MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 27b5d536586dc6363e030ebd72925191a36c502ba25948c7a56b38c8fd414bfa. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 27b5d536586dc6363e030ebd72925191a36c502ba25948c7a56b38c8fd414bfa
SHA3-384 hash: 63ed4c9320c462c0af28e41ce11e6aba02f55719e7883782621f5551e20faae70cc12c4fbfc961d06ac5a329bf3b3102
SHA1 hash: 305b67450b7c9915e23f715801b435b626a6250d
MD5 hash: b240d323892729c6ce56f5b4dab0195f
humanhash: purple-pennsylvania-saturn-diet
File name:0JYDUQku.exe
Download: download sample
Signature njrat
Create hunting rule
File size:33'280 bytes
First seen:2020-09-29 12:47:21 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'660 x AgentTesla, 19'470 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 768:PPwtpeE7wP7kY3wbXwEhWgw3ccrfLOTr:QujJgMSWgw3caf6Tr
Threatray 54 similar samples on MalwareBazaar
TLSH 36E2094C73A48923C6BE47B85E31954607F1C14B5512EBAF8EC960DA1EA7BE41E00EF7
Reporter pmelson
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
182
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Njrat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/66733/
Detection(s):
Win.Trojan.B-468
Create hunting rule

Win.Trojan.Ratenjay-1
Create hunting rule

Win.Trojan.Bladabindi-6192388-0
Create hunting rule

Win.Trojan.Generic-6417450-0
Create hunting rule

Win.Dropper.njRAT-7436651-0
Create hunting rule

Win.Packed.Generic-7672854-0
Create hunting rule

Win.Packed.Generic-7672855-0
Create hunting rule

Win.Packed.njRAT-7672853-1
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a process with a hidden window
Creating a window
DNS request
Connection attempt
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Launching the process to change the firewall settings
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
spre.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/477380
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
Contains functionality to log keystrokes (.Net Source)
Contains functionality to spread to USB devices (.Net source)
Creates autostart registry keys with suspicious names
Drops PE files with benign system names
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
Sigma detected: Suspicious Svchost Process
Sigma detected: System File Execution Location Anomaly
System process connects to network (likely due to code injection or exploit)
Uses netsh to modify the Windows network and firewall settings
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/27b5d536586dc6363e030ebd72925191a36c502ba25948c7a56b38c8fd414bfa/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2020-09-29 12:49:05 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=e625knsynxddmpqdb26xfesrsgrwyublujmurr5fnm4mr7kbjp5a._file
Verdict:
malicious
Similar samples:
0039b78d69f0c4d19035fdc8a5b3508c9a1f69cbb0a7011f2427febadb905aba
njrat
00b11363c9cd9f5e944789c5c8c8f190cb8952e572fcad351c10a0ffe4809765
njrat
08da1c7771ae637a3b09d9d636b97d6cefdd1794fe3de4ade9b676188e057370
njrat
21ac08fc21c99e9c3522c3555adc2e54fdada5297deda9f00304694a47e1a9e6
njrat
7f02a60405c2e31590a11c7c6d0442b36ecd3709644634cc6abeb7f16fd43e59
njrat
82627d2ae3b9f73237e422cd9b5c90aa5ae978e897fae447f06c1ec23e83a778
njrat
b8b65fac514cb8b167eee1426b292e00506d347a5269a17bc76a4c9f28323b98
njrat
b99755b5ef8145a14c9997d0702cad519f1768978c5b985da7bfc720d7de4152
njrat
cd0133076bb2594d02cc1a9ef7976ce41006ebc60c7f84b64a8199b4801f2ec5
njrat
dd0034d34e27eec19757f2d0b46c617fad9f461380aae7c79cb9cfd5f1df0a45
njrat
+ 44 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
evasion persistence
Link:
https://tria.ge/reports/200929-2sgzpcb3c2/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Modifies service
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Modifies Windows Firewall
Unpacked files
SH256 hash:
27b5d536586dc6363e030ebd72925191a36c502ba25948c7a56b38c8fd414bfa
MD5 hash:
b240d323892729c6ce56f5b4dab0195f
SHA1 hash:
305b67450b7c9915e23f715801b435b626a6250d
Detections:
win_njrat_w1
Create hunting rule
win_njrat_g1
Create hunting rule
Link:
https://www.unpac.me/results/1df45145-312b-452b-92fa-f7a906ee1a53/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
NJRat
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/27b5d536586dc6363e030ebd72925191a36c502ba25948c7a56b38c8fd414bfa

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
Description:Detects malware from disclosed CN malware set
Reference:https://twitter.com/cyberintproject/status/961714165550342146
Rule name:Njrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect njRAT in memory
Rule name:win_njrat_w1
Create hunting rule
Author:Brian Wallace @botnet_hunter
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 27b5d536586dc6363e030ebd72925191a36c502ba25948c7a56b38c8fd414bfa

(this sample)

  
Link
https://www.virustotal.com/gui/file/27b5d536586dc6363e030ebd72925191a36c502ba25948c7a56b38c8fd414bfa/detection
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/66733/

Comments