MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 481e40cf2d52ec501778098b0d53d9247f2b72ac0ae830457e75fc41168faffc. 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: 12


Intelligence 12 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 481e40cf2d52ec501778098b0d53d9247f2b72ac0ae830457e75fc41168faffc
SHA3-384 hash: 71cf0e8f7323ad8ec9e77acda667d15eefb961855c4730c54cfc79a73baae9c6fc453388b47b627b27ed82aaa0009955
SHA1 hash: 6355532e235916308e2146d927b54c54662f53ee
MD5 hash: 269917a10efb39f4fc0afeb29481df74
humanhash: bravo-foxtrot-butter-london
File name:481e40cf2d52ec501778098b0d53d9247f2b72ac0ae830457e75fc41168faffc
Download: download sample
Signature njrat
Create hunting rule
File size:883'712 bytes
First seen:2021-08-31 06:48:01 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash bbac62fd99326ea68ec5a33b36925dd1 (46 x AgentTesla, 38 x njrat, 27 x Formbook)
ssdeep 12288:l4lsXvtCcmVVXzzn4PJAahPl/QEdIMiVbHydEIJnJWUgan7hD3q9MmCS:l4lavt0LkLL9IMixoEgea7l3q9MmCS
Threatray 1'830 similar samples on MalwareBazaar
TLSH T1A5159E0373DDC3A1C3725273BA65BB01AEBB7C2506A1F59B2FD5093DE920162521E673
dhash icon aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter JAMESWT_WT
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
497
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
481e40cf2d52ec501778098b0d53d9247f2b72ac0ae830457e75fc41168faffc
Verdict:
Malicious activity
Analysis date:
2021-08-31 06:52:10 UTC
Tags:
rat njrat bladabindi
Link:
https://app.any.run/tasks/382fda92-b068-44e6-bd48-fcf89a320ef8

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/184023/
Detection(s):
SecuriteInfo.com.AutoIT-29.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.PUA.Base64EXE-2.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% subdirectories
Creating a process from a recently created file
Deleting a recently created file
Sending a UDP request
Creating a file
Creating a process with a hidden window
Connection attempt
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
Enabling autorun by creating a file
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/339d10e1-2614-4d7e-bbdf-cb08b53f7bb1
Result
Threat name:
njRat
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/842368
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
Drops PE files to the startup folder
Found malware configuration
Machine Learning detection for dropped file
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
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: 474800 Sample: insw3uWFp0 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 9 insw3uWFp0.exe 6 2->9         started        12 server.exe 3 2->12         started        14 server.exe 2 2->14         started        16 server.exe 2 2->16         started        process3 file4 35 C:\Users\user\AppData\Local\Temp\...\4118.exe, PE32 9->35 dropped 18 4118.exe 1 5 9->18         started        process5 file6 31 C:\Users\user\AppData\Local\Temp\server.exe, PE32 18->31 dropped 47 Antivirus detection for dropped file 18->47 49 Multi AV Scanner detection for dropped file 18->49 51 Machine Learning detection for dropped file 18->51 22 server.exe 4 5 18->22         started        signatures7 process8 dnsIp9 37 192.168.1.6, 5552 unknown unknown 22->37 33 C:\...\b382044e33ac80e8d5842b42001a6792.exe, PE32 22->33 dropped 53 Antivirus detection for dropped file 22->53 55 Multi AV Scanner detection for dropped file 22->55 57 Machine Learning detection for dropped file 22->57 59 4 other signatures 22->59 27 netsh.exe 1 3 22->27         started        file10 signatures11 process12 process13 29 conhost.exe 27->29         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/481e40cf2d52ec501778098b0d53d9247f2b72ac0ae830457e75fc41168faffc/
Threat name:
Win32.Trojan.Runner
Create hunting rule
Status:
Malicious
First seen:
2021-08-29 02:05:13 UTC
File Type:
PE (Exe)
Extracted files:
22
AV detection:
33 of 46 (71.74%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=japebtznklwfaf3ybgfq2u6zer7sw4vmbludarl6ox6ecfupv76a._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
1e77593073ce7c57226c55e20d5ca2e09c84c86a083a9d56b3dd1bb732305683
njrat
46fa7b3768b1f91187f59fb97a88e1efbbe603dc88419c73da07c627e9d57f74
njrat
4f7ee2b1be709d2dfcfb894323ac4b6a3f3b0482c646d49b051769a6e3785239
njrat
69bc3e840c7aeb2c0eaa156a23c7717fb2352c7a4e1a28deedfbc25b79b27b82
njrat
a1912487964fbfa6a9004a0889bde004a7b3d007e98706b79688bbb6229af557
njrat
bbbd41df9ee8363af5927a1b8f8b6d373edc69b34069c3a1ff0e5696138a290d
njrat
bc341eccbdfecf1616134d92035e90b0622ec6731e5c5f74418f00ce3033a689
njrat
d9009371df732bd8b3ccab8b38e9968069503292b112b2b27cb1c3c54814b3ab
njrat
e1c12e80d4fe90ebf246356de9336ba64ce4263eaf2525c27412d534b8a89b29
njrat
f4ae0a96fe157d059c62d52e5934283f6055e822451db81a0bb9f646e98dc310
njrat
+ 1'820 additional samples on MalwareBazaar
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat botnet:hacked evasion persistence trojan
Link:
https://tria.ge/reports/210831-59ywc1scvs/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Adds Run key to start application
Drops startup file
Loads dropped DLL
Executes dropped EXE
Modifies Windows Firewall
njRAT/Bladabindi
Malware Config
C2 Extraction:
192.168.1.6:5552
Unpacked files
SH256 hash:
a67ca26d8e68f546cbbddcb777e34a77d17b771f31779512fdae61270db06219
MD5 hash:
b7cb851be2cf6face938678defdb39d1
SHA1 hash:
4116ffbe66211aa63dced0d7c9f76b220b9545ed
Detections:
win_njrat_w1
Create hunting rule
win_njrat_g1
Create hunting rule
Link:
https://www.unpac.me/results/73fc92db-076f-45ce-9fe5-e0c2248b304c/
SH256 hash:
481e40cf2d52ec501778098b0d53d9247f2b72ac0ae830457e75fc41168faffc
MD5 hash:
269917a10efb39f4fc0afeb29481df74
SHA1 hash:
6355532e235916308e2146d927b54c54662f53ee
Link:
https://www.unpac.me/results/73fc92db-076f-45ce-9fe5-e0c2248b304c/
Malware family:
njRat
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/481e40cf2d52/report/overview.html
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/481e40cf2d52ec501778098b0d53d9247f2b72ac0ae830457e75fc41168faffc

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:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE).

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/184023/

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