MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5907f265be010c299b5e22d766d0fa3ee6ad2936b96dc40d8ef328cf3d388160. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5907f265be010c299b5e22d766d0fa3ee6ad2936b96dc40d8ef328cf3d388160
SHA3-384 hash: 8a2bf874ffa7be30b9ea8441c80d601c3a39f8bbe747aff04af0e0100ac735bb13719b102668cc3e54001f226439cf5c
SHA1 hash: 6da66f9f016c73ef700f7b8f3a21976f238b5b0c
MD5 hash: 9582696602b980775b6edf4046d8c251
humanhash: georgia-fanta-floor-low
File name:5907f265be010c299b5e22d766d0fa3ee6ad2936b96dc40d8ef328cf3d388160
Download: download sample
Signature njrat
Create hunting rule
File size:1'258'496 bytes
First seen:2021-02-28 07:10:36 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 2e5467cba76f44a088d39f78c5e807b6 (131 x DCRat, 112 x njrat, 79 x RedLineStealer)
ssdeep 24576:oxYIdmLcACUxkXDQO5qmilKIHaHUNb7Bm0S2pAP+2klRj8bx:oxYIdmL/uQ8iIIhR40XApklRob
Threatray 4 similar samples on MalwareBazaar
TLSH 5445236479D0469AD1240F318C97E738052D9E8A1C679CEBD0CC6E9BB437AD0A73623F
Reporter JAMESWT_WT
Tags:NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
117
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
5907f265be010c299b5e22d766d0fa3ee6ad2936b96dc40d8ef328cf3d388160
Verdict:
No threats detected
Analysis date:
2021-02-28 08:02:59 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/59b37004-5832-42b6-b20c-7006314069fe

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
EnigmaStub
Create hunting rule
Link:
https://www.capesandbox.com/analysis/119820/
Detection(s):
PUA.Win.Packer.EnigmaProtector-19
Create hunting rule

PUA.Win.Packer.EnigmaProtector-1
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a process from a recently created file
Enabling the 'hidden' option for recently created files
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
Searching for the window
Creating a window
Connection attempt
Sending a UDP request
Enabling the 'hidden' option for analyzed file
Creating a file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Launching the process to change the firewall settings
Launching a tool to kill processes
Creating a file in the mass storage device
Enabling autorun by creating a file
Enabling threat expansion on mass storage devices by creating the autorun.inf autorun file
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
spre.troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/621112
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
Creates an autostart registry key pointing to binary in C:\Windows
Creates autorun.inf (USB autostart)
Creates autostart registry keys with suspicious names
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Drops executables to the windows directory (C:\Windows) and starts them
Drops PE files to the startup folder
Hides threads from debuggers
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
PE file has nameless sections
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 signatures2 2 Behavior Graph ID: 359549 Sample: racZljvA2g Startdate: 28/02/2021 Architecture: WINDOWS Score: 100 47 Malicious sample detected (through community Yara rule) 2->47 49 Antivirus detection for dropped file 2->49 51 Antivirus / Scanner detection for submitted sample 2->51 53 10 other signatures 2->53 8 racZljvA2g.exe 1 6 2->8         started        12 system32.exe 3 2->12         started        14 system32.exe 2 2->14         started        16 system32.exe 2 2->16         started        process3 file4 39 C:\Windows\system32.exe, PE32 8->39 dropped 41 C:\Windows\system32.exe:Zone.Identifier, ASCII 8->41 dropped 43 C:\Users\user\AppData\...\racZljvA2g.exe.log, ASCII 8->43 dropped 63 Detected unpacking (changes PE section rights) 8->63 65 Detected unpacking (overwrites its own PE header) 8->65 67 Drops executables to the windows directory (C:\Windows) and starts them 8->67 18 system32.exe 2 11 8->18         started        69 Hides threads from debuggers 12->69 signatures5 process6 dnsIp7 45 95.47.244.112, 49720, 49722, 49723 TVK-ASRU Czech Republic 18->45 31 C:\svchoost.exe, PE32 18->31 dropped 33 C:\...\6e1ee07c566b8357a418a466ed505565.exe, PE32 18->33 dropped 35 C:\svchoost.exe:Zone.Identifier, ASCII 18->35 dropped 37 2 other malicious files 18->37 dropped 55 Antivirus detection for dropped file 18->55 57 Multi AV Scanner detection for dropped file 18->57 59 Detected unpacking (changes PE section rights) 18->59 61 8 other signatures 18->61 23 netsh.exe 1 3 18->23         started        25 taskkill.exe 1 18->25         started        file8 signatures9 process10 process11 27 conhost.exe 23->27         started        29 conhost.exe 25->29         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5907f265be010c299b5e22d766d0fa3ee6ad2936b96dc40d8ef328cf3d388160/
Threat name:
Win32.Packed.EnigmaProtector
Create hunting rule
Status:
Malicious
First seen:
2021-02-26 01:25:32 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  1/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=led7ezn6aegctg26ellwnuh2h3tk2kjwxfw4idmo6mum6pjyqfqa._file
Verdict:
malicious
Similar samples:
4824693d37ee0c444b89e21a2ae1cba396927f299e88751759635b2795c1bc96
njrat
5261874485f9fe16a78a558734e8652f93db1d544f3be331e7f6adc06f43ee98
njrat
88e03236b248d004923161c7928a1546cdffd0b6e8c30a22b1d49b05dca9b2da
njrat
9cda5e5ad6ca68a803516013fbf62e6b06383b20fccf1ee6aed4730c916a3b55
njrat
Result
Malware family:
n/a
Score:
  8/10
Tags:
evasion persistence
Link:
https://tria.ge/reports/210228-mfbwk9kj46/
Behaviour
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Drops autorun.inf file
Suspicious use of NtSetInformationThreadHideFromDebugger
Adds Run key to start application
Drops startup file
Executes dropped EXE
Modifies Windows Firewall
Unpacked files
SH256 hash:
5907f265be010c299b5e22d766d0fa3ee6ad2936b96dc40d8ef328cf3d388160
MD5 hash:
9582696602b980775b6edf4046d8c251
SHA1 hash:
6da66f9f016c73ef700f7b8f3a21976f238b5b0c
Link:
https://www.unpac.me/results/fbbd078a-e4dc-4ebd-8a43-32c1f5251227/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Enigma
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/5907f265be010c299b5e22d766d0fa3ee6ad2936b96dc40d8ef328cf3d388160

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:EnigmaStub
Create hunting rule
Author:@bartblaze
Description:Identifies Enigma packer stub.
Rule name:SUSP_XORed_URL_in_EXE
Create hunting rule
Author:Florian Roth
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:win_njrat_w1
Create hunting rule
Author:Brian Wallace @botnet_hunter <bwall@ballastsecurity.net>
Description:Identify njRat
Rule name:win_smominru_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

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/119820/

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