MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b9c636319829a3520de0d883dbdd5c6551351b0500f13c485332e32d218bf31. 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: 10


Intelligence 10 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4b9c636319829a3520de0d883dbdd5c6551351b0500f13c485332e32d218bf31
SHA3-384 hash: 21e1c8e23f722d53b6b48e43e8abe52162553df0ee7168a13357d76421410dfd63d37e76de73118b50f51ce7a80f4a3f
SHA1 hash: 8583b93e4ad2bfce35619e8812abecff4c4f4203
MD5 hash: 2f5834e8d55979c71198ad918ab9d561
humanhash: twenty-uranus-dakota-video
File name:DgVLpHHc.exe
Download: download sample
Signature njrat
Create hunting rule
File size:32'256 bytes
First seen:2020-10-06 09:47:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 768:gbCVqdzNB0zx/6LEfmv6XdvGXQmIDUu0tinMj:r6KLpEQVkBj
Threatray 31 similar samples on MalwareBazaar
TLSH 3CE22BADFBE64466D2BD0AB50571950013B8D003E523F77E4ECB24E62B6B6D84B84DF2
Reporter pmelson
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
190
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Njrat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/68553/
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
Launching the process to change the firewall settings
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Sending a TCP request to an infection source
Enabling autorun by creating a file
Result
Threat name:
njRat
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/482626
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)
Creates autostart registry keys with suspicious names
Detected njRat
Drops PE files to the startup folder
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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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: 293752 Sample: DgVLpHHc.exe Startdate: 06/10/2020 Architecture: WINDOWS Score: 100 33 gonlove288-34554.portmap.host 2->33 37 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 Antivirus detection for dropped file 2->41 43 12 other signatures 2->43 9 DgVLpHHc.exe 1 5 2->9         started        12 system.exe 3 2->12         started        14 system.exe 2 2->14         started        16 system.exe 2 2->16         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\Temp\system.exe, PE32 9->29 dropped 31 C:\Users\user\AppData\...\DgVLpHHc.exe.log, ASCII 9->31 dropped 18 system.exe 4 5 9->18         started        process6 dnsIp7 35 gonlove288-34554.portmap.host 193.161.193.99, 49723, 49727, 49733 BITREE-ASRU Russian Federation 18->35 27 C:\...\3bdcb6a5c01ac7e0716d0609e21fc044.exe, PE32 18->27 dropped 45 Antivirus detection for dropped file 18->45 47 Multi AV Scanner detection for dropped file 18->47 49 Machine Learning detection for dropped file 18->49 51 2 other signatures 18->51 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/4b9c636319829a3520de0d883dbdd5c6551351b0500f13c485332e32d218bf31/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2020-10-06 09:49:04 UTC
AV detection:
28 of 29 (96.55%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jooggyyzqkndkig6bwed3povyzkrgunqkahrhrefgmxdfuqyx4yq._file
Verdict:
malicious
Similar samples:
23ee36c32f198966a793d71f9e2f0b4e0b8c1429202f38f2fab3a25c692c5c64
njrat
289bb9f2125f62945f3960f0fe72381aea008539b1c6ea29a81ad66bd2f247a9
njrat
434c3b5ab0a2b53e04e4cdf6df69ab626919e3f5b9cffde95e178fe975d463b4
njrat
55b8b84b624767c78a3ba733e577c4bdcd41fe9efa691725376a74077314e436
njrat
884ef8d4d49a6c98b25f93302c1f5d56ba1bfcf73364ee0e641d94c5b300deef
njrat
88e03236b248d004923161c7928a1546cdffd0b6e8c30a22b1d49b05dca9b2da
njrat
b19df7069dc2884dc94026608f9fd4bd3f0f2543802c41dc19b78474c866d2e6
njrat
b7ae7f4453b062073d68146727f16af5d57d39758fd3f0fd7c067ba78eb27b97
njrat
d6969e5a50e04cb9bc0a97c3e6dd22d48580bb22f9408d3fc905882d45fcd01b
njrat
f19a67d1bda5510ca74f5a345ce1dfae91949bdfa6cfec36d4df2bc5f6f08a69
njrat
+ 21 additional samples on MalwareBazaar
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
persistence trojan family:njrat evasion
Link:
https://tria.ge/reports/201006-atmraftkcx/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Modifies service
Adds Run key to start application
Drops startup file
Loads dropped DLL
Executes dropped EXE
Modifies Windows Firewall
njRAT/Bladabindi
Unpacked files
SH256 hash:
4b9c636319829a3520de0d883dbdd5c6551351b0500f13c485332e32d218bf31
MD5 hash:
2f5834e8d55979c71198ad918ab9d561
SHA1 hash:
8583b93e4ad2bfce35619e8812abecff4c4f4203
Detections:
win_njrat_w1
Create hunting rule
win_njrat_g1
Create hunting rule
Link:
https://www.unpac.me/results/f3c48eaf-c3fa-42f3-9e86-37da53b38107/
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/4b9c636319829a3520de0d883dbdd5c6551351b0500f13c485332e32d218bf31

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:MAL_Winnti_Sample_May18_1
Create hunting rule
Author:Florian Roth
Description:Detects malware sample from Burning Umbrella report - Generic Winnti Rule
Reference:https://401trg.pw/burning-umbrella/
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 4b9c636319829a3520de0d883dbdd5c6551351b0500f13c485332e32d218bf31

(this sample)

  
Link
https://www.virustotal.com/gui/file/4b9c636319829a3520de0d883dbdd5c6551351b0500f13c485332e32d218bf31/detection
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/68553/

Comments