MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 4b9969f9518f7b1bc9c55e08a0510f107132e97b8b34df2fc1d07a96d0be1f31. 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: 11
| SHA256 hash: | 4b9969f9518f7b1bc9c55e08a0510f107132e97b8b34df2fc1d07a96d0be1f31 |
|---|---|
| SHA3-384 hash: | 3be83d548f4abcf60d469927091c02e641868e7c0dabea99dc9b8cb4d32931530db088fe43a8747e554cc3d0fbdf6683 |
| SHA1 hash: | c2616354364e6ac252236fc98c9ff18875f2c173 |
| MD5 hash: | 1fb31a9d7324e9405bff6e0c5a641aa4 |
| humanhash: | yankee-purple-north-rugby |
| File name: | 74PHn4sg.exe |
| Download: | download sample |
| Signature | njrat |
| File size: | 32'256 bytes |
| First seen: | 2020-10-13 23:02:21 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger) |
| ssdeep | 768:rymqJf1Ll58zx36D14Vg3F5Vv6rQmIDUu0tiWoj:+/9qXKP0QVkuj |
| Threatray | 35 similar samples on MalwareBazaar |
| TLSH | 2AE21BADFBE64466D1BD1AB50571950013B4E003E523FB7E4ECA24A62B7B3D84B84DF2 |
| Reporter |  pmelson |
| Tags: | exe NjRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
195
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Njrat
Result
Verdict:
Malware
Maliciousness:
Behaviour
Sending a UDP request
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
Unauthorized injection to a recently created process
Launching the process to change the firewall settings
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Result
Threat name:
njRat
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
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 with benign system names
Injects code into the Windows Explorer (explorer.exe)
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: 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
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Yara detected Njrat
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Status:
Malicious
First seen:
2020-10-13 23:04:07 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Similar samples:
+ 25 additional samples on MalwareBazaar
Result
Malware family:
njrat
Score:
10/10
Tags:
evasion persistence trojan family:njrat
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Modifies service
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Modifies Windows Firewall
njRAT/Bladabindi
Unpacked files
SH256 hash:
4b9969f9518f7b1bc9c55e08a0510f107132e97b8b34df2fc1d07a96d0be1f31
MD5 hash:
1fb31a9d7324e9405bff6e0c5a641aa4
SHA1 hash:
c2616354364e6ac252236fc98c9ff18875f2c173
Detections:
win_njrat_w1
win_njrat_g1
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
NJRat
Score:
1.00
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 |
|---|---|
| Author: | Florian Roth |
| Description: | Detects malware from disclosed CN malware set |
| Reference: | https://twitter.com/cyberintproject/status/961714165550342146 |
| Rule name: | MAL_Winnti_Sample_May18_1 |
|---|---|
| Author: | Florian Roth |
| Description: | Detects malware sample from Burning Umbrella report - Generic Winnti Rule |
| Reference: | https://401trg.pw/burning-umbrella/ |
| Rule name: | Njrat |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect njRAT in memory |
| Rule name: | Ping_Del_method_bin_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | cmd ping IP nul del |
| Rule name: | win_njrat_w1 |
|---|---|
| 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
Delivery method
Distributed via web download
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