MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6a65ffab90209b9a5fad0523b2878228f7062afc4679742d1efa0e77f419a8d8. 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: 16


Intelligence 16 IOCs YARA 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6a65ffab90209b9a5fad0523b2878228f7062afc4679742d1efa0e77f419a8d8
SHA3-384 hash: ff4aa5d1544fa87fc8856eed3f9c43db19c3b612564bcae5f4b5f75ad72440d7f63803040cd8d99ce8431b8459d43118
SHA1 hash: 9a85fa621679d1629b15f6ed2953f4d7665f5091
MD5 hash: b52996195bd6af110e82523da49f7bd9
humanhash: vegan-football-failed-ack
File name:Server.exe
Download: download sample
Signature njrat
Create hunting rule
File size:37'888 bytes
First seen:2023-10-05 12:57:14 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 384:63OqIiuhjtD+P3V+y0bLqXOtHBEs++LhrAF+rMRTyN/0L+EcoinblneHQM3epzXO:TpmV10bLqXOtyN+9rM+rMRa8NuWpht
Threatray 1'344 similar samples on MalwareBazaar
TLSH T1CF033B4D7FE18168C5FD167B05B2D41207BAE04B6E23DA1E8EF164AA37636C18F50AF1
TrID 60.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.8% (.SCR) Windows screen saver (13097/50/3)
8.7% (.EXE) Win64 Executable (generic) (10523/12/4)
5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter JoulK
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
348
Origin country :
GB GB
Vendor Threat Intelligence
Malware family:
njrat
Create hunting rule
ID:
1
File name:
Desktop.rar
Verdict:
Malicious activity
Analysis date:
2023-09-29 17:30:10 UTC
Tags:
rat njrat bladabindi remote
Link:
https://app.any.run/tasks/b6f64e6c-37ad-4b32-abc2-be984a1ded30

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.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 %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 files in the %temp% directory
Enabling the 'hidden' option for recently created files
Creating a window
Searching for synchronization primitives
DNS request
Unauthorized injection to a recently created process
Launching the process to change the firewall settings
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
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 explorer fingerprint greyware keylogger lolbin netsh njrat packed rat replace stealer
Link:
https://www.filescan.io/uploads/651eb2dc9b16696e9f9232de/reports/7198f3c3-4b2c-46da-87e9-83e4f62ae156/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/6a65ffab90209b9a5fad0523b2878228f7062afc4679742d1efa0e77f419a8d8
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/97dd567e-2e49-40ab-bbb2-06fb9600b10d
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
spre.troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1320284
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
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Changes security center settings (notifications, updates, antivirus, firewall)
Connects to many ports of the same IP (likely port scanning)
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 dropped file
Multi AV Scanner detection for submitted file
Protects its processes via BreakOnTermination flag
Query firmware table information (likely to detect VMs)
Sigma detected: Drops fake system file at system root drive
System process connects to network (likely due to code injection or exploit)
Uses netsh to modify the Windows network and firewall settings
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1320284 Sample: Server.exe Startdate: 05/10/2023 Architecture: WINDOWS Score: 100 40 topics-junior.at.ply.gg 2->40 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 Antivirus detection for URL or domain 2->48 50 13 other signatures 2->50 9 Server.exe 1 6 2->9         started        13 svchost.exe 2->13         started        15 svchost.exe 1 2->15         started        17 7 other processes 2->17 signatures3 process4 file5 38 C:\Users\user\AppData\Local\...\svchost.exe, PE32 9->38 dropped 60 Drops PE files with benign system names 9->60 19 svchost.exe 2 11 9->19         started        62 Changes security center settings (notifications, updates, antivirus, firewall) 13->62 24 MpCmdRun.exe 1 13->24         started        64 Query firmware table information (likely to detect VMs) 15->64 signatures6 process7 dnsIp8 42 topics-junior.at.ply.gg 209.25.140.223, 45283 COGECO-PEER1CA Canada 19->42 32 C:\svchost.exe, PE32 19->32 dropped 34 C:\...\87fbb7d05011dd3c6b564f136007bf19.exe, PE32 19->34 dropped 36 C:\autorun.inf, Microsoft 19->36 dropped 52 Antivirus detection for dropped file 19->52 54 System process connects to network (likely due to code injection or exploit) 19->54 56 Multi AV Scanner detection for dropped file 19->56 58 8 other signatures 19->58 26 netsh.exe 2 19->26         started        28 conhost.exe 24->28         started        file9 signatures10 process11 process12 30 conhost.exe 26->30         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6a65ffab90209b9a5fad0523b2878228f7062afc4679742d1efa0e77f419a8d8/
Threat name:
ByteCode-MSIL.Backdoor.Ratenjay
Create hunting rule
Status:
Malicious
First seen:
2023-09-28 23:45:59 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
35 of 38 (92.11%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=njs77k4qecnzux5naur3fb4cfd3qmkx4iz4xili67ihhp5azvdma._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
03c797996da1b603758c6875b0dc86c8c1cf2f4f1939d25aa3874cb0fe2bf08a
njrat
0e29156381dd95e3a986aa7aec1ce6738a9e4cf588427a481968a6ab681d2714
njrat
3afb59529ffa4513006bc0439666f31bfff54d2d3de260f0f5280e1ac8cc2190
njrat
4af8f255dd229833ca59cf894ce9ad1e3b1685aa6d245356c04e71c2dd69ec60
njrat
6e1746734357f8b034d51554e64dfd50c8a2029b298266a226518823c6f47116
njrat
75eb37d974cfd6c04ecc2558bf088bcca733322f96e40be9e461eca640dfe7de
njrat
8f7070b244f6d3559a7e5d4bb8682ec5bca8aacd37104c827d1897c3f6cd0650
njrat
b2f0bc2708ed09126d4dcd9196b3c560622df056cd60475af82d8e998d5d45e6
njrat
d29c210fb38115e7dbab2db78822979b2227a2cdf9809be230bb1af40125b2e3
njrat
+ 1'334 additional samples on MalwareBazaar
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat botnet:scammer evasion persistence trojan
Link:
https://tria.ge/reports/231005-p7g4qabc3t/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
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:
topics-junior.at.ply.gg:45283
Unpacked files
SH256 hash:
6a65ffab90209b9a5fad0523b2878228f7062afc4679742d1efa0e77f419a8d8
MD5 hash:
b52996195bd6af110e82523da49f7bd9
SHA1 hash:
9a85fa621679d1629b15f6ed2953f4d7665f5091
Detections:
NjRat
Create hunting rule
win_njrat_w1
Create hunting rule
win_njrat_g1
Create hunting rule
Link:
https://www.unpac.me/results/9ce0608f-d40d-4fa7-8bff-ed2f2f66233d/
Malware family:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/6a65ffab9020/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
NJRat
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/6a65ffab90209b9a5fad0523b2878228f7062afc4679742d1efa0e77f419a8d8

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: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
Author:Elastic Security
Rule name:Windows_Trojan_Njrat_30f3c220
Create hunting rule
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.

Comments