Windows Analysis Report
Lakeringernes (1).exe

Overview

General Information

Sample Name: Lakeringernes (1).exe
Analysis ID: 755081
MD5: d70de507cc0d22e43ebcf8b61a273ea5
SHA1: 9818fba05573d67b834c90a3208faddea3446545
SHA256: 4dbcd711f2263775f0a1083e0541a07247736ba2fdaabf000654756f8c3dae67
Tags: exesigned
Infos:

Detection

GuLoader
Score: 68
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
PE / OLE file has an invalid certificate
Contains functionality to dynamically determine API calls
Abnormal high CPU Usage
Contains functionality for read data from the clipboard

Classification

AV Detection
barindex
Multi AV Scanner detection for submitted file
Source: Lakeringernes (1).exe ReversingLabs: Detection: 76%
Source: Lakeringernes (1).exe Virustotal: Detection: 34% Perma Link
Uses 32bit PE files
Source: Lakeringernes (1).exe Static PE information: RELOCS_STRIPPED, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, LOCAL_SYMS_STRIPPED, 32BIT_MACHINE
Source: C:\Users\user\Desktop\Lakeringernes (1).exe Registry value created: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Strikketjet Jump to behavior
Source: Lakeringernes (1).exe Static PE information: DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Source: C:\Users\user\Desktop\Lakeringernes (1).exe Code function: 0_2_00405FFD FindFirstFileA,FindClose, 0_2_00405FFD
Source: C:\Users\user\Desktop\Lakeringernes (1).exe Code function: 0_2_0040559B GetTempPathA,DeleteFileA,lstrcatA,lstrcatA,lstrlenA,FindFirstFileA,FindNextFileA,FindClose, 0_2_0040559B
Source: C:\Users\user\Desktop\Lakeringernes (1).exe Code function: 0_2_00402688 FindFirstFileA, 0_2_00402688
Source: Lakeringernes (1).exe String found in binary or memory: http://crl.certum.pl/ctnca.crl0k
Source: Lakeringernes (1).exe String found in binary or memory: http://crl.certum.pl/ctnca2.crl0l
Source: Lakeringernes (1).exe String found in binary or memory: http://crl.certum.pl/ctsca2021.crl0o
Source: Lakeringernes (1).exe String found in binary or memory: http://nsis.sf.net/NSIS_Error
Source: Lakeringernes (1).exe String found in binary or memory: http://nsis.sf.net/NSIS_ErrorError
Source: Lakeringernes (1).exe String found in binary or memory: http://repository.certum.pl/ctnca.cer09
Source: Lakeringernes (1).exe String found in binary or memory: http://repository.certum.pl/ctnca2.cer09
Source: Lakeringernes (1).exe String found in binary or memory: http://repository.certum.pl/ctsca2021.cer0
Source: Lakeringernes (1).exe String found in binary or memory: http://subca.ocsp-certum.com01
Source: Lakeringernes (1).exe String found in binary or memory: http://subca.ocsp-certum.com02
Source: Lakeringernes (1).exe String found in binary or memory: http://subca.ocsp-certum.com05
Source: Lakeringernes (1).exe String found in binary or memory: http://www.certum.pl/CPS0
Contains functionality for read data from the clipboard
Source: C:\Users\user\Desktop\Lakeringernes (1).exe Code function: 0_2_00405050 GetDlgItem,GetDlgItem,GetDlgItem,GetDlgItem,GetClientRect,GetSystemMetrics,SendMessageA,SendMessageA,SendMessageA,SendMessageA,SendMessageA,SendMessageA,ShowWindow,ShowWindow,GetDlgItem,SendMessageA,SendMessageA,SendMessageA,GetDlgItem,CreateThread,CloseHandle,ShowWindow,ShowWindow,ShowWindow,ShowWindow,SendMessageA,CreatePopupMenu,AppendMenuA,GetWindowRect,TrackPopupMenu,SendMessageA,OpenClipboard,EmptyClipboard,GlobalAlloc,GlobalLock,SendMessageA,GlobalUnlock,SetClipboardData,CloseClipboard, 0_2_00405050
Uses 32bit PE files
