| File name: | dwmf.exe |
| Full analysis: | https://app.any.run/tasks/3d24d395-cff4-418b-93b0-9d3e136f2296 |
| Verdict: | Malicious activity |
| Threats: | njRAT is a remote access trojan. It is one of the most widely accessible RATs on the market that features an abundance of educational information. Interested attackers can even find tutorials on YouTube. This allows it to become one of the most popular RATs in the world. |
| Analysis date: | March 22, 2024, 03:55:31 |
| 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: | B3C659D3B1597458D42F1D49C8936A16 |
| SHA1: | 09AED6A1B7FAF2E2D19015C39A1CA46CC93E9743 |
| SHA256: | EDE71761662371BB60F4393746E0C1A2E2DAA3A3BE3C23D6ECFE715C110F0831 |
| SSDEEP: | 768:OswM4S0wv/6QxLjMw2TwGtY+bFqlJsWaGuHYGsDOeri45quE1e:O/YH6QxXlGOQyCW1uHYGsDOer/5qN4 |
MALICIOUS
Drops the executable file immediately after the start
- dwmf.exe (PID: 2120)
- dwm.exe (PID: 2856)
NjRAT is detected
- dwmf.exe (PID: 2120)
- dwm.exe (PID: 2856)
Create files in the Startup directory
- dwm.exe (PID: 2856)
Connects to the CnC server
- dwm.exe (PID: 2856)
NJRAT has been detected (SURICATA)
- dwm.exe (PID: 2856)
Changes the autorun value in the registry
- dwm.exe (PID: 2856)
Changes appearance of the Explorer extensions
- dwm.exe (PID: 2856)
SUSPICIOUS
Reads the Internet Settings
- dwmf.exe (PID: 2120)
Executable content was dropped or overwritten
- dwmf.exe (PID: 2120)
- dwm.exe (PID: 2856)
Reads security settings of Internet Explorer
- dwmf.exe (PID: 2120)
Starts itself from another location
- dwmf.exe (PID: 2120)
Uses NETSH.EXE to add a firewall rule or allowed programs
- dwm.exe (PID: 2856)
Connects to unusual port
- dwm.exe (PID: 2856)
INFO
Checks supported languages
- dwmf.exe (PID: 2120)
- dwm.exe (PID: 2856)
- wmpnscfg.exe (PID: 4044)
Reads the computer name
- dwmf.exe (PID: 2120)
- dwm.exe (PID: 2856)
- wmpnscfg.exe (PID: 4044)
Reads the machine GUID from the registry
- dwmf.exe (PID: 2120)
- dwm.exe (PID: 2856)
Creates files in the program directory
- dwmf.exe (PID: 2120)
Reads Environment values
- dwm.exe (PID: 2856)
Manual execution by a user
- wmpnscfg.exe (PID: 4044)
Creates files or folders in the user directory
- dwm.exe (PID: 2856)
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: | 2024:03:22 03:54:37+00:00 |
| ImageFileCharacteristics: | Executable, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 8 |
| CodeSize: | 35328 |
| InitializedDataSize: | 13312 |
| UninitializedDataSize: | - |
| EntryPoint: | 0xa94e |
| 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 |
| FileDescription: | stb |
| FileVersion: | 1.0.0.0 |
| InternalName: | stub.exe |
| LegalCopyright: | Copyright © 2018 |
| OriginalFileName: | stub.exe |
| ProductName: | stb |
| ProductVersion: | 1.0.0.0 |
| AssemblyVersion: | 1.0.0.0 |
Total processes
41
Monitored processes
4
Malicious processes
2
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2120 | "C:\Users\admin\AppData\Local\Temp\dwmf.exe" | C:\Users\admin\AppData\Local\Temp\dwmf.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: stb Exit code: 4294967295 Version: 1.0.0.0 Modules
| |||||||||||||||
| 2420 | netsh firewall add allowedprogram "C:\ProgramData\dwm.exe" "dwm.exe" ENABLE | C:\Windows\System32\netsh.exe | — | dwm.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Network Command Shell Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 2856 | "C:\ProgramData\dwm.exe" | C:\ProgramData\dwm.exe | dwmf.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: stb Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| 4044 | "C:\Program Files\Windows Media Player\wmpnscfg.exe" | C:\Program Files\Windows Media Player\wmpnscfg.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Media Player Network Sharing Service Configuration Application Exit code: 0 Version: 12.0.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
Total events
1 942
Read events
1 814
Write events
128
Delete events
0
Modification events
| (PID) Process: | (2120) dwmf.exe | Key: | HKEY_CURRENT_USER\Software\f679cdba59ffb2387a5c64ce471bee23 |
| Operation: | write | Name: | hp |
Value: a2l5b3UuZGRucy5uZXQ6MTE3Nyw= | |||
| (PID) Process: | (2120) dwmf.exe | Key: | HKEY_CURRENT_USER\Software\f679cdba59ffb2387a5c64ce471bee23 |
| Operation: | write | Name: | i |
Value: ! | |||
| (PID) Process: | (2120) dwmf.exe | Key: | HKEY_CURRENT_USER |
| Operation: | write | Name: | di |
Value: ! | |||
| (PID) Process: | (2120) dwmf.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | ProxyBypass |
Value: 1 | |||
| (PID) Process: | (2120) dwmf.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | IntranetName |
Value: 1 | |||
| (PID) Process: | (2120) dwmf.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 1 | |||
| (PID) Process: | (2120) dwmf.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 0 | |||
| (PID) Process: | (2856) dwm.exe | Key: | HKEY_CURRENT_USER\Software\f679cdba59ffb2387a5c64ce471bee23 |
| Operation: | write | Name: | hp |
Value: a2l5b3UuZGRucy5uZXQ6MTE3Nyw= | |||
| (PID) Process: | (2856) dwm.exe | Key: | HKEY_CURRENT_USER\Software\f679cdba59ffb2387a5c64ce471bee23 |
| Operation: | write | Name: | i |
Value: ! | |||
| (PID) Process: | (2856) dwm.exe | Key: | HKEY_CURRENT_USER |
| Operation: | write | Name: | di |
Value: ! | |||
Executable files
2
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2120 | dwmf.exe | C:\ProgramData\dwm.exe | executable | |
MD5:B3C659D3B1597458D42F1D49C8936A16 | SHA256:EDE71761662371BB60F4393746E0C1A2E2DAA3A3BE3C23D6ECFE715C110F0831 | |||
| 2856 | dwm.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\f679cdba59ffb2387a5c64ce471bee23.exe | executable | |
MD5:B3C659D3B1597458D42F1D49C8936A16 | SHA256:EDE71761662371BB60F4393746E0C1A2E2DAA3A3BE3C23D6ECFE715C110F0831 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
5
DNS requests
1
Threats
24
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 |
|---|---|---|---|---|---|---|
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
1080 | svchost.exe | 224.0.0.252:5355 | — | — | — | unknown |
2856 | dwm.exe | 105.159.16.242:1177 | kiyou.ddns.net | MT-MPLS | MA | unknown |
DNS requests
Domain | IP | Reputation |
|---|---|---|
kiyou.ddns.net |
| unknown |
Threats
PID | Process | Class | Message |
|---|---|---|---|
1080 | svchost.exe | Potentially Bad Traffic | ET POLICY DNS Query to DynDNS Domain *.ddns .net |
23 ETPRO signatures available at the full report