| File name: | NOTEPAD.exe |
| Full analysis: | https://app.any.run/tasks/b2bf07b3-637e-4476-94bd-7d57f450a525 |
| 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. |
| Analysis date: | April 15, 2025, 19:36:52 |
| OS: | Windows 10 Professional (build: 19044, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/vnd.microsoft.portable-executable |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows, 3 sections |
| MD5: | 358798D21F56B50374A8D8304783E881 |
| SHA1: | 6685C3D0D86966A5552AB1786EC4F289DB98A16C |
| SHA256: | 8912C96A3242C4D17C343100C936F07E51C7E049A53E086500571A91970641AD |
| SSDEEP: | 384:DbTeH18yV/rekegvG9FV5zynS1heVuZZYjlu15ma/9vm9auXC7jZSjnrzheUrphU:DXeVl/reke79FDzynSzrAauCcrJNVeP |
MALICIOUS
Executing a file with an untrusted certificate
- NOTEPAD.exe (PID: 6640)
- NOTEPAD.exe (PID: 6708)
Create files in the Startup directory
- NOTEPAD.exe (PID: 6640)
ASYNCRAT has been detected (YARA)
- NOTEPAD.exe (PID: 6708)
DCRAT mutex has been found
- NOTEPAD.exe (PID: 6708)
SUSPICIOUS
The process creates files with name similar to system file names
- NOTEPAD.exe (PID: 6640)
Executable content was dropped or overwritten
- NOTEPAD.exe (PID: 6640)
Connects to the server without a host name
- NOTEPAD.exe (PID: 6640)
Connects to unusual port
- NOTEPAD.exe (PID: 6708)
INFO
Disables trace logs
- NOTEPAD.exe (PID: 6640)
Reads the machine GUID from the registry
- NOTEPAD.exe (PID: 6640)
- NOTEPAD.exe (PID: 6708)
Reads the computer name
- NOTEPAD.exe (PID: 6640)
- NOTEPAD.exe (PID: 6708)
Checks supported languages
- NOTEPAD.exe (PID: 6640)
- NOTEPAD.exe (PID: 6708)
Creates files or folders in the user directory
- NOTEPAD.exe (PID: 6640)
Checks proxy server information
- NOTEPAD.exe (PID: 6640)
- slui.exe (PID: 3156)
Manual execution by a user
- NOTEPAD.exe (PID: 6708)
Reads the software policy settings
- slui.exe (PID: 5008)
- slui.exe (PID: 3156)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
AsyncRat
(PID) Process(6708) NOTEPAD.exe
C2 (1)fidodido.ddns.net
Ports (1)4545
Version1.0.7
Options
AutoRunfalse
MutexDcRatMutex_qwqdanchun
InstallFolder%AppData%
Certificates
Cert1MIICJzCCAZCgAwIBAgIVANWkW/DwRfI1qxKTvr4H2UEJm+4nMA0GCSqGSIb3DQEBDQUAMFsxDDAKBgNVBAMMA3BvcDETMBEGA1UECwwKcXdxZGFuY2h1bjEcMBoGA1UECgwTRGNSYXQgQnkgcXdxZGFuY2h1bjELMAkGA1UEBwwCU0gxCzAJBgNVBAYTAkNOMB4XDTI0MDcwMjEzMjQ1MVoXDTM1MDQxMTEzMjQ1MVowEDEOMAwGA1UEAwwFRGNSYXQwgZ8wDQYJKoZIhvcNAQEBBQADgY0AMIGJAoGBAJRx...
