MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e71d93f19a3e41004e671b5e107177d6fd0f9a83b6b4791ce4b1853bd6620da3. 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: 21


Intelligence 21 IOCs 1 YARA 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e71d93f19a3e41004e671b5e107177d6fd0f9a83b6b4791ce4b1853bd6620da3
SHA3-384 hash: 7fc841715f3f2a28ddc2d3989b75e10faf6b5662ab7291d7e7abd0441d18bbe404a75c9907336eaa9ae3fec57aa59ed3
SHA1 hash: 797ce8441550097a804783dfd0998e1708f66d30
MD5 hash: 4d02f58b443e52a399c6513345738069
humanhash: louisiana-paris-mirror-washington
File name:kof.exe
Download: download sample
Signature njrat
Create hunting rule
File size:37'888 bytes
First seen:2025-09-13 21:55:05 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'081 x AgentTesla, 20'056 x Formbook, 12'353 x SnakeKeylogger)
ssdeep 384:WzC4UiDzblmJEpRGyEfVL/7uOCY6oNDrAF+rMRTyN/0L+EcoinblneHQM3epzXVi:SCiHpR9EfVL6OCFoZrM+rMRa8Nu/Wt
TLSH T1A603194D7FE18168C5FD167B05B2D41207BBE04B6E23D90ECEE564AA37636C18B50AF2
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10522/11/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter abuse_ch
Tags:exe NjRAT RAT


Avatar
abuse_ch
njrat C2:
193.161.193.99:43006

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
193.161.193.99:43006 https://threatfox.abuse.ch/ioc/1589717/

Intelligence

File Origin
# of uploads :
1
# of downloads :
330
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
njrat
Create hunting rule
ID:
1
File name:
kof.exe
Verdict:
Malicious activity
Analysis date:
2025-09-13 21:39:00 UTC
Tags:
njrat
Link:
https://app.any.run/tasks/87652bbd-28a4-4926-8930-5836e91de455

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/27369/
Detection(s):
Sanesecurity.Malware.29039.UNOFFICIAL
Create hunting rule

