MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 309def552c446ea54ce932da7546242ccf13b5878c44a9b7f7b23237ff5d1edb. 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: 12

Intelligence 12 IOCs 4 YARA 9 File information Comments 1

SHA256 hash:	309def552c446ea54ce932da7546242ccf13b5878c44a9b7f7b23237ff5d1edb
SHA3-384 hash:	c98be418ed5ff466d4d23ac471d7682102e1703c3c82d227a3c58b85866292b95542e5fa58b9320c61c67c410e095b21
SHA1 hash:	d74c7184a92603ff8197ccb1b3140488f8acebbc
MD5 hash:	89a4c7b8dab99fe791ebae52524536b7
humanhash:	purple-lamp-east-coffee
File name:	89a4c7b8dab99fe791ebae52524536b7.exe
Download:	download sample
Signature	njrat Create hunting rule
File size:	32'256 bytes
First seen:	2021-05-06 18:51:12 UTC
Last seen:	2021-05-06 19:01:04 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep	768:jYmqnf1Ll58zx36DLergHX5VvYFQmIDUu0tiofj:cB9q/ePAQVkjj
Threatray	72 similar samples on MalwareBazaar
TLSH	02E21AADFBFA4465D2BD0AB50571950113B4E003E523E77E4ECA24A62B6B3D84B84DF2
Reporter	abuse_ch
Tags:	exe NjRAT RAT

abuse_ch

njrat C2:
3.125.102.39:16836

Indicators Of Compromise (IOCs)

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

IOC	ThreatFox Reference
3.125.102.39:16836	https://threatfox.abuse.ch/ioc/30535/
3.124.142.205:16836	https://threatfox.abuse.ch/ioc/30536/
18.192.31.165:16836	https://threatfox.abuse.ch/ioc/30537/
18.158.249.75:16836	https://threatfox.abuse.ch/ioc/30538/

Intelligence

File Origin

# of uploads :

# of downloads :

179

Origin country :

n/a

Vendor Threat Intelligence

Detection:

njRat

Link:

https://www.capesandbox.com/analysis/151856/

Result

Verdict:

Malware

Maliciousness:

Behaviour

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

Creating a window

DNS request

Using the Windows Management Instrumentation requests

Sending a custom TCP request

Sending a UDP request

Unauthorized injection to a recently created process

Launching the process to change the firewall settings

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/382a680e-aa69-4370-962e-cc573f2f872e

Result

Threat name:

njRat

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/714605

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

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/309def552c446ea54ce932da7546242ccf13b5878c44a9b7f7b23237ff5d1edb/

Threat name:

ByteCode-MSIL.Backdoor.Bladabhindi

Status:

Malicious

First seen:

2021-05-05 17:08:00 UTC

AV detection:

27 of 29 (93.10%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=gco66vjmirxkkthjglnhkrrefthrhnmhrrcktn7xwizdp725d3nq._file

Result

Malware family:

njrat

Score:

10/10

Tags:

family:njrat evasion trojan

Link:

https://tria.ge/reports/210506-vrqycqjqb6/

Behaviour

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Loads dropped DLL

Executes dropped EXE

Modifies Windows Firewall

njRAT/Bladabindi

Unpacked files

SH256 hash:

309def552c446ea54ce932da7546242ccf13b5878c44a9b7f7b23237ff5d1edb

MD5 hash:

89a4c7b8dab99fe791ebae52524536b7

SHA1 hash:

d74c7184a92603ff8197ccb1b3140488f8acebbc

Detections:

win_njrat_w1

win_njrat_g1

Link:

https://www.unpac.me/results/ec2ba4dd-8b64-497d-b318-dc532d501c43/

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/309def552c446ea54ce932da7546242ccf13b5878c44a9b7f7b23237ff5d1edb

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

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

Rule name:	pe_imphash Create hunting rule

Rule name:	Ping_Del_method_bin_mem Create hunting rule
Author:	James_inthe_box
Description:	cmd ping IP nul del

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/151856/

Comments

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a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-05-06 18:59:26 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [B0009] Anti-Behavioral Analysis::Virtual Machine Detection