Server_SignatureLZ9D/J3PrXOEdalU4HOfq4hFMlyM4yzOqt2/5jkVL6I3D3rugMLj7RDXmygM7FdkRP3Z65Uc9e/ooL2rWLmxFw5GsbC1/EIKLUQpPcSByTwU4T4npA+gZgfKhDETiTtWU2mj4m/iHBpOaNIa6H9lGXT/NTFThYmMynL9FOdbKks=
Keys
AES8fcdf99079b0504d5311fb91ef8d2614ae12c6a58fdd6ce418723014317f993f
SaltDcRatByqwqdanchun
TRiD
| .dll | | | Win32 Dynamic Link Library (generic) (43.5) |
|---|---|---|
| .exe | | | Win32 Executable (generic) (29.8) |
| .exe | | | Generic Win/DOS Executable (13.2) |
| .exe | | | DOS Executable Generic (13.2) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2025:04:13 21:45:21+00:00 |
| ImageFileCharacteristics: | Executable, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 8 |
| CodeSize: | 19968 |
| InitializedDataSize: | 2048 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x6dce |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 1.0.6227.727 |
| ProductVersionNumber: | 1.0.6227.727 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | Neutral |
| CharacterSet: | Unicode |
| Comments: | - |
| CompanyName: | - |
| FileDescription: | Pepxwsbgo |
| FileVersion: | 1.0.6227.727 |
| InternalName: | Pepxwsbgo.exe |
| LegalCopyright: | Copyright © 2015 |
| LegalTrademarks: | - |
| OriginalFileName: | Pepxwsbgo.exe |
| ProductName: | Pepxwsbgo |
| ProductVersion: | 1.0.6227.727 |
| AssemblyVersion: | 1.0.9133.6032 |
Total processes
136
Monitored processes
6
Malicious processes
2
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 896 | C:\WINDOWS\system32\SppExtComObj.exe -Embedding | C:\Windows\System32\SppExtComObj.Exe | — | svchost.exe | |||||||||||
User: NETWORK SERVICE Company: Microsoft Corporation Integrity Level: SYSTEM Description: KMS Connection Broker Exit code: 0 Version: 10.0.19041.3996 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2196 | C:\WINDOWS\system32\svchost.exe -k NetworkService -p -s Dnscache | C:\Windows\System32\svchost.exe | services.exe | ||||||||||||
User: NETWORK SERVICE Company: Microsoft Corporation Integrity Level: SYSTEM Description: Host Process for Windows Services Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 3156 | C:\WINDOWS\System32\slui.exe -Embedding | C:\Windows\System32\slui.exe | svchost.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Activation Client Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 5008 | "C:\WINDOWS\System32\SLUI.exe" RuleId=3482d82e-ca2c-4e1f-8864-da0267b484b2;Action=AutoActivate;AppId=55c92734-d682-4d71-983e-d6ec3f16059f;SkuId=4de7cb65-cdf1-4de9-8ae8-e3cce27b9f2c;NotificationInterval=1440;Trigger=TimerEvent | C:\Windows\System32\slui.exe | SppExtComObj.Exe | ||||||||||||
User: NETWORK SERVICE Company: Microsoft Corporation Integrity Level: SYSTEM Description: Windows Activation Client Exit code: 1 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 6640 | "C:\Users\admin\AppData\Local\Temp\NOTEPAD.exe" | C:\Users\admin\AppData\Local\Temp\NOTEPAD.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: Pepxwsbgo Exit code: 4294967295 Version: 1.0.6227.727 Modules
| |||||||||||||||
| 6708 | "C:\Users\admin\AppData\Local\Temp\NOTEPAD.exe" | C:\Users\admin\AppData\Local\Temp\NOTEPAD.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: Pepxwsbgo Version: 1.0.6227.727 Modules
AsyncRat(PID) Process(6708) NOTEPAD.exe C2 (1)fidodido.ddns.net Ports (1)4545 Version1.0.7 Options AutoRunfalse MutexDcRatMutex_qwqdanchun InstallFolder%AppData% Certificates Cert1MIICJzCCAZCgAwIBAgIVANWkW/DwRfI1qxKTvr4H2UEJm+4nMA0GCSqGSIb3DQEBDQUAMFsxDDAKBgNVBAMMA3BvcDETMBEGA1UECwwKcXdxZGFuY2h1bjEcMBoGA1UECgwTRGNSYXQgQnkgcXdxZGFuY2h1bjELMAkGA1UEBwwCU0gxCzAJBgNVBAYTAkNOMB4XDTI0MDcwMjEzMjQ1MVoXDTM1MDQxMTEzMjQ1MVowEDEOMAwGA1UEAwwFRGNSYXQwgZ8wDQYJKoZIhvcNAQEBBQADgY0AMIGJAoGBAJRx... Server_SignatureLZ9D/J3PrXOEdalU4HOfq4hFMlyM4yzOqt2/5jkVL6I3D3rugMLj7RDXmygM7FdkRP3Z65Uc9e/ooL2rWLmxFw5GsbC1/EIKLUQpPcSByTwU4T4npA+gZgfKhDETiTtWU2mj4m/iHBpOaNIa6H9lGXT/NTFThYmMynL9FOdbKks= Keys AES8fcdf99079b0504d5311fb91ef8d2614ae12c6a58fdd6ce418723014317f993f SaltDcRatByqwqdanchun | |||||||||||||||
Total events
2 229
Read events
2 215
Write events
14
Delete events
0
Modification events
| (PID) Process: | (6640) NOTEPAD.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\NOTEPAD_RASAPI32 |
| Operation: | write | Name: | EnableFileTracing |
Value: 0 | |||
