MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bcb6f8e7702380c8f2eec6393a4a4d414027d75786593072e524aef7f4d232cd. 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 12 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bcb6f8e7702380c8f2eec6393a4a4d414027d75786593072e524aef7f4d232cd
SHA3-384 hash: ef631b699ad470c8b261682afff34c63a95d9c84b3921a91ab46e016dabc32315ba3e56754178b84cad40ac40dafacc2
SHA1 hash: af779bc979d9d4515510b60511ef14d1d3331f47
MD5 hash: c7bb7b93bc4327b0190c852138cc4f0c
humanhash: autumn-november-lion-failed
File name:SteamDetector.exe
Download: download sample
Signature njrat
Create hunting rule
File size:220'160 bytes
First seen:2025-01-23 06:01:27 UTC
Last seen:2025-02-05 07:57:22 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'854 x AgentTesla, 19'783 x Formbook, 12'304 x SnakeKeylogger)
ssdeep 1536:56N9uMvWCo+gRJNQkZqH5u3JPyaoBypISq8JhrCdupRKV:567ukc+yJSkA5u3JPn++rq8JhudupRK
Threatray 1'500 similar samples on MalwareBazaar
TLSH T1E324711A6858FB27C26C047F0893E479805EE7866D2E43573C4D2EFE27FBB64D621168
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
File icon (PE):PE icon
dhash icon 71e09c9c8cc6f071 (1 x njrat)
Reporter lontze7
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
3
# of downloads :
273
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
phorpiex
Create hunting rule
ID:
1
File name:
4363463463464363463463463.exe
Verdict:
Malicious activity
Analysis date:
2025-01-13 01:58:26 UTC
Tags:
loader github xred backdoor dyndns phorpiex evasion stealer auto discord exfiltration lumma ransomware hausbomber adware asyncrat rat dcrat xworm amadey meterpreter botnet telegram vidar remcos opendir cryptbot meduza metasploit arch-doc arch-scr quasarrat stealc coinminer miner
Link:
https://app.any.run/tasks/5a561b9f-e713-4ab8-bb4c-b23788a788b7

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Sanesecurity.Malware.29039.UNOFFICIAL
Create hunting rule

