MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 388325db8b3ee1efceb9be9796c047c8b686fd58c6665fb1ee3d33d682267876. 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 17 File information Comments

SHA256 hash: 388325db8b3ee1efceb9be9796c047c8b686fd58c6665fb1ee3d33d682267876
SHA3-384 hash: a9b481cce53c7911e40e67ff2591580d9c468ceb33277a7cb4c6d4e637abfc87a6200f30bd1e8f46a38826cdc7df6500
SHA1 hash: a73fdee4e77cd1002b7659697b7f220b2d9e80f3
MD5 hash: 7456d393f8b3d9f7055d4b8a162109af
humanhash: zebra-may-tennessee-nineteen
File name:bRbX.exe
Download: download sample
Signature njrat
File size:24'064 bytes
First seen:2023-10-31 01:07:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'643 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 384:6oWSkWHa55BgDVRGipkItzY6vZg36Eh7FpmRvR6JZlbw8hqIusZzZCm:dJuk9pHRpcnuy
Threatray 132 similar samples on MalwareBazaar
TLSH T1A7B22B4E3FA98852D5BC1B7485A59A5003B4E1874423EE2FCCC550CBAFB3AD91D4CAF9
TrID 59.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.6% (.SCR) Windows screen saver (13097/50/3)
8.5% (.EXE) Win64 Executable (generic) (10523/12/4)
5.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.0% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter pmelson
Tags:exe NjRAT

Intelligence


File Origin
# of uploads :
1
# of downloads :
394
Origin country :
US US
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a window
Searching for synchronization primitives
Using the Windows Management Instrumentation requests
Sending a custom TCP request
Launching the process to change the firewall settings
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd fingerprint greyware keylogger lolbin netsh njrat packed rat replace stealer
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
C2 URLs / IPs found in malware configuration
Contains functionality to log keystrokes (.Net Source)
Creates autostart registry keys with suspicious names
Found malware configuration
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies the windows firewall
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
Uses netsh to modify the Windows network and firewall settings
Yara detected Njrat
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1334606 Sample: bRbX.exe Startdate: 31/10/2023 Architecture: WINDOWS Score: 100 23 Snort IDS alert for network traffic 2->23 25 Found malware configuration 2->25 27 Malicious sample detected (through community Yara rule) 2->27 29 8 other signatures 2->29 7 bRbX.exe 5 4 2->7         started        11 bRbX.exe 3 2->11         started        13 bRbX.exe 2 2->13         started        15 bRbX.exe 2 2->15         started        process3 dnsIp4 21 181.217.95.27, 1024, 49736 CorporacionTelemicCAVE Brazil 7->21 31 Creates autostart registry keys with suspicious names 7->31 33 Uses netsh to modify the Windows network and firewall settings 7->33 35 Modifies the windows firewall 7->35 17 netsh.exe 2 7->17         started        signatures5 process6 process7 19 conhost.exe 17->19         started       
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Status:
Malicious
First seen:
2023-10-31 01:08:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
34 of 38 (89.47%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:njrat botnet:vitima evasion persistence trojan
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Adds Run key to start application
Modifies Windows Firewall
njRAT/Bladabindi
Malware Config
C2 Extraction:
181.217.95.27:1024
Unpacked files
SH256 hash:
388325db8b3ee1efceb9be9796c047c8b686fd58c6665fb1ee3d33d682267876
MD5 hash:
7456d393f8b3d9f7055d4b8a162109af
SHA1 hash:
a73fdee4e77cd1002b7659697b7f220b2d9e80f3
Detections:
NjRat win_njrat_w1 win_njrat_g1
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:Disable_Defender
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
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:NETexecutableMicrosoft
Author:malware-lu
Rule name:Njrat
Author:botherder https://github.com/botherder
Description:Njrat
Rule name:pe_imphash
Rule name:Skystars_LightDefender_Njrat_Rule
Author:Skystars LightDefender
Description:Detects Njrat
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_bytecodes_oct_2023
Author:Matthew @ Embee_Research
Rule name:win_njrat_strings_oct_2023
Author:Matthew @ Embee_Research
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.

Web download

njrat

Executable exe 388325db8b3ee1efceb9be9796c047c8b686fd58c6665fb1ee3d33d682267876

(this sample)

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