MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fc2631c62f5aadf52a4f83289493d04a5ab8a108d004eb6a55eacbf98df41f08. 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: 18

Intelligence 18 IOCs YARA 19 File information Comments

SHA256 hash:	fc2631c62f5aadf52a4f83289493d04a5ab8a108d004eb6a55eacbf98df41f08
SHA3-384 hash:	fec8423834c807f836056049193fe7a19463b28f119ef5d4847282c8448996be1ba43fba6fd5564a73180894bde90a5e
SHA1 hash:	6a1a0a3f40ff9b81c8e75436fc1465aaca719d63
MD5 hash:	bb7170cddabbe302e36414eb9ecae880
humanhash:	ack-georgia-california-twenty
File name:	BVSYd4tm.exe
Download:	download sample
Signature	njrat Create hunting rule
File size:	24'064 bytes
First seen:	2024-06-22 12:17:22 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep	384:oc6ze6e1PAhJVzC3tC1im/BsTx46PgZ0rap9HBmRvR6JZlbw8hqIusZzZkV6:ce9EJLN/yRpcnuG
TLSH	T106B2194E3FB98956C5BC177486A5965003B491870423EE2FCCC564CBAFB3BD92D48AF8
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 :

# of downloads :

594

Origin country :

Vendor Threat Intelligence

Malware family:

njrat

ID:

File name:

fc2631c62f5aadf52a4f83289493d04a5ab8a108d004eb6a55eacbf98df41f08.exe

Verdict:

Malicious activity

Analysis date:

2024-06-22 12:18:42 UTC

Tags:

rat njrat bladabindi remote

Link:

https://app.any.run/tasks/6ddeb5c1-44e8-4b58-b231-618b4cdf33bb

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6676c0fc50b6d35655cbe493win7simulatehigh_evasion

Tags:

Execution Generic Network Stealth 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

Connection attempt

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

Enabling autorun by creating a file

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

cmd fingerprint keylogger lolbin netsh njrat rat stealer vbnet

Link:

https://www.filescan.io/uploads/6676c0fc6b8dba248b440e0f/reports/07acd7bc-8b5b-4652-ab84-480855256349/overview

Verdict:

Malicious

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/fc2631c62f5aadf52a4f83289493d04a5ab8a108d004eb6a55eacbf98df41f08

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.

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/c846787b-2e99-43bc-8a22-c5f4e3ef4b85

Result

Threat name:

Njrat

Detection:

malicious

Classification:

phis.troj.adwa.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1461079

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

Disables zone checking for all users

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 dropped file

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:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/fc2631c62f5aadf52a4f83289493d04a5ab8a108d004eb6a55eacbf98df41f08

Detection:

njrat

Link:

https://mwdb.cert.pl/sample/fc2631c62f5aadf52a4f83289493d04a5ab8a108d004eb6a55eacbf98df41f08/

Threat name:

ByteCode-MSIL.Backdoor.Bladabhindi

Status:

Malicious

First seen:

2024-06-22 12:18:05 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

24 of 24 (100.00%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=7qtddrrplkw7kkspqmujje6qjjnlriii2acow2sv5lf7tdpud4ea._file

Verdict:

malicious

Label(s):

njrat

Result

Malware family:

njrat

Score:

10/10

Tags:

family:njrat botnet:hacked evasion persistence privilege_escalation trojan

Link:

https://tria.ge/reports/240622-pgldfsxfrc/

Behaviour

Runs ping.exe

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Event Triggered Execution: Netsh Helper DLL

Adds Run key to start application

Deletes itself

Drops startup file

Modifies Windows Firewall

njRAT/Bladabindi

Malware Config

C2 Extraction:

bar-fri.gl.at.ply.gg:36706

Unpacked files

SH256 hash:

fc2631c62f5aadf52a4f83289493d04a5ab8a108d004eb6a55eacbf98df41f08

MD5 hash:

bb7170cddabbe302e36414eb9ecae880

SHA1 hash:

6a1a0a3f40ff9b81c8e75436fc1465aaca719d63

Detections:

NjRat

win_njrat_w1

win_njrat_g1

Njrat

MALWARE_Win_NjRAT

CN_disclosed_20180208_c

Link:

https://www.unpac.me/results/2adc0f9b-0b54-4390-b1e0-1b55bb448b15/

Malware family:

njRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/fc2631c62f5a/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/fc2631c62f5aadf52a4f83289493d04a5ab8a108d004eb6a55eacbf98df41f08

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 Create hunting rule
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 Create hunting rule
Author:	Florian Roth
Description:	Detects malware from disclosed CN malware set
Reference:	https://twitter.com/cyberintproject/status/961714165550342146

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_Njrat_strings Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect njRAT in memory

Rule name:	MALWARE_Win_NjRAT Create hunting rule
Author:	ditekSHen
Description:	Detects NjRAT / Bladabindi / NjRAT Golden

Rule name:	MAL_njrat Create hunting rule
Author:	SECUINFRA Falcon Team

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:	Njrat Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect njRAT in memory

Rule name:	pe_imphash Create hunting rule

Rule name:	Skystars_LightDefender_Njrat_Rule Create hunting rule
Author:	Skystars LightDefender
Description:	Detects Njrat

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_bytecodes_oct_2023 Create hunting rule
Author:	Matthew @ Embee_Research

Rule name:	win_njrat_strings_oct_2023 Create hunting rule
Author:	Matthew @ Embee_Research

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

exe fc2631c62f5aadf52a4f83289493d04a5ab8a108d004eb6a55eacbf98df41f08

(this sample)

Link

https://www.virustotal.com/gui/file/fc2631c62f5aadf52a4f83289493d04a5ab8a108d004eb6a55eacbf98df41f08/detection

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

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (HIGH_ENTROPY_VA)	high

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