| File name: | INSTRUCTIONLETTER63-2025.exe |
| Full analysis: | https://app.any.run/tasks/57c6d291-2f01-40b7-b628-a8aa5743c4d7 |
| Verdict: | Malicious activity |
| Threats: | Agent Tesla is spyware that collects information about the actions of its victims by recording keystrokes and user interactions. It is falsely marketed as a legitimate software on the dedicated website where this malware is sold. |
| Analysis date: | March 25, 2025, 03:40:58 |
| 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: | 1CE4EEC150B3F140F72CE0DDCAD39337 |
| SHA1: | E5FB09B22C4C04025281DA6661D7C895D7D496A9 |
| SHA256: | 2A64D3212309DA646F5EF8210F6B8966C7A63CE82CB5BBD3C03838DD296BADCF |
| SSDEEP: | 49152:95akkiigYtI295TAChHWvd8GXW8Q7c1qWrW43ggZmzlrRemteQvkuyWhc6d1S0Dt:95h5iNfTnhHGyL8Q7ZWrWeg4mz73tRk2 |
| .exe | | | Generic CIL Executable (.NET, Mono, etc.) (56.7) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (21.3) |
| .scr | | | Windows screen saver (10.1) |
| .dll | | | Win32 Dynamic Link Library (generic) (5) |
| .exe | | | Win32 Executable (generic) (3.4) |
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2025:03:24 21:50:21+00:00 |
| ImageFileCharacteristics: | Executable, No line numbers, No symbols, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 8 |
| CodeSize: | 1315840 |
| InitializedDataSize: | 2048 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x14329e |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 1.0.0.0 |
| ProductVersionNumber: | 1.0.0.0 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | Neutral |
| CharacterSet: | Unicode |
| Comments: | - |
| CompanyName: | - |
| FileDescription: | Dlnfcrr |
| FileVersion: | 1.0.0.0 |
| InternalName: | Dlnfcrr.exe |
| LegalCopyright: | Copyright © 2016 |
| LegalTrademarks: | - |
| OriginalFileName: | Dlnfcrr.exe |
| ProductName: | Dlnfcrr |
| ProductVersion: | 1.0.0.0 |
| AssemblyVersion: | 1.0.0.0 |
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5072 | "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | explorer.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: .NET Framework installation utility Version: 4.8.9037.0 built by: NET481REL1 Modules
AgentTesla(PID) Process(5072) InstallUtil.exe Protocolsmtp Hostmail.iaa-airferight.com Port25 Usernameclassic@iaa-airferight.com PasswordBIGNAIRA2024 | |||||||||||||||
| 5968 | 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
| |||||||||||||||
| 7564 | "C:\Users\admin\Desktop\INSTRUCTIONLETTER63-2025.exe" | C:\Users\admin\Desktop\INSTRUCTIONLETTER63-2025.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: Dlnfcrr Exit code: 4294967295 Version: 1.0.0.0 Modules
| |||||||||||||||
| 7800 | "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | explorer.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: .NET Framework installation utility Exit code: 4294967295 Version: 4.8.9037.0 built by: NET481REL1 Modules
AgentTesla(PID) Process(7800) InstallUtil.exe Protocolsmtp Hostmail.iaa-airferight.com Port25 Usernameclassic@iaa-airferight.com PasswordBIGNAIRA2024 | |||||||||||||||
| 7928 | "C:\WINDOWS\System32\WScript.exe" "C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Keywords.vbs" | 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: 5.812.10240.16384 Modules
| |||||||||||||||
| 7980 | "C:\Users\admin\AppData\Roaming\Keywords.exe" | C:\Users\admin\AppData\Roaming\Keywords.exe | — | wscript.exe | |||||||||||
User: admin Integrity Level: MEDIUM Description: Dlnfcrr Exit code: 4294967295 Version: 1.0.0.0 Modules
| |||||||||||||||
| (PID) Process: | (7800) InstallUtil.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\InstallUtil_RASAPI32 |
| Operation: | write | Name: | EnableFileTracing |
Value: 0 | |||
| (PID) Process: | (7800) InstallUtil.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\InstallUtil_RASAPI32 |
| Operation: | write | Name: | EnableAutoFileTracing |
Value: 0 | |||
| (PID) Process: | (7800) InstallUtil.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\InstallUtil_RASAPI32 |
| Operation: | write | Name: | EnableConsoleTracing |
Value: 0 | |||
| (PID) Process: | (7800) InstallUtil.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\InstallUtil_RASAPI32 |
| Operation: | write | Name: | FileTracingMask |
Value: | |||
| (PID) Process: | (7800) InstallUtil.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\InstallUtil_RASAPI32 |
| Operation: | write | Name: | ConsoleTracingMask |
