MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 31cd1e172d0375c8cd5e58929b7d235d389bbfeb5387488083c5b86c943d0b65. 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: 18


Intelligence 18 IOCs 1 YARA 13 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 31cd1e172d0375c8cd5e58929b7d235d389bbfeb5387488083c5b86c943d0b65
SHA3-384 hash: 4c1f3d0da77533757df2d8f4115bd3b81a1781bf776c086e2a6acbb9d1b163dab28c1c2ed2b3809736665f678081f48c
SHA1 hash: b6c1f037637936ae018cc5e3e17ab9f3cc8cb3ff
MD5 hash: 5c8eb40a1344bd8b18c1ef0d95d433d4
humanhash: iowa-september-venus-golf
File name:5c8eb40a1344bd8b18c1ef0d95d433d4.exe
Download: download sample
Signature njrat
Create hunting rule
File size:37'888 bytes
First seen:2024-08-16 14:00:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'855 x AgentTesla, 19'783 x Formbook, 12'304 x SnakeKeylogger)
ssdeep 384:z0ACT0i9PdTe/kCOyU7fwv9YDn6a5rAF+rMRTyN/0L+EcoinblneHQM3epzXONrz:YlV1CFU7fwyj6GrM+rMRa8Nuk/rt
TLSH T15D032A4D7FE18168C4FD057B06B2D01207BBE04B6E23D90EDEE5A49A37636C58B54AF2
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
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)
Reporter abuse_ch
Tags:exe NjRAT RAT


Avatar
abuse_ch
njrat C2:
147.185.221.20:47570

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
147.185.221.20:47570 https://threatfox.abuse.ch/ioc/1312103/

Intelligence

File Origin
# of uploads :
1
# of downloads :
512
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
njrat
Create hunting rule
ID:
1
File name:
5c8eb40a1344bd8b18c1ef0d95d433d4.exe
Verdict:
Malicious activity
Analysis date:
2024-08-16 14:01:59 UTC
Tags:
rat njrat bladabindi remote
Link:
https://app.any.run/tasks/3b21fb7f-b8e1-4058-b84a-dcef7d75670d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
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=66bf5b9fb35234d5cc65f0a9
Tags:
Execution Network Spreading Stealth Msil
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
backdoor bladabindi cmd explorer fingerprint keylogger lolbin netsh njrat rat stealer vbnet
Link:
https://www.filescan.io/uploads/66bf5bafb70f08db50c718ea/reports/fe403184-818f-4ca1-9e21-4ea87281f83f/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/31cd1e172d0375c8cd5e58929b7d235d389bbfeb5387488083c5b86c943d0b65
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/cc05ecb7-3402-45e0-9c7e-31662de202cc
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
spre.troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1493888
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
AI detected suspicious sample
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
Drops PE files to the startup folder
Drops PE files with benign system names
Found malware configuration
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 domain / URL
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
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: New RUN Key Pointing to Suspicious Folder
Suricata IDS alerts for network traffic
Uses netsh to modify the Windows network and firewall settings
Uses ping.exe to check the status of other devices and networks
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1493888 Sample: iZ5oERbgGB.exe Startdate: 16/08/2024 Architecture: WINDOWS Score: 100 57 Multi AV Scanner detection for domain / URL 2->57 59 Suricata IDS alerts for network traffic 2->59 61 Found malware configuration 2->61 63 16 other signatures 2->63 8 iZ5oERbgGB.exe 1 6 2->8         started        11 server.exe 2 2->11         started        13 server.exe 2 2->13         started        15 server.exe 3 2->15         started        process3 file4 49 C:\Users\user\AppData\Local\Temp\server.exe, PE32 8->49 dropped 51 C:\Users\user\...\server.exe:Zone.Identifier, ASCII 8->51 dropped 53 C:\Users\user\AppData\...\iZ5oERbgGB.exe.log, ASCII 8->53 dropped 17 server.exe 2 11 8->17         started        process5 dnsIp6 55 147.185.221.20, 47570, 49705 SALSGIVERUS United States 17->55 41 C:\svchost.exe, PE32 17->41 dropped 43 C:\...\20006afb0ec33f2e48c8c1f17d4d3382.exe, PE32 17->43 dropped 45 C:\svchost.exe:Zone.Identifier, ASCII 17->45 dropped 47 2 other malicious files 17->47 dropped 65 Antivirus detection for dropped file 17->65 67 Multi AV Scanner detection for dropped file 17->67 69 Protects its processes via BreakOnTermination flag 17->69 71 7 other signatures 17->71 22 cmd.exe 1 17->22         started        25 netsh.exe 2 17->25         started        27 netsh.exe 2 17->27         started        29 taskkill.exe 1 17->29         started        file7 signatures8 process9 signatures10 73 Uses ping.exe to check the status of other devices and networks 22->73 31 conhost.exe 22->31         started        33 PING.EXE 1 22->33         started        35 conhost.exe 25->35         started        37 conhost.exe 27->37         started        39 conhost.exe 29->39         started        process11
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/31cd1e172d0375c8cd5e58929b7d235d389bbfeb5387488083c5b86c943d0b65
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/31cd1e172d0375c8cd5e58929b7d235d389bbfeb5387488083c5b86c943d0b65/
Threat name:
ByteCode-MSIL.Backdoor.njRAT
Create hunting rule
Status:
Malicious
First seen:
2024-08-11 21:26:13 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
36 of 38 (94.74%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ghgr4fznan24rtk6lcjjw7jdlu4jxp7lkoduraedyw4gzfb5bnsq._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat botnet:puked discovery evasion persistence privilege_escalation trojan
Link:
https://tria.ge/reports/240816-rbjc1sscpl/
Behaviour
Kills process with taskkill
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Event Triggered Execution: Netsh Helper DLL
System Location Discovery: System Language Discovery
System Network Configuration Discovery: Internet Connection Discovery
Drops autorun.inf file
Adds Run key to start application
Checks computer location settings
Drops startup file
Executes dropped EXE
Loads dropped DLL
Modifies Windows Firewall
njRAT/Bladabindi
Malware Config
C2 Extraction:
147.185.221.20:47570
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/904b8e49-3254-46e0-8f8f-61f1a4792647
Unpacked files
SH256 hash:
31cd1e172d0375c8cd5e58929b7d235d389bbfeb5387488083c5b86c943d0b65
MD5 hash:
5c8eb40a1344bd8b18c1ef0d95d433d4
SHA1 hash:
b6c1f037637936ae018cc5e3e17ab9f3cc8cb3ff
Detections:
NjRat
Create hunting rule
win_njrat_w1
Create hunting rule
win_njrat_g1
Create hunting rule
Link:
https://www.unpac.me/results/750e2e00-e638-49d0-890e-e1831c97b305/
Malware family:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/31cd1e172d03/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/31cd1e172d0375c8cd5e58929b7d235d389bbfeb5387488083c5b86c943d0b65

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: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: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: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.

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments