MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 87b9f4d3b13c5e4d0a5241193c672472c0fc84126a7c91672fae462f83eb2d2a. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 87b9f4d3b13c5e4d0a5241193c672472c0fc84126a7c91672fae462f83eb2d2a
SHA3-384 hash: 0b27c5b3bbbacbb5af6fd90032b828404e1a4ede7c3eb48b92f901e83dd513d6b7427f5883d3725cd86f7c69666cd3ca
SHA1 hash: 3f11f2346cf3ac909451b330a1e2d6718f634a34
MD5 hash: fde031b411cbb93364b08a6d435cba4d
humanhash: may-august-florida-may
File name:87b9f4d3b13c5e4d0a5241193c672472c0fc84126a7c91672fae462f83eb2d2a
Download: download sample
Signature njrat
Create hunting rule
File size:2'474'496 bytes
First seen:2021-02-28 07:25:07 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash baa93d47220682c04d92f7797d9224ce (139 x RiseProStealer, 26 x Xtrat, 18 x CoinMiner)
ssdeep 49152:3FIhcOhgmxIKeQUxILJOEWjfid9Lb90xA7Tj:WhcMgmxIKe7xI4EW789LbwAvj
Threatray 72 similar samples on MalwareBazaar
TLSH 84B52A62B50571CBD08F277886A7CF82585E02BD4B204DC3A86D65BE7DA3EC426BFD14
Reporter JAMESWT_WT
Tags:NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
708
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
87b9f4d3b13c5e4d0a5241193c672472c0fc84126a7c91672fae462f83eb2d2a
Verdict:
Malicious activity
Analysis date:
2021-02-28 08:00:23 UTC
Tags:
rat njrat bladabindi
Link:
https://app.any.run/tasks/275d09da-dfdc-4bbb-88c5-2acd08e605cc

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
njRat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/119963/
Detection(s):
SecuriteInfo.com.EXE.Obfus-4.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Creating a process with a hidden window
Creating a window
Connection attempt
Sending a UDP request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Launching the process to change the firewall settings
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.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/620787
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Creates autostart registry keys with suspicious names
Detected unpacking (changes PE section rights)
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 contains section with special chars
Tries to detect sandboxes / dynamic malware analysis system (registry check)
Tries to detect virtualization through RDTSC time measurements
Uses netsh to modify the Windows network and firewall settings
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/87b9f4d3b13c5e4d0a5241193c672472c0fc84126a7c91672fae462f83eb2d2a/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2021-02-28 00:57:36 UTC
AV detection:
20 of 48 (41.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=q647ju5rhrpe2cssiemtyzzeolapzbasnj6jczzpvzdc7a7lfuva._file
Verdict:
malicious
Similar samples:
07cf6baf41520d0e97f2010bf76c2ed10509fbf599209ae4bc250eb375515114
njrat
30e374185ded5944c1ff0b2150cdaf2af9decb76a41089351cd21db2c3d1afae
njrat
37cb831726dc1877ea59cf5618e4fa224368bbd64a7047dec6fb554a6a17d4c2
njrat
49771de8bcea44c22d54d1eebc9f05ff0d33f66355fbf9dd77e7e891cd062bcc
njrat
6057a10b27aebb92f7d961ce23929dc41579f6da1dcbf28572d8c5f0ffac488b
njrat
632315695bf3d61c6249ddf215df529aa5459840e1ad75a388c6af06f7acc99c
njrat
8e76055823664f0cabcd8fdd17ccdef01f0dcc584346b59d8c0dfbfefa547ab2
njrat
ada1c5359c35e6b70c5a2d5533f9d725f86a1e155c8486bfd2941c9b40478ea2
njrat
adc220109f73acdd307036a6d14bffa68103a48e2305c3a4f1533aab74d9deb8
njrat
b0c5153cf37bc26d5845c41dd969822cfc272186c49f0b447060259787bf024a
njrat
+ 62 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  9/10
Tags:
evasion persistence
Link:
https://tria.ge/reports/210228-x28shjed46/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Adds Run key to start application
Checks BIOS information in registry
Identifies Wine through registry keys
Loads dropped DLL
Executes dropped EXE
Modifies Windows Firewall
Identifies VirtualBox via ACPI registry values (likely anti-VM)
Unpacked files
SH256 hash:
87b9f4d3b13c5e4d0a5241193c672472c0fc84126a7c91672fae462f83eb2d2a
MD5 hash:
fde031b411cbb93364b08a6d435cba4d
SHA1 hash:
3f11f2346cf3ac909451b330a1e2d6718f634a34
Link:
https://www.unpac.me/results/cf364001-ce5e-44e0-849a-7a21b9d15027/
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/87b9f4d3b13c5e4d0a5241193c672472c0fc84126a7c91672fae462f83eb2d2a

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:Ping_Del_method_bin_mem
Create hunting rule
Author:James_inthe_box
Description:cmd ping IP nul del
Rule name:RAT_njRat
Create hunting rule
Author:Kevin Breen <kevin@techanarchy.net>
Description:Detects njRAT
Reference:http://malwareconfig.com/stats/njRat
Rule name:win_njrat_w1
Create hunting rule
Author:Brian Wallace @botnet_hunter <bwall@ballastsecurity.net>
Description:Identify njRat

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/119963/

Comments