Win.Packed.Bladabindi-7994427-0
Create hunting rule

Win.Dropper.Nanocore-10030076-0
Create hunting rule

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

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68c5e473e579c633a4b50a91
Tags:
bladabindi crimsonrat njrat
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Searching for synchronization primitives
Сreating synchronization primitives
Creating a window
Sending a custom TCP request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
base64 cmd config-extracted explorer fingerprint lolbin netsh njrat njrat rat reconnaissance vbnet windows
Link:
https://www.filescan.io/uploads/68c5e868c62f699623896747/reports/344dac58-1c85-4d91-b8e5-b1ed348d233e/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/e71d93f19a3e41004e671b5e107177d6fd0f9a83b6b4791ce4b1853bd6620da3
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-13T18:53:00Z UTC
Last seen:
2025-09-13T18:53:00Z UTC
Hits:
~100
Detections:
Trojan.Disfa.TCP.C&C Backdoor.Agent.HTTP.C&C Trojan.Win32.Gorgon.sb HEUR:Trojan-Spy.MSIL.KeyLogger.gen HEUR:Trojan.Win32.Generic HEUR:Trojan.MSIL.Crypt.gen HEUR:Trojan.MSIL.Agent.gen Trojan.Agent.UDP.C&C HEUR:Trojan.MSIL.Bladabindi.gen Backdoor.MSIL.SpyGate.sb Trojan.Zapchast.TCP.C&C Trojan.NJRat.TCP.C&C Trojan.MSIL.Agent.fnrc PDM:Trojan.Win32.Generic Backdoor.SpyGate.TCP.C&C Backdoor.Bladabindi.TCP.C&C Backdoor.Agent.TCP.C&C Trojan.MSIL.Agent.sb HEUR:Worm.Win32.Generic HEUR:Backdoor.MSIL.SpyGate.gen Backdoor.MSIL.Bladabindi.sb
Link:
https://opentip.kaspersky.com/e71d93f19a3e41004e671b5e107177d6fd0f9a83b6b4791ce4b1853bd6620da3/results?tab=lookup
Malware family:
Mimikatz
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/db00bd1b-16ba-453b-affb-377ff50d17e3
Result
Threat name:
Njrat, XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1777108
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
Drops PE files with benign system names
Found malware configuration
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
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
Sample uses string decryption to hide its real strings
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: System File Execution Location Anomaly
Suricata IDS alerts for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses netsh to modify the Windows network and firewall settings
Yara detected Njrat
Yara detected UAC Bypass using CMSTP
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1777108 Sample: kof.exe Startdate: 14/09/2025 Architecture: WINDOWS Score: 100 91 mhzlhhhh378-43006.portmap.host 2->91 93 ip-api.com 2->93 107 Suricata IDS alerts for network traffic 2->107 109 Found malware configuration 2->109 111 Malicious sample detected (through community Yara rule) 2->111 113 15 other signatures 2->113 10 kof.exe 1 6 2->10         started        14 wininit.exe 2->14         started        17 wininit.exe 2->17         started        19 2 other processes 2->19 signatures3 process4 dnsIp5 85 C:\Users\user\AppData\Local\...\svchost.exe, PE32 10->85 dropped 87 C:\Users\user\...\svchost.exe:Zone.Identifier, ASCII 10->87 dropped 89 C:\Users\user\AppData\Local\...\kof.exe.log, ASCII 10->89 dropped 125 Drops PE files with benign system names 10->125 21 svchost.exe 1 19 10->21         started        26 conhost.exe 10->26         started        97 ip-api.com 208.95.112.1, 49721, 49734, 49737 TUT-ASUS United States 14->97 127 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 14->127 28 WerFault.exe 14->28         started        129 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 17->129 30 WerFault.exe 19->30         started        file6 signatures7 process8 dnsIp9 95 mhzlhhhh378-43006.portmap.host 193.161.193.99, 43006, 49719, 49733 BITREE-ASRU Russian Federation 21->95 77 C:\Users\user\AppData\...\tmpD3D.tmp.exe, PE32 21->77 dropped 79 C:\Users\user\AppData\...\tmpCF07.tmp.exe, PE32 21->79 dropped 81 C:\Users\user\AppData\...