MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c88e2057d44ad73fa1d07ff1af68345ffeb3e153801e85ee4d294d5676a58de5. 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: c88e2057d44ad73fa1d07ff1af68345ffeb3e153801e85ee4d294d5676a58de5
SHA3-384 hash: e0de4d92261afe6aaf952c7e5bd89265e7a78ab798c9f281c41e16324b99e6e680412d63b878c1590568b227e2b4a2a9
SHA1 hash: 0f42f37a6be6922f0f3ef7d751dedce6abce99bf
MD5 hash: a741fbd12088e596142d3717b48502cf
humanhash: five-georgia-artist-shade
File name:KL-3.1.16.exe
Download: download sample
Signature Nitol
Create hunting rule
File size:21'267'097 bytes
First seen:2024-12-29 15:05:07 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 357b59ff56f808887438b8bd8ad0eaa6 (12 x Nitol)
ssdeep 393216:cecugBlobQzoAb0m/oeLRIOoWdwUcdsKgbyyBkCfDrnya:LwRzoAb0NeNIl/kz/3
TLSH T1B727F15566E840E5D0BAC1358982CA2BD2F27C411B35C7CF40D17EAB3F376A24D2EB69
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 32f1f8d4e8e87000 (1 x Nitol)
Reporter aachum
Tags:exe Nitol


Avatar
iamaachum
https://letseppn.com/KL-3.1.16.zip

Intelligence

File Origin
# of uploads :
1
# of downloads :
420
Origin country :
ES ES
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
KL-3.1.16.exe
Verdict:
Malicious activity
Analysis date:
2024-12-29 15:05:19 UTC
Tags:
loader lua themida
Link:
https://app.any.run/tasks/af4a5226-1303-4d6d-bc0f-aeda4ee2f02e

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=6771655f75fb913a14791c52
Tags:
downloader vmdetect 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
Searching for the window
Creating a file
Creating a file in the Program Files subdirectories
Launching a process
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
DNS request
Connection attempt
Sending an HTTP GET request
Sending a custom TCP 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/677169f8a561e5a2873b82fc/reports/e532825f-dba5-497c-b834-0a588b2eaede/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/c88e2057d44ad73fa1d07ff1af68345ffeb3e153801e85ee4d294d5676a58de5
Result
Threat name:
Nitol, Zegost
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1582021
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 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 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: 1582021 Sample: KL-3.1.16.exe Startdate: 29/12/2024 Architecture: WINDOWS Score: 100 119 ooddoo.top 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 submitted file 2->129 131 9 other signatures 2->131 11 KL-3.1.16.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 113 C:\Users\user\AppData\Local\...\lua5.1.dll, PE32+ 11->113 dropped 115 C:\Users\user\AppData\Local\...\irsetup.exe, PE32+ 11->115 dropped 22 irsetup.exe 3 25 11->22         started        27 conhost.exe 11->27         started        29 SecEdit.exe 11->29         started        147 Antivirus detection for dropped file 14->147 149 Suspicious powershell command line found 14->149 151 Query firmware table information (likely to detect VMs) 14->151 153 7 other signatures 14->153 31 cmd.exe 14->31         started        33 powershell.exe 14->33         started        35 powershell.exe 14->35         started        37 22 other processes 14->37 117 127.0.0.1 unknown unknown 17->117 file6 signatures7 process8 dnsIp9 121 ooddoo.top 104.21.81.224, 443, 49735, 49744 CLOUDFLARENETUS United States 22->121 103 C:\Users\Public\Documents\...\5ar6QsR4e.exe, PE32 22->103 dropped 105 C:\ProgramData\Microsoft\Program\ziliao.jpg, DOS 22->105 dropped 107 C:\Program Files\...\letsvpn-latest.exe, PE32 22->107 dropped 133 Suspicious powershell command line found 22->133 39 cmd.exe 22->39         started        41 powershell.exe 11 22->41         started        43 powershell.exe 11 22->43         started        49 30 other processes 22->49 51 3 other processes 31->51 45 conhost.exe 33->45         started        47 SecEdit.exe 33->47         started        53 2 other processes 35->53 55 35 other processes 37->55 file10 signatures11 process12 process13 57 5ar6QsR4e.exe 39->57         started        62 conhost.exe 39->62         started        64 conhost.exe 41->64         started        66 conhost.exe 43->66         started        68 conhost.exe 49->68         started        70 conhost.exe 49->70         started        72 conhost.exe 49->72         started        74 26 other processes 49->74 dnsIp14 123 143.92.60.116, 25445, 49771 BCPL-SGBGPNETGlobalASNSG Singapore 57->123 109 C:\ProgramData\Program\iusb3mon.exe, PE32 57->109 dropped 111 C:\ProgramData\...\MicrosoftNetFramework.xml, XML 57->111 dropped 135 Antivirus detection for dropped file 57->135 137 Suspicious powershell command line found 57->137 139 Query firmware table information (likely to detect VMs) 57->139 141 6 other signatures 57->141 76 powershell.exe 57->76         started        79 cmd.exe 57->79         started        81 powershell.exe 57->81         started        83 3 other processes 57->83 file15 signatures16 process17 signatures18 143 Found suspicious powershell code related to unpacking or dynamic code loading 76->143 85 conhost.exe 76->85         started        87 SecEdit.exe 76->87         started        145 Uses schtasks.exe or at.exe to add and modify task schedules 79->145 89 conhost.exe 79->89         started        91 conhost.exe 81->91         started        93 SecEdit.exe 81->93         started        95 conhost.exe 83->95         started        97 SecEdit.exe 83->97         started        99 conhost.exe 83->99         started        101 schtasks.exe 83->101         started        process19
Score:
49%
Verdict:
Susipicious
File Type:
PE
Link:
https://malprob.io/report/c88e2057d44ad73fa1d07ff1af68345ffeb3e153801e85ee4d294d5676a58de5
Gathering data
Threat name:
Win32.Backdoor.Zegost
Create hunting rule
Status:
Malicious
First seen:
2024-12-29 15:06:07 UTC
File Type:
PE+ (Exe)
Extracted files:
23
AV detection:
6 of 23 (26.09%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zchcav6ujllt7ioqp7y262bul77lhyktqapil3snffgvm5vfrxsq._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
bootkit defense_evasion discovery evasion execution persistence trojan
Link:
https://tria.ge/reports/241229-sgqvqatpgz/
Behaviour
Checks processor information in registry
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
Modifies RDP port number used by Windows
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/86b3b662-1b2f-49f6-a065-1e48d2126030
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c88e2057d44a/report/overview.html
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/c88e2057d44ad73fa1d07ff1af68345ffeb3e153801e85ee4d294d5676a58de5

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 c88e2057d44ad73fa1d07ff1af68345ffeb3e153801e85ee4d294d5676a58de5

(this sample)

Executable exe 3a58437dc80577ca49a809c17fc06604a7da76f16fe22e0fda53f4157feef3a5

  
Link
https://tria.ge/241229-r3k1xstngq/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 3a58437dc80577ca49a809c17fc06604a7da76f16fe22e0fda53f4157feef3a5
  
Dropping
MD5 2432bf0cdafc01588774773a0fd6a3a9

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