MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a67b99e3b666fdb104edeb7e51db77269fb93744027d8c67022f8ecdaf5141f. 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 1 YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4a67b99e3b666fdb104edeb7e51db77269fb93744027d8c67022f8ecdaf5141f
SHA3-384 hash: 7a6ad4da8eb5dc4a1b7e2160674239b306e8b344d9fcdbe3476fc51a44a57f38455ad476602866f48e3926f79a21871b
SHA1 hash: 80a2f9c98e682e53da78fdd9c6dc3e81c43c225b
MD5 hash: 4c471dbef461ae0fc6401bff21f00ecb
humanhash: twenty-artist-aspen-illinois
File name:4c471dbef461ae0fc6401bff21f00ecb.exe
Download: download sample
Signature njrat
Create hunting rule
File size:1'520'640 bytes
First seen:2024-09-20 16:45:11 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:8NLiXDlSnES+fok9RRpYtUFLWkfRSr2cXcmbS0Kt:aGDl4+JReBcRw3+/t
Threatray 1 similar samples on MalwareBazaar
TLSH T16E65FA1729FBC476C016A0799163BB6AC50770BB72C7531213BAFF32D66AE53D878848
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
File icon (PE):PE icon
dhash icon f8debe92a87cfcf0 (3 x njrat, 1 x AsyncRAT)
Reporter abuse_ch
Tags:exe NjRAT RAT


Avatar
abuse_ch
njrat C2:
34.145.18.233:1177

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
34.145.18.233:1177 https://threatfox.abuse.ch/ioc/1326888/

Intelligence

File Origin
# of uploads :
1
# of downloads :
512
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
njrat
Create hunting rule
ID:
1
File name:
4c471dbef461ae0fc6401bff21f00ecb.exe
Verdict:
Malicious activity
Analysis date:
2024-09-20 16:46:21 UTC
Tags:
rat njrat bladabindi remote
Link:
https://app.any.run/tasks/06ca9864-8569-43a5-bdfd-ff30a8a75b20

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Bladabindi-10036274-0
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66eda6ce1db25d66857c5b89
Tags:
Execution Network Stealth Trojan Msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Creating a process with a hidden window
Creating a window
Searching for synchronization primitives
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
Query of malicious DNS domain
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
asyncrat obfuscated packed vbnet
Link:
https://www.filescan.io/uploads/66eda6cd4a48170ff00cd24f/reports/0507052b-93d3-4daa-8046-879e88193f4c/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/4a67b99e3b666fdb104edeb7e51db77269fb93744027d8c67022f8ecdaf5141f
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/ade7f251-ab75-4b84-ae6b-af7c0970a0a2
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
phis.troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1514614
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
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
Protects its processes via BreakOnTermination flag
Sigma detected: New RUN Key Pointing to Suspicious Folder
Suricata IDS alerts for network traffic
Uses netsh to modify the Windows network and firewall settings
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1514614 Sample: qccPe3dO1l.exe Startdate: 20/09/2024 Architecture: WINDOWS Score: 100 33 seznam.hopto.org 2->33 37 Suricata IDS alerts for network traffic 2->37 39 Found malware configuration 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 13 other signatures 2->43 9 qccPe3dO1l.exe 1 5 2->9         started        12 facebok.exe 3 2->12         started        14 facebok.exe 2 2->14         started        16 facebok.exe 2 2->16         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\...\facebok.exe, PE32 9->29 dropped 31 C:\Users\user\AppData\...\qccPe3dO1l.exe.log, ASCII 9->31 dropped 18 facebok.exe 4 5 9->18         started        process6 dnsIp7 35 seznam.hopto.org 34.145.18.233, 1177, 49732 ATGS-MMD-ASUS United States 18->35 27 C:\...\36db42ed563b740681ec3918ded7c343.exe, PE32 18->27 dropped 45 Antivirus detection for dropped file 18->45 47 Multi AV Scanner detection for dropped file 18->47 49 Protects its processes via BreakOnTermination flag 18->49 51 6 other signatures 18->51 23 netsh.exe 2 18->23         started        file8 signatures9 process10 process11 25 conhost.exe 23->25         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4a67b99e3b666fdb104edeb7e51db77269fb93744027d8c67022f8ecdaf5141f
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4a67b99e3b666fdb104edeb7e51db77269fb93744027d8c67022f8ecdaf5141f/
Threat name:
ByteCode-MSIL.Spyware.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2024-09-17 09:07:18 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
28 of 38 (73.68%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jjt3thr3mzx5weco3236khnxoju7xe3uiat5rrtqel4ozwxvcqpq._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
4a67b99e3b666fdb104edeb7e51db77269fb93744027d8c67022f8ecdaf5141f
njrat
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat discovery evasion persistence privilege_escalation trojan
Link:
https://tria.ge/reports/240920-t9ylpsxbll/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Event Triggered Execution: Netsh Helper DLL
System Location Discovery: System Language Discovery
Adds Run key to start application
Checks computer location settings
Drops startup file
Executes dropped EXE
Loads dropped DLL
Modifies Windows Firewall
njRAT/Bladabindi
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/4ca8ac8d-e198-4d2e-af9f-07028cc63dfe
Unpacked files
SH256 hash:
0ed7ac919de41dfd1cb4ed54dff69f34c78f844e53ce27ceec504fedb1cf7887
MD5 hash:
ed3a4e235c482c347ea52686e099210a
SHA1 hash:
b4a6a0e35bf33b8b39008e84879c0aef55463537
Detections:
NjRat
Create hunting rule
win_njrat_w1
Create hunting rule
win_njrat_g1
Create hunting rule
Njrat
Create hunting rule
CN_disclosed_20180208_c
Create hunting rule
Link:
https://www.unpac.me/results/987b92f9-fe9f-46bd-88f1-bc4538814f76/
Parent samples :
4a67b99e3b666fdb104edeb7e51db77269fb93744027d8c67022f8ecdaf5141f
58dae216d7e872a5ac859cb6990165c8a1b6c10b7d39498b3b38327bf8500ae5
SH256 hash:
4a67b99e3b666fdb104edeb7e51db77269fb93744027d8c67022f8ecdaf5141f
MD5 hash:
4c471dbef461ae0fc6401bff21f00ecb
SHA1 hash:
80a2f9c98e682e53da78fdd9c6dc3e81c43c225b
Link:
https://www.unpac.me/results/987b92f9-fe9f-46bd-88f1-bc4538814f76/
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/4a67b99e3b666fdb104edeb7e51db77269fb93744027d8c67022f8ecdaf5141f

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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

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