Windows Analysis Report
PO#4200000866.exe

Overview

General Information

Sample Name: PO#4200000866.exe
Analysis ID: 624323
MD5: 5d0444b70ff5caa4ec3b2ca2e563e724
SHA1: 27309fdae9005f71dcde3501f023819ae6dba6cb
SHA256: fd620fd2a9d5ca1dea1e11013eb4ec486f2f5cb340cd28bcbe39e78271fc5d26
Tags: exeguloader
Infos:

Detection

GuLoader
Score: 76
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Found malware configuration
Multi AV Scanner detection for submitted file
Yara detected GuLoader
Initial sample is a PE file and has a suspicious name
Tries to detect virtualization through RDTSC time measurements
C2 URLs / IPs found in malware configuration
Uses 32bit PE files
PE file does not import any functions
Sample file is different than original file name gathered from version info
PE file contains strange resources
Drops PE files
Contains functionality to shutdown / reboot the system
Uses code obfuscation techniques (call, push, ret)
Detected potential crypto function
PE / OLE file has an invalid certificate
Contains functionality to dynamically determine API calls
Found dropped PE file which has not been started or loaded
Abnormal high CPU Usage
Contains functionality for read data from the clipboard

Classification

AV Detection
barindex
Found malware configuration
Source: 00000000.00000002.777573204.0000000003AA0000.00000040.00001000.00020000.00000000.sdmp Malware Configuration Extractor: GuLoader {"Payload URL": "http://finseb.com/qwer/COrg_ZBOJvB194.bin"}
Multi AV Scanner detection for submitted file
Source: PO#4200000866.exe Virustotal: Detection: 10% Perma Link
Uses 32bit PE files
Source: PO#4200000866.exe Static PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
Source: PO#4200000866.exe Static PE information: NO_SEH, TERMINAL_SERVER_AWARE, DYNAMIC_BASE, NX_COMPAT
Source: Binary string: D:\SourceCode\DevicePlugin\production_V4.2\Service\ServiceSDK\Release\DeviceServicePlugin\DeviceServicePlugin.pdb source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr
Source: Binary string: D:\SourceCode\DevicePlugin\production_V4.2\Service\ServiceSDK\Release\DeviceServicePlugin\DeviceServicePlugin.pdb22 source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr
Source: C:\Users\user\Desktop\PO#4200000866.exe Code function: 0_2_00405D74 CloseHandle,GetTempPathW,DeleteFileW,lstrcatW,lstrcatW,lstrlenW,FindFirstFileW,FindNextFileW,FindClose, 0_2_00405D74
Source: C:\Users\user\Desktop\PO#4200000866.exe Code function: 0_2_0040699E FindFirstFileW,FindClose, 0_2_0040699E
Source: C:\Users\user\Desktop\PO#4200000866.exe Code function: 0_2_0040290B FindFirstFileW, 0_2_0040290B

