MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 71d16f135efba49ec8ae572a4da9618e943dcab4733b37601498696acf2d119c. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry



njrat


Vendor detections: 15


Intelligence 15 IOCs YARA 16 File information Comments

SHA256 hash: 71d16f135efba49ec8ae572a4da9618e943dcab4733b37601498696acf2d119c
SHA3-384 hash: acc84dde64bed5058f5c0632fecde6272147066d9c6ae1d4259b798621451b3ab5d3e3cefdc9bd78dd47ba7a6ad72d9e
SHA1 hash: fd90115bd664660068dbdb76b39c18a20fc8664c
MD5 hash: 733e8f1d3fa330f034295d0fd12c4894
humanhash: fifteen-bacon-six-timing
File name:nJack.exe
Download: download sample
Signature njrat
File size:44'032 bytes
First seen:2025-05-09 19:57:10 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 384:EZyGGMFgpWoy7upvFOSQEBIXAknzYIij+ZsNO3PlpJKkkjh/TzF7pWnC/greT0pO:yfBWol7MvFRKQMuXQ/of/+L
Threatray 608 similar samples on MalwareBazaar
TLSH T1BE13E74CB694E174D5FF8BF1B4A2B2890B71A017AC06930F99F154D94BB3EC0A611EE7
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10522/11/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter aachum
Tags:exe NjRAT


Avatar
iamaachum
http://files.innovadentalkj.com/js/nJack.exe

njRAT C2: 213.209.150.210:7773

Intelligence


File Origin
# of uploads :
1
# of downloads :
473
Origin country :
ES ES
Vendor Threat Intelligence
Verdict:
Malicious
Score:
97.4%
Tags:
bladabindi autorun njrat
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Launching a process
Creating a process with a hidden window
Enabling the 'hidden' option for files in the %temp% directory
Creating a window
Connecting to a non-recommended domain
Connection attempt
Using the Windows Management Instrumentation requests
Sending a custom TCP request
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm cmd dllhost lolbin njrat njrat obfuscated rat schtasks vbnet
Result
Threat name:
Detection:
malicious
Classification:
phis.troj.adwa.evad
Score:
100 / 100
Behaviour
Behavior Graph:
n/a
Threat name:
ByteCode-MSIL.Backdoor.njRAT
Status:
Malicious
First seen:
2025-05-08 23:16:57 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
32 of 37 (86.49%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:njrat botnet:hacked discovery persistence trojan
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Adds Run key to start application
Checks computer location settings
Drops startup file
Executes dropped EXE
Njrat family
njRAT/Bladabindi
Malware Config
C2 Extraction:
213.209.150.210:7773
Verdict:
Malicious
Tags:
rat njrat Win.Packed.Msilperseus-9220094-0 bladabindi
YARA:
malware_Njrat_strings Windows_Trojan_Njrat_30f3c220 MAL_Njrat MALWARE_Win_NjRAT JPCERTCC_Njrat
Unpacked files
SH256 hash:
71d16f135efba49ec8ae572a4da9618e943dcab4733b37601498696acf2d119c
MD5 hash:
733e8f1d3fa330f034295d0fd12c4894
SHA1 hash:
fd90115bd664660068dbdb76b39c18a20fc8664c
Please note that we are no longer able to provide a coverage score for Virus Total.

YARA Signatures


MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:CN_disclosed_20180208_c
Author:Florian Roth (Nextron Systems)
Description:Detects malware from disclosed CN malware set
Reference:https://twitter.com/cyberintproject/status/961714165550342146
Rule name:CN_disclosed_20180208_c_RID2E71
Author:Florian Roth
Description:Detects malware from disclosed CN malware set
Reference:https://twitter.com/cyberintproject/status/961714165550342146
Rule name:malware_Njrat_strings
Author:JPCERT/CC Incident Response Group
Description:detect njRAT in memory
Rule name:MALWARE_Win_NjRAT
Author:ditekSHen
Description:Detects NjRAT / Bladabindi / NjRAT Golden
Rule name:MAL_njrat
Author:SECUINFRA Falcon Team
Rule name:Multifamily_RAT_Detection
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
Author:malware-lu
Rule name:NETexecutableMicrosoft
Author:malware-lu
Rule name:Njrat
Author:botherder https://github.com/botherder
Description:Njrat
Rule name:Njrat
Author:JPCERT/CC Incident Response Group
Description:detect njRAT in memory
Rule name:pe_imphash
Rule name:RAT_win_njrat
Author:KrknSec
Description:Detects njRAT binaries.
Reference:https://malpedia.caad.fkie.fraunhofer.de/details/win.njrat
Rule name:Skystars_LightDefender_Njrat_Rule
Author:Skystars LightDefender
Description:Detects Njrat
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_Njrat_30f3c220
Rule name:Windows_Trojan_Njrat_30f3c220
Author:Elastic Security

File information


The table below shows additional information about this malware sample such as delivery method and external references.

Web download

njrat

Executable exe 71d16f135efba49ec8ae572a4da9618e943dcab4733b37601498696acf2d119c

(this sample)

  
Dropped by
Amadey
  
Delivery method
Distributed via web download

BLint


The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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