MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8b947486ed56599c2fbb60f77d60b3215e5f2dd5cda1fd94dafe5ca4825c217b. 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 13 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8b947486ed56599c2fbb60f77d60b3215e5f2dd5cda1fd94dafe5ca4825c217b
SHA3-384 hash: 6133459dc76bdd2700bc31b6d5689517de98118599fb1e243fa0d1a94ead721148b91a38533b635e2ab3db6204fcf92d
SHA1 hash: fe6e514468854217f86079d3e111815fb52de928
MD5 hash: 5133a39682e9f9c6b6245193d0e71c8a
humanhash: moon-mirror-yankee-hamper
File name:Server.exe
Download: download sample
Signature njrat
Create hunting rule
File size:37'888 bytes
First seen:2024-07-22 04:41:08 UTC
Last seen:2024-07-30 06:49:19 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 384:WkZTUiSmL1G5k2gyk/4sP9S/ksVW0erAF+rMRTyN/0L+EcoinblneHQM3epzXnNP:BZX32bk/4sYssVWbrM+rMRa8Nuprt
TLSH T1C5032A4D7FE18178C5FD067B09B2D41207BAE04B6E23D90E8EE564EA37636C18B54AF1
TrID 60.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.8% (.SCR) Windows screen saver (13097/50/3)
8.7% (.EXE) Win64 Executable (generic) (10523/12/4)
5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter lontze7
Tags:NjRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
159
Origin country :
FR FR
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.29039.UNOFFICIAL
Create hunting rule

Win.Packed.Bladabindi-7994427-0
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Win.Dropper.Nanocore-10030076-0
Create hunting rule

Win.Trojan.Generic-6417450-0
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Win.Trojan.Generic-6454614-0
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Win.Trojan.Generic-6454615-0
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Win.Trojan.B-468
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Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=669de31cb302ab76f4483559
Tags:
Execution Network Stealth Trojan Atraps
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
Enabling the 'hidden' option for recently created files
Creating a process with a hidden window
Creating a window
Searching for synchronization primitives
Connection attempt
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
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd explorer fingerprint keylogger lolbin netsh njrat rat stealer vbnet
Link:
https://www.filescan.io/uploads/669de31b20d8bc991981cd3f/reports/46c07940-3e4b-49a3-82e4-4835f21407fb/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/8b947486ed56599c2fbb60f77d60b3215e5f2dd5cda1fd94dafe5ca4825c217b
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/7e49e252-9902-45b9-ae1e-4a85b4eecc81
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1477925
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 autostart registry keys with suspicious names
Drops PE files to the startup folder
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 domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Protects its processes via BreakOnTermination flag
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: 1477925 Sample: Server.exe Startdate: 22/07/2024 Architecture: WINDOWS Score: 100 38 Multi AV Scanner detection for domain / URL 2->38 40 Found malware configuration 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 12 other signatures 2->44 8 Server.exe 1 6 2->8         started        11 server.exe 2 2->11         started        13 server.exe 2 2->13         started        15 server.exe 2 2->15         started        process3 file4 30 C:\Users\user\AppData\Roaming\server.exe, PE32 8->30 dropped 32 C:\Users\user\...\server.exe:Zone.Identifier, ASCII 8->32 dropped 34 C:\Users\user\AppData\...\Server.exe.log, ASCII 8->34 dropped 17 server.exe 2 6 8->17         started        process5 dnsIp6 36 127.0.0.1 unknown unknown 17->36 26 C:\...\73e4ea7af59bea49b79c8c5f799f272d.exe, PE32 17->26 dropped 28 73e4ea7af59bea49b7...exe:Zone.Identifier, ASCII 17->28 dropped 46 Antivirus detection for dropped file 17->46 48 Multi AV Scanner detection for dropped file 17->48 50 Protects its processes via BreakOnTermination flag 17->50 52 5 other signatures 17->52 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/8b947486ed56599c2fbb60f77d60b3215e5f2dd5cda1fd94dafe5ca4825c217b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8b947486ed56599c2fbb60f77d60b3215e5f2dd5cda1fd94dafe5ca4825c217b/
Threat name:
ByteCode-MSIL.Backdoor.njRAT
Create hunting rule
Status:
Malicious
First seen:
2024-07-21 23:16:54 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
24 of 24 (100.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rokhjbxnkzmzyl53md3x2yftefpf6lovzwq73fg27zokjas4ef5q._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat botnet:hacked evasion persistence privilege_escalation trojan
Link:
https://tria.ge/reports/240722-fbnryszbjr/
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
Adds Run key to start application
Checks computer location settings
Drops startup file
Executes dropped EXE
Loads dropped DLL
Modifies Windows Firewall
njRAT/Bladabindi
Malware Config
C2 Extraction:
127.0.0.1:6652
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/ed7ebe42-9acd-4601-952c-950ad97cd0ef
Unpacked files
SH256 hash:
8b947486ed56599c2fbb60f77d60b3215e5f2dd5cda1fd94dafe5ca4825c217b
MD5 hash:
5133a39682e9f9c6b6245193d0e71c8a
SHA1 hash:
fe6e514468854217f86079d3e111815fb52de928
Detections:
NjRat
Create hunting rule
win_njrat_w1
Create hunting rule
win_njrat_g1
Create hunting rule
Link:
https://www.unpac.me/results/712a2557-d2c3-4705-871a-96f20304a5a1/
Malware family:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8b947486ed56/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/8b947486ed56599c2fbb60f77d60b3215e5f2dd5cda1fd94dafe5ca4825c217b

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: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:SUSP_netsh_firewall_command
Create hunting rule
Author:SECUINFRA Falcon Team
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 8b947486ed56599c2fbb60f77d60b3215e5f2dd5cda1fd94dafe5ca4825c217b

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3060210/
  
Delivery method
Distributed via web download

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