MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e. 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: 16


Intelligence 16 IOCs YARA 15 File information Comments

SHA256 hash: ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e
SHA3-384 hash: 83832eb2cca0ee77e64f758c2d6faa2f39d45332fd64a02f04c0b601cc2304893b749bb603d2772a206cb978a2908a9b
SHA1 hash: aa81bc701216ec1441565275c0bfab69376757a6
MD5 hash: 1722c8695ca31163d93c6cf56f0c8530
humanhash: bakerloo-high-single-georgia
File name:ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe
Download: download sample
Signature njrat
File size:44'032 bytes
First seen:2024-01-20 19:26:34 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 384:ZZyNPzxdW/IUyNZCB5EFiLgVOcEvbl56lpzYIij+ZsNO3PlpJKkkjh/TzF7pWnt8:7oLxIghNZk5EFiLCO7bypuXQ/oQy3+L
Threatray 497 similar samples on MalwareBazaar
TLSH T19313D78DB694E175D5FF8BF1B4A2B2890B71A017A802D30F99F114D94FB3AC09611EE7
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 adm1n_usa32
Tags:exe NjRAT

Intelligence


File Origin
# of uploads :
1
# of downloads :
331
Origin country :
RO RO
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Creating a file in the Windows directory
Creating a process from a recently created file
Creating a file
Sending a custom TCP request
Enabling the 'hidden' option for recently created files
Creating a window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm cmd dllhost keylogger lolbin lolbin njrat rat schtasks
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:
phis.troj.adwa.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Creates an autostart registry key pointing to binary in C:\Windows
Disables zone checking for all users
Drops executables to the windows directory (C:\Windows) and starts them
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Protects its processes via BreakOnTermination flag
System process connects to network (likely due to code injection or exploit)
Yara detected Njrat
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Status:
Malicious
First seen:
2024-01-19 16:04:43 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
23 of 24 (95.83%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:njrat botnet:hacked persistence trojan
Behaviour
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Adds Run key to start application
Checks computer location settings
Drops startup file
Executes dropped EXE
njRAT/Bladabindi
Malware Config
C2 Extraction:
178.187.164.4:7777
Unpacked files
SH256 hash:
ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e
MD5 hash:
1722c8695ca31163d93c6cf56f0c8530
SHA1 hash:
aa81bc701216ec1441565275c0bfab69376757a6
Detections:
Njrat MALWARE_Win_NjRAT CN_disclosed_20180208_c win_njrat_2
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:CN_disclosed_20180208_c
Author:Florian Roth (Nextron Systems)
Description:Detects malware from disclosed CN malware set
Reference:https://twitter.com/cyberintproject/status/961714165550342146
Rule name:CN_disclosed_20180208_c_RID2E71
Author:Florian Roth
Description:Detects malware from disclosed CN malware set
Reference:https://twitter.com/cyberintproject/status/961714165550342146
Rule name:malware_Njrat_strings
Author:JPCERT/CC Incident Response Group
Description:detect njRAT in memory
Rule name:MALWARE_Win_NjRAT
Author:ditekSHen
Description:Detects NjRAT / Bladabindi / NjRAT Golden
Rule name:MAL_njrat
Author:SECUINFRA Falcon Team
Rule name:Multifamily_RAT_Detection
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
Author:malware-lu
Rule name:NETexecutableMicrosoft
Author:malware-lu
Rule name:Njrat
Author:botherder https://github.com/botherder
Description:Njrat
Rule name:pe_imphash
Rule name:RAT_win_njrat
Author:KrknSec
Description:Detects njRAT binaries.
Reference:https://malpedia.caad.fkie.fraunhofer.de/details/win.njrat
Rule name:Skystars_LightDefender_Njrat_Rule
Author:Skystars LightDefender
Description:Detects Njrat
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_Njrat_30f3c220
Rule name:Windows_Trojan_Njrat_30f3c220
Author:Elastic Security

File information


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

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