Win.Packed.Bladabindi-7994427-0
Create hunting rule

Win.Dropper.Nanocore-10030076-0
Create hunting rule

Win.Trojan.Generic-6417450-0
Create hunting rule

Win.Trojan.Generic-6454614-0
Create hunting rule

Win.Trojan.Generic-6454615-0
Create hunting rule

Win.Trojan.B-468
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6791dc42b5602ee8cdaff0a0
Tags:
bladabindi autorun njrat
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Enabling the 'hidden' option for analyzed file
Creating a file in the %AppData% directory
Creating a process from a recently created file
Creating a file
Creating a process with a hidden window
Enabling the 'hidden' option for recently created files
Creating a window
Searching for synchronization primitives
Connection attempt
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
Creating a file in the mass storage device
Enabling autorun by creating a file
Enabling threat expansion on mass storage devices
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
backdoor bladabindi cmd explorer fingerprint lolbin netsh njrat obfuscated rat vbnet windows
Link:
https://www.filescan.io/uploads/6791db5f70cf772b4cf5434d/reports/58491b0a-30cc-4f36-9ab0-380d0bb51653/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/bcb6f8e7702380c8f2eec6393a4a4d414027d75786593072e524aef7f4d232cd
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.
Malware family:
Mimikatz
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/53ffd780-8e68-4a86-943f-dc34ffe280fa
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
spre.troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1597331
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Contains functionality to log keystrokes (.Net Source)
Creates autorun.inf (USB autostart)
Creates autostart registry keys with suspicious names
Drops PE files to the startup folder
Drops PE files with benign system names
Found malware configuration
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: Drops fake system file at system root drive
Sigma detected: Files With System Process Name In Unsuspected Locations
Uses netsh to modify the Windows network and firewall settings
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1597331 Sample: SteamDetector.exe Startdate: 23/01/2025 Architecture: WINDOWS Score: 100 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Antivirus detection for dropped file 2->46 48 13 other signatures 2->48 8 SteamDetector.exe 1 6 2->8         started        11 SteamDetector.exe 2 2->11         started        13 SteamDetector.exe 2 2->13         started        15 SteamDetector.exe 2 2->15         started        process3 file4 34 C:\Users\user\AppData\...\SteamDetector.exe, PE32 8->34 dropped 36 C:\...\SteamDetector.exe:Zone.Identifier, ASCII 8->36 dropped 38 C:\Users\user\...\SteamDetector.exe.log, ASCII 8->38 dropped 17 SteamDetector.exe 2 11 8->17         started        process5 dnsIp6 40 127.0.0.1 unknown unknown 17->40 26 C:\svchost.exe, PE32 17->26 dropped 28 C:\...\46422e05e6e5062fec6d0ab906669fb9.exe, PE32 17->28 dropped 30 C:\svchost.exe:Zone.Identifier, ASCII 17->30 dropped 32 2 other malicious files 17->32 dropped 50 Antivirus detection for dropped file 17->50 52 Multi AV Scanner detection for dropped file 17->52 54 Protects its processes via BreakOnTermination flag 17->54 56 7 other signatures 17->56 22 netsh.exe 2 17->22         started        file7 signatures8 process9 process10 24 conhost.exe 22->24         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/bcb6f8e7702380c8f2eec6393a4a4d414027d75786593072e524aef7f4d232cd
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bcb6f8e7702380c8f2eec6393a4a4d414027d75786593072e524aef7f4d232cd/
Threat name:
ByteCode-MSIL.Backdoor.njRAT
Create hunting rule
Status:
Malicious
First seen:
2023-05-07 07:57:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
31 of 38 (81.58%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=xs3prz3qeoamr4xoyy4tussnifacpv2xqzmta4xfesxpp5gsglgq._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
116d9ccab0f891e59fcfcaef9f2f7252a482e6bd29e3e88c7409f39c5a4e3b5a
njrat
2a1837f12707bb0c3cb62653750004640a029833f7d7790f1d4ce79507a0dd16
njrat
502869ac1880a412f2a5d8dae93b506d98acb48f10cdb32bcdc3517fc9721711
njrat
6d3d9cec199ecf570a4fe0c21c3a0d09b9dabc36f90b609e854740a4fb6510ce
njrat
ab6b0c8a2fd898517ff036b9fc94ce581febdab5a69433f491fb70bc55ee1833
njrat
c7b4072d1237617b13a7613c46e5a4b63bd8e09b7c9eba9409133fdd0aee7b10
njrat
+ 1'490 additional samples on MalwareBazaar
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat botnet:hacked defense_evasion discovery persistence privilege_escalation trojan
Link:
https://tria.ge/reports/250123-grflyswkcw/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Event Triggered Execution: Netsh Helper DLL
System Location Discovery: System Language Discovery
Drops autorun.inf file
Adds Run key to start application
Checks computer location settings
Drops startup file
Executes dropped EXE
Loads dropped DLL
Modifies Windows Firewall
Njrat family
njRAT/Bladabindi
Malware Config
C2 Extraction:
127.0.0.1:5552
Verdict:
Malicious
Tags:
rat njrat Win.Packed.Bladabindi-7994427-0
YARA:
Windows_Trojan_Njrat_30f3c220 MALWARE_Win_NjRAT
Link:
https://app.threat.zone/submission/872bbf67-7e25-4211-b719-082e180cf205
Unpacked files
SH256 hash:
bcb6f8e7702380c8f2eec6393a4a4d414027d75786593072e524aef7f4d232cd
MD5 hash:
c7bb7b93bc4327b0190c852138cc4f0c
SHA1 hash:
af779bc979d9d4515510b60511ef14d1d3331f47
Detections:
NjRat
Create hunting rule
win_njrat_w1
Create hunting rule
win_njrat_g1
Create hunting rule
Link:
https://www.unpac.me/results/d1d93cb9-f1f4-4791-a21a-7f398bde0545/
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
Create hunting rule
Author:ReversingLabs
Description:Yara rule that detects NjRAT backdoor.
Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:MALWARE_Win_NjRAT
Create hunting rule
Author:ditekSHen
Description:Detects NjRAT / Bladabindi / NjRAT Golden
Rule name:Mal_WIN_NjRAT_RAT_PE
Create hunting rule
Author:Phatcharadol Thangplub
Description:Use to detect NjRAT implant.
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:Njrat
Create hunting rule
Author:botherder https://github.com/botherder
Description:Njrat
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_Njrat_30f3c220
Create hunting rule
Rule name:Windows_Trojan_Njrat_30f3c220
Create hunting rule
Author:Elastic Security
Rule name:win_njrat_w1
Create hunting rule
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.

Web download

njrat

Executable exe bcb6f8e7702380c8f2eec6393a4a4d414027d75786593072e524aef7f4d232cd

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3238027/

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

Comments