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
| 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 |
| File size: | 1'809'408 bytes |
| First seen: | 2025-12-08 15:24:04 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 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 |
| Reporter |  adrian__luca |
| Tags: | exe NjRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
71
Origin country :
HUVendor 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
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
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Verdict:
Malicious
Score:
99.1%
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%
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-20T00:22:00Z UTC
Last seen:
2025-12-10T08:17:00Z UTC
Hits:
~1000
Malware family:
Agent Tesla
Verdict:
Malicious
Score:
98%
Verdict:
Malware
File Type:
PE
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
Threat name:
ByteCode-MSIL.Backdoor.NanoCore
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
Verdict:
malicious
Label(s):
unc_loader_037
unc_loader_078
quasarrat
Similar samples:
+ 41 additional samples on MalwareBazaar
Result
Malware family:
quasar
Score:
10/10
Tags:
family:quasar discovery execution persistence spyware stealer trojan
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
Unpacked files
SH256 hash:
506a965b3ff38511a183d9c2fb9a404e54e211ab42acf9293696bcb142bbd3e3
MD5 hash:
88b3d7e373d59ff72990f93d3f733ebd
SHA1 hash:
090225b74c9192c56823344e6bf280feafb3a0d4
SH256 hash:
111e88b06ab4bda9dcea292177f2fbf656f056ee3bc315aea8861653872867a4
MD5 hash:
ca046727926a963297a6f802f7f59312
SHA1 hash:
49c2d05a1f1ea2530c2b54c1450b70ab1595175c
SH256 hash:
c5b789fbc3a0179cb4744b110a656dca5187f8bbe16efa6d95ac58fc29597628
MD5 hash:
b773cbe88330ab4ca1f00d5ad580f0d2
SHA1 hash:
8e5226938e54610a634b083e2304d0cade0a5cd4
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
SUSP_OBF_NET_Reactor_Indicators_Jan24
SH256 hash:
ce86166462ed2ebb88a0b22ea7053852e065119714853c9d1ffb11ed2b3b2be9
MD5 hash:
4b9a68828a8dda8f0f34cb5575ea5679
SHA1 hash:
baf9bc6bf0f9cbe5ba81c55eb0e111580d73760e
Detections:
QuasarRAT
cn_utf8_windows_terminal
malware_windows_xrat_quasarrat
MAL_BackNet_Nov18_1
INDICATOR_EXE_Packed_Fody
INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
SH256 hash:
2f810da956fed7faf74c8ce2cf65638ccdaa92b282dc7492592d7aedce280c44
MD5 hash:
0020b06dc2018cc2b5bf98945a39cbd3
SHA1 hash:
71ad34cd9f4f3ee2328ca1c7a64a576499208f43
Detections:
SUSP_NET_Large_Static_Array_In_Small_File_Jan24
HKTL_NET_GUID_Quasar
Malware family:
QuasarRAT
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
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: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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