Networking
barindex
C2 URLs / IPs found in malware configuration
Source: Malware configuration extractor URLs: http://finseb.com/qwer/COrg_ZBOJvB194.bin
Source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr String found in binary or memory: http://cacerts.digicert.com/DigiCertAssuredIDRootCA.crt0
Source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr String found in binary or memory: http://cacerts.digicert.com/DigiCertSHA2AssuredIDTimestampingCA.crt0
Source: PO#4200000866.exe String found in binary or memory: http://crl.certum.pl/ctnca.crl0k
Source: PO#4200000866.exe String found in binary or memory: http://crl.certum.pl/ctnca2.crl0l
Source: PO#4200000866.exe String found in binary or memory: http://crl.certum.pl/ctsca2021.crl0o
Source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr String found in binary or memory: http://crl.globalsign.com/gsextendcodesignsha2g3.crl0
Source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr String found in binary or memory: http://crl.globalsign.com/root-r3.crl0b
Source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr String found in binary or memory: http://crl.globalsign.com/root.crl0G
Source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr String found in binary or memory: http://crl3.digicert.com/DigiCertAssuredIDRootCA.crl0P
Source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr String found in binary or memory: http://crl3.digicert.com/sha2-assured-ts.crl02
Source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr String found in binary or memory: http://crl4.digicert.com/DigiCertAssuredIDRootCA.crl0:
Source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr String found in binary or memory: http://crl4.digicert.com/sha2-assured-ts.crl0
Source: PO#4200000866.exe String found in binary or memory: http://nsis.sf.net/NSIS_ErrorError
Source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr String found in binary or memory: http://ocsp.digicert.com0C
Source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr String found in binary or memory: http://ocsp.digicert.com0O
Source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr String found in binary or memory: http://ocsp.globalsign.com/rootr103
Source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr String found in binary or memory: http://ocsp2.globalsign.com/gsextendcodesignsha2g30U
Source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr String found in binary or memory: http://ocsp2.globalsign.com/rootr306
Source: PO#4200000866.exe String found in binary or memory: http://repository.certum.pl/ctnca.cer09
Source: PO#4200000866.exe String found in binary or memory: http://repository.certum.pl/ctnca2.cer09
Source: PO#4200000866.exe String found in binary or memory: http://repository.certum.pl/ctsca2021.cer0
Source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr String found in binary or memory: http://secure.globalsign.com/cacert/gsextendcodesignsha2g3ocsp.crt0
Source: PO#4200000866.exe String found in binary or memory: http://subca.ocsp-certum.com01
Source: PO#4200000866.exe String found in binary or memory: http://subca.ocsp-certum.com02
Source: PO#4200000866.exe String found in binary or memory: http://subca.ocsp-certum.com05
Source: PO#4200000866.exe String found in binary or memory: http://www.certum.pl/CPS0
Source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr String found in binary or memory: http://www.digicert.com/CPS0
Source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, iso_3166.xml.0.dr String found in binary or memory: http://www.iso.org/iso/country_codes
Source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr String found in binary or memory: https://www.asus.com/campaign/aura/global/download.php
Source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr String found in binary or memory: https://www.digicert.com/CPS0
Source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr String found in binary or memory: https://www.globalsign.com/repository/0
Contains functionality for read data from the clipboard
Source: C:\Users\user\Desktop\PO#4200000866.exe Code function: 0_2_00405809 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_00405809

