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| File name: | INFORMACION Y DETALLES DE EL NIT SUSPENDIDO VERIFICACION DIRECION DE IMPUESTOS Y ADUANAS NACIONALES PROCESO DE SUSPENCION#8383939-PDF.exe |
| Full analysis: | https://app.any.run/tasks/cc3e7d75-ee5d-41e0-a084-2549c022ec00 |
| 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: | May 24, 2019, 15:38:04 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows |
| MD5: | 2B114E7736FCB78E5AB6F3EE411F18C2 |
| SHA1: | 0B4C646C000774580A6B068332D680B991DD19C1 |
| SHA256: | A7792A96115A1F7616B30876EA74238A6166A912D5A56CCD81CA945B39A10FD0 |
| SSDEEP: | 24576:RAHnh+eWsN3skA4RV1Hom2KXFmIaBfRpEoNI1TI5:oh+ZkldoPK1XaB/E4B |
MALICIOUS
Loads the Task Scheduler COM API
- schtasks.exe (PID: 3844)
- schtasks.exe (PID: 2600)
Uses Task Scheduler to run other applications
- RegAsm.exe (PID: 2532)
Writes to a start menu file
- RegAsm.exe (PID: 2532)
Connects to CnC server
- RegAsm.exe (PID: 2532)
Application was dropped or rewritten from another process
- RegAsm.exe (PID: 2532)
- RegAsm.exe (PID: 2368)
- RegAsm.exe (PID: 2464)
- RegAsm.exe (PID: 2684)
- RegAsm.exe (PID: 4080)
NJRAT was detected
- RegAsm.exe (PID: 2532)
Changes the autorun value in the registry
- RegAsm.exe (PID: 2532)
SUSPICIOUS
Executable content was dropped or overwritten
- RegAsm.exe (PID: 2532)
Creates files in the user directory
- RegAsm.exe (PID: 2532)
Executed via Task Scheduler
- RegAsm.exe (PID: 2684)
- RegAsm.exe (PID: 2464)
- RegAsm.exe (PID: 4080)
- RegAsm.exe (PID: 2368)
INFO
No info indicators.
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win64 Executable (generic) (64.6) |
|---|---|---|
| .dll | | | Win32 Dynamic Link Library (generic) (15.4) |
| .exe | | | Win32 Executable (generic) (10.5) |
| .exe | | | Generic Win/DOS Executable (4.6) |
| .exe | | | DOS Executable Generic (4.6) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2019:05:24 15:19:27+02:00 |
| PEType: | PE32 |
| LinkerVersion: | 12 |
| CodeSize: | 581632 |
| InitializedDataSize: | 451584 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x2800a |
| OSVersion: | 5.1 |
| ImageVersion: | - |
| SubsystemVersion: | 5.1 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 0.0.0.0 |
| ProductVersionNumber: | 0.0.0.0 |
| FileFlagsMask: | 0x0000 |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | English (British) |
| CharacterSet: | Unicode |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 24-May-2019 13:19:27 |
| Detected languages: |
|
DOS Header
| Magic number: | MZ |
|---|---|
| Bytes on last page of file: | 0x0090 |
| Pages in file: | 0x0003 |
| Relocations: | 0x0000 |
| Size of header: | 0x0004 |
| Min extra paragraphs: | 0x0000 |
| Max extra paragraphs: | 0xFFFF |
| Initial SS value: | 0x0000 |
| Initial SP value: | 0x00B8 |
| Checksum: | 0x0000 |
| Initial IP value: | 0x0000 |
| Initial CS value: | 0x0000 |
| Overlay number: | 0x0000 |
| OEM identifier: | 0x0000 |
| OEM information: | 0x0000 |
| Address of NE header: | 0x00000110 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 5 |
| Time date stamp: | 24-May-2019 13:19:27 |
| Pointer to Symbol Table: | 0x00000000 |
| Number of symbols: | 0 |
| Size of Optional Header: | 0x00E0 |
| Characteristics: |
|
Sections
Name | Virtual Address | Virtual Size | Raw Size | Charateristics | Entropy |
|---|---|---|---|---|---|
.text | 0x00001000 | 0x0008DFDD | 0x0008E000 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.67525 |
.rdata | 0x0008F000 | 0x0002FD8E | 0x0002FE00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 5.76325 |
.data | 0x000BF000 | 0x00008F74 | 0x00005200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 1.19638 |
.rsrc | 0x000C8000 | 0x00032078 | 0x00032200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 7.74428 |
.reloc | 0x000FB000 | 0x00007134 | 0x00007200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 6.78396 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 5.40026 | 1007 | Latin 1 / Western European | English - United Kingdom | RT_MANIFEST |
2 | 2.05883 | 296 | Latin 1 / Western European | English - United Kingdom | RT_ICON |
3 | 2.25499 | 296 | Latin 1 / Western European | English - United Kingdom | RT_ICON |
