MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 66a7c6538eff28587daeb73436b616207e89aa0c6e8c59e15d07f203f4efef21. 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: 18

Intelligence 18 IOCs YARA 23 File information Comments

SHA256 hash:	66a7c6538eff28587daeb73436b616207e89aa0c6e8c59e15d07f203f4efef21
SHA3-384 hash:	04b88008c0c663c3bacd2dd731ae8497e5227805779056011925f57f12942694382b5857ab192ad7108136e988e09be6
SHA1 hash:	28ba8fa8451acb8da97626b02721c9c7698b6315
MD5 hash:	462c93621089c577de624767fee930b7
humanhash:	golf-undress-asparagus-low
File name:	462c93621089c577de624767fee930b7.exe
Download:	download sample
Signature	njrat Create hunting rule
File size:	95'232 bytes
First seen:	2024-08-11 06:58:04 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'854 x AgentTesla, 19'783 x Formbook, 12'304 x SnakeKeylogger)
ssdeep	1536:6URs5p8k2HGjTpL5HoTjEwzGi1dD9DigS:6Ubk2HGjtL5IYi1dRH
Threatray	451 similar samples on MalwareBazaar
TLSH	T17293E74977E52524E1BF5AF79471F2014F34B44B1602E39E48F219AA1B33AC44F89FEA
TrID	60.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.8% (.SCR) Windows screen saver (13097/50/3) 8.7% (.EXE) Win64 Executable (generic) (10523/12/4) 5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter	abuse_ch
Tags:	exe NjRAT

Intelligence

File Origin

# of uploads :

# of downloads :

400

Origin country :

Vendor Threat Intelligence

Malware family:

njrat

ID:

File name:

462c93621089c577de624767fee930b7.exe

Verdict:

Malicious activity

Analysis date:

2024-08-11 07:07:14 UTC

Tags:

njrat

Link:

https://app.any.run/tasks/7ca4eaee-2002-48d6-a2fb-0fcbaf0a9fe3

Note:

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

Detection(s):

Win.Packed.Generic-9795615-0

Win.Dropper.njRAT-10015886-0

Win.Dropper.Nanocore-10030076-0

Win.Trojan.Generic-6417450-0

Win.Trojan.B-468

Win.Trojan.Ratenjay-1

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=66b8613aaa5b40be0aa00161

Tags:

Execution Network Stealth Msil

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm bladabindi cmd evasive explorer fingerprint fingerprint keylogger lolbin msconfig netsh njrat rat rundll32 schtasks stealer update vbnet winnti

Link:

https://www.filescan.io/uploads/66b86138702ad2411b1f3616/reports/2365b142-6788-44e2-b320-317951637448/overview

Verdict:

Malicious

Labled as:

MSIL.Krypt.Generic

Link:

https://www.hybrid-analysis.com/sample/66a7c6538eff28587daeb73436b616207e89aa0c6e8c59e15d07f203f4efef21

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/6932a338-3205-4d9b-8e87-9ead56f34069

Result

Threat name:

Njrat

Detection:

malicious

Classification:

spre.phis.troj.adwa.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1491205

Signature

.NET source code contains potential unpacker

AI detected suspicious sample

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Connects to many ports of the same IP (likely port scanning)

Contains functionality to disable the Task Manager (.Net Source)

Contains functionality to spread to USB devices (.Net source)

Disables zone checking for all users

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

Uses netsh to modify the Windows network and firewall settings

Yara detected Njrat

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/66a7c6538eff28587daeb73436b616207e89aa0c6e8c59e15d07f203f4efef21

Detection:

njrat

Link:

https://mwdb.cert.pl/sample/66a7c6538eff28587daeb73436b616207e89aa0c6e8c59e15d07f203f4efef21/

Threat name:

ByteCode-MSIL.Backdoor.njRAT

Status:

Malicious

First seen:

2024-08-07 12:26:53 UTC

AV detection:

23 of 24 (95.83%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=m2t4mu4o74ufq7now42dnnqweb7itkqmn2gftyk5a7zah5hp54qq._file

Verdict:

malicious

Label(s):

njrat

16e030019f05b734a973a0fafc0fb678d0eb2736cfd5159a7ea82ebf3c198170

njrat

4f3b8d1cfa5d84f0eaa63da7af72f0f8d844d2130bdd5324b97d508985bf8748

njrat

8f9a0a3430662a0c54deb0394287b0555c6963edcb9b0c8cb0f87962f17d0e87

njrat

a689b16dd9bfa6277ec62d9d0767b91326b3912066934a95c95f0a4ed0f57960

njrat

bd55b89d4b2189c1a2737653506e2f96244650c6411f47217cea8ab7d9b5fd27

njrat

c471b2d1d86cac31a117363ed55a71714aeec937f9a73977d2f2329914252f97

njrat

+ 441 additional samples on MalwareBazaar

Result

Malware family:

njrat

Score:

10/10

Tags:

family:njrat botnet:hacked discovery evasion persistence privilege_escalation

Link:

https://tria.ge/reports/240811-hr3l6azcjm/

Behaviour

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Event Triggered Execution: Netsh Helper DLL

System Location Discovery: System Language Discovery

Drops startup file

Modifies Windows Firewall

Malware Config

C2 Extraction:

hakim32.ddns.net:2000
java-stupid.gl.at.ply.gg:29578

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/063114ff-bc95-49ce-8f82-944669257ec8

Unpacked files

SH256 hash:

66a7c6538eff28587daeb73436b616207e89aa0c6e8c59e15d07f203f4efef21

MD5 hash:

462c93621089c577de624767fee930b7

SHA1 hash:

28ba8fa8451acb8da97626b02721c9c7698b6315

Detections:

Njrat

CN_disclosed_20180208_c

MAL_Winnti_Sample_May18_1

Link:

https://www.unpac.me/results/efe97bb9-81eb-4ce7-a122-78e47b0aef28/

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/66a7c6538eff28587daeb73436b616207e89aa0c6e8c59e15d07f203f4efef21

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 (Nextron Systems)
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:	Disable_Defender Create hunting rule
Author:	iam-py-test
Description:	Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen

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 / NjRAT Golden

Rule name:	MAL_njrat Create hunting rule
Author:	SECUINFRA Falcon Team

Rule name:	MAL_Winnti_Sample_May18_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
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:	Mal_WIN_NjRAT_RAT_PE Create hunting rule
Author:	Phatcharadol Thangplub
Description:	Use to detect NjRAT implant.

Rule name:	Multifamily_RAT_Detection Create hunting rule
Author:	Lucas Acha (http://www.lukeacha.com)
Description:	Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables

Rule name:	NETexecutableMicrosoft Create hunting rule
Author:	malware-lu

Rule name:	Njrat Create hunting rule
Author:	botherder https://github.com/botherder
Description:	Njrat

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:	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:	Windows_Trojan_Njrat_30f3c220 Create hunting rule

Rule name:	Windows_Trojan_Njrat_30f3c220 Create hunting rule
Author:	Elastic Security

Rule name:	Windows_Trojan_Njrat_eb2698d2 Create hunting rule
Author:	Elastic Security

Rule name:	win_njrat_strings_oct_2023 Create hunting rule
Author:	Matthew @ Embee_Research

File information

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

No further information available

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (HIGH_ENTROPY_VA)	high

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