MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b0906674cc1eaca6a373175878614cc50ea6b10e1ad7d7d6ff48c6565758c469. 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: 15


Intelligence 15 IOCs 1 YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b0906674cc1eaca6a373175878614cc50ea6b10e1ad7d7d6ff48c6565758c469
SHA3-384 hash: 2e57a96c3cf7924af1c93872eee071a64350f651a45c55f31962e135f7f7cccfa4d06d769ef2de0b7630cca590043b59
SHA1 hash: beb9ac1e75f2e011e1423c247a77df3b8ea0ce1f
MD5 hash: 9f613385c1de711a203d7994b807d564
humanhash: vegan-avocado-tennessee-maryland
File name:skle.bin
Download: download sample
Signature njrat
Create hunting rule
File size:81'920 bytes
First seen:2022-07-12 10:53:39 UTC
Last seen:2022-07-13 13:48:03 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'752 x AgentTesla, 19'658 x Formbook, 12'248 x SnakeKeylogger)
ssdeep 1536:abM5odFw/J+gRJNeeYF8KXekLJCZaFW/AGQa8vtTTneOXE:abYozQ+yJQTF8KukLIx/Ovt+OX
TLSH T1B383CF8D7BE081A8C9FD1A7709B2E112077AE14F1E23DD0C8EF564A936636908F14AE5
TrID 61.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.0% (.SCR) Windows screen saver (13101/52/3)
8.8% (.EXE) Win64 Executable (generic) (10523/12/4)
5.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
File icon (PE):PE icon
dhash icon 809094b4b4b4c840 (1 x njrat)
Reporter KdssSupport
Tags:exe NjRAT


Avatar
KdssSupport
Uploaded with API

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
18.198.77.177:15785 https://threatfox.abuse.ch/ioc/828524/

Intelligence

File Origin
# of uploads :
2
# of downloads :
386
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
njrat
Create hunting rule
ID:
1
File name:
skle.exe
Verdict:
Malicious activity
Analysis date:
2022-07-12 10:38:26 UTC
Tags:
rat njrat bladabindi trojan
Link:
https://app.any.run/tasks/a14ef301-35cf-4234-aad0-bd7c43336e31

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/286580/
Detection(s):
Win.Trojan.Generic-6417450-0
Create hunting rule

Win.Trojan.Generic-6454614-0
Create hunting rule

Win.Trojan.Generic-6454615-0
Create hunting rule

Win.Trojan.B-468
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Enabling the 'hidden' option for analyzed file
Creating a file in the %AppData% directory
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
Searching for synchronization primitives
DNS request
Using the Windows Management Instrumentation requests
Sending a custom TCP request
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
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:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd.exe fingerprint greyware keylogger njrat packed rat stealer
Link:
https://www.filescan.io/uploads/62cd530f7d5b150059f8619d/reports/1df4da59-8948-45de-b792-bc9471ad176c/overview
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.
Malware family:
Mimikatz
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9d53640c-04e2-4c79-9c32-e435c5a513eb
Result
Threat name:
njRat
Create hunting rule
Detection:
malicious
Classification:
spre.troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1029369
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
C2 URLs / IPs found in malware configuration
Contains functionality to log keystrokes (.Net Source)
Creates autorun.inf (USB autostart)
Creates autostart registry keys with suspicious names
Detected njRat
Drops PE files to the startup folder
Drops PE files with benign system names
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
Protects its processes via BreakOnTermination flag
Sigma detected: Drops fake system file at system root drive
Snort IDS alert for network traffic
Uses netsh to modify the Windows network and firewall settings
Yara detected Generic Downloader
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 661863 Sample: skle.bin Startdate: 12/07/2022 Architecture: WINDOWS Score: 100 46 Snort IDS alert for network traffic 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 Antivirus detection for dropped file 2->50 52 13 other signatures 2->52 8 skle.exe 1 6 2->8         started        11 system.exe 3 2->11         started        13 system.exe 2 2->13         started        15 system.exe 2 2->15         started        process3 file4 38 C:\Users\user\AppData\Roaming\system.exe, PE32 8->38 dropped 40 C:\Users\user\...\system.exe:Zone.Identifier, ASCII 8->40 dropped 42 C:\Users\user\AppData\Local\...\skle.exe.log, ASCII 8->42 dropped 17 system.exe 2 11 8->17         started        process5 dnsIp6 44 4.tcp.eu.ngrok.io 3.127.253.86, 15785, 49764 AMAZON-02US United States 17->44 30 C:\svchost.exe, PE32 17->30 dropped 32 C:\...\95d7a0e1ad765f549db708dd171501c3.exe, PE32 17->32 dropped 34 C:\svchost.exe:Zone.Identifier, ASCII 17->34 dropped 36 2 other malicious files 17->36 dropped 54 Antivirus detection for dropped file 17->54 56 Multi AV Scanner detection for dropped file 17->56 58 Protects its processes via BreakOnTermination flag 17->58 60 7 other signatures 17->60 22 taskkill.exe 1 17->22         started        24 netsh.exe 1 3 17->24         started        file7 signatures8 process9 process10 26 conhost.exe 22->26         started        28 conhost.exe 24->28         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b0906674cc1eaca6a373175878614cc50ea6b10e1ad7d7d6ff48c6565758c469/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2022-07-12 10:54:14 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
26 of 26 (100.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wcigm5gmd2wkni3tc5mhqykmyuhknmiodll5pvx7jddfmv2yyruq._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat botnet:hacked
Link:
https://tria.ge/reports/220712-mzjlgafaan/
Malware Config
C2 Extraction:
4.tcp.eu.ngrok.io:15785
Unpacked files
SH256 hash:
b0906674cc1eaca6a373175878614cc50ea6b10e1ad7d7d6ff48c6565758c469
MD5 hash:
9f613385c1de711a203d7994b807d564
SHA1 hash:
beb9ac1e75f2e011e1423c247a77df3b8ea0ce1f
Detections:
win_njrat_g1
Create hunting rule
win_njrat_w1
Create hunting rule
Link:
https://www.unpac.me/results/c52cafaa-5a5f-45f7-a05f-f8c6c7fb2f00/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b0906674cc1eaca6a373175878614cc50ea6b10e1ad7d7d6ff48c6565758c469

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:MALWARE_Win_NjRAT
Create hunting rule
Author:ditekSHen
Description:Detects NjRAT / Bladabindi
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_netsh_firewall_command
Create hunting rule
Author:SECUINFRA Falcon Team
Rule name:SUSP_Ngrok_URL
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects a PE file that contains an ngrok.io URL. This can be used as C2 channel
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.

Web download

njrat

Executable exe b0906674cc1eaca6a373175878614cc50ea6b10e1ad7d7d6ff48c6565758c469

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/286580/

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