Windows Analysis Report
SD 2477.exe

Overview

General Information

Sample Name: SD 2477.exe
Analysis ID: 625173
MD5: 746317ad3672cbd82d6c27c85259157a
SHA1: 4e7456b6ca4e428e169f77de9c1e6cc05f409058
SHA256: 7f8c325a18b7d3705bb19aa6db444a42dc69a03dd1ae79bdbfcb9405ecd83584
Tags: exesigned
Infos:

Detection

GuLoader
Score: 72
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Found malware configuration
Multi AV Scanner detection for submitted file
Yara detected GuLoader
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
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: 00000000.00000002.955871906.0000000003200000.00000040.00001000.00020000.00000000.sdmp Malware Configuration Extractor: GuLoader {"Payload URL": "https://drive.google.com/uc?export=download&id=15o_MQXwhHi1q2hB6HCot5QkKY25MLVec"}
Multi AV Scanner detection for submitted file
Source: SD 2477.exe Virustotal: Detection: 33% Perma Link
Source: SD 2477.exe ReversingLabs: Detection: 34%
Uses 32bit PE files
Source: SD 2477.exe Static PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
Source: SD 2477.exe Static PE information: NO_SEH, TERMINAL_SERVER_AWARE, DYNAMIC_BASE, NX_COMPAT
Source: C:\Users\user\Desktop\SD 2477.exe Code function: 0_2_00405D74 CloseHandle,GetTempPathW,DeleteFileW,lstrcatW,lstrcatW,lstrlenW,FindFirstFileW,FindNextFileW,FindClose, 0_2_00405D74
Source: C:\Users\user\Desktop\SD 2477.exe Code function: 0_2_0040699E FindFirstFileW,FindClose, 0_2_0040699E
Source: C:\Users\user\Desktop\SD 2477.exe Code function: 0_2_0040290B FindFirstFileW, 0_2_0040290B

