MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3df1c2d8cb6357dec23ffe7083d6058c300419519ee7b34efcfba3a0384ea08b. 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: 19


Intelligence 19 IOCs YARA 24 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3df1c2d8cb6357dec23ffe7083d6058c300419519ee7b34efcfba3a0384ea08b
SHA3-384 hash: 44c373d679fc6ef5a407d9442f2b5e6bc0184a97b17217e0d9d3c59f3c01d22e1025b1b18e644b7e2ec31f9e89c12b09
SHA1 hash: cd283b7e3353a18216743c692e2c1c7f2e6e55d3
MD5 hash: 3d6a54bb349515cb28425d0fd0de2dea
humanhash: winter-pip-wisconsin-happy
File name:Pulsar-Client.exe
Download: download sample
Signature njrat
Create hunting rule
File size:975'360 bytes
First seen:2025-11-15 21:40:37 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'662 x AgentTesla, 19'476 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:kF/pGBxJzck+uGW/yFoBkkAQq7GCQ/MmD1E:kF/pyTYjqqanTuZmD1
Threatray 109 similar samples on MalwareBazaar
TLSH T17425CF9077F4850AE1FF1BB9E4B148494BB7B8129A36DB4F09D4A0AD1EB3740CE513A7
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 PulsarRAT QuasarRAT RAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
164
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Pulsar-Client.exe
Verdict:
Malicious activity
Analysis date:
2025-11-15 21:38:58 UTC
Tags:
uac pastebin evasion pulsar rat crypto-regex
Link:
https://app.any.run/tasks/8eef785a-db22-43fa-819d-7c63decc8abd

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/38319/
Detection(s):
Win.Malware.Generic-9883083-0
Create hunting rule

