MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b67556e2842e58862cd2591cc5624d2c27630301994c4c005ef3cab48ac7a8a0. 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: 7


Intelligence 7 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b67556e2842e58862cd2591cc5624d2c27630301994c4c005ef3cab48ac7a8a0
SHA3-384 hash: 570c703145be130e2b9932af99327290d641ca700aa0ff6fe6fbefbe1d2d52e985b5e0ef5ef014245736f27f3339ffb0
SHA1 hash: 93e66ff675f563ca5d3df6fb3388155429f04efe
MD5 hash: faa4dd7e33869cc28dacaad1db904118
humanhash: alaska-louisiana-three-music
File name:b67556e2842e58862cd2591cc5624d2c27630301994c4c005ef3cab48ac7a8a0
Download: download sample
Signature njrat
Create hunting rule
File size:511'325 bytes
First seen:2020-11-13 16:02:50 UTC
Last seen:2024-07-24 20:39:34 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash fcf1390e9ce472c7270447fc5c61a0c1 (863 x DCRat, 118 x NanoCore, 94 x njrat)
ssdeep 6144:MJdtgZfR3UkTJuwhmiRPlYG2ugwq8cvTkBXUFUUNP6IQgqhJFuBr2QiI:itKkkTJustlvLq8cvwBSPf0PGrP
TLSH F1B4BF01EB81ECB7E1B265318A091F999B7635208E68671577F94ADF8F6C6401E20FF3
Reporter seifreed
Tags:NjRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
81
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
Win.Packed.Emotet-9790818-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Creating a file in the %temp% subdirectories
Running batch commands
Creating a process from a recently created file
Enabling the 'hidden' option for files in the %temp% directory
Creating a file in the %AppData% directory
Creating a file
Enabling the 'hidden' option for recently created files
Creating a process with a hidden window
Connection attempt
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Launching the process to change the firewall settings
Enabling autorun by creating a 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:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/534656
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
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
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: 316428 Sample: 433RNOiT2g Startdate: 14/11/2020 Architecture: WINDOWS Score: 100 51 Malicious sample detected (through community Yara rule) 2->51 53 Antivirus detection for dropped file 2->53 55 Multi AV Scanner detection for dropped file 2->55 57 9 other signatures 2->57 11 433RNOiT2g.exe 1 13 2->11         started        14 server.exe 2 2->14         started        16 server.exe 2 2->16         started        18 server.exe 2 2->18         started        process3 file4 45 C:\Users\user\AppData\Local\Temp\...\000.exe, PE32 11->45 dropped 20 cmd.exe 1 11->20         started        process5 process6 22 000.exe 1 9 20->22         started        26 conhost.exe 20->26         started        file7 43 C:\Users\user\AppData\Local\...\Server.exe, PE32 22->43 dropped 67 Multi AV Scanner detection for dropped file 22->67 28 Server.exe 1 5 22->28         started        signatures8 process9 file10 47 C:\Users\user\AppData\Roaming\server.exe, PE32 28->47 dropped 69 Antivirus detection for dropped file 28->69 71 Multi AV Scanner detection for dropped file 28->71 73 Machine Learning detection for dropped file 28->73 32 server.exe 2 5 28->32         started        signatures11 process12 dnsIp13 49 192.168.1.65, 7777 unknown unknown 32->49 41 C:\...\e1ff9fa41877bbbbcfd97c7b5e079246.exe, PE32 32->41 dropped 59 Antivirus detection for dropped file 32->59 61 Multi AV Scanner detection for dropped file 32->61 63 Machine Learning detection for dropped file 32->63 65 2 other signatures 32->65 37 netsh.exe 1 3 32->37         started        file14 signatures15 process16 process17 39 conhost.exe 37->39         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b67556e2842e58862cd2591cc5624d2c27630301994c4c005ef3cab48ac7a8a0/
Threat name:
Win32.Trojan.Rasftuby
Create hunting rule
Status:
Malicious
First seen:
2020-11-13 16:15:09 UTC
AV detection:
21 of 29 (72.41%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wz2vnyuefzmimlgsleomkysnfqtwgaybtfgeyac66pfljcwhvcqa._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
evasion persistence
Link:
https://tria.ge/reports/201113-e75b4t3ttj/
Behaviour
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
Unpacked files
SH256 hash:
b67556e2842e58862cd2591cc5624d2c27630301994c4c005ef3cab48ac7a8a0
MD5 hash:
faa4dd7e33869cc28dacaad1db904118
SHA1 hash:
93e66ff675f563ca5d3df6fb3388155429f04efe
Link:
https://www.unpac.me/results/a250e91c-d7b5-4778-8faa-2dfce498b7bd/
SH256 hash:
c0fcee4b170ba96c247d421497464563d5183fde2a86c5c92bdd0d1e935f7c9f
MD5 hash:
d2ba47b44742d40c11c4db08276c273c
SHA1 hash:
931e3f361a8a5c8f535594d98add0ed42dac0c40
Detections:
win_njrat_w1
Create hunting rule
win_njrat_g1
Create hunting rule
Link:
https://www.unpac.me/results/a250e91c-d7b5-4778-8faa-2dfce498b7bd/
Parent samples :
090e9567b0be8d2dd04b2f10d103c920788c987d7ecee14aad28d2ec7c32a6f5
a6eaffb9d9d278bfcfe0a56c9474cba7c190ce5922ad2580a0c6c0352ac268e7
3b1e7e495d78f1b4a7fd801430e1e52c43c92b23c0641cee3065c75484e1da9b
b67556e2842e58862cd2591cc5624d2c27630301994c4c005ef3cab48ac7a8a0
fefdd2a90c1eda565689d37b29b0a36d479f18ef17a1c631eb021ccb9a62e8b7
Please note that we are no longer able to provide a coverage score for Virus Total.

File information

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

  
Delivery method
Other

Comments