MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b017cdb6f137cd3e72e7524470ebf2ff2712cc5f78db58d6eb87b15b4a84184f. 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 2 YARA 17 File information Comments

SHA256 hash:	b017cdb6f137cd3e72e7524470ebf2ff2712cc5f78db58d6eb87b15b4a84184f
SHA3-384 hash:	4404b98fa368fba538825ac7822752a321612eafd77fa3c53ac8dc8569f5f16c94e86728eaa5a3f17dc1c367006bef1e
SHA1 hash:	8aa42ff563940254ed39e8397e08bb2a2a91fdd6
MD5 hash:	79bb3776371472c8a14897893c2c17e3
humanhash:	utah-beryllium-minnesota-carbon
File name:	B017CDB6F137CD3E72E7524470EBF2FF2712CC5F78DB5.exe
Download:	download sample
Signature	njrat Create hunting rule
File size:	2'568'192 bytes
First seen:	2022-04-06 00:58:59 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep	49152:/hCQGVrh9tSBzKPBc0IQekGPlUXd07t2vM/M:5CQGVftSBePBc0skGPlUXdRUE
Threatray	918 similar samples on MalwareBazaar
TLSH	T1D4C5BF52B581C872D0A20131827ACBF209BDAD30DB2554DBA7C43D5B7E345D27B3A7AB
File icon (PE):
dhash icon	61c4cea6868cf069 (1 x njrat)
Reporter	abuse_ch
Tags:	exe NjRAT RAT

abuse_ch

njrat C2:
154.237.244.50:6060

Indicators Of Compromise (IOCs)

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

IOC	ThreatFox Reference
154.237.244.50:6060	https://threatfox.abuse.ch/ioc/513938/
154.237.244.50:1177	https://threatfox.abuse.ch/ioc/513939/

Intelligence

File Origin

# of uploads :

# of downloads :

463

Origin country :

n/a

Vendor Threat Intelligence

Detection:

njRat

Link:

https://www.capesandbox.com/analysis/261120/

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

Creating a file

Creating a process from a recently created file

Creating a window

Creating a file in the %temp% directory

Creating a process with a hidden window

Searching for synchronization primitives

Using the Windows Management Instrumentation requests

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

Query of malicious DNS domain

Sending a TCP request to an infection source

Enabling autorun by creating a file

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

hacktool njrat obfuscated rat stealer

Link:

https://www.filescan.io/uploads/624ce5da40ce5db9f414e9ea/reports/11d8564c-8355-4085-a7e6-9f29bdb50331/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.

Malware family:

Naikon

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/b4ed3486-2716-4cf2-a6d4-5196f8fe9a67

Result

Threat name:

njRat BrowserPasswordDump Tool EmailPass

Detection:

malicious

Classification:

troj.adwa.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/971250

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

Detected unpacking (overwrites its own PE header)

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 domain / URL

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 dynamic DNS services

Uses netsh to modify the Windows network and firewall settings

Yara detected BrowserPasswordDump Tool by SecurityXploded

Yara detected EmailPasswordDump Tool by SecurityXploded

Yara detected FTPPasswordDump Tool by SecurityXploded

Yara detected Njrat

Behaviour

Behavior Graph:

Download SVG

Detection:

njrat

Link:

https://mwdb.cert.pl/sample/b017cdb6f137cd3e72e7524470ebf2ff2712cc5f78db58d6eb87b15b4a84184f/

Threat name:

ByteCode-MSIL.Backdoor.Bladabhindi

Status:

Malicious

First seen:

2022-02-06 23:22:07 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

37 of 42 (88.10%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=wal43nxrg7gt44xhkjchb27s74trftc7pdnvrvxlq6yvwsuedbhq._file

Verdict:

malicious

Label(s):

njrat

Result

Malware family:

njrat

Score:

10/10

Tags:

family:njrat botnet:atyuyewsxxcfzsty evasion persistence trojan

Link:

https://tria.ge/reports/220406-bb2xcsfgh2/

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

Malware Config

C2 Extraction:

ffy643dfxvtesdyekyg.ddns.net:6060

Unpacked files

SH256 hash:

b017cdb6f137cd3e72e7524470ebf2ff2712cc5f78db58d6eb87b15b4a84184f

MD5 hash:

79bb3776371472c8a14897893c2c17e3

SHA1 hash:

8aa42ff563940254ed39e8397e08bb2a2a91fdd6

Detections:

win_njrat_w1

win_njrat_g1

Link:

https://www.unpac.me/results/6041c59f-f8f8-4c09-8dc3-4a0efc5dd230/

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

Threat name:

NJRat

Score:

0.90

Link:

https://yomi.yoroi.company/submissions/b017cdb6f137cd3e72e7524470ebf2ff2712cc5f78db58d6eb87b15b4a84184f

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:	HackTool_Samples Create hunting rule
Description:	Hacktool

Rule name:	INDICATOR_SUSPICIOUS_Binary_References_Browsers Create hunting rule
Author:	ditekSHen
Description:	Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

Rule name:	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

Rule name:	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many email and collaboration clients. Observed in information stealers

Rule name:	INDICATOR_TOOL_PWS_SecurityXploded_BrowserPasswordDumper Create hunting rule
Author:	ditekSHen
Description:	Detects SecurityXploded Browser Password Dumper tool

Rule name:	INDICATOR_TOOL_PWS_SecurityXploded_EmailPasswordDumper Create hunting rule
Author:	ditekSHen
Description:	Detects SecurityXploded Email Password Dumper tool

Rule name:	INDICATOR_TOOL_PWS_SecurityXploded_FTPPasswordDumper Create hunting rule
Author:	ditekSHen
Description:	Detects SecurityXploded FTP Password Dumper tool

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:	MAL_njrat Create hunting rule
Author:	SECUINFRA Falcon Team

Rule name:	pe_imphash Create hunting rule

Rule name:	RAT_njRat Create hunting rule
Author:	Kevin Breen <kevin@techanarchy.net>
Description:	Detects njRAT
Reference:	http://malwareconfig.com/stats/njRat

Rule name:	SecurityXploded_Producer_String Create hunting rule
Author:	Florian Roth
Description:	Detects hacktools by SecurityXploded
Reference:	http://securityxploded.com/browser-password-dump.php

Rule name:	SecurityXploded_Producer_String_RID33B2 Create hunting rule
Author:	Florian Roth
Description:	Detects hacktools by SecurityXploded
Reference:	http://securityxploded.com/browser-password-dump.php

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.

Cape

https://www.capesandbox.com/analysis/261120/

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