Win.Malware.Bulz-9933026-0
Create hunting rule

Win.Malware.Generic-6623004-0
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6918f34abdb0ec3a9dc213f8
Tags:
vmdetect autorun emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Launching a process
DNS request
Connection attempt
Enabling autorun by creating a file
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/6918f381d0a6890408b64d4d/reports/57751204-8d47-4275-a261-055853448746/overview
Verdict:
Malicious
Labled as:
HackTool[VirTool]/MSIL.Aikaantivm
Link:
https://www.hybrid-analysis.com/sample/3df1c2d8cb6357dec23ffe7083d6058c300419519ee7b34efcfba3a0384ea08b
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-15T18:41:00Z UTC
Last seen:
2025-11-15T20:49:00Z UTC
Hits:
~10
Detections:
Trojan.MSIL.Quasar.a Trojan.MSIL.Agent.sb HEUR:Trojan-Banker.MSIL.ClipBanker.gen HEUR:Trojan.Win32.Generic Trojan-PSW.MSIL.Agent.sb PDM:Trojan.Win32.Tasker.cust Backdoor.SharPi.HTTP.C&C
Link:
https://opentip.kaspersky.com/3df1c2d8cb6357dec23ffe7083d6058c300419519ee7b34efcfba3a0384ea08b/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/67b7666d-ec4d-40d1-8afb-72767747875f
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
rans.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1814785
Signature
.NET source code contains potential unpacker
Connects to a pastebin service (likely for C&C)
Contains functionality to disable the Task Manager (.Net Source)
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 dropped file
Multi AV Scanner detection for submitted file
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Query firmware table information (likely to detect VMs)
Sample uses string decryption to hide its real strings
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Uses shutdown.exe to shutdown or reboot the system
Yara detected AntiVM3
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1814785 Sample: Pulsar-Client.exe Startdate: 15/11/2025 Architecture: WINDOWS Score: 100 46 pastebin.com 2->46 48 ipwho.is 2->48 64 Malicious sample detected (through community Yara rule) 2->64 66 Multi AV Scanner detection for submitted file 2->66 68 Yara detected AntiVM3 2->68 72 6 other signatures 2->72 9 Pulsar-Client.exe 6 2->9         started        13 Synapse.exe 3 2->13         started        signatures3 70 Connects to a pastebin service (likely for C&C) 46->70 process4 file5 42 C:\Users\user\AppData\Roaming\Synapse.exe, PE32 9->42 dropped 44 C:\Users\user\...\Pulsar-Client.exe.log, CSV 9->44 dropped 74 Uses schtasks.exe or at.exe to add and modify task schedules 9->74 76 Hides that the sample has been downloaded from the Internet (zone.identifier) 9->76 15 Synapse.exe 15 27 9->15         started        20 schtasks.exe 1 9->20         started        signatures6 process7 dnsIp8 50 147.185.221.22, 22353, 49717, 49724 SALSGIVERUS United States 15->50 52 ipwho.is 15.204.213.5, 443, 49718 HP-INTERNET-ASUS United States 15->52 54 pastebin.com 104.20.29.150, 443, 49714 CLOUDFLARENETUS United States 15->54 34 C:\Users\user\AppData\Roaming\...\SharpDX.dll, PE32 15->34 dropped 36 C:\Users\user\...\SharpDX.Mathematics.dll, PE32 15->36 dropped 38 C:\Users\user\...\SharpDX.Direct3D11.dll, PE32 15->38 dropped 40 11 other malicious files 15->40 dropped 56 Multi AV Scanner detection for dropped file 15->56 58 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 15->58 60 Query firmware table information (likely to detect VMs) 15->60 62 2 other signatures 15->62 22 schtasks.exe 1 15->22         started        24 shutdown.exe 1 15->24         started        26 WerFault.exe 19 16 15->26         started        28 conhost.exe 20->28         started        file9 signatures10 process11 process12 30 conhost.exe 22->30         started        32 conhost.exe 24->32         started       
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3df1c2d8cb6357dec23ffe7083d6058c300419519ee7b34efcfba3a0384ea08b
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/3d6a54bb349515cb28425d0fd0de2dea
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3df1c2d8cb6357dec23ffe7083d6058c300419519ee7b34efcfba3a0384ea08b/
Verdict:
Malicious
Threat:
Family.QUASAR
Link:
https://tip.neiki.dev/file/3df1c2d8cb6357dec23ffe7083d6058c300419519ee7b34efcfba3a0384ea08b
Threat name:
ByteCode-MSIL.Hacktool.Aikaantivm
Create hunting rule
Status:
Malicious
First seen:
2025-11-15 21:40:28 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
21 of 24 (87.50%)
Threat level:
  1/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hxy4fwglmnl55qr77zyihvqfrqyaigkrt3t3gtx47or2aocoucfq._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
0455ebce0a62e2413a730a8e172cde5e6171d2a3569c4620c7e10a6ff04a3710
njrat
2b782927fc933eae5dcc58fe16cd941d2c29bf9dd3f89f0d69af73404abaef70
njrat
3df1c2d8cb6357dec23ffe7083d6058c300419519ee7b34efcfba3a0384ea08b
njrat
5796230cdd9dac9064551b7e0aeecd62ff2c25808dfe854e774c54815f66c741
njrat
9dfb214ab255d443607901cff10b94d1c4a5da6605968c254875d423b8ab8b71
njrat
error
njrat
f77dc79317aaa60814d8bee4b73d45ad86c069e939078c43d0dc8da65f97be8b
njrat
+ 99 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar execution persistence spyware trojan
Link:
https://tria.ge/reports/251115-1jxeaadm8v/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Legitimate hosting services abused for malware hosting/C2
Executes dropped EXE
Quasar RAT
Quasar family
Quasar payload
Verdict:
Malicious
Tags:
red_team_tool rat quasar_rat backdoor backnet Win.Malware.Generic-9883083-0
YARA:
HKTL_EXE_AlKhaser_Jul_01 malware_windows_quasarrat MAL_BackNet_Nov18_1
Link:
https://app.threat.zone/submission/90f3d94f-3643-442b-88e4-1b87689c4b51
Unpacked files
SH256 hash:
3df1c2d8cb6357dec23ffe7083d6058c300419519ee7b34efcfba3a0384ea08b
MD5 hash:
3d6a54bb349515cb28425d0fd0de2dea
SHA1 hash:
cd283b7e3353a18216743c692e2c1c7f2e6e55d3
Detections:
QuasarRAT
Create hunting rule
Link:
https://www.unpac.me/results/1a4c5a37-c2d1-4870-8f4e-7f60372358d9/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3df1c2d8cb63/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.77
Link:
https://yomi.yoroi.company/submissions/3df1c2d8cb6357dec23ffe7083d6058c300419519ee7b34efcfba3a0384ea08b

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: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/38319/

Comments