Networking
barindex
C2 URLs / IPs found in malware configuration
Source: Malware configuration extractor URLs: https://drive.google.com/uc?export=download&id=15o_MQXwhHi1q2hB6HCot5QkKY25MLVec
Source: SD 2477.exe, 00000000.00000002.955509565.000000000279A000.00000004.00000800.00020000.00000000.sdmp, SD 2477.exe, 00000000.00000002.955231839.000000000040A000.00000004.00000001.01000000.00000003.sdmp, lang-1026.dll.0.dr String found in binary or memory: http://cacerts.digicert.com/DigiCertAssuredIDRootCA.crt0
Source: SD 2477.exe, 00000000.00000002.955509565.000000000279A000.00000004.00000800.00020000.00000000.sdmp, SD 2477.exe, 00000000.00000002.955231839.000000000040A000.00000004.00000001.01000000.00000003.sdmp, lang-1026.dll.0.dr String found in binary or memory: http://cacerts.digicert.com/DigiCertSHA2AssuredIDCodeSigningCA.crt0
Source: SD 2477.exe, 00000000.00000002.955509565.000000000279A000.00000004.00000800.00020000.00000000.sdmp, SD 2477.exe, 00000000.00000002.955231839.000000000040A000.00000004.00000001.01000000.00000003.sdmp, lang-1026.dll.0.dr String found in binary or memory: http://cacerts.digicert.com/DigiCertSHA2AssuredIDTimestampingCA.crt0
Source: SD 2477.exe, 00000000.00000002.955509565.000000000279A000.00000004.00000800.00020000.00000000.sdmp, SD 2477.exe, 00000000.00000002.955231839.000000000040A000.00000004.00000001.01000000.00000003.sdmp, lang-1026.dll.0.dr String found in binary or memory: http://crl3.digicert.com/DigiCertAssuredIDRootCA.crl0O
Source: SD 2477.exe, 00000000.00000002.955509565.000000000279A000.00000004.00000800.00020000.00000000.sdmp, SD 2477.exe, 00000000.00000002.955231839.000000000040A000.00000004.00000001.01000000.00000003.sdmp, lang-1026.dll.0.dr String found in binary or memory: http://crl3.digicert.com/DigiCertAssuredIDRootCA.crl0P
Source: SD 2477.exe, 00000000.00000002.955509565.000000000279A000.00000004.00000800.00020000.00000000.sdmp, SD 2477.exe, 00000000.00000002.955231839.000000000040A000.00000004.00000001.01000000.00000003.sdmp, lang-1026.dll.0.dr String found in binary or memory: http://crl3.digicert.com/sha2-assured-cs-g1.crl05
Source: SD 2477.exe, 00000000.00000002.955509565.000000000279A000.00000004.00000800.00020000.00000000.sdmp, SD 2477.exe, 00000000.00000002.955231839.000000000040A000.00000004.00000001.01000000.00000003.sdmp, lang-1026.dll.0.dr String found in binary or memory: http://crl3.digicert.com/sha2-assured-ts.crl02
Source: SD 2477.exe, 00000000.00000002.955509565.000000000279A000.00000004.00000800.00020000.00000000.sdmp, SD 2477.exe, 00000000.00000002.955231839.000000000040A000.00000004.00000001.01000000.00000003.sdmp, lang-1026.dll.0.dr String found in binary or memory: http://crl4.digicert.com/DigiCertAssuredIDRootCA.crl0:
Source: SD 2477.exe, 00000000.00000002.955509565.000000000279A000.00000004.00000800.00020000.00000000.sdmp, SD 2477.exe, 00000000.00000002.955231839.000000000040A000.00000004.00000001.01000000.00000003.sdmp, lang-1026.dll.0.dr String found in binary or memory: http://crl4.digicert.com/sha2-assured-cs-g1.crl0L
Source: SD 2477.exe, 00000000.00000002.955509565.000000000279A000.00000004.00000800.00020000.00000000.sdmp, SD 2477.exe, 00000000.00000002.955231839.000000000040A000.00000004.00000001.01000000.00000003.sdmp, lang-1026.dll.0.dr String found in binary or memory: http://crl4.digicert.com/sha2-assured-ts.crl0
Source: SD 2477.exe String found in binary or memory: http://nsis.sf.net/NSIS_ErrorError
Source: SD 2477.exe, 00000000.00000002.955509565.000000000279A000.00000004.00000800.00020000.00000000.sdmp, SD 2477.exe, 00000000.00000002.955231839.000000000040A000.00000004.00000001.01000000.00000003.sdmp, lang-1026.dll.0.dr String found in binary or memory: http://ocsp.digicert.com0C
Source: SD 2477.exe, 00000000.00000002.955509565.000000000279A000.00000004.00000800.00020000.00000000.sdmp, SD 2477.exe, 00000000.00000002.955231839.000000000040A000.00000004.00000001.01000000.00000003.sdmp, lang-1026.dll.0.dr String found in binary or memory: http://ocsp.digicert.com0N
Source: SD 2477.exe, 00000000.00000002.955509565.000000000279A000.00000004.00000800.00020000.00000000.sdmp, SD 2477.exe, 00000000.00000002.955231839.000000000040A000.00000004.00000001.01000000.00000003.sdmp, lang-1026.dll.0.dr String found in binary or memory: http://ocsp.digicert.com0O
Source: SD 2477.exe String found in binary or memory: http://s.symcb.com/universal-root.crl0
Source: SD 2477.exe String found in binary or memory: http://s.symcd.com06
Source: SD 2477.exe String found in binary or memory: http://ts-aia.ws.symantec.com/sha256-tss-ca.cer0(
Source: SD 2477.exe String found in binary or memory: http://ts-crl.ws.symantec.com/sha256-tss-ca.crl0