4 | 3.65355 | 744 | Latin 1 / Western European | English - United Kingdom | RT_ICON |
5 | 3.43704 | 296 | Latin 1 / Western European | English - United Kingdom | RT_ICON |
6 | 4.16139 | 3752 | Latin 1 / Western European | English - United Kingdom | RT_ICON |
7 | 3.34702 | 1428 | Latin 1 / Western European | English - United Kingdom | RT_STRING |
8 | 3.2817 | 1674 | Latin 1 / Western European | English - United Kingdom | RT_STRING |
9 | 3.28849 | 1168 | Latin 1 / Western European | English - United Kingdom | RT_STRING |
10 | 3.28373 | 1532 | Latin 1 / Western European | English - United Kingdom | RT_STRING |
Imports
ADVAPI32.dll |
COMCTL32.dll |
COMDLG32.dll |
GDI32.dll |
IPHLPAPI.DLL |
KERNEL32.dll |
MPR.dll |
OLEAUT32.dll |
PSAPI.DLL |
SHELL32.dll |
Total processes
47
Monitored processes
8
Malicious processes
2
Suspicious processes
4
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process |
|---|---|---|---|---|
| 3080 | "C:\Users\admin\AppData\Local\Temp\ebcfe902-947d-4235-9a1f-922a96145a6c.exe" | C:\Users\admin\AppData\Local\Temp\ebcfe902-947d-4235-9a1f-922a96145a6c.exe | — | explorer.exe |
User: admin Integrity Level: MEDIUM Exit code: 0 | ||||
| 2532 | "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe" | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | ebcfe902-947d-4235-9a1f-922a96145a6c.exe | |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft .NET Assembly Registration Utility Version: 2.0.50727.5420 (Win7SP1.050727-5400) | ||||
| 3844 | schtasks /Delete /tn NYAN /F | C:\Windows\system32\schtasks.exe | — | RegAsm.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Manages scheduled tasks Exit code: 1 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 2600 | schtasks /create /tn NYAN /tr "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe" /sc minute /mo 1 | C:\Windows\system32\schtasks.exe | — | RegAsm.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Manages scheduled tasks Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 2684 | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | — | taskeng.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft .NET Assembly Registration Utility Exit code: 0 Version: 2.0.50727.5420 (Win7SP1.050727-5400) | ||||
| 2464 | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | — | taskeng.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft .NET Assembly Registration Utility Exit code: 0 Version: 2.0.50727.5420 (Win7SP1.050727-5400) | ||||
| 2368 | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | — | taskeng.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft .NET Assembly Registration Utility Exit code: 0 Version: 2.0.50727.5420 (Win7SP1.050727-5400) | ||||
| 4080 | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | — | taskeng.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft .NET Assembly Registration Utility Exit code: 0 Version: 2.0.50727.5420 (Win7SP1.050727-5400) | ||||
Total events
294
Read events
47
Write events
0
Delete events
0
Modification events
Executable files
1
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2532 | RegAsm.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Client.exe | executable | |
MD5:278EDBD499374BF73621F8C1F969D894 | SHA256:C6999B9F79932C3B4F1C461A69D9DC8DC301D6A155ABC33EFE1B6E9E4A038391 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
2
DNS requests
2
Threats
0
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 |
|---|---|---|---|---|---|---|
2532 | RegAsm.exe | 46.246.12.70:3030 | catatumbo.duckdns.org | Portlane AB | SE | malicious |
DNS requests
Domain | IP | Reputation |
|---|---|---|
catatumbo.duckdns.org |
| malicious |
Threats
PID | Process | Class | Message |
|---|---|---|---|
— | — | Misc activity | ET INFO DYNAMIC_DNS Query to *.duckdns. Domain |
2532 | RegAsm.exe | A Network Trojan was detected | MALWARE [PTsecurity] njRAT.Gen RAT outbound connection |
— | — | Misc activity | ET INFO DYNAMIC_DNS Query to *.duckdns. Domain |
2532 | RegAsm.exe | A Network Trojan was detected | MALWARE [PTsecurity] njRAT.Gen RAT outbound connection |
2 ETPRO signatures available at the full report