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| File name: | Server.exe |
| Full analysis: | https://app.any.run/tasks/5a0f23f0-249a-46bb-aab4-5652d8466258 |
| 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: | October 19, 2020, 22:31:53 |
| 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: | 89EF2BA3CCB877C27CEF71C5B63A502C |
| SHA1: | A31C67D3878F701418402464718621C4F71202EE |
| SHA256: | ED46DA701A377F5018F805CEB85AA31E72D3D50EA0ACBF84077C02C9861A2D69 |
| SSDEEP: | 384:CZyEqFgpWoy7krZtEVOsMBIHAkHC9D9O5UE5QzwBlpJNakkjh/TzF7pWn4PgreTr:w2Wol70ZtGOKgcvQO+11+L |
MALICIOUS
Writes to a start menu file
- system32t.exe (PID: 3204)
Connects to CnC server
- system32t.exe (PID: 3204)
NJRAT was detected
- system32t.exe (PID: 3204)
Application was dropped or rewritten from another process
- .exe (PID: 3924)
Changes the autorun value in the registry
- system32t.exe (PID: 3204)
- .exe (PID: 3924)
SUSPICIOUS
Executable content was dropped or overwritten
- Server.exe (PID: 3060)
- system32t.exe (PID: 3204)
Starts itself from another location
- Server.exe (PID: 3060)
Creates files in the user directory
- system32t.exe (PID: 3204)
INFO
Reads Microsoft Office registry keys
- WINWORD.EXE (PID: 2220)
Manual execution by user
- WINWORD.EXE (PID: 2220)
Creates files in the user directory
- WINWORD.EXE (PID: 2220)
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: | 2020:10:19 23:52:35+02:00 |
| PEType: | PE32 |
| LinkerVersion: | 8 |
| CodeSize: | 41984 |
| InitializedDataSize: | 1536 |
| UninitializedDataSize: | - |
| EntryPoint: | 0xc2be |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 19-Oct-2020 21:52:35 |
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: | 0x00000080 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 3 |
| Time date stamp: | 19-Oct-2020 21:52:35 |
| 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 | 0x00002000 | 0x0000A2C4 | 0x0000A400 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 5.67533 |
.rsrc | 0x0000E000 | 0x00000400 | 0x00000400 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 3.51607 |
.reloc | 0x00010000 | 0x0000000C | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 0.0776332 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 5.00112 | 490 | UNKNOWN | UNKNOWN | RT_MANIFEST |
Imports
mscoree.dll |
Total processes
40
Monitored processes
4
Malicious processes
2
Suspicious processes
1
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process |
|---|---|---|---|---|
| 3060 | "C:\Users\admin\AppData\Local\Temp\Server.exe" | C:\Users\admin\AppData\Local\Temp\Server.exe | explorer.exe | |
User: admin Integrity Level: MEDIUM Exit code: 0 | ||||
| 3204 | "C:\Users\admin\AppData\Local\Temp\system32t.exe" | C:\Users\admin\AppData\Local\Temp\system32t.exe | Server.exe | |
User: admin Integrity Level: MEDIUM | ||||
| 2220 | "C:\Program Files\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\admin\Desktop\rightfoundation.rtf" | C:\Program Files\Microsoft Office\Office14\WINWORD.EXE | — | explorer.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft Word Version: 14.0.6024.1000 | ||||
| 3924 | "C:\Users\admin\AppData\Local\Temp\.exe" | C:\Users\admin\AppData\Local\Temp\.exe | system32t.exe | |
User: admin Integrity Level: MEDIUM | ||||
Total events
2 255
Read events
1 466
Write events
0
Delete events
0
Modification events
Executable files
3
Suspicious files
0
Text files
2
Unknown types
4
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2220 | WINWORD.EXE | C:\Users\admin\AppData\Local\Temp\CVREDEF.tmp.cvr | — | |
MD5:— | SHA256:— | |||
| 2220 | WINWORD.EXE | C:\Users\admin\AppData\Roaming\Microsoft\Office\Recent\rightfoundation.rtf.LNK | lnk | |
MD5:4BDA45BA03267894007EA70BAD87D4F4 | SHA256:1D9B47AF3E11FEC1DD7A3F555002FD30571E3399EC410DE13DD289891035CB0A | |||
| 3204 | system32t.exe | C:\Users\admin\AppData\Local\Temp\.exe | executable | |
MD5:786F557E9407BF72E735D958735FF330 | SHA256:4A61FB72109DD8A02F93789319C021C8170F1BF3529E3EEDD444D80947D833F6 | |||
| 2220 | WINWORD.EXE | C:\Users\admin\AppData\Roaming\Microsoft\Templates\~$Normal.dotm | pgc | |
MD5:A0191A2BCADFC8C77975B2110FD04E96 | SHA256:2CB82199E0C92B2D705358755E96EEE335DCAD8E42C9BBCFDA5AB9FE55587C1C | |||
| 3060 | Server.exe | C:\Users\admin\AppData\Local\Temp\system32t.exe | executable | |
MD5:89EF2BA3CCB877C27CEF71C5B63A502C | SHA256:ED46DA701A377F5018F805CEB85AA31E72D3D50EA0ACBF84077C02C9861A2D69 | |||
| 2220 | WINWORD.EXE | C:\Users\admin\AppData\Roaming\Microsoft\Office\Recent\index.dat | text | |
MD5:27445FC2D9139951AF385B7986196647 | SHA256:0CFF9803EBE3498794D5E33F2E1B39E9D1BE7ED2B8BBE53589D69B74D50D8BEA | |||
| 3204 | system32t.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe | executable | |
MD5:89EF2BA3CCB877C27CEF71C5B63A502C | SHA256:ED46DA701A377F5018F805CEB85AA31E72D3D50EA0ACBF84077C02C9861A2D69 | |||
| 2220 | WINWORD.EXE | C:\Users\admin\Desktop\~$ghtfoundation.rtf | pgc | |
MD5:E14D5C4E64C0BA324E5538BBB100A56E | SHA256:BECF966E6606E010612632A48B1A69246CEABD5385BB86C6EFEBD76938B3FC87 | |||
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
1
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 |
|---|---|---|---|---|---|---|
3204 | system32t.exe | 3.13.191.225:16863 | 0.tcp.ngrok.io | — | US | malicious |
DNS requests
Domain | IP | Reputation |
|---|---|---|
0.tcp.ngrok.io |
| shared |
Threats
PID | Process | Class | Message |
|---|---|---|---|
— | — | Potential Corporate Privacy Violation | ET POLICY DNS Query to a *.ngrok domain (ngrok.io) |
3204 | system32t.exe | A Network Trojan was detected | ET TROJAN Bladabindi/njRAT CnC Command (ll) |
3204 | system32t.exe | A Network Trojan was detected | MALWARE [PTsecurity] njRAT/Bladabindi |
3204 | system32t.exe | A Network Trojan was detected | MALWARE [PTsecurity] njRAT.Gen RAT outbound connection |
24 ETPRO signatures available at the full report