MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e1f3b8e2c8bf9af6fc2c90883dfe5e919de71d621c521ab8e3dddbf600cb49b6. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e1f3b8e2c8bf9af6fc2c90883dfe5e919de71d621c521ab8e3dddbf600cb49b6
SHA3-384 hash: 06d4db92a3ef0d98794f0263cfef392f42f21dafbb40b88fccc88472a3b00ec0ecc03f75b3600497192c33ab64e94c57
SHA1 hash: 4247a5270c06159a1a40238eceb9ab3f943bace9
MD5 hash: 220a8d84fcd6994bc128a36a41908d05
humanhash: georgia-shade-utah-coffee
File name:myf1PRnZ.exe
Download: download sample
Signature njrat
Create hunting rule
File size:32'256 bytes
First seen:2020-10-03 11:32:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'743 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 768:R8W23OVvZVYzxDCPOm1+/CqEpvYeHQmIDUu0tiP9j:4+6SHq6vQVkAj
Threatray 28 similar samples on MalwareBazaar
TLSH 64E21B6DFBE64465C2BD06B60571950013B8D103E523F6BE4ECB24E62B3B6D84B44DF2
Reporter pmelson
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
324
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Njrat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/67910/
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.Trojan.Generic-6454614-0
Create hunting rule

Win.Trojan.Generic-6454615-0
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
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
Creating a file in the mass storage device
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
Connection attempt 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/480761
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
Protects its processes via BreakOnTermination flag
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: 292821 Sample: myf1PRnZ.exe Startdate: 03/10/2020 Architecture: WINDOWS Score: 100 35 hack567832-53485.portmap.io 2->35 39 Malicious sample detected (through community Yara rule) 2->39 41 Antivirus detection for dropped file 2->41 43 Antivirus / Scanner detection for submitted sample 2->43 45 11 other signatures 2->45 9 myf1PRnZ.exe 1 8 2->9         started        12 Trump.exe 5 2->12         started        14 Trump.exe 6 2->14         started        16 Trump.exe 5 2->16         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\Temp\Trump.exe, PE32 9->29 dropped 31 C:\Tools.exe, PE32 9->31 dropped 33 C:\Tools.exe:Zone.Identifier, ASCII 9->33 dropped 18 Trump.exe 3 8 9->18         started        process6 dnsIp7 37 hack567832-53485.portmap.io 193.161.193.99, 49738, 49740, 49741 BITREE-ASRU Russian Federation 18->37 27 C:\...\869ce98162d556ee97af31d4acf0e5ba.exe, PE32 18->27 dropped 47 Antivirus detection for dropped file 18->47 49 Multi AV Scanner detection for dropped file 18->49 51 Protects its processes via BreakOnTermination flag 18->51 53 3 other signatures 18->53 23 netsh.exe 1 3 18->23         started        file8 signatures9 process10 process11 25 conhost.exe 23->25         started       
Detection:
njrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/e1f3b8e2c8bf9af6fc2c90883dfe5e919de71d621c521ab8e3dddbf600cb49b6/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2020-10-03 11:34:07 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=4hz3rywix6npn7bmsced37s6sgo6ohlcdrjbvohd3xn7magljg3a._file
Verdict:
malicious
Similar samples:
289bb9f2125f62945f3960f0fe72381aea008539b1c6ea29a81ad66bd2f247a9
njrat
434c3b5ab0a2b53e04e4cdf6df69ab626919e3f5b9cffde95e178fe975d463b4
njrat
55b8b84b624767c78a3ba733e577c4bdcd41fe9efa691725376a74077314e436
njrat
884ef8d4d49a6c98b25f93302c1f5d56ba1bfcf73364ee0e641d94c5b300deef
njrat
88e03236b248d004923161c7928a1546cdffd0b6e8c30a22b1d49b05dca9b2da
njrat
b19df7069dc2884dc94026608f9fd4bd3f0f2543802c41dc19b78474c866d2e6
njrat
b7ae7f4453b062073d68146727f16af5d57d39758fd3f0fd7c067ba78eb27b97
njrat
c66a4d352ed249cafe427728b6c8d4eda8da23c6bef48f993beb236a6c765f35
njrat
d6969e5a50e04cb9bc0a97c3e6dd22d48580bb22f9408d3fc905882d45fcd01b
njrat
f19a67d1bda5510ca74f5a345ce1dfae91949bdfa6cfec36d4df2bc5f6f08a69
njrat
+ 18 additional samples on MalwareBazaar
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
evasion persistence trojan family:njrat
Link:
https://tria.ge/reports/201003-wh6faqw4vn/
Behaviour
Suspicious behavior: EnumeratesProcesses
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:
e1f3b8e2c8bf9af6fc2c90883dfe5e919de71d621c521ab8e3dddbf600cb49b6
MD5 hash:
220a8d84fcd6994bc128a36a41908d05
SHA1 hash:
4247a5270c06159a1a40238eceb9ab3f943bace9
Detections:
win_njrat_w1
Create hunting rule
win_njrat_g1
Create hunting rule
Link:
https://www.unpac.me/results/29b146ff-995d-46f4-97ca-830d50f95f82/
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/e1f3b8e2c8bf9af6fc2c90883dfe5e919de71d621c521ab8e3dddbf600cb49b6

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 e1f3b8e2c8bf9af6fc2c90883dfe5e919de71d621c521ab8e3dddbf600cb49b6

(this sample)

  
Link
https://www.virustotal.com/gui/file/e1f3b8e2c8bf9af6fc2c90883dfe5e919de71d621c521ab8e3dddbf600cb49b6/detection
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/67910/

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