7c78b019d7.exe
Verdict:
Malicious activity
Analysis date:
2023-02-06 09:09:57 UTC
Tags:
asyncrat trojan bitrat rat

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
Adding an access-denied ACE
Creating a file
Launching a process
Creating a process with a hidden window
Creating a file in the %temp% directory
Running batch commands
Creating a process from a recently created file
Using the Windows Management Instrumentation requests
DNS request
Sending a custom TCP request
Creating a window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
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:
njrat rat schtasks.exe zilla
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:
Unknown
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Contains functionality to log keystrokes (.Net Source)
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
Obfuscated command line found
Sigma detected: Schedule system process
Snort IDS alert for network traffic
Uses cmd line tools excessively to alter registry or file data
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 798961 Sample: 3bRwEm8lPC Startdate: 06/02/2023 Architecture: WINDOWS Score: 100 59 Snort IDS alert for network traffic 2->59 61 Antivirus detection for URL or domain 2->61 63 Antivirus / Scanner detection for submitted sample 2->63 65 6 other signatures 2->65 9 3bRwEm8lPC.exe 1 8 2->9         started        13 $77WInlogon.exe 3 2->13         started        process3 file4 51 C:\Users\user\Chrome\$77WInlogon.exe, PE32+ 9->51 dropped 53 C:\Users\user\AppData\...\3bRwEm8lPC.exe.log, CSV 9->53 dropped 75 Uses cmd line tools excessively to alter registry or file data 9->75 15 cmd.exe 1 9->15         started        17 attrib.exe 1 9->17         started        19 attrib.exe 1 9->19         started        signatures5 process6 process7 21 $77WInlogon.exe 14 3 15->21         started        25 conhost.exe 15->25         started        27 timeout.exe 1 15->27         started        29 conhost.exe 17->29         started        31 conhost.exe 19->31         started        dnsIp8 55 jagerway.ddns.net 23.251.17.65, 4782, 49696 CABLEONEUS United States 21->55 57 discordapp.com 162.159.133.233, 443, 49695 CLOUDFLARENETUS United States 21->57 67 Antivirus detection for dropped file 21->67 69 Multi AV Scanner detection for dropped file 21->69 71 Obfuscated command line found 21->71 73 2 other signatures 21->73 33 powershell.exe 17 21->33         started        35 schtasks.exe 1 21->35         started        37 schtasks.exe 1 21->37         started        39 2 other processes 21->39 signatures9 process10 process11 41 conhost.exe 33->41         started        43 conhost.exe 35->43         started        45 conhost.exe 37->45         started        47 conhost.exe 39->47         started        49 conhost.exe 39->49         started       
Threat name:
ByteCode-MSIL.Backdoor.Crysan
Status:
Malicious
First seen:
2023-01-12 16:32:28 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
1
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  8/10
Tags:
evasion persistence
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Views/modifies file attributes
Enumerates physical storage devices
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Sets file to hidden
Unpacked files
SH256 hash:
40cb5b00771d8e3978a44781777e21d92b7d6923cb33a05dd8628220ca25b9fa
MD5 hash:
20568d77c88a9b0f9c341f7c78b019d7
SHA1 hash:
b96d05322cf712a3c7cb921ff012e880e95917e6
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


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

Web download

AsyncRAT

Executable exe 40cb5b00771d8e3978a44781777e21d92b7d6923cb33a05dd8628220ca25b9fa

(this sample)

  
Delivery method
Distributed via web download

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