MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 313955f5b54228bff9e34d2c4302aae5bdb1a89d494ccb57bf94e808788e577c. 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 YARA 25 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 313955f5b54228bff9e34d2c4302aae5bdb1a89d494ccb57bf94e808788e577c
SHA3-384 hash: 0eeadc720d1f6a9a9a4f002be1593c16d152b2bed7714b7d1d327c582c3c62aed4006f1f840b08f6a6055d6fa2e7fb36
SHA1 hash: 919c14bcfece57a792ee053fd9f2a9967b13d98a
MD5 hash: f75d31f867ac16b922fbae9794a07c44
humanhash: six-lake-nuts-black
File name:Pulsar-Client.exe
Download: download sample
Signature njrat
Create hunting rule
File size:974'848 bytes
First seen:2025-11-23 14:43:25 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 24576:0F/p7xJzck+uGW/yFoBkkAQHZjhE6J19oZwA:0F/p7TYjqqanT9b9oZw
TLSH T1EB25C09173F4850BE1FF5B75A4B248494BB7B9529A36DB4F0C88A0AD1EB3780CE10797
TrID 62.2% (.RLL) Microsoft Resource Library (x86) (177572/6/26)
25.6% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
3.6% (.EXE) Win64 Executable (generic) (10522/11/4)
2.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
1.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika pebin
Reporter burger
Tags:exe NjRAT QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
77
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Pulsar-Client.exe
Verdict:
Malicious activity
Analysis date:
2025-11-23 14:43:25 UTC
Tags:
pulsar rat crypto-regex
Link:
https://app.any.run/tasks/de868c31-aa81-4ae2-8ce9-c12e61453444

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/41135/
Gathering data
Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Sending a custom TCP request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug anti-vm anti-vm base64 cmd cscript evasive explorer fingerprint hacktool lolbin msbuild mshta obfuscated packed privilege quasarrat reconnaissance regasm regsvcs rundll32 runonce schtasks stack_pickle update
Link:
https://www.filescan.io/uploads/69231dc0eecb08e4aa45d926/reports/4192470e-e442-4f98-9f4c-8f2954347432/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/313955f5b54228bff9e34d2c4302aae5bdb1a89d494ccb57bf94e808788e577c
Result
Gathering data
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-23T11:47:00Z UTC
Last seen:
2025-11-23T11:47:00Z UTC
Hits:
~10
Detections:
Trojan-PSW.MSIL.Agent.sb Trojan.MSIL.Agent.sb HEUR:Trojan-Banker.MSIL.ClipBanker.gen HEUR:Trojan.Win32.Generic Backdoor.MSIL.PulsarRAT.sb
Link:
https://opentip.kaspersky.com/313955f5b54228bff9e34d2c4302aae5bdb1a89d494ccb57bf94e808788e577c/results?tab=lookup
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1819537
Signature
.NET source code contains potential unpacker
Contains functionality to disable the Task Manager (.Net Source)
Found malware configuration
Found potential dummy code loops (likely to delay analysis)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Opens the same file many times (likely Sandbox evasion)
Sample uses string decryption to hide its real strings
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected AntiVM3
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/313955f5b54228bff9e34d2c4302aae5bdb1a89d494ccb57bf94e808788e577c
Verdict:
njRat
YARA:
16 match(es)
Tags:
.Net Executable Fody/Costura Packer Html Managed .NET njRat PDB Path PE (Portable Executable) PE File Layout RAT SOS: 0.14 SOS: 0.15 SOS: 0.17 SOS: 0.18 SOS: 0.23 SOS: 0.24 SOS: 0.25 SOS: 0.26 SOS: 0.61 Win 32 Exe x86
Link:
https://app.malva.re/file/f75d31f867ac16b922fbae9794a07c44
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/313955f5b54228bff9e34d2c4302aae5bdb1a89d494ccb57bf94e808788e577c/
Verdict:
Malicious
Threat:
Family.QUASAR
Link:
https://tip.neiki.dev/file/313955f5b54228bff9e34d2c4302aae5bdb1a89d494ccb57bf94e808788e577c
Gathering data
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ge4vl5nviiul76pdjuwegavk4w63dke5jfgmwv57stuaq6eok56a._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
error
njrat
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar spyware trojan
Link:
https://tria.ge/reports/251123-r39dhssmhn/
Behaviour
Suspicious behavior: AddClipboardFormatListener
Suspicious use of AdjustPrivilegeToken
Quasar RAT
Quasar family
Quasar payload
Unpacked files
SH256 hash:
313955f5b54228bff9e34d2c4302aae5bdb1a89d494ccb57bf94e808788e577c
MD5 hash:
f75d31f867ac16b922fbae9794a07c44
SHA1 hash:
919c14bcfece57a792ee053fd9f2a9967b13d98a
Detections:
QuasarRAT
Create hunting rule
Link:
https://www.unpac.me/results/afa24524-ccb1-4484-b64b-51f9b7fe22f9/
Please note that we are no longer able to provide a coverage score for Virus Total.

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:Check_Dlls
Create hunting rule
Rule name:Check_VBox_Guest_Additions
Create hunting rule
Rule name:Check_VmTools
Create hunting rule
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_EXE_Packed_Fody
Create hunting rule
Author:ditekSHen
Description:Detects executables manipulated with Fody
Rule name:Indicator_MiniDumpWriteDump
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects PE files and PowerShell scripts that use MiniDumpWriteDump either through direct imports or string references
Rule name:INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
Author:ditekSHen
Description:Detects Windows executables referencing non-Windows User-Agents
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
Author:ditekSHen
Description:Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion
Rule name:MAL_BackNet_Nov18_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects BackNet samples
Reference:https://github.com/valsov/BackNet
Rule name:MAL_BackNet_Nov18_1_RID2D6D
Create hunting rule
Author:Florian Roth
Description:Detects BackNet samples
Reference:https://github.com/valsov/BackNet
Rule name:Multifamily_RAT_Detection
Create hunting rule
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
Create hunting rule
Author:malware-lu
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:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

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/41135/

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