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File name:

Server.exe

Full analysis: https://app.any.run/tasks/b823819f-a01d-4875-9d18-33b069edbb6d
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: November 29, 2020, 11:54:28
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
rat
njrat
bladabindi
trojan
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5:

4F4C59D4382D71CEBAF50AC0B9B8FD7C

SHA1:

068C518EBB51F996257DE09F2708CE17D1D3C61F

SHA256:

B24E390FB53350BA07228665BF648C0C7761CD5589821F28A8AC8AE2403FF567

SSDEEP:

384:625O4UefwJwYgsiRtzgKzxHNFPIE6T2KdlD/odg9TdFpyFEIGsJjwE7UMcrie48X:/t0l0tzTfQRouDbEEIGfRi+f

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

    • Application was dropped or rewritten from another process

      • Server.exe (PID: 960)
      • HwpUpdate.exe (PID: 2448)
    • Connects to CnC server

      • HwpUpdate.exe (PID: 2448)
    • Writes to a start menu file

      • HwpUpdate.exe (PID: 2448)
    • Changes the autorun value in the registry

      • HwpUpdate.exe (PID: 2448)
    • NJRAT was detected

      • HwpUpdate.exe (PID: 2448)
  • SUSPICIOUS

    • Executable content was dropped or overwritten

      • Server.exe (PID: 960)
      • HwpUpdate.exe (PID: 2448)
    • Creates files in the user directory

      • HwpUpdate.exe (PID: 2448)
    • Drops a file with a compile date too recent

      • HwpUpdate.exe (PID: 2448)
      • Server.exe (PID: 960)
    • Starts itself from another location

      • Server.exe (PID: 960)
    • Uses NETSH.EXE for network configuration

      • HwpUpdate.exe (PID: 2448)
  • 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.) (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

Subsystem: Windows GUI
SubsystemVersion: 4
ImageVersion: -
OSVersion: 4
EntryPoint: 0x97ce
UninitializedDataSize: -
InitializedDataSize: 1536
CodeSize: 30720
LinkerVersion: 8
PEType: PE32
TimeStamp: 2020:11:29 12:51:28+01:00
MachineType: Intel 386 or later, and compatibles

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 29-Nov-2020 11:51:28

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: 29-Nov-2020 11:51:28
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
0x000077D4
0x00007800
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
5.67371
.rsrc
0x0000A000
0x00000240
0x00000400
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
4.96877
.reloc
0x0000C000
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 server.exe #NJRAT hwpupdate.exe netsh.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
960"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
2448"C:\Users\admin\AppData\Local\Temp\HwpUpdate.exe" C:\Users\admin\AppData\Local\Temp\HwpUpdate.exe
Server.exe
User:
admin
Integrity Level:
MEDIUM
1176netsh firewall add allowedprogram "C:\Users\admin\AppData\Local\Temp\HwpUpdate.exe" "HwpUpdate.exe" ENABLEC:\Windows\system32\netsh.exeHwpUpdate.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)
Total events
511
Read events
399
Write events
0
Delete events
0

Modification events

No data
Executable files
2
Suspicious files
0
Text files
0
Unknown types
0

Dropped files

PID
Process
Filename
Type
2448HwpUpdate.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d3567c321359dde76cc2391d269c454c.exeexecutable
MD5:4F4C59D4382D71CEBAF50AC0B9B8FD7C
SHA256:B24E390FB53350BA07228665BF648C0C7761CD5589821F28A8AC8AE2403FF567
960Server.exeC:\Users\admin\AppData\Local\Temp\HwpUpdate.exeexecutable
MD5:4F4C59D4382D71CEBAF50AC0B9B8FD7C
SHA256:B24E390FB53350BA07228665BF648C0C7761CD5589821F28A8AC8AE2403FF567
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
1
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
2448
HwpUpdate.exe
211.44.16.252:8080
incros34.iptime.org
SK Broadband Co Ltd
KR
malicious

DNS requests

Domain
IP
Reputation
incros34.iptime.org
  • 211.44.16.252
malicious

Threats

PID
Process
Class
Message
2448
HwpUpdate.exe
A Network Trojan was detected
ET TROJAN Bladabindi/njRAT CnC Command (ll)
2448
HwpUpdate.exe
A Network Trojan was detected
MALWARE [PTsecurity] njRAT/Bladabindi
2448
HwpUpdate.exe
A Network Trojan was detected
MALWARE [PTsecurity] njRAT.Gen RAT outbound connection
2448
HwpUpdate.exe
A Network Trojan was detected
ET TROJAN njrat ver 0.7d Malware CnC Callback (Remote Desktop)
2448
HwpUpdate.exe
A Network Trojan was detected
ET TROJAN njrat ver 0.7d Malware CnC Callback (Remote Desktop)
4 ETPRO signatures available at the full report
No debug info