Value: | |||
| (PID) Process: | (7800) InstallUtil.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\InstallUtil_RASAPI32 |
| Operation: | write | Name: | MaxFileSize |
Value: 1048576 | |||
| (PID) Process: | (7800) InstallUtil.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\InstallUtil_RASAPI32 |
| Operation: | write | Name: | FileDirectory |
Value: %windir%\tracing | |||
| (PID) Process: | (7800) InstallUtil.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\InstallUtil_RASMANCS |
| Operation: | write | Name: | EnableFileTracing |
Value: 0 | |||
| (PID) Process: | (7800) InstallUtil.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\InstallUtil_RASMANCS |
| Operation: | write | Name: | EnableAutoFileTracing |
Value: 0 | |||
| (PID) Process: | (7800) InstallUtil.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\InstallUtil_RASMANCS |
| Operation: | write | Name: | EnableConsoleTracing |
Value: 0 | |||
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 7564 | INSTRUCTIONLETTER63-2025.exe | C:\Users\admin\AppData\Roaming\Keywords.exe | executable | |
MD5:1CE4EEC150B3F140F72CE0DDCAD39337 | SHA256:2A64D3212309DA646F5EF8210F6B8966C7A63CE82CB5BBD3C03838DD296BADCF | |||
| 7564 | INSTRUCTIONLETTER63-2025.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Keywords.vbs | text | |
MD5:D360A32975E1150FEC5DB07597A19052 | SHA256:3BA68535BE0D4B591491DC7FC2D5F0040C5137946568AA33DE49F1772A215851 | |||
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
2104 | svchost.exe | GET | 200 | 23.216.77.28:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
— | — | GET | 200 | 104.26.13.205:443 | https://api.ipify.org/ | unknown | text | 14 b | malicious |
— | — | GET | 200 | 172.67.74.152:443 | https://api.ipify.org/ | unknown | text | 14 b | malicious |
— | — | POST | 500 | 40.91.76.224:443 | https://activation-v2.sls.microsoft.com/SLActivateProduct/SLActivateProduct.asmx?configextension=Retail | unknown | xml | 512 b | whitelisted |
— | — | POST | 500 | 40.91.76.224:443 | https://activation-v2.sls.microsoft.com/SLActivateProduct/SLActivateProduct.asmx?configextension=Retail | unknown | xml | 512 b | whitelisted |
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
— | — | 4.231.128.59:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
2104 | svchost.exe | 4.231.128.59:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
2104 | svchost.exe | 23.216.77.28:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
2104 | svchost.exe | 51.104.136.2:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
7800 | InstallUtil.exe | 104.26.12.205:443 | api.ipify.org | CLOUDFLARENET | US | shared |
7800 | InstallUtil.exe | 46.175.148.58:25 | mail.iaa-airferight.com | Serverius Holding B.V. | NL | malicious |
5072 | InstallUtil.exe | 104.26.12.205:443 | api.ipify.org | CLOUDFLARENET | US | shared |
5072 | InstallUtil.exe | 46.175.148.58:25 | mail.iaa-airferight.com | Serverius Holding B.V. | NL | malicious |
Domain | IP | Reputation |
|---|---|---|
google.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
settings-win.data.microsoft.com |
| whitelisted |
api.ipify.org |
| shared |
mail.iaa-airferight.com |
| malicious |
activation-v2.sls.microsoft.com |
| whitelisted |
PID | Process | Class | Message |
|---|---|---|---|
7800 | InstallUtil.exe | Potential Corporate Privacy Violation | ET INFO Possible IP Check api.ipify.org |
7800 | InstallUtil.exe | Misc activity | ET INFO External IP Address Lookup Domain (ipify .org) in TLS SNI |
2196 | svchost.exe | Misc activity | ET INFO External IP Lookup Domain (ipify .org) in DNS Lookup |
— | — | Device Retrieving External IP Address Detected | ET INFO External IP Lookup api.ipify.org |
— | — | Device Retrieving External IP Address Detected | POLICY [ANY.RUN] External IP Lookup by HTTP (api .ipify .org) |
— | — | Device Retrieving External IP Address Detected | SUSPICIOUS [ANY.RUN] An IP address was received from the server as a result of an HTTP request |
5072 | InstallUtil.exe | Potential Corporate Privacy Violation | ET INFO Possible IP Check api.ipify.org |
5072 | InstallUtil.exe | Misc activity | ET INFO External IP Address Lookup Domain (ipify .org) in TLS SNI |
— | — | Device Retrieving External IP Address Detected | POLICY [ANY.RUN] External IP Lookup by HTTP (api .ipify .org) |
— | — | Device Retrieving External IP Address Detected | ET INFO External IP Lookup api.ipify.org |