MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4341cc7570f0ae53f0968f57a7246c7202a5528602d309adc46158136f33236. 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: 13


Intelligence 13 IOCs 5 YARA 6 File information Comments
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SHA256 hash: b4341cc7570f0ae53f0968f57a7246c7202a5528602d309adc46158136f33236
SHA3-384 hash: 194564d43985329d7045d80b6b16ffe87cc032f56ab8e96f38ab0d166b6e6a6266485633900ac50f20f67b2b3e22d379
SHA1 hash: 2f87ad0e5efa5e4f1139e49455746551e25f20d2
MD5 hash: 66e11b8e2c9d0c63c49b8acdbd029194
humanhash: vermont-carpet-mockingbird-south
File name:B4341CC7570F0AE53F0968F57A7246C7202A5528602D3.exe
Download: download sample
Signature njrat
Create hunting rule
File size:44'032 bytes
First seen:2022-02-22 21:41:24 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 384:cZy9iNUst+3gUy6f3b2+YMQj9JqK9D9O5UE5QzwBlpJNakkjh/TzF7pWnqSgreTD:ajwQh6/b98jqvQO+rK+L
Threatray 172 similar samples on MalwareBazaar
TLSH T15613E78CB784E175D5FF8BF1A492B2890B719017A902A30FD9F154D94BB3EC09A11EE7
Reporter abuse_ch
Tags:exe NjRAT RAT


Avatar
abuse_ch
njrat C2:
3.131.207.170:13786

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
3.131.207.170:13786 https://threatfox.abuse.ch/ioc/390185/
3.128.107.74:13786 https://threatfox.abuse.ch/ioc/390186/
3.138.45.170:13786 https://threatfox.abuse.ch/ioc/390187/
13.59.15.185:13786 https://threatfox.abuse.ch/ioc/390188/
52.14.18.129:13786 https://threatfox.abuse.ch/ioc/390189/

Intelligence

File Origin
# of uploads :
1
# of downloads :
331
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Njrat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/243483/
Detection(s):
Win.Packed.Generic-7672855-0
Create hunting rule

Win.Packed.njRAT-7672853-1
Create hunting rule

Win.Packed.Msilperseus-9220094-0
Create hunting rule

Win.Packed.Generic-9795615-0
Create hunting rule

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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Creating a process from a recently created file
Creating a file
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Sending a custom TCP request
Enabling the 'hidden' option for recently created files
Creating a window
Searching for synchronization primitives
DNS request
Using the Windows Management Instrumentation requests
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm bladabindi cmd.exe control.exe greyware keylogger njrat obfuscated packed rat replace.exe schtasks.exe update.exe
Link:
https://www.filescan.io/uploads/621558ae875593a3cc05baba/reports/9fcc957f-50bb-4e5a-a69b-44552680000e/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:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/bd08baba-ff0a-412d-b6af-931deb179ace
Result
Threat name:
njRat
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/944353
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Connects to many ports of the same IP (likely port scanning)
Detected njRat
Drops PE files to the startup folder
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Protects its processes via BreakOnTermination flag
Sigma detected: Suspicius Add Task From User AppData Temp
Sigma detected: Suspicius Schtasks From Env Var Folder
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 576832 Sample: B4341CC7570F0AE53F0968F57A7... Startdate: 22/02/2022 Architecture: WINDOWS Score: 100 36 2.tcp.ngrok.io 2->36 44 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->44 46 Multi AV Scanner detection for domain / URL 2->46 48 Found malware configuration 2->48 50 13 other signatures 2->50 9 B4341CC7570F0AE53F0968F57A7246C7202A5528602D3.exe 1 5 2->9         started        12 Server.exe 3 2->12         started        15 drivers.exe 2 2->15         started        17 3 other processes 2->17 signatures3 process4 file5 32 C:\Users\user\AppData\Roaming\drivers.exe, PE32 9->32 dropped 34 B4341CC7570F0AE53F...2A5528602D3.exe.log, ASCII 9->34 dropped 19 drivers.exe 3 6 9->19         started        60 Antivirus detection for dropped file 12->60 62 Multi AV Scanner detection for dropped file 12->62 64 Machine Learning detection for dropped file 12->64 signatures6 process7 dnsIp8 38 2.tcp.ngrok.io 13.59.15.185, 13786, 49746, 49747 AMAZON-02US United States 19->38 40 3.128.107.74, 13786, 49765, 49786 AMAZON-02US United States 19->40 42 3 other IPs or domains 19->42 28 C:\Users\user\AppData\...\Driver NVIDIA.exe, PE32 19->28 dropped 30 C:\Users\user\AppData\Local\Temp\Server.exe, PE32 19->30 dropped 52 Antivirus detection for dropped file 19->52 54 Multi AV Scanner detection for dropped file 19->54 56 Protects its processes via BreakOnTermination flag 19->56 58 3 other signatures 19->58 24 schtasks.exe 1 19->24         started        file9 signatures10 process11 process12 26 conhost.exe 24->26         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b4341cc7570f0ae53f0968f57a7246c7202a5528602d309adc46158136f33236/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2022-02-22 02:04:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
26 of 28 (92.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wq2bzr2xb4fokpyjnd2xu4sgy4qcuvjimawtbgw4iykycnxtgi3a._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
3828adb58a4b478ffa4fadbab6d2b56c4fc7e561c4e45b0129329595fb0ffbfc
njrat
60a1274f15d4c850c1586946c4ead1c569adc9dcb50811e0202b653597f27bf1
njrat
6fccf76fe3b419e6da88a6fddf207463355d1ba85a2858c46a11713331c39f5a
njrat
bfa74e548efbc9dda9420f88bb84f6f23c034399a16df9093b6a27e33621e44b
njrat
d99dab4fd5138c6eda388db1f502b70af074b4080088c2eaa363e382722efbd8
njrat
dadc79b9206cdfbdd2a5b179f483d07e1c339798cc0f9368367c3bc919c73c29
njrat
db0031942b3f6b1e7558e8754a068be14f4fc11000f2efd1139b985c2438d301
njrat
df28b4119e175dc405ccc0b6a8602a5535e6fcf4c3e0878537911a5395fe7315
njrat
+ 162 additional samples on MalwareBazaar
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat botnet: bomj persistence suricata trojan
Link:
https://tria.ge/reports/220222-1kc22afdem/
Behaviour
Creates scheduled task(s)
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Adds Run key to start application
Drops startup file
Loads dropped DLL
Executes dropped EXE
njRAT/Bladabindi
suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)
Malware Config
C2 Extraction:
2.tcp.ngrok.io:13786
Unpacked files
SH256 hash:
b4341cc7570f0ae53f0968f57a7246c7202a5528602d309adc46158136f33236
MD5 hash:
66e11b8e2c9d0c63c49b8acdbd029194
SHA1 hash:
2f87ad0e5efa5e4f1139e49455746551e25f20d2
Link:
https://www.unpac.me/results/12e9404e-4045-4961-b0c7-d9457826aaaf/
Malware family:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/b4341cc7570f/report/overview.html
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/b4341cc7570f0ae53f0968f57a7246c7202a5528602d309adc46158136f33236

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:CN_disclosed_20180208_c_RID2E71
Create hunting rule
Author:Florian Roth
Description:Detects malware from disclosed CN malware set
Reference:https://twitter.com/cyberintproject/status/961714165550342146
Rule name:malware_Njrat_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect njRAT in memory
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_LightDefender_Njrat_Rule
Create hunting rule
Author:Skystars LightDefender
Description:Detects Njrat
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.

Cape
Cape
https://www.capesandbox.com/analysis/243483/

Comments