\tmpCED4.tmp.exe, PE32 21->81 dropped 83 5 other malicious files 21->83 dropped 115 Antivirus detection for dropped file 21->115 117 System process connects to network (likely due to code injection or exploit) 21->117 119 Multi AV Scanner detection for dropped file 21->119 121 2 other signatures 21->121 32 tmp8A8D.tmp.exe 5 21->32         started        36 tmpBA6.tmp.exe 21->36         started        38 tmp8FBE.tmp.exe 1 21->38         started        40 8 other processes 21->40 file10 signatures11 process12 file13 75 C:\Users\user\AppData\Roaming\wininit.exe, PE32 32->75 dropped 99 Antivirus detection for dropped file 32->99 101 Bypasses PowerShell execution policy 32->101 103 Adds a directory exclusion to Windows Defender 32->103 105 Drops PE files with benign system names 32->105 42 powershell.exe 32->42         started        45 powershell.exe 23 32->45         started        47 cmd.exe 32->47         started        49 powershell.exe 36->49         started        51 powershell.exe 36->51         started        53 cmd.exe 36->53         started        55 wininit.exe 38->55         started        57 conhost.exe 40->57         started        59 conhost.exe 40->59         started        signatures14 process15 signatures16 123 Loading BitLocker PowerShell Module 42->123 61 conhost.exe 42->61         started        63 conhost.exe 47->63         started        65 timeout.exe 47->65         started        67 conhost.exe 49->67         started        69 conhost.exe 51->69         started        71 conhost.exe 53->71         started        73 WerFault.exe 55->73         started        process17
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/e71d93f19a3e41004e671b5e107177d6fd0f9a83b6b4791ce4b1853bd6620da3
Verdict:
njRat
YARA:
14 match(es)
Tags:
.Net Executable Managed .NET njRat PE (Portable Executable) PE File Layout RAT SOS: 0.25 Win 32 Exe x86
Malware Config
C2 Extraction:
CNC: mhzlhhhh378-43006.portmap.host
PORT: 43006
Link:
https://app.malva.re/file/4d02f58b443e52a399c6513345738069
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e71d93f19a3e41004e671b5e107177d6fd0f9a83b6b4791ce4b1853bd6620da3/
Verdict:
Malicious
Threat:
Family.NJRAT
Link:
https://tip.neiki.dev/file/e71d93f19a3e41004e671b5e107177d6fd0f9a83b6b4791ce4b1853bd6620da3
Threat name:
ByteCode-MSIL.Backdoor.njRAT
Create hunting rule
Status:
Malicious
First seen:
2025-09-13 21:39:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
24 of 24 (100.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=44ozh4m2hzaqatthdnpba4lx236q7gudw22hshhewgctxvtcbwrq._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
error
njrat
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat botnet:hacked defense_evasion discovery persistence privilege_escalation
Link:
https://tria.ge/reports/250913-1s7xdagr7x/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Event Triggered Execution: Netsh Helper DLL
System Location Discovery: System Language Discovery
Checks computer location settings
Executes dropped EXE
Modifies Windows Firewall
Malware Config
C2 Extraction:
mhzlhhhh378-43006.portmap.host:43006
Verdict:
Malicious
Tags:
rat njrat Win.Packed.Bladabindi-7994427-0 Bladabindi
YARA:
ByteCode_MSIL_Backdoor_NjRAT MALWARE_Win_NjRAT Windows_Trojan_Njrat_30f3c220
Link:
https://app.threat.zone/submission/3adc442c-6d55-4874-a186-90b3512d82f5
Unpacked files
SH256 hash:
e71d93f19a3e41004e671b5e107177d6fd0f9a83b6b4791ce4b1853bd6620da3
MD5 hash:
4d02f58b443e52a399c6513345738069
SHA1 hash:
797ce8441550097a804783dfd0998e1708f66d30
Detections:
win_njrat_g1
Create hunting rule
win_njrat_w1
Create hunting rule
NjRat
Create hunting rule
Link:
https://www.unpac.me/results/f9d353f1-91c0-401a-8531-b989df727b07/
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/e71d93f19a3e41004e671b5e107177d6fd0f9a83b6b4791ce4b1853bd6620da3

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:ByteCode_MSIL_Backdoor_NjRAT
Create hunting rule
Author:ReversingLabs
Description:Yara rule that detects NjRAT backdoor.
Rule name:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:MALWARE_Win_NjRAT
Create hunting rule
Author:ditekSHen
Description:Detects NjRAT / Bladabindi / NjRAT Golden
Rule name:Mal_WIN_NjRAT_RAT_PE
Create hunting rule
Author:Phatcharadol Thangplub
Description:Use to detect NjRAT implant.
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:Njrat
Create hunting rule
Author:botherder https://github.com/botherder
Description:Njrat
Rule name:njrat_
Create hunting rule
Author:Michelle Khalil
Description:This rule detects unpacked njrat malware samples.
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:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:win32_dotnet_loader
Create hunting rule
Author:Reedus0
Description:Rule for detecting .NET loader malware
Rule name:win32_njrat
Create hunting rule
Author:Reedus0
Description:Rule for detecting njRAT malware
Rule name:Windows_Trojan_Njrat_30f3c220
Create hunting rule
Rule name:Windows_Trojan_Njrat_30f3c220
Create hunting rule
Author:Elastic Security
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/27369/

Comments