MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 798eab01e5d7f1c78e3f7db514f3611ae85e468405af144245f55c8f2657c6d9. 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: 798eab01e5d7f1c78e3f7db514f3611ae85e468405af144245f55c8f2657c6d9
SHA3-384 hash: 170ce7e6487bed4d6360abf3123407e6406de5eca8a5088e5036f0fbd056540c768cf81e72dd47d07f918493c4da3b9e
SHA1 hash: ce36c02187ad59a192adfffda04204962cb21604
MD5 hash: d28c0a50c74823b008abb7279d88e33c
humanhash: happy-uncle-mexico-august
File name:798eab01e5d7f1c78e3f7db514f3611ae85e468405af144245f55c8f2657c6d9
Download: download sample
Signature njrat
Create hunting rule
File size:1'194'496 bytes
First seen:2021-02-28 07:10:27 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:jKoDUvz3SwyWQNAzwb1vBYlxuynLGcAdLgbLa5JE:eoovzCtWQmzwb1GKysdLoLa5e
Threatray 4 similar samples on MalwareBazaar
TLSH 104523D3AE0569F4EC29A076A4399CA3A30A38AF0D439476F15AF33B5052593CC6FF15
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:
798eab01e5d7f1c78e3f7db514f3611ae85e468405af144245f55c8f2657c6d9
Verdict:
Malicious activity
Analysis date:
2021-02-28 08:07:38 UTC
Tags:
rat njrat bladabindi
Link:
https://app.any.run/tasks/bb059b03-787e-4297-96a3-f10f753eee62

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/119818/
Detection(s):
PUA.Win.Packer.EnigmaProtector-19
Create hunting rule

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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Enabling the 'hidden' option for analyzed file
Creating a file in the %AppData% directory
Sending a UDP request
Creating a process from a recently created file
Creating a file
Enabling the 'hidden' option for recently created files
Creating a process with a hidden window
Creating a window
Connection attempt
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Launching the process to change the firewall settings
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/621115
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
Changes security center settings (notifications, updates, antivirus, firewall)
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 PE files to the startup folder
Drops PE files with benign system names
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
Sigma detected: Suspicious Svchost Process
Sigma detected: System File Execution Location Anomaly
System process connects to network (likely due to code injection or exploit)
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: 359551 Sample: 4I3NQ4JM5e Startdate: 28/02/2021 Architecture: WINDOWS Score: 100 51 cdn.onenote.net 2->51 55 Malicious sample detected (through community Yara rule) 2->55 57 Antivirus detection for dropped file 2->57 59 Antivirus / Scanner detection for submitted sample 2->59 61 12 other signatures 2->61 9 4I3NQ4JM5e.exe 1 6 2->9         started        13 svchost.exe 2->13         started        15 svchost.exe 3 2->15         started        17 11 other processes 2->17 signatures3 process4 dnsIp5 41 C:\Users\user\AppData\Roaming\svchost.exe, PE32 9->41 dropped 43 C:\Users\user\...\svchost.exe:Zone.Identifier, ASCII 9->43 dropped 45 C:\Users\user\AppData\...\4I3NQ4JM5e.exe.log, ASCII 9->45 dropped 71 Detected unpacking (changes PE section rights) 9->71 73 Detected unpacking (overwrites its own PE header) 9->73 75 Hides threads from debuggers 9->75 77 Drops PE files with benign system names 9->77 20 svchost.exe 2 11 9->20         started        79 Changes security center settings (notifications, updates, antivirus, firewall) 13->79 25 MpCmdRun.exe 1 13->25         started        47 127.0.0.1 unknown unknown 17->47 49 192.168.2.1 unknown unknown 17->49 file6 signatures7 process8 dnsIp9 53 185.25.50.196, 49718, 49719, 49723 IST-ASLT Lithuania 20->53 33 C:\svchost.exe, PE32 20->33 dropped 35 C:\...\5cc3254ed85503940638c1883cef5833.exe, PE32 20->35 dropped 37 C:\svchost.exe:Zone.Identifier, ASCII 20->37 dropped 39 2 other malicious files 20->39 dropped 63 Antivirus detection for dropped file 20->63 65 System process connects to network (likely due to code injection or exploit) 20->65 67 Multi AV Scanner detection for dropped file 20->67 69 8 other signatures 20->69 27 netsh.exe 1 3 20->27         started        29 conhost.exe 25->29         started        file10 signatures11 process12 process13 31 conhost.exe 27->31         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/798eab01e5d7f1c78e3f7db514f3611ae85e468405af144245f55c8f2657c6d9/
Threat name:
Win32.Packed.EnigmaProtector
Create hunting rule
Status:
Malicious
First seen:
2021-02-25 00:36:41 UTC
AV detection:
27 of 29 (93.10%)
Threat level:
  1/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=pghkwapf27y4pdr7pw2rj43bdluf4rueawxriqsf6voi6jsxy3mq._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-krf1jyj9va/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops autorun.inf file
Suspicious use of NtSetInformationThreadHideFromDebugger
Adds Run key to start application
Drops startup file
Loads dropped DLL
Executes dropped EXE
Modifies Windows Firewall
Unpacked files
SH256 hash:
798eab01e5d7f1c78e3f7db514f3611ae85e468405af144245f55c8f2657c6d9
MD5 hash:
d28c0a50c74823b008abb7279d88e33c
SHA1 hash:
ce36c02187ad59a192adfffda04204962cb21604
Link:
https://www.unpac.me/results/c828d248-9cf0-4b77-b528-4cf404741e4a/
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/798eab01e5d7f1c78e3f7db514f3611ae85e468405af144245f55c8f2657c6d9

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/119818/

Comments