System Summary
barindex
Initial sample is a PE file and has a suspicious name
Source: initial sample Static PE information: Filename: PO#4200000866.exe
Uses 32bit PE files
Source: PO#4200000866.exe Static PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
PE file does not import any functions
Source: library.dll.0.dr Static PE information: No import functions for PE file found
Sample file is different than original file name gathered from version info
Source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: OriginalFilenameDeviceServicePlugin.dllL vs PO#4200000866.exe
PE file contains strange resources
Source: PO#4200000866.exe Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
Contains functionality to shutdown / reboot the system
Source: C:\Users\user\Desktop\PO#4200000866.exe Code function: 0_2_00403640 EntryPoint,SetErrorMode,GetVersionExW,GetVersionExW,GetVersionExW,lstrlenA,#17,OleInitialize,SHGetFileInfoW,GetCommandLineW,CharNextW,GetTempPathW,GetTempPathW,GetWindowsDirectoryW,lstrcatW,GetTempPathW,lstrcatW,SetEnvironmentVariableW,SetEnvironmentVariableW,SetEnvironmentVariableW,DeleteFileW,lstrcatW,lstrcatW,lstrcatW,lstrcmpiW,SetCurrentDirectoryW,DeleteFileW,CopyFileW,CloseHandle,OleUninitialize,ExitProcess,GetCurrentProcess,OpenProcessToken,LookupPrivilegeValueW,AdjustTokenPrivileges,ExitWindowsEx,ExitProcess, 0_2_00403640
Detected potential crypto function
Source: C:\Users\user\Desktop\PO#4200000866.exe Code function: 0_2_00406D5F 0_2_00406D5F
Source: C:\Users\user\Desktop\PO#4200000866.exe Code function: 0_2_72E51BFF 0_2_72E51BFF
PE / OLE file has an invalid certificate
Source: PO#4200000866.exe Static PE information: invalid certificate
Abnormal high CPU Usage
Source: C:\Users\user\Desktop\PO#4200000866.exe Process Stats: CPU usage > 98%
Source: library.dll.0.dr Static PE information: Section .rsrc
Source: PO#4200000866.exe Virustotal: Detection: 10%
Source: C:\Users\user\Desktop\PO#4200000866.exe File read: C:\Users\user\Desktop\PO#4200000866.exe Jump to behavior
Source: PO#4200000866.exe Static PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
Source: C:\Users\user\Desktop\PO#4200000866.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: C:\Users\user\Desktop\PO#4200000866.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#4200000866.exe Code function: 0_2_00403640 EntryPoint,SetErrorMode,GetVersionExW,GetVersionExW,GetVersionExW,lstrlenA,#17,OleInitialize,SHGetFileInfoW,GetCommandLineW,CharNextW,GetTempPathW,GetTempPathW,GetWindowsDirectoryW,lstrcatW,GetTempPathW,lstrcatW,SetEnvironmentVariableW,SetEnvironmentVariableW,SetEnvironmentVariableW,DeleteFileW,lstrcatW,lstrcatW,lstrcatW,lstrcmpiW,SetCurrentDirectoryW,DeleteFileW,CopyFileW,CloseHandle,OleUninitialize,ExitProcess,GetCurrentProcess,OpenProcessToken,LookupPrivilegeValueW,AdjustTokenPrivileges,ExitWindowsEx,ExitProcess, 0_2_00403640
Source: C:\Users\user\Desktop\PO#4200000866.exe File created: C:\Users\user\AppData\Local\Temp\nshE67.tmp Jump to behavior
Source: classification engine Classification label: mal76.troj.evad.winEXE@1/11@0/0
Source: C:\Users\user\Desktop\PO#4200000866.exe Code function: 0_2_004021AA CoCreateInstance, 0_2_004021AA
Source: C:\Users\user\Desktop\PO#4200000866.exe File read: C:\Users\desktop.ini Jump to behavior
Source: C:\Users\user\Desktop\PO#4200000866.exe Code function: 0_2_00404AB5 GetDlgItem,SetWindowTextW,SHBrowseForFolderW,CoTaskMemFree,lstrcmpiW,lstrcatW,SetDlgItemTextW,GetDiskFreeSpaceW,MulDiv,SetDlgItemTextW, 0_2_00404AB5
Source: PO#4200000866.exe Static PE information: NO_SEH, TERMINAL_SERVER_AWARE, DYNAMIC_BASE, NX_COMPAT
Source: Binary string: D:\SourceCode\DevicePlugin\production_V4.2\Service\ServiceSDK\Release\DeviceServicePlugin\DeviceServicePlugin.pdb source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr
Source: Binary string: D:\SourceCode\DevicePlugin\production_V4.2\Service\ServiceSDK\Release\DeviceServicePlugin\DeviceServicePlugin.pdb22 source: PO#4200000866.exe, 00000000.00000002.777285149.0000000002773000.00000004.00000800.00020000.00000000.sdmp, DeviceServicePlugin.dll.0.dr

