MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4f9ca6b3ec56724419b4c95a41fb125f86493b0b8650d9780f2fef3779adb037. 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 6 YARA 13 File information Comments

SHA256 hash:	4f9ca6b3ec56724419b4c95a41fb125f86493b0b8650d9780f2fef3779adb037
SHA3-384 hash:	ca289d8abd27bae575210ed6847db2dc87d935fc173a48ca4fe549cbe9c41b687b21a0076a8224d32286ecc5af909fce
SHA1 hash:	d0dc657f55a68406497a7498ebaa1232ba4e28c7
MD5 hash:	b72c449fc132bfad765e09719cdc2edd
humanhash:	florida-sixteen-mexico-papa
File name:	b72c449fc132bfad765e09719cdc2edd.exe
Download:	download sample
Signature	njrat Create hunting rule
File size:	32'256 bytes
First seen:	2022-04-13 18:21:24 UTC
Last seen:	2022-04-19 20:32:38 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'653 x AgentTesla, 19'464 x Formbook, 12'205 x SnakeKeylogger)
ssdeep	768:jPwoqkZlH/azx1+ta+q3U97v8+QmIDUu0tirAj:m4qSp7QVkJj
Threatray	610 similar samples on MalwareBazaar
TLSH	T157E22A6DFBF64466D2BC0AB50571950013B4E003E523F77E4ECA24E62B6B6D84B98DF2
Reporter	abuse_ch
Tags:	exe NjRAT RAT

abuse_ch

njrat C2:
3.129.187.220:11645

Indicators Of Compromise (IOCs)

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

IOC	ThreatFox Reference
3.129.187.220:11645	https://threatfox.abuse.ch/ioc/519133/
3.22.15.135:11645	https://threatfox.abuse.ch/ioc/519134/
3.133.207.110:11645	https://threatfox.abuse.ch/ioc/519135/
3.136.65.236:11645	https://threatfox.abuse.ch/ioc/519136/
3.131.147.49:11645	https://threatfox.abuse.ch/ioc/519137/
3.138.180.119:11645	https://threatfox.abuse.ch/ioc/519138/

Intelligence

File Origin

# of uploads :

# of downloads :

549

Origin country :

n/a

Vendor Threat Intelligence

Malware family:

njrat

ID:

File name:

b72c449fc132bfad765e09719cdc2edd.exe

Verdict:

Malicious activity

Analysis date:

2022-04-13 18:23:50 UTC

Tags:

trojan rat njrat bladabindi

Link:

https://app.any.run/tasks/87b9f008-6ad0-46fa-b08b-a162a94e41bd

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

njRat

Link:

https://www.capesandbox.com/analysis/263502/

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Launching a process

Сreating synchronization primitives

Creating a file in the %temp% directory

Creating a process from a recently created file

Creating a file

Creating a process with a hidden window

Searching for synchronization primitives

DNS request

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

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm bladabindi cmd.exe control.exe fingerprint greyware keylogger netsh.exe njrat obfuscated packed rat replace.exe stealer update.exe winnti

Link:

https://www.filescan.io/uploads/625714ceffe27d5119c4a832/reports/f7f877f1-1559-42f1-8bed-3af318105f9b/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:

njRAT

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/a793e4a8-ac4a-4933-a254-718d6971bcd5

Result

Threat name:

njRat

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/976393

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)

Detected njRat

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

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:

n/a

Link:

https://mwdb.cert.pl/sample/4f9ca6b3ec56724419b4c95a41fb125f86493b0b8650d9780f2fef3779adb037/

Threat name:

ByteCode-MSIL.Backdoor.Bladabhindi

Status:

Malicious

First seen:

2022-04-10 13:26:00 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

25 of 26 (96.15%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=j6oknm7mkzzeignuzfned6ysl6desoylqzins6apf7xto6nnwa3q._file

Verdict:

malicious

Label(s):

njrat

1c5952df10f0fdb566f748c18ef3b101825937c75cd26fa716a79298dbb343db

njrat

285b6700d98397dafa08816710eec9724407d49e270245e9a994c5ee8f9a40b4

njrat

309def552c446ea54ce932da7546242ccf13b5878c44a9b7f7b23237ff5d1edb

njrat

434c3b5ab0a2b53e04e4cdf6df69ab626919e3f5b9cffde95e178fe975d463b4

njrat

54622fa73246157a2e25e418d554d5ccafc663151ac067819d18f48caad9a32c

njrat

d62f0e86c54f465b93bdab28f2ccc770999db63f8c69c937afcf66f9029eae3f

njrat

+ 600 additional samples on MalwareBazaar

Result

Malware family:

njrat

Score:

10/10

Tags:

family:njrat botnet:mybot evasion trojan

Link:

https://tria.ge/reports/220413-wzwepsefd4/

Behaviour

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Loads dropped DLL

Executes dropped EXE

Modifies Windows Firewall

njRAT/Bladabindi

Malware Config

C2 Extraction:

4.tcp.ngrok.io:11645

Unpacked files

SH256 hash:

4f9ca6b3ec56724419b4c95a41fb125f86493b0b8650d9780f2fef3779adb037

MD5 hash:

b72c449fc132bfad765e09719cdc2edd

SHA1 hash:

d0dc657f55a68406497a7498ebaa1232ba4e28c7

Detections:

win_njrat_g1

win_njrat_w1

Link:

https://www.unpac.me/results/e57d59a1-5fd2-4366-8f20-31362eb66be2/

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/4f9ca6b3ec56724419b4c95a41fb125f86493b0b8650d9780f2fef3779adb037

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:	MAL_njrat Create hunting rule
Author:	SECUINFRA Falcon Team

Rule name:	MAL_Winnti_Sample_May18_1 Create hunting rule
Author:	Florian Roth
Description:	Detects malware sample from Burning Umbrella report - Generic Winnti Rule
Reference:	https://401trg.pw/burning-umbrella/

Rule name:	MAL_Winnti_Sample_May18_1_RID3003 Create hunting rule
Author:	Florian Roth
Description:	Detects malware sample from Burning Umbrella report - Generic Winnti Rule
Reference:	https://401trg.pw/burning-umbrella/

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:	SUSP_netsh_firewall_command Create hunting rule
Author:	SECUINFRA Falcon Team

Rule name:	SUSP_Ngrok_URL Create hunting rule
Author:	SECUINFRA Falcon Team
Description:	Detects a PE file that contains an ngrok.io URL. This can be used as C2 channel

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/263502/

Comments

Login required

You need to login to in order to write a comment. Login with your abuse.ch account.

No comments found for this malware sample