Source: Lakeringernes (1).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\Lakeringernes (1).exe Code function: 0_2_004030D9 EntryPoint,SetErrorMode,GetVersion,lstrlenA,#17,OleInitialize,SHGetFileInfoA,GetCommandLineA,GetModuleHandleA,CharNextA,GetTempPathA,GetTempPathA,GetWindowsDirectoryA,lstrcatA,GetTempPathA,lstrcatA,SetEnvironmentVariableA,SetEnvironmentVariableA,SetEnvironmentVariableA,DeleteFileA,OleUninitialize,ExitProcess,lstrcatA,lstrcatA,lstrcatA,lstrcmpiA,SetCurrentDirectoryA,DeleteFileA,CopyFileA,CloseHandle,GetCurrentProcess,OpenProcessToken,LookupPrivilegeValueA,AdjustTokenPrivileges,ExitWindowsEx,ExitProcess, 0_2_004030D9
Creates files inside the system directory
Source: C:\Users\user\Desktop\Lakeringernes (1).exe File created: C:\Windows\resources\0409 Jump to behavior
Detected potential crypto function
Source: C:\Users\user\Desktop\Lakeringernes (1).exe Code function: 0_2_0040488F 0_2_0040488F
Source: C:\Users\user\Desktop\Lakeringernes (1).exe Code function: 0_2_00406344 0_2_00406344
PE / OLE file has an invalid certificate
Source: Lakeringernes (1).exe Static PE information: invalid certificate
Abnormal high CPU Usage
Source: C:\Users\user\Desktop\Lakeringernes (1).exe Process Stats: CPU usage > 98%
Source: Lakeringernes (1).exe ReversingLabs: Detection: 76%
Source: Lakeringernes (1).exe Virustotal: Detection: 34%
Source: C:\Users\user\Desktop\Lakeringernes (1).exe File read: C:\Users\user\Desktop\Lakeringernes (1).exe Jump to behavior
Source: Lakeringernes (1).exe Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: C:\Users\user\Desktop\Lakeringernes (1).exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: C:\Users\user\Desktop\Lakeringernes (1).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\Lakeringernes (1).exe Code function: 0_2_004030D9 EntryPoint,SetErrorMode,GetVersion,lstrlenA,#17,OleInitialize,SHGetFileInfoA,GetCommandLineA,GetModuleHandleA,CharNextA,GetTempPathA,GetTempPathA,GetWindowsDirectoryA,lstrcatA,GetTempPathA,lstrcatA,SetEnvironmentVariableA,SetEnvironmentVariableA,SetEnvironmentVariableA,DeleteFileA,OleUninitialize,ExitProcess,lstrcatA,lstrcatA,lstrcatA,lstrcmpiA,SetCurrentDirectoryA,DeleteFileA,CopyFileA,CloseHandle,GetCurrentProcess,OpenProcessToken,LookupPrivilegeValueA,AdjustTokenPrivileges,ExitWindowsEx,ExitProcess, 0_2_004030D9
Source: C:\Users\user\Desktop\Lakeringernes (1).exe File created: C:\Users\user\AppData\Local\Temp\nscFD30.tmp Jump to behavior
Source: C:\Users\user\Desktop\Lakeringernes (1).exe File written: C:\Users\user\AppData\Local\Temp\Distressingly\Bloods\Ultraevangelical\Graviton\Kvle\Materialiseringerne\Antenneanlgget\Custom3.ini Jump to behavior
Source: classification engine Classification label: mal68.troj.evad.winEXE@1/5@0/0
Source: C:\Users\user\Desktop\Lakeringernes (1).exe Code function: 0_2_0040205E CoCreateInstance,MultiByteToWideChar, 0_2_0040205E
Source: C:\Users\user\Desktop\Lakeringernes (1).exe File read: C:\Users\desktop.ini Jump to behavior
Source: C:\Users\user\Desktop\Lakeringernes (1).exe Code function: 0_2_0040431C GetDlgItem,SetWindowTextA,SHBrowseForFolderA,CoTaskMemFree,lstrcmpiA,lstrcatA,SetDlgItemTextA,GetDiskFreeSpaceA,MulDiv,SetDlgItemTextA, 0_2_0040431C
Source: C:\Users\user\Desktop\Lakeringernes (1).exe Registry value created: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Strikketjet Jump to behavior
Source: Lakeringernes (1).exe Static PE information: DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE

