MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 75446fb55096722788991655a418ca6c1b786becfbc7a41694a6e673aa32446c. 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: 14

Intelligence 14 IOCs 1 YARA 8 File information Comments

SHA256 hash:	75446fb55096722788991655a418ca6c1b786becfbc7a41694a6e673aa32446c
SHA3-384 hash:	dad8e8627b178e1b0551c200b0071cbb0e86bd077ca0e10228413e824713081fead35fc6a426cd853a7d15aae82660d5
SHA1 hash:	b1b8ae36b3458f37cbc62274b110a2cd36959a2b
MD5 hash:	bef12f51bc6aa8bd332aca14a02192be
humanhash:	leopard-fix-jig-blossom
File name:	update.exe
Download:	download sample
Signature	njrat Create hunting rule
File size:	91'648 bytes
First seen:	2022-02-01 15:36:38 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'751 x AgentTesla, 19'657 x Formbook, 12'248 x SnakeKeylogger)
ssdeep	768:DyTbC81NgRpcnuDqWSU2Ip4jBqltCF0AxEjenoB69+Fx:qbC83gRWuDqWSFHBWAxEjc+
Threatray	912 similar samples on MalwareBazaar
TLSH	T1FA93A7E2B51ACDD8D81E07F10C7A962001765E4E48A5D50E34EA3E3FB7B33533896D6A
File icon (PE):
dhash icon	68d8d8c8d9a9c1d9 (96 x SnakeKeylogger, 67 x RemcosRAT, 66 x Formbook)
Reporter	r3dbU7z
Tags:	exe NjRAT

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOC	ThreatFox Reference
111.90.149.115:10443	https://threatfox.abuse.ch/ioc/373954/

Intelligence

File Origin

# of uploads :

# of downloads :

255

Origin country :

n/a

Vendor Threat Intelligence

Detection:

njRat

Link:

https://www.capesandbox.com/analysis/229204/

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Сreating synchronization primitives

DNS request

Creating a file in the %AppData% directory

Creating a process from a recently created file

Creating a file

Creating a file in the Program Files subdirectories

Creating a process with a hidden window

Creating a window

Searching for synchronization primitives

Using the Windows Management Instrumentation requests

Sending a custom TCP request

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

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

cmd.exe fingerprint greyware keylogger netsh.exe njrat obfuscated packed rat replace.exe stealer update.exe

Link:

https://www.filescan.io/uploads/61f953a46d25ac9e79f65d01/reports/7108f512-0c66-430f-9428-56e2d64facea/overview

Result

Verdict:

MALICIOUS

Details

Windows PE Executable

Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/77fa85cd-9b1d-4a1f-9095-6f339e60a7d1

Result

Threat name:

njRat

Detection:

malicious

Classification:

troj.adwa.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/931794

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

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Contains functionality to log keystrokes (.Net Source)

Creates autostart registry keys with suspicious names

Detected njRat

Drops PE files to the startup folder

Found malware configuration

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

Self deletion via cmd delete

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

Uses netsh to modify the Windows network and firewall settings

Uses ping.exe to check the status of other devices and networks

Uses ping.exe to sleep

Yara detected Njrat

Behaviour

Behavior Graph:

Download SVG

Detection:

njrat

Link:

https://mwdb.cert.pl/sample/75446fb55096722788991655a418ca6c1b786becfbc7a41694a6e673aa32446c/

Threat name:

ByteCode-MSIL.Backdoor.Bladabhindi

Status:

Malicious

First seen:

2022-02-01 15:37:07 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

28 of 28 (100.00%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=ovcg7nkqszzcpcezczk2iggknqnxq27m7pd2ifuuu3thhkrsirwa._file

Verdict:

malicious

Label(s):

njrat

Result

Malware family:

njrat

Score:

10/10

Tags:

family:njrat botnet:prueba evasion persistence suricata trojan

Link:

https://tria.ge/reports/220201-s2ggsaggem/

Behaviour

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Adds Run key to start application

Drops startup file

Loads dropped DLL

Executes dropped EXE

Modifies Windows Firewall

njRAT/Bladabindi

suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)

Malware Config

C2 Extraction:

111.90.149.115:10443

Unpacked files

SH256 hash:

75446fb55096722788991655a418ca6c1b786becfbc7a41694a6e673aa32446c

MD5 hash:

bef12f51bc6aa8bd332aca14a02192be

SHA1 hash:

b1b8ae36b3458f37cbc62274b110a2cd36959a2b

Detections:

win_njrat_w1

win_njrat_g1

Link:

https://www.unpac.me/results/a40c7786-6012-4d96-bd6f-1d4b181c20c9/

Malware family:

njRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/75446fb55096/report/overview.html

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

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/75446fb55096722788991655a418ca6c1b786becfbc7a41694a6e673aa32446c

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:	CN_disclosed_20180208_c_RID2E71 Create hunting rule
Author:	Florian Roth
Description:	Detects malware from disclosed CN malware set
Reference:	https://twitter.com/cyberintproject/status/961714165550342146

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

Rule name:	MALWARE_Win_NjRAT Create hunting rule
Author:	ditekSHen
Description:	Detects NjRAT / Bladabindi

Rule name:	pe_imphash Create hunting rule

Rule name:	Skystars_LightDefender_Njrat_Rule Create hunting rule
Author:	Skystars LightDefender
Description:	Detects Njrat

Rule name:	Skystars_Malware_Imphash Create hunting rule
Author:	Skystars LightDefender
Description:	imphash

Rule name:	win_njrat_w1 Create hunting rule
Author:	Brian Wallace @botnet_hunter <bwall@ballastsecurity.net>
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 75446fb55096722788991655a418ca6c1b786becfbc7a41694a6e673aa32446c

(this sample)

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/229204/

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