| File name: | ac1fb53266e141a5485c098c1bc7d103113b646630c7165519cf132d44ff3fad.exe |
| Full analysis: | https://app.any.run/tasks/751f3dec-4c94-4ca3-b144-6a500782e87a |
| Verdict: | Malicious activity |
| Threats: | A backdoor is a type of cybersecurity threat that allows attackers to secretly compromise a system and conduct malicious activities, such as stealing data and modifying files. Backdoors can be difficult to detect, as they often use legitimate system applications to evade defense mechanisms. Threat actors often utilize special malware, such as PlugX, to establish backdoors on target devices. |
| Analysis date: | May 15, 2025, 10:48:15 |
| 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: | D2FCE7D2824FA015231FA1097043A5F8 |
| SHA1: | F9BF9A156992C85EF9291CC1A406F3F644BDF3B6 |
| SHA256: | FA21EA2208ECC3490DFB95B4BE1BD4ED78108956D9897B69564125E92349687C |
| SSDEEP: | 768:4rTyu/MiO+pJBQp0hSz3T6sLNdeH1cVtsnY8/o3J:aTdMiO+pJBQyhSz3TXU1OtsnY8Q3 |
MALICIOUS
NJRAT has been detected (YARA)
- ac1fb53266e141a5485c098c1bc7d103113b646630c7165519cf132d44ff3fad.exe (PID: 7520)
Create files in the Startup directory
- Dllhost.exe (PID: 7804)
Uses Task Scheduler to run other applications
- Dllhost.exe (PID: 7804)
Changes the autorun value in the registry
- Dllhost.exe (PID: 7804)
NJRAT has been detected (SURICATA)
- Dllhost.exe (PID: 7804)
Connects to the CnC server
- Dllhost.exe (PID: 7804)
SUSPICIOUS
Reads security settings of Internet Explorer
- ac1fb53266e141a5485c098c1bc7d103113b646630c7165519cf132d44ff3fad.exe (PID: 7520)
The process creates files with name similar to system file names
- ac1fb53266e141a5485c098c1bc7d103113b646630c7165519cf132d44ff3fad.exe (PID: 7520)
Executable content was dropped or overwritten
- ac1fb53266e141a5485c098c1bc7d103113b646630c7165519cf132d44ff3fad.exe (PID: 7520)
- Dllhost.exe (PID: 7804)
Starts itself from another location
- ac1fb53266e141a5485c098c1bc7d103113b646630c7165519cf132d44ff3fad.exe (PID: 7520)
Contacting a server suspected of hosting an CnC
- Dllhost.exe (PID: 7804)
Connects to unusual port
- Dllhost.exe (PID: 7804)
The process executes via Task Scheduler
- Server.exe (PID: 7516)
INFO
Checks supported languages
- ac1fb53266e141a5485c098c1bc7d103113b646630c7165519cf132d44ff3fad.exe (PID: 7520)
- Dllhost.exe (PID: 7804)
- Server.exe (PID: 7516)
Reads the computer name
- ac1fb53266e141a5485c098c1bc7d103113b646630c7165519cf132d44ff3fad.exe (PID: 7520)
- Dllhost.exe (PID: 7804)
- Server.exe (PID: 7516)
Create files in a temporary directory
- ac1fb53266e141a5485c098c1bc7d103113b646630c7165519cf132d44ff3fad.exe (PID: 7520)
- Dllhost.exe (PID: 7804)
Process checks computer location settings
- ac1fb53266e141a5485c098c1bc7d103113b646630c7165519cf132d44ff3fad.exe (PID: 7520)
Creates files or folders in the user directory
- Dllhost.exe (PID: 7804)
Reads the machine GUID from the registry
- Dllhost.exe (PID: 7804)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .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) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2025:05:02 04:08:59+00:00 |
| ImageFileCharacteristics: | Executable, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 8 |
| CodeSize: | 41984 |
| InitializedDataSize: | 1536 |
| UninitializedDataSize: | - |
| EntryPoint: | 0xc35e |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
Total processes
133
Monitored processes
7
Malicious processes
2
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 7516 | "C:\Users\admin\AppData\Local\Temp/Server.exe" | C:\Users\admin\AppData\Local\Temp\Server.exe | — | svchost.exe | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 7520 | "C:\Users\admin\AppData\Local\Temp\ac1fb53266e141a5485c098c1bc7d103113b646630c7165519cf132d44ff3fad.exe" | C:\Users\admin\AppData\Local\Temp\ac1fb53266e141a5485c098c1bc7d103113b646630c7165519cf132d44ff3fad.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 7568 | 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 Version: 10.0.19041.3996 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 7612 | "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 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 7804 | "C:\Users\admin\AppData\Local\Temp\Dllhost.exe" | C:\Users\admin\AppData\Local\Temp\Dllhost.exe | ac1fb53266e141a5485c098c1bc7d103113b646630c7165519cf132d44ff3fad.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Modules
