MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 506a965b3ff38511a183d9c2fb9a404e54e211ab42acf9293696bcb142bbd3e3. 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: 17


Intelligence 17 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 506a965b3ff38511a183d9c2fb9a404e54e211ab42acf9293696bcb142bbd3e3
SHA3-384 hash: eaa6b3178f8bf55fb7b6c490441825855fa6ddb0843256fdb1ee8c8c0d93a5e37a76752bb8709d20887e5fdd2568dcc7
SHA1 hash: 090225b74c9192c56823344e6bf280feafb3a0d4
MD5 hash: 88b3d7e373d59ff72990f93d3f733ebd
humanhash: pip-green-delta-indigo
File name:506a965b3ff38511a183d9c2fb9a404e54e211ab42acf9293696bcb142bbd3e3
Download: download sample
Signature njrat
Create hunting rule
File size:1'809'408 bytes
First seen:2025-12-08 15:24:04 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'859 x AgentTesla, 19'787 x Formbook, 12'305 x SnakeKeylogger)
ssdeep 24576:v4vpmLVywY2cKEQWHR6hP9GLp2fT0LfzT+CPz8Y647bYfPl7Ybt4EuW:qp6u2c1Q86P+2YH/8BiYfP9YZVuW
Threatray 51 similar samples on MalwareBazaar
TLSH T13985AC4E1914BE14D1AD3AF5002ED4781FA71DE6AFD8E189789738CA3BB23AE0510F57
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
dhash icon 13332f0f0f3b3333 (12 x AgentTesla, 1 x VIPKeylogger, 1 x njrat)
Reporter adrian__luca
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
110
Origin country :
HU HU
Vendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
RoboSki
a Base64 + XOR/Sub-decrypted component, its associated key, a mutex, a filename, and ReZer0 configuration parameters including: a load type, a download URL and filename (if configured), an interval (if configured), and varying flags
RoboSki
an extracted ReZer0 payload
Link:
https://research.acce.ciphertechsolutions.com/results/04a7e23d-7765-4d04-9b0a-fa37afc8007c/
Malware family:
n/a
ID:
1
File name:
506a965b3ff38511a183d9c2fb9a404e54e211ab42acf9293696bcb142bbd3e3
Verdict:
Malicious activity
Analysis date:
2025-12-08 23:11:51 UTC
Tags:
phishing evasion auto-sch-xml stealer pulsar rat crypto-regex
Link:
https://app.any.run/tasks/a8dd35e9-4d92-4d70-b7fb-e2329b2a62ff

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/43475/
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6936ee4f881313558a2b91fd
Tags:
shell msil remo
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
Creating a window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
DNS request
Connection attempt
Using the Windows Management Instrumentation requests
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/506a965b3ff38511a183d9c2fb9a404e54e211ab42acf9293696bcb142bbd3e3
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-20T00:22:00Z UTC
Last seen:
2025-12-10T08:17:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/506a965b3ff38511a183d9c2fb9a404e54e211ab42acf9293696bcb142bbd3e3/results?tab=lookup
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/97513eae-c1c4-4171-bf8a-139abdbd570f
Score:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/506a965b3ff38511a183d9c2fb9a404e54e211ab42acf9293696bcb142bbd3e3
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.23 Win 32 Exe x86
Link:
https://app.malva.re/file/88b3d7e373d59ff72990f93d3f733ebd
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/506a965b3ff38511a183d9c2fb9a404e54e211ab42acf9293696bcb142bbd3e3/
Threat name:
ByteCode-MSIL.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2025-11-20 04:15:16 UTC
AV detection:
21 of 38 (55.26%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kbvjmwz76ocrdimd3hbpxgsajzkoeenlikwpskjws26lcqv32prq._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
unc_loader_078
Create hunting rule
quasarrat
Create hunting rule
Similar samples:
1dc40d185826d3b1017c756cc2451548fa4236bbb0e8fd721b5e4c58857202c3
njrat
29a4c0f7bc2396d392fff511532e04766555c31e3ba854a8784edfa7184e05c7
njrat
da957a6c7634511d1469f0b827a678f3c5e6ad8c46ba10a02e707a20836d7b0c
njrat
dbdb5cabf0e5480c8d7aa1ea7958be25b60bf5105a80247fc1be4d7082487038
njrat
+ 41 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar discovery execution persistence spyware stealer trojan
Link:
https://tria.ge/reports/251208-stan9syqgr/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
Quasar RAT
Quasar family
Quasar payload
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/844b6977-5a1a-4910-8490-e3ba97f2f783
Unpacked files
SH256 hash:
506a965b3ff38511a183d9c2fb9a404e54e211ab42acf9293696bcb142bbd3e3
MD5 hash:
88b3d7e373d59ff72990f93d3f733ebd
SHA1 hash:
090225b74c9192c56823344e6bf280feafb3a0d4
Link:
https://www.unpac.me/results/9649634a-adfd-4fd1-9fb4-e425a826af12/
SH256 hash:
111e88b06ab4bda9dcea292177f2fbf656f056ee3bc315aea8861653872867a4
MD5 hash:
ca046727926a963297a6f802f7f59312
SHA1 hash:
49c2d05a1f1ea2530c2b54c1450b70ab1595175c
Link:
https://www.unpac.me/results/9649634a-adfd-4fd1-9fb4-e425a826af12/
SH256 hash:
c5b789fbc3a0179cb4744b110a656dca5187f8bbe16efa6d95ac58fc29597628
MD5 hash:
b773cbe88330ab4ca1f00d5ad580f0d2
SHA1 hash:
8e5226938e54610a634b083e2304d0cade0a5cd4
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/9649634a-adfd-4fd1-9fb4-e425a826af12/
SH256 hash:
ce86166462ed2ebb88a0b22ea7053852e065119714853c9d1ffb11ed2b3b2be9
MD5 hash:
4b9a68828a8dda8f0f34cb5575ea5679
SHA1 hash:
baf9bc6bf0f9cbe5ba81c55eb0e111580d73760e
Detections:
QuasarRAT
Create hunting rule
cn_utf8_windows_terminal
Create hunting rule
malware_windows_xrat_quasarrat
Create hunting rule
MAL_BackNet_Nov18_1
Create hunting rule
INDICATOR_EXE_Packed_Fody
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
Link:
https://www.unpac.me/results/9649634a-adfd-4fd1-9fb4-e425a826af12/
SH256 hash:
2f810da956fed7faf74c8ce2cf65638ccdaa92b282dc7492592d7aedce280c44
MD5 hash:
0020b06dc2018cc2b5bf98945a39cbd3
SHA1 hash:
71ad34cd9f4f3ee2328ca1c7a64a576499208f43
Detections:
SUSP_NET_Large_Static_Array_In_Small_File_Jan24
Create hunting rule
HKTL_NET_GUID_Quasar
Create hunting rule
Link:
https://www.unpac.me/results/9649634a-adfd-4fd1-9fb4-e425a826af12/
Parent samples :
506a965b3ff38511a183d9c2fb9a404e54e211ab42acf9293696bcb142bbd3e3
696352b6b7c282736cb240651682b07a5feaa68ac065e9128f946779db00b02b
c57c030654ed282e9a79d9e94d4c75def4c66333e39dae059580e68ab1bdad94
7192f8dc0173afc11ee73bfa161560c712a3b26aff10c82a9c1ec3719690fd88
2f810da956fed7faf74c8ce2cf65638ccdaa92b282dc7492592d7aedce280c44
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/506a965b3ff3/report/overview.html
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/506a965b3ff38511a183d9c2fb9a404e54e211ab42acf9293696bcb142bbd3e3

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:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/43475/

Comments