| File name: | sihost.exe |
| Full analysis: | https://app.any.run/tasks/b4de88e3-597d-4c2a-846e-aa9611f959b7 |
| Verdict: | Malicious activity |
| Threats: | NanoCore is a Remote Access Trojan or RAT. This malware is highly customizable with plugins which allow attackers to tailor its functionality to their needs. Nanocore is created with the .NET framework and it’s available for purchase for just $25 from its “official” website. |
| Analysis date: | December 05, 2023, 20:47:01 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows |
| MD5: | 19230DB458718DF6FA70D9817925AC7A |
| SHA1: | 04EBA42E98B996B5B9E1783E37DE8B45C42D56F4 |
| SHA256: | 3C0512176CBCA3CE1B0ABC5F505A3ABBCD39909C20095D995F019197F42439D3 |
| SSDEEP: | 3072:GzEqV6B1jHa6dtJ10jgvzcgi+oG/j9iaMP2s/HISp9Jzf+hpWavwPJLehxm:GLV6Bta6dtJmakIM5PJr+hz2JGm |
MALICIOUS
Drops the executable file immediately after the start
- sihost.exe (PID: 2920)
NANOCORE has been detected (YARA)
- sihost.exe (PID: 2920)
SUSPICIOUS
Connects to unusual port
- sihost.exe (PID: 2920)
INFO
Reads the computer name
- sihost.exe (PID: 2920)
Checks supported languages
- sihost.exe (PID: 2920)
Process checks are UAC notifies on
- sihost.exe (PID: 2920)
Reads the machine GUID from the registry
- sihost.exe (PID: 2920)
Creates files or folders in the user directory
- sihost.exe (PID: 2920)
Reads Environment values
- sihost.exe (PID: 2920)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
Nanocore
(PID) Process(2920) sihost.exe
KeyboardLoggingTrue
BuildTime2022-05-11 16:57:01.733288
Version1.2.2.0
Mutex48fc9f6c-a1d6-42de-93fe-7ff2a24a16fa
DefaultGroupNew Connections
PrimaryConnectionHosttrustedvpnconnection.anondns.net
BackupConnectionHostwindowsmanager.freemyip.com
ConnectionPort38952
RunOnStartupTrue
RequestElevationFalse
BypassUserAccountControlFalse
ClearZoneIdentifierTrue
ClearAccessControlTrue
SetCriticalProcessTrue
PreventSystemSleepTrue
ActivateAwayModeFalse
EnableDebugModeFalse
RunDelay0
ConnectDelay4000
RestartDelay5000
TimeoutInterval5000
KeepAliveTimeout30000
MutexTimeout5000
LanTimeout2500
WanTimeout8000
BufferSize65535
MaxPacketSize10485760
GCThreshold10485760
TRiD
| .exe | | | Generic CIL Executable (.NET, Mono, etc.) (63.1) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (23.8) |
| .dll | | | Win32 Dynamic Link Library (generic) (5.6) |
| .exe | | | Win32 Executable (generic) (3.8) |
| .exe | | | Generic Win/DOS Executable (1.7) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2015:02:22 01:49:37+01:00 |
| ImageFileCharacteristics: | Executable, No line numbers, No symbols, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 6 |
| CodeSize: | 116736 |
| InitializedDataSize: | 68608 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x1e792 |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
Total processes
36
Monitored processes
1
Malicious processes
1
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2920 | "C:\Users\admin\AppData\Local\Temp\sihost.exe" | C:\Users\admin\AppData\Local\Temp\sihost.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
Nanocore(PID) Process(2920) sihost.exe KeyboardLoggingTrue BuildTime2022-05-11 16:57:01.733288 Version1.2.2.0 Mutex48fc9f6c-a1d6-42de-93fe-7ff2a24a16fa DefaultGroupNew Connections PrimaryConnectionHosttrustedvpnconnection.anondns.net BackupConnectionHostwindowsmanager.freemyip.com ConnectionPort38952 RunOnStartupTrue RequestElevationFalse BypassUserAccountControlFalse ClearZoneIdentifierTrue ClearAccessControlTrue SetCriticalProcessTrue PreventSystemSleepTrue ActivateAwayModeFalse EnableDebugModeFalse RunDelay0 ConnectDelay4000 RestartDelay5000 TimeoutInterval5000 KeepAliveTimeout30000 MutexTimeout5000 LanTimeout2500 WanTimeout8000 BufferSize65535 MaxPacketSize10485760 GCThreshold10485760 | |||||||||||||||
Total events
373
Read events
373
Write events
0
Delete events
0
Modification events
Executable files
1
Suspicious files
0
Text files
1
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2920 | sihost.exe | C:\Users\admin\AppData\Roaming\90059C37-1320-41A4-B58D-2B75A9850D2F\run.dat | text | |
MD5:FF9221ECAB5483864A26B091B490D1C0 | SHA256:9D5518DEB8769DEE13ED74B2381C7265301315CA6328492FA1C50823A7686B4C | |||
| 2920 | sihost.exe | C:\Users\admin\AppData\Roaming\90059C37-1320-41A4-B58D-2B75A9850D2F\TCP Monitor\tcpmon.exe | executable | |
MD5:19230DB458718DF6FA70D9817925AC7A | SHA256:3C0512176CBCA3CE1B0ABC5F505A3ABBCD39909C20095D995F019197F42439D3 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
7
DNS requests
4
Threats
4
HTTP requests
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
2920 | sihost.exe | 107.150.23.184:38952 | trustedvpnconnection.anondns.net | ASN-QUADRANET-GLOBAL | US | unknown |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
2588 | svchost.exe | 239.255.255.250:1900 | — | — | — | whitelisted |
1080 | svchost.exe | 224.0.0.252:5355 | — | — | — | unknown |
DNS requests
Domain | IP | Reputation |
|---|---|---|
trustedvpnconnection.anondns.net |
| unknown |
dns.msftncsi.com |
| shared |
windowsmanager.freemyip.com |
| unknown |
Threats
PID | Process | Class | Message |
|---|---|---|---|
1080 | svchost.exe | Potentially Bad Traffic | ET INFO DYNAMIC_DNS Query to freemyip .com Domain |
1080 | svchost.exe | Potentially Bad Traffic | ET INFO DYNAMIC_DNS Query to freemyip .com Domain |
2 ETPRO signatures available at the full report