File name:

nJ.exe

Full analysis: https://app.any.run/tasks/6a0cb6d8-4b9f-43ab-ab84-449c8830221d
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.

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Analysis date: May 28, 2020, 08:05:19
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
rat
njrat
bladabindi
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5:

E621FF89A1BFD22CB3964C0ABD852653

SHA1:

846EC204C26B6531A2F7ED943C3C5990F0352F6E

SHA256:

26107D42E0D8684F4250628D438FB0869132FAA298648FEEC17B25E5DB9A8C3B

SSDEEP:

384:A8aLWS0dABLYVq6RxP8MDFF09vK563gRMmJKUv0mRvR6JZlbw8hqIusZzZN1:vXcwt3tRpcnuI

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.

  • MALICIOUS

    • Changes the autorun value in the registry

      • server.exe (PID: 2956)

    • NJRAT was detected

      • server.exe (PID: 2956)

  • SUSPICIOUS

    • Executable content was dropped or overwritten

      • nJ.exe (PID: 2944)

    • Uses NETSH.EXE for network configuration

      • server.exe (PID: 2956)

    • Starts itself from another location

      • nJ.exe (PID: 2944)

  • INFO

    No info indicators.
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

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: 2019:08:01 17:09:47+02:00
PEType: PE32
LinkerVersion: 8
CodeSize: 22016
InitializedDataSize: 1536
UninitializedDataSize: -
EntryPoint: 0x747e
OSVersion: 4
ImageVersion: -
SubsystemVersion: 4
Subsystem: Windows GUI

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 01-Aug-2019 15:09:47

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: 01-Aug-2019 15:09:47
Pointer to Symbol Table: 0x00000000
Number of symbols: 0
Size of Optional Header: 0x00E0
Characteristics:
  • IMAGE_FILE_32BIT_MACHINE
  • IMAGE_FILE_EXECUTABLE_IMAGE

Sections

Name
Virtual Address
Virtual Size
Raw Size
Charateristics
Entropy
.text
0x00002000
0x00005484
0x00005600
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
5.56902
.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
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
37
Monitored processes
3
Malicious processes
2
Suspicious processes
0

Behavior graph

Click at the process to see the details
drop and start start nj.exe #NJRAT server.exe netsh.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
2248netsh firewall add allowedprogram "C:\Users\admin\AppData\Local\Temp\server.exe" "server.exe" ENABLEC:\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)
Modules
Images
c:\windows\system32\netsh.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\credui.dll
c:\windows\system32\user32.dll
2944"C:\Users\admin\AppData\Local\Temp\nJ.exe" C:\Users\admin\AppData\Local\Temp\nJ.exe
explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\appdata\local\temp\nj.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\mscoree.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\microsoft.net\framework\v4.0.30319\mscoreei.dll
2956"C:\Users\admin\AppData\Local\Temp\server.exe" C:\Users\admin\AppData\Local\Temp\server.exe
nJ.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\appdata\local\temp\server.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\mscoree.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\microsoft.net\framework\v4.0.30319\mscoreei.dll
Total events
500
Read events
382
Write events
118
Delete events
0

Modification events

(PID) Process:(2944) nJ.exeKey:HKEY_CURRENT_USER
Operation:writeName:di
Value:
!
(PID) Process:(2944) nJ.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:UNCAsIntranet
Value:
0
(PID) Process:(2944) nJ.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:AutoDetect
Value:
1
(PID) Process:(2956) server.exeKey:HKEY_CURRENT_USER
Operation:writeName:di
Value:
!
(PID) Process:(2956) server.exeKey:HKEY_CURRENT_USER\Environment
Operation:writeName:SEE_MASK_NOZONECHECKS
Value:
1
(PID) Process:(2248) netsh.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\12F\52C64B7E
Operation:writeName:LanguageList
Value:
en-US
(PID) Process:(2248) netsh.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\12F\52C64B7E
Operation:writeName:@%SystemRoot%\system32\p2pcollab.dll,-8042
Value:
Peer to Peer Trust
(PID) Process:(2248) netsh.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\12F\52C64B7E
Operation:writeName:@%SystemRoot%\system32\qagentrt.dll,-10
Value:
System Health Authentication
(PID) Process:(2248) netsh.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\12F\52C64B7E
Operation:writeName:@%SystemRoot%\system32\dnsapi.dll,-103
Value:
Domain Name System (DNS) Server Trust
(PID) Process:(2248) netsh.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\12F\52C64B7E
Operation:writeName:@%SystemRoot%\System32\fveui.dll,-843
Value:
BitLocker Drive Encryption
Executable files
1
Suspicious files
0
Text files
0
Unknown types
0

Dropped files

PID
Process
Filename
Type
2944nJ.exeC:\Users\admin\AppData\Local\Temp\server.exeexecutable
MD5:—
SHA256:—
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
15
DNS requests
0
Threats
0

HTTP requests

No 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
2956
server.exe
81.171.31.247:5552
—
LeaseWeb Netherlands B.V.
NL
malicious
—
—
81.171.31.247:5552
—
LeaseWeb Netherlands B.V.
NL
malicious

DNS requests

No data

Threats

No threats detected
No debug info
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Reports
nJ.exe