MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c23c9c58829edc73466c7c9a58e14c97c9a6082feebffab89a0d3cef8cb5297e. 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: 19


Intelligence 19 IOCs YARA 13 File information Comments

SHA256 hash: c23c9c58829edc73466c7c9a58e14c97c9a6082feebffab89a0d3cef8cb5297e
SHA3-384 hash: b012a2ed266211fb295146a0099584540e6b7005d73ae505839b09e1a479197aaec4eec591aa555d5b21bb093c7aaff5
SHA1 hash: f3811876cf53215031e2c51cf06b8a5b6d5d50a6
MD5 hash: e45acf8b1d5991a5fda49c732683ff05
humanhash: michigan-pennsylvania-hawaii-colorado
File name:Server.exe
Download: download sample
Signature njrat
File size:37'888 bytes
First seen:2025-03-23 14:03:04 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 768:5gg5NbeslUV0bw078KsAGrM+rMRa8Nufst:5bFlU6z8Kv5+gRJNc
Threatray 476 similar samples on MalwareBazaar
TLSH T14903294D7FE18168C5FD067B05B2D41207BAE04B6A23D91E8EF164EA37636C58B50EF2
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10522/11/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter BastianHein
Tags:exe NjRAT

Intelligence


File Origin
# of uploads :
1
# of downloads :
563
Origin country :
CL CL
Vendor Threat Intelligence
Malware family:
ID:
1
File name:
Server.exe
Verdict:
Malicious activity
Analysis date:
2025-03-23 14:03:57 UTC
Tags:
njrat

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Tags:
bladabindi njrat
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a process with a hidden window
Creating a window
Searching for synchronization primitives
DNS request
Connecting to a non-recommended domain
Connection attempt
Creating a file
Launching the process to change the firewall settings
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
backdoor cmd explorer fingerprint lolbin netsh njrat obfuscated rat vbnet windows
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
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
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Modifies the windows firewall
Multi AV Scanner detection for submitted file
Uses netsh to modify the Windows network and firewall settings
Yara detected Njrat
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Backdoor.njRAT
Status:
Malicious
First seen:
2025-03-23 09:59:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
34 of 36 (94.44%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:njrat botnet:hacked defense_evasion discovery persistence privilege_escalation
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Event Triggered Execution: Netsh Helper DLL
System Location Discovery: System Language Discovery
Modifies Windows Firewall
Malware Config
C2 Extraction:
dedekond33.zapto.org:1
Verdict:
Malicious
Tags:
rat njrat Win.Packed.Bladabindi-7994427-0 bladabindi
YARA:
Windows_Trojan_Njrat_30f3c220 MALWARE_Win_NjRAT
Unpacked files
SH256 hash:
c23c9c58829edc73466c7c9a58e14c97c9a6082feebffab89a0d3cef8cb5297e
MD5 hash:
e45acf8b1d5991a5fda49c732683ff05
SHA1 hash:
f3811876cf53215031e2c51cf06b8a5b6d5d50a6
Detections:
win_njrat_g1 win_njrat_w1 NjRat
Please note that we are no longer able to provide a coverage score for Virus Total.

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:ByteCode_MSIL_Backdoor_NjRAT
Author:ReversingLabs
Description:Yara rule that detects NjRAT backdoor.
Rule name:Detect_PowerShell_Obfuscation
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:Disable_Defender
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:MALWARE_Win_NjRAT
Author:ditekSHen
Description:Detects NjRAT / Bladabindi / NjRAT Golden
Rule name:Mal_WIN_NjRAT_RAT_PE
Author:Phatcharadol Thangplub
Description:Use to detect NjRAT implant.
Rule name:NETexecutableMicrosoft
Author:malware-lu
Rule name:Njrat
Author:botherder https://github.com/botherder
Description:Njrat
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_netsh_firewall_command
Author:SECUINFRA Falcon Team
Rule name:Windows_Trojan_Njrat_30f3c220
Rule name:Windows_Trojan_Njrat_30f3c220
Author:Elastic Security
Rule name:win_njrat_w1
Author:Brian Wallace @botnet_hunter <bwall@ballastsecurity.net>
Description:Identify njRat

File information


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

BLint


The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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