MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 25a7d75162a26a67fbd881ead6e879ff7e1ac8663f31388566a01fdb395ecd78. 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: 8


Intelligence 8 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 25a7d75162a26a67fbd881ead6e879ff7e1ac8663f31388566a01fdb395ecd78
SHA3-384 hash: ef5400b04b4b525bc817ef5d9bf9a7627399ee81efe643f1acd99ae5f4b2354df97ca6aa5bb3b0e24fa9398a3f20fd64
SHA1 hash: 260c22fb025a74f3603bc60a32810a02ed5e04da
MD5 hash: 644094d959a7e8655ce8387b58ecc689
humanhash: sixteen-virginia-lima-spaghetti
File name:XzSMF8U4.exe
Download: download sample
Signature njrat
Create hunting rule
File size:32'768 bytes
First seen:2020-09-19 19:19:15 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 384:PLvbDLkKcGkW+ALxjSBdzxWu8PmJLvCv5i2VL7SXCJ0kLDOHYCFXPzlpmIMxTZiL:jvbDLkgkW+dwxpV/PmF7N71p
Threatray 246 similar samples on MalwareBazaar
TLSH 34E2F70533AA4713C63D03B94826471647F1CE434537EB6F5CD9B4ED2E7B7808A81AAB
Reporter pmelson
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
137
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Njrat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/63740/
Detection(s):
Win.Trojan.B-468
Create hunting rule

Win.Trojan.Ratenjay-1
Create hunting rule

Win.Trojan.Bladabindi-6192388-0
Create hunting rule

Win.Trojan.Generic-6417450-0
Create hunting rule

Win.Dropper.njRAT-7436651-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
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
Enabling the 'hidden' option for recently created files
Enabling the 'hidden' option for files in the %temp% directory
Creating a 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
Creating a file in the mass storage device
Enabling autorun by creating a file
Enabling a "Do not show hidden files" option
Enabling threat expansion on mass storage devices by creating the autorun.inf autorun file
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
spre.troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/470601
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 the view of files in windows explorer (hidden files and folders)
Contains functionality to log keystrokes (.Net Source)
Contains functionality to spread to USB devices (.Net source)
Creates autostart registry keys with suspicious names
Drops PE files to the startup folder
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
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: 287733 Sample: XzSMF8U4.exe Startdate: 19/09/2020 Architecture: WINDOWS Score: 100 34 Malicious sample detected (through community Yara rule) 2->34 36 Antivirus detection for dropped file 2->36 38 Antivirus / Scanner detection for submitted sample 2->38 40 10 other signatures 2->40 8 XzSMF8U4.exe 3 5 2->8         started        11 118.39.153.153.exe 3 2->11         started        13 118.39.153.153.exe 2 2->13         started        15 118.39.153.153.exe 2 2->15         started        process3 file4 28 C:\Users\user\AppData\...\118.39.153.153.exe, PE32 8->28 dropped 30 C:\Users\user\AppData\...\XzSMF8U4.exe.log, ASCII 8->30 dropped 17 118.39.153.153.exe 4 5 8->17         started        process5 dnsIp6 32 118.39.153.153, 25564 KIXS-AS-KRKoreaTelecomKR Korea Republic of 17->32 26 C:\...\11e738ae7af88ee4bd62783dabb097f6.exe, PE32 17->26 dropped 42 Antivirus detection for dropped file 17->42 44 Multi AV Scanner detection for dropped file 17->44 46 Machine Learning detection for dropped file 17->46 48 3 other signatures 17->48 22 netsh.exe 3 17->22         started        file7 signatures8 process9 process10 24 conhost.exe 22->24         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/25a7d75162a26a67fbd881ead6e879ff7e1ac8663f31388566a01fdb395ecd78/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2020-09-19 19:21:05 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ewt5oulcujvgp66yqhvnn2dz757bvsdgh4ytrblguap5wok6zv4a._file
Verdict:
malicious
Similar samples:
139440ea99f0fdb275e96e8b749b64ca0528468f3b243bee6ada39b6db6327ac
njrat
14ba5f94a671a38e16b5166ebca44ddacd6fde3226015676f9c369c992b5d2f8
njrat
2b942243439c92b4921032a08567d76c0baff766661083fe8f6a9ab66966926d
njrat
2e71e2197518ae4077d0968f2f666635d9a1f822802aca08f092f488629d900b
njrat
5691aaf1f0f061589f0b1e28b72f25fdd63016ee069156c85cacbe5463cf9dbc
njrat
57f4cadd94e18ec3e75d0c0ea8492356410a0227d1319b3d4b7af670f5a82aff
njrat
96e77706123512b6eb8b458250f8ec78becfd53c17f016bd1e61a5b7ddea2cc4
njrat
9a0b8d04aac91f001774fb5c66bc9ad34dcbf1bdddfa487979b513d8e2c23fe4
njrat
af21243da675a515c8e2ca9d00b5628c1201125b1a29d46a9df0cb0b63769942
njrat
c49196fbcc615b4145c095b26fd716cb4540b0b7a58693eaa987ebc485e20865
njrat
+ 236 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
evasion persistence
Link:
https://tria.ge/reports/200919-zr5qvecwpa/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Modifies service
Adds Run key to start application
Adds Run key to start application
Drops startup file
Loads dropped DLL
Drops startup file
Executes dropped EXE
Modifies Windows Firewall
Executes dropped EXE
Modifies Windows Firewall
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/25a7d75162a26a67fbd881ead6e879ff7e1ac8663f31388566a01fdb395ecd78

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:CN_disclosed_20180208_c
Create hunting rule
Author:Florian Roth
Description:Detects malware from disclosed CN malware set
Reference:https://twitter.com/cyberintproject/status/961714165550342146
Rule name:Njrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect njRAT in memory
Rule name:win_njrat_w1
Create hunting rule
Author:Brian Wallace @botnet_hunter
Description:Identify njRat

File information

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

Web download

njrat

Executable exe 25a7d75162a26a67fbd881ead6e879ff7e1ac8663f31388566a01fdb395ecd78

(this sample)

  
Link
https://www.virustotal.com/gui/file/25a7d75162a26a67fbd881ead6e879ff7e1ac8663f31388566a01fdb395ecd78/detection
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/63740/

Comments