MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fef984d0cfaacd9e1685f796788009e017649a9485e7927a61968007f6e05bcd. 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 1 YARA 10 File information Comments

SHA256 hash:	fef984d0cfaacd9e1685f796788009e017649a9485e7927a61968007f6e05bcd
SHA3-384 hash:	8270edbb335012c21bdba34bbfb5b0e30564aff9671bd4433674704907e6974450dfe7a113d5109df492005c86625c5d
SHA1 hash:	ec6fea140a61b235ffa0ffd1a1798bbd6a4587e8
MD5 hash:	ae0c2623c680904b9af5a98d6217cc3b
humanhash:	ink-twenty-winter-virginia
File name:	ae0c2623c680904b9af5a98d6217cc3b.exe
Download:	download sample
Signature	njrat Create hunting rule
File size:	32'256 bytes
First seen:	2022-02-08 03:11:53 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	768:gfDNAsptfHCzxtOeoAHa/mlzvKvQmIDUu0tiF6j:SKAafJ8QVkBj
Threatray	552 similar samples on MalwareBazaar
TLSH	T126E22C6DFBE64466D1BD0AB64571950003B8D103E523F77E4ECA24E62B2B7D84B84DF2
Reporter	abuse_ch
Tags:	exe NjRAT RAT

abuse_ch

njrat C2:
141.255.150.193:1177

Indicators Of Compromise (IOCs)

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

IOC	ThreatFox Reference
141.255.150.193:1177	https://threatfox.abuse.ch/ioc/382112/

Intelligence

File Origin

# of uploads :

# of downloads :

257

Origin country :

n/a

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

ae0c2623c680904b9af5a98d6217cc3b.exe

Verdict:

No threats detected

Analysis date:

2022-02-08 03:19:44 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/09d25575-8124-4120-bdd2-63dfdfdc09b3

Note:

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

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/237456/

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Сreating synchronization primitives

Creating a file

Creating a file in the Windows directory

Creating a process from a recently created file

Creating a process with a hidden window

Creating a window

Searching for synchronization primitives

DNS request

Using the Windows Management Instrumentation requests

Sending a custom TCP request

Creating a file in the mass storage device

Launching the process to change the firewall settings

Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch

Unauthorized injection to a system process

Enabling autorun by creating a file

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm 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/6201df874077c8b9a01efbb3/reports/ef6fc1c4-a3e4-43e6-aa64-bf4d818040e5/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/7fa09dea-64bd-4d5b-a52e-7d8ec60e3889

Result

Threat name:

njRat

Detection:

malicious

Classification:

troj.adwa.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/935753

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 an autostart registry key pointing to binary in C:\Windows

Creates autostart registry keys with suspicious names

Detected njRat

Drops executables to the windows directory (C:\Windows) and starts them

Drops PE files to the startup folder

Drops PE files with benign system names

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

Sigma detected: File Created with System Process Name

Sigma detected: Suspcious CLR Logs Creation

Sigma detected: Suspicious Svchost Process

Sigma detected: System File Execution Location Anomaly

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

System process connects to network (likely due to code injection or exploit)

Uses dynamic DNS services

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/fef984d0cfaacd9e1685f796788009e017649a9485e7927a61968007f6e05bcd/

Threat name:

ByteCode-MSIL.Backdoor.Bladabhindi

Status:

Malicious

First seen:

2022-02-04 23:09:53 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

38 of 43 (88.37%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=734yjugpvlgz4fuf66lhraaj4alwjguuqxtze6tbs2aap5xalpgq._file

Verdict:

malicious

Label(s):

njrat

1c5952df10f0fdb566f748c18ef3b101825937c75cd26fa716a79298dbb343db

njrat

6b6c079401e47ab7c10a16fec31f9e330b3730f0e9f925caa43368b95a421b5e

njrat

97445a651bd56279e64a3f4bf79e454205e00bc84c7b500b0e69e30a93e85075

njrat

d26cea6912e11e87d9fa8782f69b01d38c4e8d40c9548341629b8281f9aa2ab0

njrat

+ 542 additional samples on MalwareBazaar

Result

Malware family:

njrat

Score:

10/10

Tags:

family:njrat botnet:transformice evasion persistence trojan

Link:

https://tria.ge/reports/220208-dp7e4scef3/

Behaviour

Checks processor information in registry

Modifies data under HKEY_USERS

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Drops file in Windows directory

Adds Run key to start application

Drops startup file

Executes dropped EXE

Modifies Windows Firewall

njRAT/Bladabindi

Malware Config

C2 Extraction:

matthacking.duckdns.org:1177

Unpacked files

SH256 hash:

fef984d0cfaacd9e1685f796788009e017649a9485e7927a61968007f6e05bcd

MD5 hash:

ae0c2623c680904b9af5a98d6217cc3b

SHA1 hash:

ec6fea140a61b235ffa0ffd1a1798bbd6a4587e8

Detections:

win_njrat_w1

win_njrat_g1

Link:

https://www.unpac.me/results/b0abefe4-72b7-42a8-9096-43f6fcce8bd4/

Malware family:

Winnti Group

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/fef984d0cfaa/report/overview.html

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

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_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:	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/237456/

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