MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 8b3d0f667e789aada31ebcff914bf61e811d33c9faf6205424e3b27bad4ffebb. 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
| SHA256 hash: | 8b3d0f667e789aada31ebcff914bf61e811d33c9faf6205424e3b27bad4ffebb |
|---|---|
| SHA3-384 hash: | 6903a2af29f189c33a34d6ae8e571a23c3021727f2068b692a0c9171d8c2a245a6ccbc77e70db664e64ecd55d17e88db |
| SHA1 hash: | 353c66abf7d6724160824af49157a691d92153fb |
| MD5 hash: | 305c779cf6ae966c23ac8d514935c068 |
| humanhash: | video-social-california-oven |
| File name: | RacfgkaP.exe |
| Download: | download sample |
| Signature | njrat |
| File size: | 38'400 bytes |
| First seen: | 2020-10-20 16:32:21 UTC |
| Last seen: | 2020-10-26 08:51:48 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger) |
| ssdeep | 768:OwkYq/wdwUjGiwyHw0/ppJYtdQzQbCMV4sK+jHY0:hLiUj6pwpkUQbqsKMHX |
| Threatray | 46 similar samples on MalwareBazaar |
| TLSH | 3D03075C73F48A31C5BE8BBB4831955203B19A078D13EA5F0DE5A0E52FB73859A04E7B |
| Reporter |  pmelson |
| Tags: | exe NjRAT |
Intelligence
File Origin
# of uploads :
3
# of downloads :
115
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
DNS request
Using the Windows Management Instrumentation requests
Sending a UDP request
Creating a file
Creating a process from a recently created file
Creating a process with a hidden window
Enabling the 'hidden' option for recently created files
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Launching the process to change the firewall settings
Creating a file in the mass storage device
Sending a TCP request to an infection source
Enabling autorun by creating a file
Enabling threat expansion on mass storage devices by creating the autorun.inf autorun file
Enabling a "Do not show hidden files" option
Result
Threat name:
Njrat
Detection:
malicious
Classification:
spre.troj.adwa.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
Changes the view of files in windows explorer (hidden files and folders)
Contains functionality to log keystrokes (.Net Source)
Contains functionality to spread to USB devices (.Net source)
Creates autostart registry keys with suspicious names
Detected unpacking (overwrites its own PE header)
Drops PE files to the startup folder
Drops PE files with benign system names
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies the windows firewall
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:
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Status:
Malicious
First seen:
2020-10-20 16:34:04 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Similar samples:
+ 36 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
8/10
Tags:
evasion persistence
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Modifies service
Adds Run key to start application
Drops startup file
Executes dropped EXE
Modifies Windows Firewall
Unpacked files
SH256 hash:
8b3d0f667e789aada31ebcff914bf61e811d33c9faf6205424e3b27bad4ffebb
MD5 hash:
305c779cf6ae966c23ac8d514935c068
SHA1 hash:
353c66abf7d6724160824af49157a691d92153fb
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: | 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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