MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d94deb99e0ee0053e8a256335b445e63d696471ce5f5c337df03ad3e0c7bb13b. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d94deb99e0ee0053e8a256335b445e63d696471ce5f5c337df03ad3e0c7bb13b
SHA3-384 hash: d4e8a8a84ec17dd556effbf0cf3b89ed64a6edfb83e08deb3188ad70c06a5e967763c14c723d002337d2f304f1413c81
SHA1 hash: 1deb298c493c4401b2b2f0f0ffc2e854fe7af389
MD5 hash: b496c4fec9a3e4f0d1e0c3137c9e1d24
humanhash: robin-august-zulu-potato
File name:b496c4fec9a3e4f0d1e0c3137c9e1d24.exe
Download: download sample
Signature njrat
Create hunting rule
File size:20'691'968 bytes
First seen:2023-03-28 16:30:57 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 393216:Adr3g3bEeCncaIJoeQSEMYtlefDijhjtvIl5dW/W3FSuhJAOfFvLcG:Adr3g3bEeCn1IJoeQ7MYtlefDijhjtAF
Threatray 4'386 similar samples on MalwareBazaar
TLSH T10427E0C51242BF1B83E090EF189506F433059DCED815EED6FA1CDA60589B51F07AFEAA
TrID 75.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.9% (.EXE) Win64 Executable (generic) (10523/12/4)
4.6% (.EXE) Win32 Executable (generic) (4505/5/1)
2.1% (.ICL) Windows Icons Library (generic) (2059/9)
2.1% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter abuse_ch
Tags:exe NjRAT RAT


Avatar
abuse_ch
njrat C2:
91.109.182.2:5554

Intelligence

File Origin
# of uploads :
1
# of downloads :
355
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
njrat
Create hunting rule
ID:
1
File name:
b496c4fec9a3e4f0d1e0c3137c9e1d24.exe
Verdict:
Malicious activity
Analysis date:
2023-03-28 16:33:23 UTC
Tags:
rat njrat bladabindi
Link:
https://app.any.run/tasks/589a10ec-7035-4b8d-998f-c07666d4b0f2

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Enabling the 'hidden' option for files in the %temp% directory
Creating a process with a hidden window
Enabling the 'hidden' option for recently created files
Creating a window
Searching for synchronization primitives
DNS request
Using the Windows Management Instrumentation requests
Sending a custom TCP request
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
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
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/642316478f3f4544f6cc7d6c/reports/a03222f8-31fc-4ccf-ba21-7f43ac25eb77/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/d94deb99e0ee0053e8a256335b445e63d696471ce5f5c337df03ad3e0c7bb13b
Result
Verdict:
MALICIOUS
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
spre.troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1203657
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Changes security center settings (notifications, updates, antivirus, firewall)
Creates autorun.inf (USB autostart)
Creates autostart registry keys with suspicious names
Drops PE files to the startup folder
Drops PE files to the user root directory
Drops PE files with benign system names
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies the windows firewall
Multi AV Scanner detection for submitted file
Protects its processes via BreakOnTermination flag
Sigma detected: Drops fake system file at system root drive
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Uses dynamic DNS services
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: 836575 Sample: 5yksgS7cdE.exe Startdate: 28/03/2023 Architecture: WINDOWS Score: 100 76 thehill.ddns.net 2->76 80 Snort IDS alert for network traffic 2->80 82 Malicious sample detected (through community Yara rule) 2->82 84 Antivirus detection for URL or domain 2->84 86 9 other signatures 2->86 10 5yksgS7cdE.exe 6 2->10         started        14 svchost.exe 2->14         started        16 svchost.exe 2->16         started        19 9 other processes 2->19 signatures3 process4 dnsIp5 54 C:\Users\user\AppData\Local\...\svchost.exe, PE32 10->54 dropped 56 C:\Users\user\AppData\...\5yksgS7cdE.exe.log, ASCII 10->56 dropped 58 C:\Users\user\AppData\Local\Temp\gggg.exe, PE32 10->58 dropped 92 Drops PE files with benign system names 10->92 21 svchost.exe 1 7 10->21         started        25 gggg.exe 5 10->25         started        94 Changes security center settings (notifications, updates, antivirus, firewall) 14->94 27 MpCmdRun.exe 14->27         started        74 192.168.2.1 unknown unknown 16->74 file6 signatures7 process8 file9 50 C:\Users\user\svchost.exe, PE32 21->50 dropped 88 Drops PE files to the user root directory 21->88 90 Drops PE files with benign system names 21->90 29 svchost.exe 2 14 21->29         started        52 C:\Users\user\AppData\...\UnBanned @Sahe.exe, PE32+ 25->52 dropped 34 UnBanned @Sahe.exe 64 25->34         started        36 conhost.exe 27->36         started        signatures10 process11 dnsIp12 78 thehill.ddns.net 91.109.182.2, 49700, 49701, 5554 IELOIELOMainNetworkFR France 29->78 60 C:\svchost.exe, PE32 29->60 dropped 62 C:\...\92dbe7d6e8e863219ad3d3174f9d3d14.exe, PE32 29->62 dropped 64 C:\autorun.inf, Microsoft 29->64 dropped 96 System process connects to network (likely due to code injection or exploit) 29->96 98 Protects its processes via BreakOnTermination flag 29->98 100 Creates autorun.inf (USB autostart) 29->100 102 5 other signatures 29->102 38 netsh.exe 29->38         started        40 taskkill.exe 29->40         started        66 C:\Users\user\AppData\...\unicodedata.pyd, PE32+ 34->66 dropped 68 C:\Users\user\AppData\Local\...\ucrtbase.dll, PE32+ 34->68 dropped 70 C:\Users\user\AppData\Local\...\select.pyd, PE32+ 34->70 dropped 72 56 other files (none is malicious) 34->72 dropped 42 UnBanned @Sahe.exe 1 34->42         started        44 conhost.exe 34->44         started        file13 signatures14 process15 process16 46 conhost.exe 38->46         started        48 conhost.exe 40->48         started       
Gathering data
Threat name:
ByteCode-MSIL.Trojan.Tiggre
Create hunting rule
Status:
Malicious
First seen:
2023-03-25 16:35:43 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
17 of 37 (45.95%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=3fg6xgpa5yafh2fckyzvwrc6mpljmry44x24gn67aowt4dd3we5q._file
Verdict:
malicious
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njrat
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bd5e7c52d4dc3be4205620c532d926014d4aceab2dabed28e16553d9d1b3e559
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dab0d575cb650dae64243a3e53d3e2de98e25d819d1f87212fcbe38e54135cc0
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e31670b1360e6f78e00ad558c2da9cebec2a44d91afe3f525a660801e1b715d4
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ef35bb50d1328df4526a49ef3e02e2bf2a52629508ad6d767944a614606c36bc
njrat
fe08452040cf960e4d27560e18d8a8d6148301fb12ffb3024e5b33ff98f807ab
njrat
+ 4'376 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
evasion persistence pyinstaller
Link:
https://tria.ge/reports/230328-t1c9eaca38/
Behaviour
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Detects Pyinstaller
Enumerates physical storage devices
Program crash
Drops autorun.inf file
Adds Run key to start application
.NET Reactor proctector
Checks computer location settings
Drops startup file
Executes dropped EXE
Loads dropped DLL
Modifies Windows Firewall
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
NJRat
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/d94deb99e0ee0053e8a256335b445e63d696471ce5f5c337df03ad3e0c7bb13b

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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Comments