| |||||||||||||||
| 8100 | schtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\admin\AppData\Local\Temp/Server.exe | C:\Windows\SysWOW64\schtasks.exe | — | Dllhost.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Task Scheduler Configuration Tool Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 8108 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | schtasks.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Console Window Host Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
Total events
1 147
Read events
1 115
Write events
32
Delete events
0
Modification events
| (PID) Process: | (7804) Dllhost.exe | Key: | HKEY_CURRENT_USER\Environment |
| Operation: | write | Name: | SEE_MASK_NOZONECHECKS |
Value: 1 | |||
| (PID) Process: | (7804) Dllhost.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | Google Driver |
Value: "C:\Users\admin\AppData\Local\Temp\Dllhost.exe" .. | |||
Executable files
3
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 7520 | ac1fb53266e141a5485c098c1bc7d103113b646630c7165519cf132d44ff3fad.exe | C:\Users\admin\AppData\Local\Temp\Dllhost.exe | executable | |
MD5:D2FCE7D2824FA015231FA1097043A5F8 | SHA256:FA21EA2208ECC3490DFB95B4BE1BD4ED78108956D9897B69564125E92349687C | |||
| 7804 | Dllhost.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Google Driver.exe | executable | |
MD5:D2FCE7D2824FA015231FA1097043A5F8 | SHA256:FA21EA2208ECC3490DFB95B4BE1BD4ED78108956D9897B69564125E92349687C | |||
| 7804 | Dllhost.exe | C:\Users\admin\AppData\Local\Temp\Server.exe | executable | |
MD5:D2FCE7D2824FA015231FA1097043A5F8 | SHA256:FA21EA2208ECC3490DFB95B4BE1BD4ED78108956D9897B69564125E92349687C | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
5
TCP/UDP connections
21
DNS requests
14
Threats
4
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
— | — | GET | 200 | 23.48.23.156:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
— | — | GET | 200 | 95.101.149.131:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
6544 | svchost.exe | GET | 200 | 2.17.190.73:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
2140 | 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 |
2140 | 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 |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
2104 | svchost.exe | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
— | — | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
— | — | 23.48.23.156:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
— | — | 95.101.149.131:80 | www.microsoft.com | Akamai International B.V. | NL | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
3216 | svchost.exe | 172.211.123.248:443 | client.wns.windows.com | MICROSOFT-CORP-MSN-AS-BLOCK | FR | whitelisted |
6544 | svchost.exe | 40.126.31.2:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
6544 | svchost.exe | 2.17.190.73:80 | ocsp.digicert.com | AKAMAI-AS | DE | whitelisted |
2112 | svchost.exe | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
client.wns.windows.com |
| whitelisted |
login.live.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
slscr.update.microsoft.com |
| whitelisted |
fe3cr.delivery.mp.microsoft.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
7804 | Dllhost.exe | Misc Attack | ET DROP Spamhaus DROP Listed Traffic Inbound group 14 |
7804 | Dllhost.exe | Misc activity | ET INFO Possible Host Profile Exfiltration In Pipe Delimited Format |
7804 | Dllhost.exe | Malware Command and Control Activity Detected | ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll) |
7804 | Dllhost.exe | Malware Command and Control Activity Detected | BACKDOOR [ANY.RUN] njRAT Bladabindi CnC Communication command ll |