MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c49196fbcc615b4145c095b26fd716cb4540b0b7a58693eaa987ebc485e20865. 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: 8


Intelligence 8 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c49196fbcc615b4145c095b26fd716cb4540b0b7a58693eaa987ebc485e20865
SHA3-384 hash: 9a80b1f4eeed1369b0e4c3e286e62269a74a4dd5dcc5b9e7af096b816a00c4e2f909aeec881783cfbda954f93fb672f7
SHA1 hash: 20ae5c137ab9287e5e9d12b7aad7bdba67310762
MD5 hash: d81d4f9564621b138e5d2675b84bea40
humanhash: mobile-sink-hamper-asparagus
File name:DKukNyLg.exe
Download: download sample
Signature njrat
Create hunting rule
File size:32'768 bytes
First seen:2020-09-19 00:02:21 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 384:CZLBvjluAczvU8oHvloNFzTWK45ioTHJu3Wi2V9laJSEkLDOHYCFXPzlpmIMxTZl:CpBvjlu3vU8h+i8pVX1mF7G715
Threatray 244 similar samples on MalwareBazaar
TLSH E3E2F70537AA4703C62D03B94926471647F1CE834527EB5F1CD9B4ED1DBB7808E81AAB
Reporter pmelson
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
134
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Njrat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/63555/
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

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 file
Creating a process with a hidden window
Creating a window
DNS request
Using the Windows Management Instrumentation requests
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
Sending a TCP request to an infection source
Enabling autorun by creating a file
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
spre.troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/470494
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 to the startup folder
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 domain / URL
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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Uses dynamic DNS services
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: 287680 Sample: DKukNyLg.exe Startdate: 19/09/2020 Architecture: WINDOWS Score: 100 35 infoupdates.sytes.net 2->35 43 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->43 45 Multi AV Scanner detection for domain / URL 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 16 other signatures 2->49 9 DKukNyLg.exe 3 5 2->9         started        13 svchost.exe 1 1 2->13         started        16 svchost.exe 1 3 2->16         started        18 7 other processes 2->18 signatures3 process4 dnsIp5 31 C:\Users\user\AppData\Local\...\svchost.exe, PE32 9->31 dropped 33 C:\Users\user\AppData\...\DKukNyLg.exe.log, ASCII 9->33 dropped 59 Drops PE files with benign system names 9->59 20 svchost.exe 7 5 9->20         started        41 127.0.0.1 unknown unknown 13->41 file6 signatures7 process8 dnsIp9 37 hackeretico.duckdns.org 186.207.217.97, 49732, 49738, 49741 CLAROSABR Brazil 20->37 39 infoupdates.sytes.net 20->39 29 C:\...\0ecb90bd2a538da7e2f367c75c959f59.exe, PE32 20->29 dropped 51 Antivirus detection for dropped file 20->51 53 System process connects to network (likely due to code injection or exploit) 20->53 55 Multi AV Scanner detection for dropped file 20->55 57 3 other signatures 20->57 25 netsh.exe 3 20->25         started        file10 signatures11 process12 process13 27 conhost.exe 25->27         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c49196fbcc615b4145c095b26fd716cb4540b0b7a58693eaa987ebc485e20865/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2020-09-19 00:03:06 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ysizn66mmfnucroaswzg7vywzncubmfxuwdjh2vjq7v4jbpcbbsq._file
Verdict:
malicious
Similar samples:
139440ea99f0fdb275e96e8b749b64ca0528468f3b243bee6ada39b6db6327ac
njrat
14ba5f94a671a38e16b5166ebca44ddacd6fde3226015676f9c369c992b5d2f8
njrat
2b942243439c92b4921032a08567d76c0baff766661083fe8f6a9ab66966926d
njrat
2c46535200a9f6a3e9b5c0553cf2e94f939bf264bf3a29aa92b7c3fb13997287
njrat
2e71e2197518ae4077d0968f2f666635d9a1f822802aca08f092f488629d900b
njrat
5691aaf1f0f061589f0b1e28b72f25fdd63016ee069156c85cacbe5463cf9dbc
njrat
670a68a8f5bcef881c0475c26b29113821ee61a04b60148500318e3eb01cef36
njrat
96e77706123512b6eb8b458250f8ec78becfd53c17f016bd1e61a5b7ddea2cc4
njrat
9a0b8d04aac91f001774fb5c66bc9ad34dcbf1bdddfa487979b513d8e2c23fe4
njrat
af21243da675a515c8e2ca9d00b5628c1201125b1a29d46a9df0cb0b63769942
njrat
+ 234 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
persistence evasion
Link:
https://tria.ge/reports/200919-d1vzqhm6gx/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Modifies service
Adds Run key to start application
Adds Run key to start application
Drops startup file
Loads dropped DLL
Drops startup file
Executes dropped EXE
Modifies Windows Firewall
Executes dropped EXE
Modifies Windows Firewall
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/c49196fbcc615b4145c095b26fd716cb4540b0b7a58693eaa987ebc485e20865

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 c49196fbcc615b4145c095b26fd716cb4540b0b7a58693eaa987ebc485e20865

(this sample)

  
Link
https://www.virustotal.com/gui/file/c49196fbcc615b4145c095b26fd716cb4540b0b7a58693eaa987ebc485e20865/detection
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/63555/

Comments