MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 902b4a3bf6eca808110904b3fa14cdadd83b6ca3bc53b9b9c5cb0321586b1aa9. 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: 11


Intelligence 11 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 902b4a3bf6eca808110904b3fa14cdadd83b6ca3bc53b9b9c5cb0321586b1aa9
SHA3-384 hash: 1a83848b1fcb86d32a5ce44dd32a22b0041b9c28fc5f7f394c6d7527ed792d605bb2e824781368b3e8cf2c9bb10efe00
SHA1 hash: 0716d852a4020e8febfc9e3b6bcb928009f81134
MD5 hash: 3785c98a829edc76d99aaa26e1448e68
humanhash: kentucky-carolina-seventeen-paris
File name:902b4a3bf6eca808110904b3fa14cdadd83b6ca3bc53b9b9c5cb0321586b1aa9
Download: download sample
Signature njrat
Create hunting rule
File size:1'178'112 bytes
First seen:2021-08-30 06:24:41 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 2e5467cba76f44a088d39f78c5e807b6 (131 x DCRat, 113 x njrat, 80 x RedLineStealer)
ssdeep 24576:X1zeL1lWDIQfi33Rs4iXXCVR0yy8GfyVv5298PL02lBF+7ZiskI:FqLSDIQ6HRs4iHCoEGfy/298PL0OYp
Threatray 2 similar samples on MalwareBazaar
TLSH T19045239BA417AD77D1CD9AF610EB5A50C392A8EC75A035DF4C840A60A5D63FC6C3CE4C
Reporter JAMESWT_WT
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
444
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
902b4a3bf6eca808110904b3fa14cdadd83b6ca3bc53b9b9c5cb0321586b1aa9
Verdict:
Malicious activity
Analysis date:
2021-08-30 06:52:21 UTC
Tags:
rat njrat bladabindi
Link:
https://app.any.run/tasks/1ef86789-0aa0-4e6e-98a8-179e816881a6

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/183511/
Detection(s):
PUA.Win.Packer.EnigmaProtector-9852682-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Sending a UDP request
Creating a process with a hidden window
Creating a window
Connection attempt
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
Malware family:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/fc3d3f11-8fdb-4af4-9182-d10ac6df0d52
Result
Threat name:
njRat
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/842025
Signature
.NET source code contains potential unpacker
.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
Contains functionality to log keystrokes (.Net Source)
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
Sigma detected: System File Execution Location Anomaly
System process connects to network (likely due to code injection or exploit)
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: 474460 Sample: J5YMGRRuzy Startdate: 31/08/2021 Architecture: WINDOWS Score: 100 33 Found malware configuration 2->33 35 Malicious sample detected (through community Yara rule) 2->35 37 Antivirus detection for dropped file 2->37 39 13 other signatures 2->39 8 J5YMGRRuzy.exe 1 4 2->8         started        12 dllhost.exe 3 2->12         started        14 dllhost.exe 2 2->14         started        16 dllhost.exe 2 2->16         started        process3 file4 29 C:\Users\user\AppData\Local\...\dllhost.exe, PE32 8->29 dropped 49 Tries to evade analysis by execution special instruction which cause usermode exception 8->49 51 Hides threads from debuggers 8->51 18 dllhost.exe 3 5 8->18         started        signatures5 process6 dnsIp7 31 188.16.99.71, 6522 ROSTELECOM-ASRU Russian Federation 18->31 27 C:\...\2a3654473552fb283f8d66d42708ddcb.exe, PE32 18->27 dropped 41 Antivirus detection for dropped file 18->41 43 System process connects to network (likely due to code injection or exploit) 18->43 45 Multi AV Scanner detection for dropped file 18->45 47 9 other signatures 18->47 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/902b4a3bf6eca808110904b3fa14cdadd83b6ca3bc53b9b9c5cb0321586b1aa9/
Threat name:
Win32.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2021-08-16 09:02:16 UTC
File Type:
PE (Exe)
Extracted files:
1
AV detection:
34 of 46 (73.91%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=savuuo7w5suaqeijasz7ufgnvxmdw3fdxrj3toofzmbscwdldkuq._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
ddd019669afb9f1adad82d960f9e6edc9329e80d91cf7e5b3f1da8698518ec00
njrat
e734ac6c26b18d7af17f9dd4d54752c0159df8fddbc553d3d518b0d8c63d0169
njrat
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat evasion persistence trojan
Link:
https://tria.ge/reports/210830-z2m6fmvgmx/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of NtSetInformationThreadHideFromDebugger
Adds Run key to start application
Drops startup file
Loads dropped DLL
Executes dropped EXE
Modifies Windows Firewall
njRAT/Bladabindi
Unpacked files
SH256 hash:
902b4a3bf6eca808110904b3fa14cdadd83b6ca3bc53b9b9c5cb0321586b1aa9
MD5 hash:
3785c98a829edc76d99aaa26e1448e68
SHA1 hash:
0716d852a4020e8febfc9e3b6bcb928009f81134
Link:
https://www.unpac.me/results/f802266a-e6f6-40de-b6d4-3ff0ca14c38e/
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/902b4a3bf6eca808110904b3fa14cdadd83b6ca3bc53b9b9c5cb0321586b1aa9

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: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_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/183511/

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