Data Obfuscation
barindex
Yara detected GuLoader
Source: Yara match File source: 00000000.00000002.828291319.0000000003260000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000002.827978780.000000000064B000.00000004.00000020.00020000.00000000.sdmp, type: MEMORY
Uses code obfuscation techniques (call, push, ret)
Source: C:\Users\user\Desktop\Lakeringernes (1).exe Code function: 0_2_10002D20 push eax; ret 0_2_10002D4E
Contains functionality to dynamically determine API calls
Source: C:\Users\user\Desktop\Lakeringernes (1).exe Code function: 0_2_10001A5D GlobalAlloc,lstrcpyA,lstrcpyA,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,lstrcpyA,GetModuleHandleA,LoadLibraryA,GetProcAddress,lstrlenA, 0_2_10001A5D
Drops PE files
Source: C:\Users\user\Desktop\Lakeringernes (1).exe File created: C:\Users\user\AppData\Local\Temp\nst187.tmp\System.dll Jump to dropped file
Source: C:\Users\user\Desktop\Lakeringernes (1).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\Lakeringernes (1).exe RDTSC instruction interceptor: First address: 0000000003263429 second address: 0000000003263429 instructions: 0x00000000 rdtsc 0x00000002 cmp ebx, ecx 0x00000004 jc 00007FE785003503h 0x00000006 test dh, bh 0x00000008 test bl, bl 0x0000000a inc ebp 0x0000000b test ax, ax 0x0000000e inc ebx 0x0000000f rdtsc
Source: C:\Users\user\Desktop\Lakeringernes (1).exe Code function: 0_2_00405FFD FindFirstFileA,FindClose, 0_2_00405FFD
Source: C:\Users\user\Desktop\Lakeringernes (1).exe Code function: 0_2_0040559B GetTempPathA,DeleteFileA,lstrcatA,lstrcatA,lstrlenA,FindFirstFileA,FindNextFileA,FindClose, 0_2_0040559B
Source: C:\Users\user\Desktop\Lakeringernes (1).exe Code function: 0_2_00402688 FindFirstFileA, 0_2_00402688
Source: C:\Users\user\Desktop\Lakeringernes (1).exe API call chain: ExitProcess graph end node
Source: C:\Users\user\Desktop\Lakeringernes (1).exe API call chain: ExitProcess graph end node
Contains functionality to dynamically determine API calls
Source: C:\Users\user\Desktop\Lakeringernes (1).exe Code function: 0_2_10001A5D GlobalAlloc,lstrcpyA,lstrcpyA,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,lstrcpyA,GetModuleHandleA,LoadLibraryA,GetProcAddress,lstrlenA, 0_2_10001A5D
Source: C:\Users\user\Desktop\Lakeringernes (1).exe Code function: 0_2_00405D1B GetVersion,GetSystemDirectoryA,GetWindowsDirectoryA,SHGetSpecialFolderLocation,SHGetPathFromIDListA,CoTaskMemFree,lstrcatA,lstrlenA, 0_2_00405D1B
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: 755081 Sample: Lakeringernes (1).exe Startdate: 28/11/2022 Architecture: WINDOWS Score: 68 10 Multi AV Scanner detection for submitted file 2->10 12 Yara detected GuLoader 2->12 14 Tries to detect virtualization through RDTSC time measurements 2->14 5 Lakeringernes (1).exe 2 33 2->5         started        process3 file4 8 C:\Users\user\AppData\Local\...\System.dll, PE32 5->8 dropped
⊘No contacted IP infos