MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e34fed678302c144ab655ebfb54a2493551266bfdf66fd35c7e85c3c6000b592. 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


QuasarRAT


Vendor detections: 10


Intelligence 10 IOCs YARA 27 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e34fed678302c144ab655ebfb54a2493551266bfdf66fd35c7e85c3c6000b592
SHA3-384 hash: ec622ca0146cce322608daf4375a0c8ea99ddcb144449c292d314ca49b83893bce80ecc4ca82d214f24b1fc979442b91
SHA1 hash: 7a60d6106d38f1fad07ff6b07d415b640924e471
MD5 hash: 4661260d44bb7e9a0c03f8fc5db39343
humanhash: carpet-island-violet-arizona
File name:LetsVPN.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:37'973'584 bytes
First seen:2026-04-11 18:13:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 4e09edf4d2c143776135d0d82a980620 (4 x QuasarRAT)
ssdeep 786432:cXZfq29+3x9a0QZNtU8Eerb93m87ZhsnfPd+4r9O+WuQPJ+Hjup8iuZwHIbZ:Il9oLDQZNtpZrb922ZhsfPdNrYzJRbw
TLSH T1CD87333AF7868899C6D7C3B8A746DFA298747D040131B5AB02DB89333F5686407DD7CA
TrID 33.1% (.EXE) Win64 Executable (generic) (6522/11/2)
25.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
10.4% (.ICL) Windows Icons Library (generic) (2059/9)
10.3% (.EXE) OS/2 Executable (generic) (2029/13)
10.1% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
Reporter Ling
Tags:exe Family.PLUSDROP Plusdrop QuasarRAT SilverFox


Avatar
CNGaoLing
SilverFox IOC (IP 156.245.234.13)

Intelligence

File Origin
# of uploads :
1
# of downloads :
143
Origin country :
US US
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
LetsVPN.exe
Verdict:
Malicious activity
Analysis date:
2026-04-11 15:22:23 UTC
Tags:
evasion
Link:
https://app.any.run/tasks/f9cda015-224c-4b50-87bb-b0c5021b9d61

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69da67186a61012f6ad0ee42
Tags:
nanocore emotet cobalt
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the Program Files subdirectories
DNS request
Connection attempt
Creating a process from a recently created file
Creating a process with a hidden window
Moving a file to the Program Files subdirectory
Creating a file in the Windows directory
Creating a file in the %temp% subdirectories
Creating a window
Сreating synchronization primitives
Creating a file
Searching for synchronization primitives
Launching a process
Using the Windows Management Instrumentation requests
Sending an HTTP GET request
Enabling autorun by creating a file
Unauthorized injection to a system process
Gathering data
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/e34fed678302c144ab655ebfb54a2493551266bfdf66fd35c7e85c3c6000b592
Verdict:
Malicious
File Type:
exe x64
First seen:
2026-04-11T09:16:00Z UTC
Last seen:
2026-04-13T09:21:00Z UTC
Hits:
~10
Detections:
PDM:Trojan.Win32.Generic Trojan.Win32.Injuke.pnrv
Link:
https://opentip.kaspersky.com/e34fed678302c144ab655ebfb54a2493551266bfdf66fd35c7e85c3c6000b592/results?tab=lookup
Score:
78%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/e34fed678302c144ab655ebfb54a2493551266bfdf66fd35c7e85c3c6000b592
Gathering data
Verdict:
Malicious
Threat:
Family.PLUSDROP
Link:
https://tip.neiki.dev/file/e34fed678302c144ab655ebfb54a2493551266bfdf66fd35c7e85c3c6000b592
Threat name:
Win64.Trojan.Malgent
Create hunting rule
Status:
Malicious
First seen:
2026-04-11 15:22:06 UTC
File Type:
PE+ (Exe)
Extracted files:
1
AV detection:
13 of 24 (54.17%)
Threat level:
  5/5
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:plusdrop family:quasar actor:apt41 apt backdoor defense_evasion discovery execution persistence privilege_escalation spyware trojan
Link:
https://tria.ge/reports/260411-wt1r8sht7y/
Behaviour
Checks SCSI registry key(s)
Gathers network information
Modifies data under HKEY_USERS
Modifies registry class
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: LoadsDriver
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Command and Scripting Interpreter: PowerShell
Enumerates physical storage devices
Event Triggered Execution: Netsh Helper DLL
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks installed software on the system
Network Service Discovery
Executes dropped EXE
Loads dropped DLL
Unexpected DNS network traffic destination
Drops file in Drivers directory
Modifies Windows Firewall
Detects Plusdrop Payload
Plusdrop family
Plusdrop, toughprogress
Quasar RAT
Quasar family
Quasar payload
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/e34fed678302/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.26
Link:
https://yomi.yoroi.company/submissions/e34fed678302c144ab655ebfb54a2493551266bfdf66fd35c7e85c3c6000b592

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_OutputDebugStringA_iat
Create hunting rule
Rule name:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
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:DebuggerException__SetConsoleCtrl
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
Create hunting rule
Author:daniyyell
Description:Detects suspicious PowerShell activity related to malware execution
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:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:GhostWeaver_Persistence_Installer
Create hunting rule
Author:derp.ca
Description:GhostWeaver/Pantera persistence installer delivered via C2 iex command
Reference:https://www.derp.ca/blog/ghostweaver-tag124-powershell-rat
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:malware_shellcode_hash
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect shellcode api hash value
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:suspicious_PEs
Create hunting rule
Author:txc
Description:This rule detected suspicious PE files, based on high entropy and low amount of imported DLLs. This behaviour indicates packed files or files, that hide their true intention.
Rule name:SUSP_PDB_Path_Keywords
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects suspicious PDB paths
Reference:https://twitter.com/stvemillertime/status/1179832666285326337?s=20
Rule name:SUSP_PDB_Path_Keywords_RID2F34
Create hunting rule
Author:Florian Roth
Description:Detects suspicious PDB paths
Reference:https://twitter.com/stvemillertime/status/1179832666285326337?s=20
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
Rule name:TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE
Create hunting rule
Author:CYFARE
Description:Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments
Reference:https://cyfare.net/
Rule name:VECT_Ransomware
Create hunting rule
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

QuasarRAT

Executable exe e34fed678302c144ab655ebfb54a2493551266bfdf66fd35c7e85c3c6000b592

(this sample)

  
Delivery method
Distributed via web download

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