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| File name: | Server.exe |
| Full analysis: | https://app.any.run/tasks/c9a9b4a5-a6e0-4dbc-b8e6-2fac2379330e |
| 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: | June 16, 2019, 23:53:02 |
| 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: | DBDE4E12E7D589BFA9E10E66BB2CD57C |
| SHA1: | EEF91851E2C57362CCBA443649280396EE32D3ED |
| SHA256: | 0E4C75C7D973DFDEBA24199AE56DAFCB3AAC23A5F78F8F024FF5CEDC9D3B075F |
| SSDEEP: | 384:VMQ+SAN7uprgvM5OSUswZXg69gbm4hfpFmRvR6JZlbw8hqIusZzZ2x:dOaxVULRpcnup |
MALICIOUS
Changes the autorun value in the registry
- Server.exe (PID: 3984)
NJRAT was detected
- Server.exe (PID: 3984)
Writes to a start menu file
- Server.exe (PID: 3984)
SUSPICIOUS
Uses NETSH.EXE for network configuration
- Server.exe (PID: 3984)
Creates files in the user directory
- Server.exe (PID: 3984)
Executable content was dropped or overwritten
- Server.exe (PID: 3984)
INFO
Manual execution by user
- WINWORD.EXE (PID: 3140)
Creates files in the user directory
- WINWORD.EXE (PID: 3140)
Reads Microsoft Office registry keys
- WINWORD.EXE (PID: 3140)
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.) (55.8) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (21) |
| .scr | | | Windows screen saver (9.9) |
| .dll | | | Win32 Dynamic Link Library (generic) (5) |
| .exe | | | Win32 Executable (generic) (3.4) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2019:06:16 18:13:35+02:00 |
| PEType: | PE32 |
| LinkerVersion: | 8 |
| CodeSize: | 22016 |
| InitializedDataSize: | 1536 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x748e |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 16-Jun-2019 16:13:35 |
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: | 16-Jun-2019 16:13:35 |
| 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 | 0x00005494 | 0x00005600 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 5.57619 |
.rsrc | 0x00008000 | 0x00000240 | 0x00000400 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.96608 |
.reloc | 0x0000A000 | 0x0000000C | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 0.0815394 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 4.96801 | 487 | Latin 1 / Western European | UNKNOWN | RT_MANIFEST |
Imports
mscoree.dll |
Total processes
37
Monitored processes
3
Malicious processes
1
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process |
|---|---|---|---|---|
| 3984 | "C:\Users\admin\AppData\Local\Temp\Server.exe" | C:\Users\admin\AppData\Local\Temp\Server.exe | explorer.exe | |
User: admin Integrity Level: MEDIUM | ||||
| 2740 | netsh firewall add allowedprogram "C:\Users\admin\AppData\Local\Temp\Server.exe" "Server.exe" ENABLE | C:\Windows\system32\netsh.exe | — | Server.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Network Command Shell Exit code: 1 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 3140 | "C:\Program Files\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\admin\Desktop\ledassociated.rtf" | C:\Program Files\Microsoft Office\Office14\WINWORD.EXE | — | explorer.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft Word Exit code: 0 Version: 14.0.6024.1000 | ||||
Total events
837
Read events
666
Write events
0
Delete events
0
Modification events
Executable files
1
Suspicious files
0
Text files
2
Unknown types
6
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3140 | WINWORD.EXE | C:\Users\admin\AppData\Local\Temp\CVRABF3.tmp.cvr | — | |
MD5:— | SHA256:— | |||
| 3984 | Server.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b199e78739066e1f9c1ab46f2b876c97.exe | executable | |
MD5:DBDE4E12E7D589BFA9E10E66BB2CD57C | SHA256:0E4C75C7D973DFDEBA24199AE56DAFCB3AAC23A5F78F8F024FF5CEDC9D3B075F | |||
| 3140 | WINWORD.EXE | C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRS{7FED709C-63A9-46A7-BE4E-38A49DEF99DA}.tmp | dbf | |
MD5:169BCAB3D8664C60D02E13DE97265B8A | SHA256:AEE056889BB6A22C025F223F95FCA03A35A4E0759B972592226F8C6A929EC93E | |||
| 3140 | WINWORD.EXE | C:\Users\admin\Desktop\~$dassociated.rtf | pgc | |
MD5:CFF6954F32C1B4C03E698A74AD832C4D | SHA256:88E63D847E7E5C39BB9D29A2B690C01957230F6168DEEF4D570B06DD2C3CE89D | |||
| 3140 | WINWORD.EXE | C:\Users\admin\AppData\Roaming\Microsoft\Office\Recent\index.dat | text | |
MD5:C42B4751070A32AC24273136153B2C2D | SHA256:B9D925E3657AFAB8687911108724A574F319C2854A04D4DEEFE9B0C2EA170EA5 | |||
| 3140 | WINWORD.EXE | C:\Users\admin\AppData\Roaming\Microsoft\Templates\~$Normal.dotm | pgc | |
MD5:DDEC6F4DC79E3B47A4E3F20FD2E1C4D8 | SHA256:1E32410BB9EEFB9813E788F5A1382F7F871D696FBADF64B6967A8DED741FFFD2 | |||
| 3140 | WINWORD.EXE | C:\Users\admin\AppData\Roaming\Microsoft\Office\Recent\ledassociated.rtf.LNK | lnk | |
MD5:B14CB4CD7ECA88F6F30B177D3CCF4708 | SHA256:1C24E114B55ACA7A5C28C434E2984691E843028051F95CBD533F94AFBC64CA58 | |||
| 3140 | WINWORD.EXE | C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRS{D429DFF3-0072-4352-B9B2-D77026D1F395}.tmp | smt | |
MD5:5D4D94EE7E06BBB0AF9584119797B23A | SHA256:4826C0D860AF884D3343CA6460B0006A7A2CE7DBCCC4D743208585D997CC5FD1 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
3
DNS requests
3
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 |
|---|---|---|---|---|---|---|
3984 | Server.exe | 141.255.153.235:51256 | jokee1.ddns.net | Lost Oasis SARL | NL | unknown |
DNS requests
Domain | IP | Reputation |
|---|---|---|
jokee1.ddns.net |
| malicious |
dns.msftncsi.com |
| shared |