MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f586880e7c2d2991e4cc097fd515c0578af818ba1f57ece0dba2c8626161d22d. 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: 11

Intelligence 11 IOCs YARA 3 File information Comments

SHA256 hash:	f586880e7c2d2991e4cc097fd515c0578af818ba1f57ece0dba2c8626161d22d
SHA3-384 hash:	c3fbda11416b1c8a813d0c3f731a309b358d138f19834f5d0a2a4512f8ef3660b95df26a0b0cfa6b32309da06ce4b261
SHA1 hash:	8853f02d869283de001df7f8839f69d76b5929cd
MD5 hash:	ae6791ac3ac21fc3a498b3e520f464ea
humanhash:	burger-arkansas-mountain-connecticut
File name:	TyiJtz56.exe
Download:	download sample
Signature	njrat Create hunting rule
File size:	24'064 bytes
First seen:	2020-09-29 20:17:21 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	384:T+n2650N3qZbATcjRGC5Eo9D46BgnqUhay1ZmRvR6JZlbw8hqIusZzZlD4:sm+71d5XRpcnug8
Threatray	401 similar samples on MalwareBazaar
TLSH	D4B22A4E3FA98856C5BC177486A6965003B0A1470413EF2FCCC564CBAFB3AD92D4CAF9
Reporter	pmelson
Tags:	exe NjRAT

Intelligence

File Origin

# of uploads :

# of downloads :

182

Origin country :

n/a

Vendor Threat Intelligence

Detection:

Njrat

Link:

https://www.capesandbox.com/analysis/66858/

Result

Verdict:

Malware

Maliciousness:

Behaviour

Sending a UDP request

Creating a file in the %AppData% directory

Creating a process from a recently created file

Creating a file

Creating a process with a hidden window

Creating a window

DNS request

Connecting to a non-recommended domain

Using the Windows Management Instrumentation requests

Sending a custom TCP request

Deleting a recently created file

Launching the process to change network settings

Running batch commands

Launching a process

Unauthorized injection to a recently created process

Launching the process to change the firewall settings

Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch

Enabling autorun by creating a file

Result

Threat name:

njRat

Detection:

malicious

Classification:

troj.adwa.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/477856

Signature

.NET source code contains potential unpacker

.NET source code references suspicious native API functions

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Contains functionality to log keystrokes (.Net Source)

Creates autostart registry keys with suspicious names

Detected njRat

Drops PE files to the startup folder

Machine Learning detection for dropped file

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Modifies the windows firewall

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Protects its processes via BreakOnTermination flag

Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)

Uses netsh to modify the Windows network and firewall settings

Yara detected Njrat

Behaviour

Behavior Graph:

Download SVG

Detection:

njrat

Link:

https://mwdb.cert.pl/sample/f586880e7c2d2991e4cc097fd515c0578af818ba1f57ece0dba2c8626161d22d/

Threat name:

ByteCode-MSIL.Backdoor.Bladabhindi

Status:

Malicious

First seen:

2020-09-29 20:19:05 UTC

AV detection:

28 of 29 (96.55%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=6wdiqdt4fuuzdzgmbf75kfoak6fpqgf2d5l6zyg3ulegeylb2iwq._file

Result

Malware family:

njrat

Score:

10/10

Tags:

evasion persistence trojan family:njrat

Link:

https://tria.ge/reports/200929-9zhlqmzby6/

Behaviour

Runs ping.exe

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Modifies service

Adds Run key to start application

Drops startup file

Loads dropped DLL

Executes dropped EXE

Modifies Windows Firewall

njRAT/Bladabindi

Unpacked files

SH256 hash:

f586880e7c2d2991e4cc097fd515c0578af818ba1f57ece0dba2c8626161d22d

MD5 hash:

ae6791ac3ac21fc3a498b3e520f464ea

SHA1 hash:

8853f02d869283de001df7f8839f69d76b5929cd

Detections:

win_njrat_w1

win_njrat_g1

Link:

https://www.unpac.me/results/df45ab1e-6bf9-43d2-ae90-06cb56cda9c0/

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

NJRat

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/f586880e7c2d2991e4cc097fd515c0578af818ba1f57ece0dba2c8626161d22d

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 Create hunting rule
Author:	Florian Roth
Description:	Detects malware from disclosed CN malware set
Reference:	https://twitter.com/cyberintproject/status/961714165550342146

Rule name:	Njrat Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect njRAT in memory

Rule name:	win_njrat_w1 Create hunting rule
Author:	Brian Wallace @botnet_hunter
Description:	Identify njRat

File information

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

Web download

njrat

exe f586880e7c2d2991e4cc097fd515c0578af818ba1f57ece0dba2c8626161d22d

(this sample)

Link

https://www.virustotal.com/gui/file/f586880e7c2d2991e4cc097fd515c0578af818ba1f57ece0dba2c8626161d22d/detection

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/66858/

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