File name:

server.exe

Full analysis: https://app.any.run/tasks/d3fb6792-2040-4c1d-a294-8f8f2b1a0b83
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: July 12, 2020, 17:51:39
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
rat
njrat
bladabindi
trojan
stealer
SecurityXploded
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5:

17E2D3FD0D8722246C258DEDEE6577D5

SHA1:

6B16D91B5049B6227D0063489451B2524D0ECD0D

SHA256:

C4DEF17EEFA74972AFB3D8D8FB609DE4634670985834F243AF0899CB53475063

SSDEEP:

384:ntPwYRUnJ9wJQdjgAQGM9+DKgBtpKMQwnlw0u8RgIZ3BSJ1BTpHVkw3ccNwifGIS:nxw9nJ9wJZocbwnlw0QAw3ccrfL+Or

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

    • Writes to a start menu file

      • server.exe (PID: 2208)
    • Actions looks like stealing of personal data

      • vbc.exe (PID: 3336)
      • server.exe (PID: 2208)
    • Detected SecurityXploded stealer

      • vbc.exe (PID: 3336)
    • Stealing of credential data

      • vbc.exe (PID: 3336)
    • Changes the autorun value in the registry

      • server.exe (PID: 2208)
    • Connects to CnC server

      • server.exe (PID: 2208)
    • NJRAT was detected

      • server.exe (PID: 2208)
  • SUSPICIOUS

    • Executable content was dropped or overwritten

      • server.exe (PID: 2208)
    • Creates files in the user directory

      • server.exe (PID: 2208)
    • Uses NETSH.EXE for network configuration

      • server.exe (PID: 2208)
    • Executes scripts

      • server.exe (PID: 2208)
  • 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

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2020:07:12 19:39:51+02:00
PEType: PE32
LinkerVersion: 8
CodeSize: 31232
InitializedDataSize: 1536
UninitializedDataSize: -
EntryPoint: 0x992e
OSVersion: 4
ImageVersion: -
SubsystemVersion: 4
Subsystem: Windows GUI

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 12-Jul-2020 17:39:51

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: 12-Jul-2020 17:39:51
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
0x00007934
0x00007A00
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
5.69166
.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.
screenshotscreenshot
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
start #NJRAT server.exe netsh.exe no specs #SECURITYXPLODED vbc.exe

Process information

PID
CMD
Path
Indicators
Parent process
2208"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
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
3336"C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" -f "C:\Users\admin\AppData\Local\Temp\0"C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
server.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Visual Basic Command Line Compiler
Exit code:
0
Version:
8.0.50727.5420
Modules
Images
c:\windows\microsoft.net\framework\v2.0.50727\vbc.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\crypt32.dll
c:\windows\system32\ole32.dll
3940netsh firewall add allowedprogram "C:\Users\admin\AppData\Local\Temp\server.exe" "server.exe" ENABLEC:\Windows\system32\netsh.exeserver.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
Total events
137
Read events
51
Write events
86
Delete events
0

Modification events

(PID) Process:(2208) server.exeKey:HKEY_CURRENT_USER\Software\fbc3258f17eaf681ef8dff053e06c9d1
Operation:writeName:hp
Value:
ZmZmZjI1MzR5N3RyaHJlYTU2eS5kZG5zLm5ldDoyNTU2LA==
(PID) Process:(2208) server.exeKey:HKEY_CURRENT_USER\Software\fbc3258f17eaf681ef8dff053e06c9d1
Operation:writeName:i
Value:
!
(PID) Process:(2208) server.exeKey:HKEY_CURRENT_USER
Operation:writeName:di
Value:
!
(PID) Process:(2208) server.exeKey:HKEY_CURRENT_USER\Environment
Operation:writeName:SEE_MASK_NOZONECHECKS
Value:
1
(PID) Process:(2208) server.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:fbc3258f17eaf681ef8dff053e06c9d1
Value:
"C:\Users\admin\AppData\Local\Temp\server.exe" ..
(PID) Process:(3940) netsh.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\12F\52C64B7E
Operation:writeName:LanguageList
Value:
en-US
(PID) Process:(3940) netsh.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\12F\52C64B7E
Operation:writeName:@%SystemRoot%\system32\p2pcollab.dll,-8042
Value:
Peer to Peer Trust
(PID) Process:(3940) netsh.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\12F\52C64B7E
Operation:writeName:@%SystemRoot%\system32\qagentrt.dll,-10
Value:
System Health Authentication
(PID) Process:(3940) 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:(3940) 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
1
Unknown types
0

Dropped files

PID
Process
Filename
Type
3336vbc.exeC:\Users\admin\AppData\Local\Temp\Login Data
MD5:
SHA256:
2208server.exeC:\Users\admin\AppData\Local\Temp\0
MD5:
SHA256:
2208server.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fbc3258f17eaf681ef8dff053e06c9d1.exeexecutable
MD5:
SHA256:
3336vbc.exeC:\Users\admin\AppData\Local\Temp\0text
MD5:8C8AFD42F23B16E9C370192D043DD9E0
SHA256:4A2F18E43BFDCDA04555D70C4917A986DF94489A2991B374AD94205DB586F030
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
20

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
2208
server.exe
37.1.218.71:2556
ffff2534y7trhrea56y.ddns.net
Leaseweb Deutschland GmbH
DE
malicious

DNS requests

Domain
IP
Reputation
ffff2534y7trhrea56y.ddns.net
  • 37.1.218.71
malicious

Threats

PID
Process
Class
Message
1040
svchost.exe
Potentially Bad Traffic
ET POLICY DNS Query to DynDNS Domain *.ddns .net
2208
server.exe
A Network Trojan was detected
MALWARE [PTsecurity] njRAT.Gen RAT outbound connection
2208
server.exe
A Network Trojan was detected
ET TROJAN njrat ver 0.7d Malware CnC Callback (Get Passwords)
17 ETPRO signatures available at the full report
No debug info