MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 66f7b791ad2fba2a0f3d9730a463b0653f9c336923f23fc3826bc80079538d62. 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: 8


Intelligence 8 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 66f7b791ad2fba2a0f3d9730a463b0653f9c336923f23fc3826bc80079538d62
SHA3-384 hash: c0882e801709161c0b1137c95e1c59637868d45f1fc54c5ef6efe6a0b2912be3bcb416bde0c16714849a5e8a050204cd
SHA1 hash: 7d2ad13a2d4a5938511701c5d465e5ac7ae6ec16
MD5 hash: 53be935e1fe2f896e67ffb74cffc746a
humanhash: orange-may-steak-two
File name:2tMb7Wiy.exe
Download: download sample
Signature njrat
Create hunting rule
File size:37'888 bytes
First seen:2020-09-23 10:32:39 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 384:sMUCT0i9rdTe/kCOyU77knZcDfm2drAF+rMRTyN/0L+EcoinblneHQM3epzXfNrM:HZJ1CFU77k67murM+rMRa8NulWt
Threatray 57 similar samples on MalwareBazaar
TLSH 08032A4D7BE18168C4FD167706B2D4120BBBE14B6E23D90E8EF6649A37736C18B50AF1
Reporter pmelson
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
133
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Njrat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/64794/
Detection(s):
Win.Trojan.B-468
Create hunting rule

Win.Trojan.Generic-6417450-0
Create hunting rule

Win.Trojan.Generic-6454614-0
Create hunting rule

Win.Trojan.Generic-6454615-0
Create hunting rule

Win.Dropper.njRAT-7436651-0
Create hunting rule

Win.Packed.Generic-7672854-0
Create hunting rule

Win.Packed.Generic-7672855-0
Create hunting rule

Win.Packed.njRAT-7672853-1
Create hunting rule

Win.Packed.Bladabindi-7994427-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a process with a hidden window
Enabling the 'hidden' option for analyzed file
Creating a window
Using the Windows Management Instrumentation requests
Sending a custom TCP request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Launching the process to change the firewall settings
Enabling autorun by creating a file
Result
Threat name:
njRat
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/473215
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
Contains functionality to log keystrokes (.Net Source)
Creates autostart registry keys with suspicious names
Detected njRat
Drops PE files to the startup folder
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
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/66f7b791ad2fba2a0f3d9730a463b0653f9c336923f23fc3826bc80079538d62/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2020-09-23 10:34:22 UTC
AV detection:
28 of 29 (96.55%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=m333pennf65cudz5s4ykiy5qmu7zym3jepzd7q4cnpeaa6ktrvra._file
Verdict:
malicious
Similar samples:
14262b3cd2627ba46dca74fa62e17a3ecb3853982a81a8e39a0c41a5077974c4
njrat
27f7e212954191d2fc10676ad69942421e904a5719cb2001149de2bb38c0610f
njrat
62a5cd1fc65cdb2b773565e9861a48f139ee961156b38e26016c28a23fc896cc
njrat
6739301df01608fd2317175f72add2c77d998e16d5b37b30c6940a468a478d7a
njrat
674e6af13bc6b40d023c0d9306b7ba538f8dc7110da48067174858b605851aa1
njrat
848d738d56a8b14c89c4ffea4bdba3390d70004c081785de07af4fc541f146ec
njrat
9d1f32d9806bafd63451a59e1768502f31cf9dc746c9e92f62b978c1ed259497
njrat
b3bb77a17e54a662b6fed76d2537ad3a27ec2ab051f913a9aa1207219d96c30f
njrat
dc7f689cc6adbf5d8e36008390ed2a79d59d0d3411f9e353ddacf236e695a615
njrat
ed34d4eba0bc7d434f32bb9bca0147632592656ddf0c2aa892fbee54b0850ff1
njrat
+ 47 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
persistence evasion
Link:
https://tria.ge/reports/200923-cre4p1dkhn/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Modifies service
Adds Run key to start application
Adds Run key to start application
Drops startup file
Drops startup file
Modifies Windows Firewall
Modifies Windows Firewall
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/66f7b791ad2fba2a0f3d9730a463b0653f9c336923f23fc3826bc80079538d62

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:win_njrat_w1
Create hunting rule
Author:Brian Wallace @botnet_hunter
Description:Identify njRat

File information

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

Web download

njrat

Executable exe 66f7b791ad2fba2a0f3d9730a463b0653f9c336923f23fc3826bc80079538d62

(this sample)

  
Link
https://www.virustotal.com/gui/file/66f7b791ad2fba2a0f3d9730a463b0653f9c336923f23fc3826bc80079538d62/detection
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/64794/

Comments