MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b96d54c1dc2a1447806ac1f951d9c3a9db1145b530ab71dcb3dbcf5904e9718. 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: 9


Intelligence 9 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4b96d54c1dc2a1447806ac1f951d9c3a9db1145b530ab71dcb3dbcf5904e9718
SHA3-384 hash: de45d9ecf80602e97883b0c86cbf8a735cb56a16a09c11f9118cafb5a38e29f0a69efba6d47bf25b98d28aef2d91d355
SHA1 hash: 5aa78379f85951d7254cb842bab478aa2ff3608e
MD5 hash: 35f3ae0b8f0f38534064efc73e7df046
humanhash: low-twenty-mockingbird-video
File name:4b96d54c1dc2a1447806ac1f951d9c3a9db1145b530ab71dcb3dbcf5904e9718
Download: download sample
Signature njrat
Create hunting rule
File size:1'182'720 bytes
First seen:2021-08-30 06:24:50 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 2e5467cba76f44a088d39f78c5e807b6 (131 x DCRat, 112 x njrat, 79 x RedLineStealer)
ssdeep 24576:DPvz2xN8roaXyRBx8/JUKHW3CxlFeKRkZcRFQAp9FazY3t:DTpCbxxKHW3YlFVRzRFXco
Threatray 7 similar samples on MalwareBazaar
TLSH T1964522C567BA4CB5F2283277BD51921EB7992C2DA0D202BF77ADB80D357B41128F9C06
dhash icon 01412f1303036100 (1 x njrat, 1 x XWorm, 1 x DCRat)
Reporter JAMESWT_WT
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
438
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
4b96d54c1dc2a1447806ac1f951d9c3a9db1145b530ab71dcb3dbcf5904e9718
Verdict:
Malicious activity
Analysis date:
2021-08-30 06:49:49 UTC
Tags:
rat njrat bladabindi
Link:
https://app.any.run/tasks/ae81bbbf-f6ea-4ea3-8b92-9a449adae6bd

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
njRat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/183539/
Detection(s):
PUA.Win.Packer.EnigmaProtector-19
Create hunting rule

PUA.Win.Packer.EnigmaProtector-1
Create hunting rule

PUA.Win.Packer.EnigmaProtector-9852682-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Enabling the 'hidden' option for analyzed file
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Enabling the 'hidden' option for files in the %temp% directory
Creating a process with a hidden window
Creating a window
Connection attempt
Sending a UDP request
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
Malware family:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/ac4b1a64-ec6f-401e-ad0b-8cf01079f919
Result
Threat name:
njRat
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/842023
Signature
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Creates autostart registry keys with suspicious names
Detected njRat
Detected unpacking (changes PE section rights)
Drops PE files to the startup folder
Found malware configuration
Hides threads from debuggers
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
PE file has nameless sections
Protects its processes via BreakOnTermination flag
Tries to evade analysis by execution special instruction which cause usermode exception
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: 474457 Sample: BAJUCYdlZu Startdate: 31/08/2021 Architecture: WINDOWS Score: 100 39 Found malware configuration 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Antivirus detection for dropped file 2->43 45 10 other signatures 2->45 8 BAJUCYdlZu.exe 1 6 2->8         started        12 wind.exe 3 2->12         started        14 wind.exe 2 2->14         started        16 wind.exe 2 2->16         started        process3 file4 31 C:\Users\user\AppData\Local\Temp\wind.exe, PE32 8->31 dropped 33 C:\Users\user\...\wind.exe:Zone.Identifier, ASCII 8->33 dropped 35 C:\Users\user\AppData\...\BAJUCYdlZu.exe.log, ASCII 8->35 dropped 55 Detected unpacking (changes PE section rights) 8->55 57 Tries to evade analysis by execution special instruction which cause usermode exception 8->57 59 Hides threads from debuggers 8->59 18 wind.exe 2 6 8->18         started        signatures5 process6 dnsIp7 37 178.33.93.88, 49758, 49759, 49760 OVHFR France 18->37 27 C:\...\c6511b815e03a0882c34fba8df867454.exe, PE32 18->27 dropped 29 c6511b815e03a0882c...exe:Zone.Identifier, ASCII 18->29 dropped 47 Antivirus detection for dropped file 18->47 49 Multi AV Scanner detection for dropped file 18->49 51 Detected unpacking (changes PE section rights) 18->51 53 8 other signatures 18->53 23 netsh.exe 1 3 18->23         started        file8 signatures9 process10 process11 25 conhost.exe 23->25         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4b96d54c1dc2a1447806ac1f951d9c3a9db1145b530ab71dcb3dbcf5904e9718/
Threat name:
Win32.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2021-08-17 20:16:51 UTC
File Type:
PE (Exe)
Extracted files:
16
AV detection:
33 of 46 (71.74%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
45e9959441e6e30c4c7a4dd8b3d56b88ad09d2ad253851ea79be62ec9c1c8f68
njrat
79e0a26bc2c9c902744c618ad7af045e5b1ced50f98ca066a33df44218f84702
njrat
844b9f86c1708ac12367aeef61e3116207fc430734449781d663755f9b4ffad8
njrat
c5d1fb403be6aff61fd23b5ec08d63f28f22959e8507d33e1259e9326042c487
njrat
d92f632b039d42bfe46c284f35b8ce4f898576d840fd366becc1d9bcd4ed6a3a
njrat
feb6b08e0303e743ce20c4de0cb48f1b230cc80251ecf067f8ba05c88889999b
njrat
Result
Malware family:
n/a
Score:
  8/10
Tags:
evasion persistence
Link:
https://tria.ge/reports/210830-k93dtpbv1x/
Behaviour
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Adds Run key to start application
Drops startup file
Loads dropped DLL
Executes dropped EXE
Modifies Windows Firewall
Unpacked files
SH256 hash:
4b96d54c1dc2a1447806ac1f951d9c3a9db1145b530ab71dcb3dbcf5904e9718
MD5 hash:
35f3ae0b8f0f38534064efc73e7df046
SHA1 hash:
5aa78379f85951d7254cb842bab478aa2ff3608e
Link:
https://www.unpac.me/results/4b26fad2-5708-46cf-91e0-1f3761e60825/
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/4b96d54c1dc2a1447806ac1f951d9c3a9db1145b530ab71dcb3dbcf5904e9718

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:EnigmaStub
Create hunting rule
Author:@bartblaze
Description:Identifies Enigma packer stub.
Rule name:MALWARE_Win_NjRAT
Create hunting rule
Author:ditekSHen
Description:Detects NjRAT / Bladabindi
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_XORed_URL_in_EXE
Create hunting rule
Author:Florian Roth
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:win_njrat_w1
Create hunting rule
Author:Brian Wallace @botnet_hunter <bwall@ballastsecurity.net>
Description:Identify njRat
Rule name:win_smominru_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.smominru.

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/183539/

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