| File name: | dnscat2.ps1 |
| Full analysis: | https://app.any.run/tasks/9979e75b-fa88-4a96-ba6d-8339481fbbca |
| Verdict: | Malicious activity |
| Analysis date: | June 28, 2024, 20:27:09 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Indicators: | |
| MIME: | text/plain |
| File info: | ASCII text, with very long lines (65438) |
| MD5: | 16C140FE838340062B9A0D85EBC31F8E |
| SHA1: | 8A7EA087C0FF3BD888C78126726EE3C5F098A8C4 |
| SHA256: | 2FB4CBC451908B1BF8A103DFB284917C045ADD6C47C3ACE1E22F65576F9B8302 |
| SSDEEP: | 6144:XjqvVvXD/5VqC5s/3cymAQf7ZpHZ8+3ltI78a4PgCSFKkqSK+/eS:XjqvVvDh9skfdp58E88a4GFtKk |
MALICIOUS
Dynamically loads an assembly (POWERSHELL)
- powershell.exe (PID: 3384)
Starts Visual C# compiler
- powershell.exe (PID: 3384)
Drops the executable file immediately after the start
- csc.exe (PID: 3204)
- csc.exe (PID: 680)
SUSPICIOUS
Reads the Internet Settings
- powershell.exe (PID: 3384)
Uses base64 encoding (POWERSHELL)
- powershell.exe (PID: 3384)
Uses .NET C# to load dll
- powershell.exe (PID: 3384)
Executable content was dropped or overwritten
- csc.exe (PID: 3204)
- csc.exe (PID: 680)
INFO
Create files in a temporary directory
- csc.exe (PID: 3204)
- cvtres.exe (PID: 3212)
- csc.exe (PID: 680)
- cvtres.exe (PID: 2748)
Checks supported languages
- csc.exe (PID: 3204)
- cvtres.exe (PID: 3212)
- csc.exe (PID: 680)
- cvtres.exe (PID: 2748)
Reads the machine GUID from the registry
- csc.exe (PID: 3204)
- cvtres.exe (PID: 3212)
- csc.exe (PID: 680)
- cvtres.exe (PID: 2748)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
Total processes
43
Monitored processes
5
Malicious processes
1
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 680 | "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\admin\AppData\Local\Temp\1ttujt2d.cmdline" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe | powershell.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Visual C# Command Line Compiler Exit code: 0 Version: 4.8.3761.0 built by: NET48REL1 Modules
| |||||||||||||||
| 2748 | C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\admin\AppData\Local\Temp\RESECEC.tmp" "c:\Users\admin\AppData\Local\Temp\CSCDF39A487663648A4A7BC8B8611D18317.TMP" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe | — | csc.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft® Resource File To COFF Object Conversion Utility Exit code: 0 Version: 14.10.25028.0 built by: VCTOOLSD15RTM Modules
| |||||||||||||||
| 3204 | "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\admin\AppData\Local\Temp\42yj31kh.cmdline" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe | powershell.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Visual C# Command Line Compiler Exit code: 0 Version: 4.8.3761.0 built by: NET48REL1 Modules
| |||||||||||||||
| 3212 | C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\admin\AppData\Local\Temp\RESEC31.tmp" "c:\Users\admin\AppData\Local\Temp\CSC11654D9A98604873B89B208E499BF4CE.TMP" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe | — | csc.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft® Resource File To COFF Object Conversion Utility Exit code: 0 Version: 14.10.25028.0 built by: VCTOOLSD15RTM Modules
| |||||||||||||||
| 3384 | "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" "-file" C:\Users\admin\AppData\Local\Temp\dnscat2.ps1 | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | — | explorer.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
| |||||||||||||||
Total events
6 274
Read events
6 212
Write events
62
Delete events
0
Modification events
| (PID) Process: | (3384) powershell.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\182\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
| (PID) Process: | (3384) powershell.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | ProxyBypass |
Value: 1 | |||
| (PID) Process: | (3384) powershell.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | IntranetName |