| (PID) Process: | (6640) NOTEPAD.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\NOTEPAD_RASAPI32 |
| Operation: | write | Name: | EnableAutoFileTracing |
Value: 0 | |||
| (PID) Process: | (6640) NOTEPAD.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\NOTEPAD_RASAPI32 |
| Operation: | write | Name: | EnableConsoleTracing |
Value: 0 | |||
| (PID) Process: | (6640) NOTEPAD.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\NOTEPAD_RASAPI32 |
| Operation: | write | Name: | FileTracingMask |
Value: | |||
| (PID) Process: | (6640) NOTEPAD.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\NOTEPAD_RASAPI32 |
| Operation: | write | Name: | ConsoleTracingMask |
Value: | |||
| (PID) Process: | (6640) NOTEPAD.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\NOTEPAD_RASAPI32 |
| Operation: | write | Name: | MaxFileSize |
Value: 1048576 | |||
| (PID) Process: | (6640) NOTEPAD.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\NOTEPAD_RASAPI32 |
| Operation: | write | Name: | FileDirectory |
Value: %windir%\tracing | |||
| (PID) Process: | (6640) NOTEPAD.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\NOTEPAD_RASMANCS |
| Operation: | write | Name: | EnableFileTracing |
Value: 0 | |||
| (PID) Process: | (6640) NOTEPAD.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\NOTEPAD_RASMANCS |
| Operation: | write | Name: | EnableAutoFileTracing |
Value: 0 | |||
| (PID) Process: | (6640) NOTEPAD.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\NOTEPAD_RASMANCS |
| Operation: | write | Name: | EnableConsoleTracing |
Value: 0 | |||
Executable files
1
Suspicious files
0
Text files
1
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 6640 | NOTEPAD.exe | C:\Users\admin\AppData\Roaming\NOTEPAD.exe | executable | |
MD5:358798D21F56B50374A8D8304783E881 | SHA256:0B5EA3334F8C9D43CA5927F78C74BD0D9595CB97E5E4CAACF507C3D1D80678E2 | |||
| 6640 | NOTEPAD.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\NOTEPAD.vbs | text | |
MD5:EF4A2CF84719E18C381EE05D23683656 | SHA256:C6F0809CA5D0FB7B3F8448FF27CAB6E3D92B2A2D86BC5DD0462B28561E7ADE3C | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
6
TCP/UDP connections
35
DNS requests
19
Threats
4
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
— | — | GET | 200 | 2.19.11.120:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
5496 | MoUsoCoreWorker.exe | GET | 200 | 2.19.11.120:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
6640 | NOTEPAD.exe | GET | 200 | 147.45.221.109:80 | http://147.45.221.109/Wcjeaqxsil.dat | unknown | — | — | — |
6544 | svchost.exe | GET | 200 | 2.23.77.188:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
1020 | SIHClient.exe | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl | unknown | — | — | whitelisted |
1020 | SIHClient.exe | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl | unknown | — | — | whitelisted |
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 |
— | — | 51.124.78.146:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
— | — | 2.19.11.120:80 | crl.microsoft.com | Elisa Oyj | NL | whitelisted |
5496 | MoUsoCoreWorker.exe | 2.19.11.120:80 | crl.microsoft.com | Elisa Oyj | NL | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
6640 | NOTEPAD.exe | 147.45.221.109:80 | — | OOO FREEnet Group | RU | unknown |
6544 | svchost.exe | 20.190.159.73:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
6544 | svchost.exe | 2.23.77.188:80 | ocsp.digicert.com | AKAMAI-AS | DE | whitelisted |
6708 | NOTEPAD.exe | 50.28.107.105:4545 | fidodido.ddns.net | LIQUIDWEB | US | malicious |
2104 | svchost.exe | 40.127.240.158:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
login.live.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
fidodido.ddns.net |
| malicious |
slscr.update.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
fe3cr.delivery.mp.microsoft.com |
| whitelisted |
activation-v2.sls.microsoft.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
— | — | Potentially Bad Traffic | ET DYN_DNS DNS Query to DynDNS Domain *.ddns .net |
— | — | Potentially Bad Traffic | ET DYN_DNS DNS Query to DynDNS Domain *.ddns .net |
— | — | Potentially Bad Traffic | ET DYN_DNS DNS Query to DynDNS Domain *.ddns .net |
— | — | Potentially Bad Traffic | ET DYN_DNS DNS Query to DynDNS Domain *.ddns .net |