Windows Analysis Report
PO.exe

Overview

General Information

Sample Name: PO.exe
Analysis ID: 756266
MD5: 9297126fd9624f7dc2d4f64f072668a2
SHA1: c30b3c8fddd49f7dfba687026daf6293f6d90b1b
SHA256: edd8e1858bcc704fdea75837bb448eceda61317e7f8028e82aa2a0e5559c658a
Tags: exe
Infos:

Detection

GuLoader
Score: 60
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Multi AV Scanner detection for submitted file
Yara detected GuLoader
Tries to detect virtualization through RDTSC time measurements
Uses 32bit PE files
Drops PE files
Contains functionality to shutdown / reboot the system
Uses code obfuscation techniques (call, push, ret)
Creates files inside the system directory
Detected potential crypto function
Abnormal high CPU Usage
Contains functionality for read data from the clipboard

Classification

AV Detection
barindex
Multi AV Scanner detection for submitted file
Source: PO.exe ReversingLabs: Detection: 26%
Source: PO.exe Virustotal: Detection: 29% Perma Link
Uses 32bit PE files
Source: PO.exe Static PE information: RELOCS_STRIPPED, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, LOCAL_SYMS_STRIPPED, 32BIT_MACHINE
Source: C:\Users\user\Desktop\PO.exe Registry value created: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\One Jump to behavior
Source: PO.exe Static PE information: DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Source: C:\Users\user\Desktop\PO.exe Code function: 0_2_0040596F CloseHandle,GetTempPathW,DeleteFileW,lstrcatW,lstrcatW,lstrlenW,FindFirstFileW,FindNextFileW,FindClose, 0_2_0040596F
Source: C:\Users\user\Desktop\PO.exe Code function: 0_2_004064C1 FindFirstFileW,FindClose, 0_2_004064C1
Source: C:\Users\user\Desktop\PO.exe Code function: 0_2_004027FB FindFirstFileW, 0_2_004027FB
Source: PO.exe String found in binary or memory: http://nsis.sf.net/NSIS_ErrorError
Contains functionality for read data from the clipboard
Source: C:\Users\user\Desktop\PO.exe Code function: 0_2_0040541C GetDlgItem,GetDlgItem,GetDlgItem,GetDlgItem,GetClientRect,GetSystemMetrics,SendMessageW,SendMessageW,SendMessageW,SendMessageW,SendMessageW,SendMessageW,ShowWindow,ShowWindow,GetDlgItem,SendMessageW,SendMessageW,SendMessageW,GetDlgItem,CreateThread,FindCloseChangeNotification,ShowWindow,ShowWindow,ShowWindow,ShowWindow,SendMessageW,CreatePopupMenu,AppendMenuW,GetWindowRect,TrackPopupMenu,SendMessageW,OpenClipboard,EmptyClipboard,GlobalAlloc,GlobalLock,SendMessageW,GlobalUnlock,SetClipboardData,CloseClipboard, 0_2_0040541C
Uses 32bit PE files
Source: PO.exe Static PE information: RELOCS_STRIPPED, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, LOCAL_SYMS_STRIPPED, 32BIT_MACHINE
Contains functionality to shutdown / reboot the system
Source: C:\Users\user\Desktop\PO.exe Code function: 0_2_004033B6 EntryPoint,SetErrorMode,GetVersion,lstrlenA,#17,OleInitialize,SHGetFileInfoW,GetCommandLineW,GetModuleHandleW,CharNextW,GetTempPathW,GetTempPathW,GetWindowsDirectoryW,lstrcatW,GetTempPathW,lstrcatW,SetEnvironmentVariableW,SetEnvironmentVariableW,SetEnvironmentVariableW,DeleteFileW,OleUninitialize,ExitProcess,lstrcatW,lstrcatW,lstrcatW,lstrcmpiW,SetCurrentDirectoryW,DeleteFileW,CopyFileW,CloseHandle,GetCurrentProcess,OpenProcessToken,LookupPrivilegeValueW,AdjustTokenPrivileges,ExitWindowsEx,ExitProcess, 0_2_004033B6
Creates files inside the system directory
Source: C:\Users\user\Desktop\PO.exe File created: C:\Windows\Handskedukker.ini Jump to behavior
Detected potential crypto function
Source: C:\Users\user\Desktop\PO.exe Code function: 0_2_00406846 0_2_00406846
Source: C:\Users\user\Desktop\PO.exe Code function: 0_2_00404C59 0_2_00404C59
Abnormal high CPU Usage
Source: C:\Users\user\Desktop\PO.exe Process Stats: CPU usage > 98%
Source: PO.exe ReversingLabs: Detection: 26%
Source: PO.exe Virustotal: Detection: 29%
Source: C:\Users\user\Desktop\PO.exe File read: C:\Users\user\Desktop\PO.exe Jump to behavior
Source: PO.exe Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: C:\Users\user\Desktop\PO.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: C:\Users\user\Desktop\PO.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f486a52-3cb1-48fd-8f50-b8dc300d9f9d}\InProcServer32 Jump to behavior
Source: C:\Users\user\Desktop\PO.exe Code function: 0_2_004033B6 EntryPoint,SetErrorMode,GetVersion,lstrlenA,#17,OleInitialize,SHGetFileInfoW,GetCommandLineW,GetModuleHandleW,CharNextW,GetTempPathW,GetTempPathW,GetWindowsDirectoryW,lstrcatW,GetTempPathW,lstrcatW,SetEnvironmentVariableW,SetEnvironmentVariableW,SetEnvironmentVariableW,DeleteFileW,OleUninitialize,ExitProcess,lstrcatW,lstrcatW,lstrcatW,lstrcmpiW,SetCurrentDirectoryW,DeleteFileW,CopyFileW,CloseHandle,GetCurrentProcess,OpenProcessToken,LookupPrivilegeValueW,AdjustTokenPrivileges,ExitWindowsEx,ExitProcess, 0_2_004033B6
Source: C:\Users\user\Desktop\PO.exe File created: C:\Users\user\AppData\Local\Microsoft\Windows\INetCache\Diakonernes Jump to behavior
Source: C:\Users\user\Desktop\PO.exe File created: C:\Users\user\AppData\Local\Temp\nsaCD4A.tmp Jump to behavior
Source: classification engine Classification label: mal60.troj.evad.winEXE@1/4@0/0
Source: C:\Users\user\Desktop\PO.exe Code function: 0_2_00402095 CoCreateInstance, 0_2_00402095
Source: C:\Users\user\Desktop\PO.exe File read: C:\Users\desktop.ini Jump to behavior
Source: C:\Users\user\Desktop\PO.exe Code function: 0_2_004046DD GetDlgItem,SetWindowTextW,SHBrowseForFolderW,CoTaskMemFree,lstrcmpiW,lstrcatW,SetDlgItemTextW,GetDiskFreeSpaceW,MulDiv,SetDlgItemTextW, 0_2_004046DD
Source: C:\Users\user\Desktop\PO.exe Registry value created: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\One Jump to behavior
Source: PO.exe Static PE information: DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE

Data Obfuscation
barindex
Yara detected GuLoader
Source: Yara match File source: 00000000.00000002.766696218.0000000003190000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY
Uses code obfuscation techniques (call, push, ret)
Source: C:\Users\user\Desktop\PO.exe Code function: 0_2_10002DE0 push eax; ret 0_2_10002E0E
Drops PE files
Source: C:\Users\user\Desktop\PO.exe File created: C:\Users\user\AppData\Local\Temp\nsaCD4C.tmp\System.dll Jump to dropped file
Source: C:\Users\user\Desktop\PO.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\PO.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\PO.exe Process information set: NOOPENFILEERRORBOX Jump to behavior

Malware Analysis System Evasion
barindex
Tries to detect virtualization through RDTSC time measurements
Source: C:\Users\user\Desktop\PO.exe RDTSC instruction interceptor: First address: 0000000003191C3A second address: 0000000003191C3A instructions: 0x00000000 rdtsc 0x00000002 jmp 00007FCDBD1742FAh 0x00000004 test cl, cl 0x00000006 cmp cx, C41Eh 0x0000000b cmp ebx, ecx 0x0000000d jc 00007FCDBD1741F7h 0x00000013 test ch, bh 0x00000015 inc ebp 0x00000016 inc ebx 0x00000017 rdtsc
Source: C:\Users\user\Desktop\PO.exe Code function: 0_2_0040596F CloseHandle,GetTempPathW,DeleteFileW,lstrcatW,lstrcatW,lstrlenW,FindFirstFileW,FindNextFileW,FindClose, 0_2_0040596F
Source: C:\Users\user\Desktop\PO.exe Code function: 0_2_004064C1 FindFirstFileW,FindClose, 0_2_004064C1
Source: C:\Users\user\Desktop\PO.exe Code function: 0_2_004027FB FindFirstFileW, 0_2_004027FB
Source: C:\Users\user\Desktop\PO.exe API call chain: ExitProcess graph end node
Source: C:\Users\user\Desktop\PO.exe API call chain: ExitProcess graph end node
Source: C:\Users\user\Desktop\PO.exe Code function: 0_2_004061A0 GetVersion,GetSystemDirectoryW,GetWindowsDirectoryW,SHGetSpecialFolderLocation,SHGetPathFromIDListW,CoTaskMemFree,lstrcatW,lstrlenW, 0_2_004061A0
windows-stand
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Legend:

  • Process
  • Signature
  • Created File
  • DNS/IP Info
  • Is Dropped
  • Is Windows Process
  • Number of created Registry Values
  • Number of created Files
  • Visual Basic
  • Delphi
  • Java
  • .Net C# or VB.NET
  • C, C++ or other language
  • Is malicious
  • Internet
behaviorgraph top1 signatures2 2 Behavior Graph ID: 756266 Sample: PO.exe Startdate: 29/11/2022 Architecture: WINDOWS Score: 60 11 Multi AV Scanner detection for submitted file 2->11 13 Yara detected GuLoader 2->13 5 PO.exe 3 51 2->5         started        process3 file4 9 C:\Users\user\AppData\Local\...\System.dll, PE32 5->9 dropped 15 Tries to detect virtualization through RDTSC time measurements 5->15 signatures5
⊘No contacted IP infos