Value: 1 | |||
| (PID) Process: | (3384) powershell.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 1 | |||
| (PID) Process: | (3384) powershell.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 0 | |||
Executable files
2
Suspicious files
10
Text files
6
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3204 | csc.exe | C:\Users\admin\AppData\Local\Temp\42yj31kh.out | text | |
MD5:66C4B935BA6BB4D276B01DA6226707F1 | SHA256:C65065F619D54EDEAA03C76E75E0BCFDB111E297821FB1988877B73E999205EC | |||
| 3384 | powershell.exe | C:\Users\admin\AppData\Local\Temp\bwd5qwyh.fqn.ps1 | binary | |
MD5:C4CA4238A0B923820DCC509A6F75849B | SHA256:— | |||
| 3384 | powershell.exe | C:\Users\admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive | dbf | |
MD5:446DD1CF97EABA21CF14D03AEBC79F27 | SHA256:A7DE5177C68A64BD48B36D49E2853799F4EBCFA8E4761F7CC472F333DC5F65CF | |||
| 3204 | csc.exe | C:\Users\admin\AppData\Local\Temp\42yj31kh.dll | executable | |
MD5:78C1024C77C2EEFAB021F5C68037E2EC | SHA256:2D3782855884646890A93B9627125136B877C36CD560AD7ACC48184CBB450A09 | |||
| 3212 | cvtres.exe | C:\Users\admin\AppData\Local\Temp\RESEC31.tmp | binary | |
MD5:C33EC9D00FF69D3C49117A92B18A2281 | SHA256:DA26DE23D205B4F3E0B397CDC5D6DF23FF19C17C2A84856B8314215B65B6F345 | |||
| 3384 | powershell.exe | C:\Users\admin\AppData\Local\Temp\1ttujt2d.0.cs | html | |
MD5:E99B8AF73F03DC05E083E3DB170EEA9A | SHA256:512254A4D6AB3B51872B625177BF966C6DDAD6D78DCDFBD98AAB567939A7DB14 | |||
| 680 | csc.exe | C:\Users\admin\AppData\Local\Temp\1ttujt2d.out | text | |
MD5:72E55A058F2D420CF0374A01DE5C2504 | SHA256:D06CE61DF3C7851179E45118E760C28AD0714E6804975C8966D4AD88A41E8E9B | |||
| 3384 | powershell.exe | C:\Users\admin\AppData\Local\Temp\42yj31kh.cmdline | text | |
MD5:6E61BEF7139124FA3D4C22B097146E23 | SHA256:7769702444BB99674B755277DB8764EF29F7022F0057A8CB5E81C66C814F1326 | |||
| 3204 | csc.exe | C:\Users\admin\AppData\Local\Temp\CSC11654D9A98604873B89B208E499BF4CE.TMP | res | |
MD5:5699E649E1E523D5B029A5C8CB521EBD | SHA256:72BD0420FA4CB363BBAB7071F206047F25C3188EE689AB0B28D3218A569753CE | |||
| 680 | csc.exe | C:\Users\admin\AppData\Local\Temp\CSCDF39A487663648A4A7BC8B8611D18317.TMP | res | |
MD5:6FADDA8DEEE7E08E0B43E74A1996BBED | SHA256:55C63DCEF56C034FB87F6492D543AF0A796A7C9C1C2DD84D9F4F932765A5D0A8 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
4
TCP/UDP connections
11
DNS requests
5
Threats
0
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
1372 | svchost.exe | GET | 304 | 23.50.131.217:80 | http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/disallowedcertstl.cab?33775f6043c93e33 | unknown | — | — | unknown |
1372 | svchost.exe | GET | 200 | 23.52.120.96:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | unknown |
1372 | svchost.exe | GET | 200 | 23.48.23.156:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | unknown |
1060 | svchost.exe | GET | 304 | 23.53.40.49:80 | http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/disallowedcertstl.cab?a9f83325acc8ca75 | unknown | — | — | 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 | 192.168.100.255:137 | — | — | — | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
2564 | svchost.exe | 239.255.255.250:3702 | — | — | — | whitelisted |
1060 | svchost.exe | 224.0.0.252:5355 | — | — | — | unknown |
1372 | svchost.exe | 51.124.78.146:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
1372 | svchost.exe | 23.50.131.217:80 | ctldl.windowsupdate.com | Akamai International B.V. | DE | unknown |
1372 | svchost.exe | 23.48.23.156:80 | crl.microsoft.com | Akamai International B.V. | DE | unknown |
1372 | svchost.exe | 23.52.120.96:80 | www.microsoft.com | AKAMAI-AS | DE | unknown |
1060 | svchost.exe | 23.53.40.49:80 | ctldl.windowsupdate.com | Akamai International B.V. | DE | unknown |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
ctldl.windowsupdate.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |