MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 38622c32cac325c68f2fbf7148255a9813e7caeb53e3b95ebea56a6da5cb22ba. 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


Nitol


Vendor detections: 11


Intelligence 11 IOCs YARA 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 38622c32cac325c68f2fbf7148255a9813e7caeb53e3b95ebea56a6da5cb22ba
SHA3-384 hash: 151435092e4452eafb91b2701add622e4e2c9ac798aa50bed13589dbbe8ded7d78e0612d102743ebc6059f927e080c90
SHA1 hash: f522fec1296c065cd4c3eaf52d1c4fbc26fd9f28
MD5 hash: f317c17035501aaad0abfaf9fba4c085
humanhash: pennsylvania-september-mango-vegan
File name:Whyet-4.9.exe
Download: download sample
Signature Nitol
Create hunting rule
File size:21'152'435 bytes
First seen:2024-12-29 15:01:48 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 357b59ff56f808887438b8bd8ad0eaa6 (12 x Nitol)
ssdeep 393216:OecgR96USu2VkX3mGZHoRJ3+j8yvn7lbt0lWL:kVHemGZMkT7lbt0YL
TLSH T18D27015576F840EAD0BEC139C9828A4BD2F278451B35CBCF40941AA91F377E24D2EF69
TrID 70.8% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
12.9% (.EXE) Win64 Executable (generic) (10522/11/4)
6.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
2.5% (.ICL) Windows Icons Library (generic) (2059/9)
2.4% (.EXE) OS/2 Executable (generic) (2029/13)
Magika pebin
File icon (PE):PE icon
dhash icon d4c4c4ccccc464b4 (1 x Nitol)
Reporter aachum
Tags:exe Nitol


Avatar
iamaachum
https://kuailets1111.com/ => https://kuaibevpn.com/letsVPN-4.9.zip

Intelligence

File Origin
# of uploads :
1
# of downloads :
409
Origin country :
ES ES
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Whyet-4.9.exe
Verdict:
Malicious activity
Analysis date:
2024-12-29 14:45:43 UTC
Tags:
loader lua themida
Link:
https://app.any.run/tasks/b9e7b504-0a06-49d8-bcf3-7b5dc21753f9

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
MiscreantPunch.SingleXOR.EXE.7.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.W32.Agent.FNS.tr.dldr.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=677160971bb06b8884794371
Tags:
shellcode dropper virus
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Сreating synchronization primitives
Searching for synchronization primitives
Creating a process from a recently created file
Creating a window
Creating a file
Creating a file in the Program Files subdirectories
Searching for the window
Launching a process
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Running batch commands
Enabling the 'hidden' option for recently created files
Blocking the User Account Control
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
explorer fingerprint fingerprint installer lolbin microsoft_visual_cc msiexec obfuscated overlay regsvr32 runonce
Link:
https://www.filescan.io/uploads/677169ed0dd45a148a410347/reports/925c83ee-b564-4af6-bc02-5019d4b4b242/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/38622c32cac325c68f2fbf7148255a9813e7caeb53e3b95ebea56a6da5cb22ba
Result
Threat name:
Nitol, Zegost
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1582017
Signature
AI detected suspicious sample
Antivirus detection for dropped file
Contains functionality to capture and log keystrokes
Contains functionality to modify Windows User Account Control (UAC) settings
Disable UAC(promptonsecuredesktop)
Disables UAC (registry)
Encrypted powershell cmdline option found
Found evasive API chain (may stop execution after checking mutex)
Found stalling execution ending in API Sleep call
Found suspicious powershell code related to unpacking or dynamic code loading
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
PE file contains section with special chars
Query firmware table information (likely to detect VMs)
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Execution from Suspicious Folder
Sigma detected: Parent in Public Folder Suspicious Process
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Suspicious Program Location with Network Connections
Suricata IDS alerts for network traffic
Suspicious powershell command line found
Tries to delay execution (extensive OutputDebugStringW loop)
Tries to detect sandboxes / dynamic malware analysis system (registry check)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Nitol
Yara detected Zegost
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1582017 Sample: Whyet-4.9.exe Startdate: 29/12/2024 Architecture: WINDOWS Score: 100 117 ooddoo.top 2->117 119 huazai168.com 2->119 125 Suricata IDS alerts for network traffic 2->125 127 Malicious sample detected (through community Yara rule) 2->127 129 Multi AV Scanner detection for dropped file 2->129 131 10 other signatures 2->131 11 Whyet-4.9.exe 4 2->11         started        14 iusb3mon.exe 2->14         started        17 svchost.exe 2->17         started        20 rundll32.exe 2->20         started        signatures3 process4 dnsIp5 111 C:\Users\user\AppData\Local\...\lua5.1.dll, PE32+ 11->111 dropped 113 C:\Users\user\AppData\Local\...\irsetup.exe, PE32+ 11->113 dropped 22 irsetup.exe 3 18 11->22         started        147 Antivirus detection for dropped file 14->147 149 Found evasive API chain (may stop execution after checking mutex) 14->149 151 Suspicious powershell command line found 14->151 153 8 other signatures 14->153 27 powershell.exe 14->27         started        29 cmd.exe 14->29         started        31 powershell.exe 14->31         started        33 22 other processes 14->33 115 127.0.0.1 unknown unknown 17->115 file6 signatures7 process8 dnsIp9 123 ooddoo.top 104.21.81.224, 443, 49713, 49736 CLOUDFLARENETUS United States 22->123 105 C:\Users\Public\Documents\...\LxN_oT.exe, PE32 22->105 dropped 107 C:\ProgramData\Microsoft\Program\ziliao.jpg, DOS 22->107 dropped 109 C:\Program Files\...\letsvpn-latest.exe, PE32 22->109 dropped 141 Suspicious powershell command line found 22->141 35 cmd.exe 22->35         started        37 powershell.exe 11 22->37         started        39 powershell.exe 11 22->39         started        45 30 other processes 22->45 41 conhost.exe 27->41         started        43 SecEdit.exe 27->43         started        47 3 other processes 29->47 49 2 other processes 31->49 51 37 other processes 33->51 file10 signatures11 process12 process13 53 LxN_oT.exe 35->53         started        58 conhost.exe 35->58         started        60 conhost.exe 37->60         started        62 conhost.exe 39->62         started        64 conhost.exe 41->64         started        66 conhost.exe 45->66         started        68 conhost.exe 45->68         started        70 conhost.exe 45->70         started        72 25 other processes 45->72 dnsIp14 121 huazai168.com 118.107.45.13, 25445, 49757, 49769 BCPL-SGBGPNETGlobalASNSG Singapore 53->121 101 C:\ProgramData\Program\iusb3mon.exe, PE32 53->101 dropped 103 C:\ProgramData\...\MicrosoftNetFramework.xml, XML 53->103 dropped 133 Antivirus detection for dropped file 53->133 135 Suspicious powershell command line found 53->135 137 Query firmware table information (likely to detect VMs) 53->137 139 6 other signatures 53->139 74 powershell.exe 53->74         started        77 cmd.exe 53->77         started        79 powershell.exe 53->79         started        81 3 other processes 53->81 file15 signatures16 process17 signatures18 143 Found suspicious powershell code related to unpacking or dynamic code loading 74->143 83 conhost.exe 74->83         started        85 SecEdit.exe 74->85         started        145 Uses schtasks.exe or at.exe to add and modify task schedules 77->145 87 conhost.exe 77->87         started        89 conhost.exe 79->89         started        91 SecEdit.exe 79->91         started        93 conhost.exe 81->93         started        95 conhost.exe 81->95         started        97 SecEdit.exe 81->97         started        99 3 other processes 81->99 process19
Score:
80%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/38622c32cac325c68f2fbf7148255a9813e7caeb53e3b95ebea56a6da5cb22ba
Gathering data
Threat name:
Win32.Backdoor.GhostRAT
Create hunting rule
Status:
Malicious
First seen:
2024-12-29 14:45:45 UTC
File Type:
PE+ (Exe)
Extracted files:
31
AV detection:
4 of 23 (17.39%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hbrcymwkyms4ndzpx5yuqjk2taj6psxlkpr3sxv6uvvg3jolek5a._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
bootkit defense_evasion discovery evasion execution persistence trojan
Link:
https://tria.ge/reports/241229-sefa7stpfx/
Behaviour
Modifies registry class
Scheduled Task/Job: Scheduled Task
Suspicious behavior: CmdExeWriteProcessMemorySpam
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System policy modification
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Adds Run key to start application
Checks whether UAC is enabled
Command and Scripting Interpreter: PowerShell
Indicator Removal: File Deletion
Writes to the Master Boot Record (MBR)
Checks BIOS information in registry
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Downloads MZ/PE file
Identifies VirtualBox via ACPI registry values (likely anti-VM)
UAC bypass
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/7b385a4f-cfaf-4143-af38-72ec9a779ceb
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/38622c32cac325c68f2fbf7148255a9813e7caeb53e3b95ebea56a6da5cb22ba

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:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:RansomPyShield_Antiransomware
Create hunting rule
Author:XiAnzheng
Description:Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP)
Rule name:SUSP_XORed_MSDOS_Stub_Message
Create hunting rule
Author:Florian Roth
Description:Detects suspicious XORed MSDOS stub message
Reference:https://yara.readthedocs.io/en/latest/writingrules.html#xor-strings
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

Web download

Nitol

Executable exe 38622c32cac325c68f2fbf7148255a9813e7caeb53e3b95ebea56a6da5cb22ba

(this sample)

Executable exe 41081dffddc71f521d8d71c91c24aa9d953a103e969680403e01a2d0d5ba1a6c

  
Link
https://tria.ge/241229-r28qlatngt/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 41081dffddc71f521d8d71c91c24aa9d953a103e969680403e01a2d0d5ba1a6c
  
Dropping
MD5 cbac90b380e579e0de0243ac2066d679

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
CHECK_TRUST_INFORequires Elevated Execution (level:requireAdministrator)high
Reviews
IDCapabilitiesEvidence
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::GetTokenInformation
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExA
WIN32_PROCESS_APICan Create Process and ThreadsADVAPI32.dll::OpenProcessToken
KERNEL32.dll::CloseHandle
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::GetStartupInfoW
KERNEL32.dll::GetDiskFreeSpaceA
KERNEL32.dll::GetCommandLineA
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateDirectoryA
KERNEL32.dll::DeleteFileA
KERNEL32.dll::MoveFileExA
KERNEL32.dll::GetFileAttributesA
KERNEL32.dll::RemoveDirectoryA
KERNEL32.dll::GetTempPathA
WIN_USER_APIPerforms GUI ActionsUSER32.dll::PeekMessageA

Comments