Data Obfuscation
barindex
Yara detected GuLoader
Source: Yara match File source: 00000000.00000002.777573204.0000000003AA0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY
Uses code obfuscation techniques (call, push, ret)
Source: C:\Users\user\Desktop\PO#4200000866.exe Code function: 0_2_72E530C0 push eax; ret 0_2_72E530EE
Contains functionality to dynamically determine API calls
Source: C:\Users\user\Desktop\PO#4200000866.exe Code function: 0_2_72E51BFF GlobalAlloc,lstrcpyW,lstrcpyW,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,lstrcpyW,GetModuleHandleW,LoadLibraryW,GetProcAddress,lstrlenW, 0_2_72E51BFF
Drops PE files
Source: C:\Users\user\Desktop\PO#4200000866.exe File created: C:\Users\user\AppData\Local\Temp\library.dll Jump to dropped file
Source: C:\Users\user\Desktop\PO#4200000866.exe File created: C:\Users\user\AppData\Local\Temp\nsn105D.tmp\System.dll Jump to dropped file
Source: C:\Users\user\Desktop\PO#4200000866.exe File created: C:\Users\user\AppData\Local\Temp\DeviceServicePlugin.dll Jump to dropped file
Source: C:\Users\user\Desktop\PO#4200000866.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#4200000866.exe RDTSC instruction interceptor: First address: 0000000003AA29D1 second address: 0000000003AA29D1 instructions: 0x00000000 rdtsc 0x00000002 cmp ebx, ecx 0x00000004 jc 00007F0A1CC2A5F9h 0x00000006 inc ebp 0x00000007 push ss 0x00000008 pop ss 0x00000009 jmp 00007F0A1CC2A61Fh 0x0000000b inc ebx 0x0000000c rdtsc
Found dropped PE file which has not been started or loaded
Source: C:\Users\user\Desktop\PO#4200000866.exe Dropped PE file which has not been started: C:\Users\user\AppData\Local\Temp\library.dll Jump to dropped file
Source: C:\Users\user\Desktop\PO#4200000866.exe Dropped PE file which has not been started: C:\Users\user\AppData\Local\Temp\DeviceServicePlugin.dll Jump to dropped file
Source: C:\Users\user\Desktop\PO#4200000866.exe Code function: 0_2_00405D74 CloseHandle,GetTempPathW,DeleteFileW,lstrcatW,lstrcatW,lstrlenW,FindFirstFileW,FindNextFileW,FindClose, 0_2_00405D74
Source: C:\Users\user\Desktop\PO#4200000866.exe Code function: 0_2_0040699E FindFirstFileW,FindClose, 0_2_0040699E
Source: C:\Users\user\Desktop\PO#4200000866.exe Code function: 0_2_0040290B FindFirstFileW, 0_2_0040290B
Source: C:\Users\user\Desktop\PO#4200000866.exe API call chain: ExitProcess graph end node
Source: C:\Users\user\Desktop\PO#4200000866.exe API call chain: ExitProcess graph end node
Contains functionality to dynamically determine API calls
Source: C:\Users\user\Desktop\PO#4200000866.exe Code function: 0_2_72E51BFF GlobalAlloc,lstrcpyW,lstrcpyW,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,lstrcpyW,GetModuleHandleW,LoadLibraryW,GetProcAddress,lstrlenW, 0_2_72E51BFF
Source: C:\Users\user\Desktop\PO#4200000866.exe Code function: 0_2_00403640 EntryPoint,SetErrorMode,GetVersionExW,GetVersionExW,GetVersionExW,lstrlenA,#17,OleInitialize,SHGetFileInfoW,GetCommandLineW,CharNextW,GetTempPathW,GetTempPathW,GetWindowsDirectoryW,lstrcatW,GetTempPathW,lstrcatW,SetEnvironmentVariableW,SetEnvironmentVariableW,SetEnvironmentVariableW,DeleteFileW,lstrcatW,lstrcatW,lstrcatW,lstrcmpiW,SetCurrentDirectoryW,DeleteFileW,CopyFileW,CloseHandle,OleUninitialize,ExitProcess,GetCurrentProcess,OpenProcessToken,LookupPrivilegeValueW,AdjustTokenPrivileges,ExitWindowsEx,ExitProcess, 0_2_00403640
windows-stand
Hide Legend

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: 624323 Sample: PO#4200000866.exe Startdate: 11/05/2022 Architecture: WINDOWS Score: 76 15 Found malware configuration 2->15 17 Multi AV Scanner detection for submitted file 2->17 19 Yara detected GuLoader 2->19 21 2 other signatures 2->21 5 PO#4200000866.exe 29 2->5         started        process3 file4 9 C:\Users\user\AppData\Local\...\System.dll, PE32 5->9 dropped 11 C:\Users\user\AppData\Local\...\library.dll, PE32 5->11 dropped 13 C:\Users\user\...\DeviceServicePlugin.dll, PE32+ 5->13 dropped 23 Tries to detect virtualization through RDTSC time measurements 5->23 signatures5
⊘No contacted IP infos

Contacted URLs

Name Malicious Antivirus Detection Reputation
http://finseb.com/qwer/COrg_ZBOJvB194.bin true
  • Avira URL Cloud: safe
 unknown