Source: SD 2477.exe String found in binary or memory: http://ts-ocsp.ws.symantec.com0;
Source: SD 2477.exe, 00000000.00000002.955509565.000000000279A000.00000004.00000800.00020000.00000000.sdmp, SD 2477.exe, 00000000.00000002.955231839.000000000040A000.00000004.00000001.01000000.00000003.sdmp, lang-1026.dll.0.dr String found in binary or memory: http://www.avast.com0/
Source: SD 2477.exe, 00000000.00000002.955509565.000000000279A000.00000004.00000800.00020000.00000000.sdmp, SD 2477.exe, 00000000.00000002.955231839.000000000040A000.00000004.00000001.01000000.00000003.sdmp, lang-1026.dll.0.dr String found in binary or memory: http://www.digicert.com/CPS0
Source: SD 2477.exe String found in binary or memory: https://d.symcb.com/cps0%
Source: SD 2477.exe String found in binary or memory: https://d.symcb.com/rpa0
Source: SD 2477.exe String found in binary or memory: https://d.symcb.com/rpa0.
Source: SD 2477.exe, 00000000.00000002.955509565.000000000279A000.00000004.00000800.00020000.00000000.sdmp, SD 2477.exe, 00000000.00000002.955231839.000000000040A000.00000004.00000001.01000000.00000003.sdmp, lang-1026.dll.0.dr String found in binary or memory: https://www.digicert.com/CPS0
Contains functionality for read data from the clipboard
Source: C:\Users\user\Desktop\SD 2477.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,CloseHandle,ShowWindow,ShowWindow,ShowWindow,ShowWindow,SendMessageW,CreatePopupMenu,AppendMenuW,GetWindowRect,TrackPopupMenu,SendMessageW,OpenClipboard,EmptyClipboard,GlobalAlloc,GlobalLock,SendMessageW,GlobalUnlock,SetClipboardData,CloseClipboard, 0_2_00405809
Uses 32bit PE files
Source: SD 2477.exe Static PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
PE file does not import any functions
Source: lang-1026.dll.0.dr Static PE information: No import functions for PE file found
Contains functionality to shutdown / reboot the system
Source: C:\Users\user\Desktop\SD 2477.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\SD 2477.exe Code function: 0_2_00406D5F 0_2_00406D5F
Source: C:\Users\user\Desktop\SD 2477.exe Code function: 0_2_733D1BFF 0_2_733D1BFF
PE / OLE file has an invalid certificate
Source: SD 2477.exe Static PE information: invalid certificate
Abnormal high CPU Usage
Source: C:\Users\user\Desktop\SD 2477.exe Process Stats: CPU usage > 98%
Source: SD 2477.exe Virustotal: Detection: 33%
Source: SD 2477.exe ReversingLabs: Detection: 34%
Source: C:\Users\user\Desktop\SD 2477.exe File read: C:\Users\user\Desktop\SD 2477.exe Jump to behavior
Source: SD 2477.exe Static PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
Source: C:\Users\user\Desktop\SD 2477.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: C:\Users\user\Desktop\SD 2477.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\SD 2477.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\SD 2477.exe File created: C:\Users\user\AppData\Local\Temp\nso43C.tmp Jump to behavior
Source: classification engine Classification label: mal72.troj.evad.winEXE@1/5@0/0
Source: C:\Users\user\Desktop\SD 2477.exe Code function: 0_2_004021AA CoCreateInstance, 0_2_004021AA
Source: C:\Users\user\Desktop\SD 2477.exe File read: C:\Users\desktop.ini Jump to behavior
Source: C:\Users\user\Desktop\SD 2477.exe Code function: 0_2_00404AB5 GetDlgItem,SetWindowTextW,SHBrowseForFolderW,CoTaskMemFree,lstrcmpiW,lstrcatW,SetDlgItemTextW,GetDiskFreeSpaceW,MulDiv,SetDlgItemTextW, 0_2_00404AB5
Source: SD 2477.exe Static PE information: NO_SEH, TERMINAL_SERVER_AWARE, DYNAMIC_BASE, NX_COMPAT

Data Obfuscation
barindex
Yara detected GuLoader
Source: Yara match File source: 00000000.00000002.955871906.0000000003200000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY
Uses code obfuscation techniques (call, push, ret)
Source: C:\Users\user\Desktop\SD 2477.exe Code function: 0_2_733D30C0 push eax; ret 0_2_733D30EE
Contains functionality to dynamically determine API calls
Source: C:\Users\user\Desktop\SD 2477.exe Code function: 0_2_733D1BFF GlobalAlloc,lstrcpyW,lstrcpyW,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,lstrcpyW,GetModuleHandleW,LoadLibraryW,GetProcAddress,lstrlenW, 0_2_733D1BFF
Drops PE files
Source: C:\Users\user\Desktop\SD 2477.exe File created: C:\Users\user\AppData\Local\Temp\lang-1026.dll Jump to dropped file
Source: C:\Users\user\Desktop\SD 2477.exe File created: C:\Users\user\AppData\Local\Temp\nsz4CB.tmp\System.dll Jump to dropped file
Source: C:\Users\user\Desktop\SD 2477.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\SD 2477.exe RDTSC instruction interceptor: First address: 000000000320D5D6 second address: 000000000320D5D6 instructions: 0x00000000 rdtsc 0x00000002 cmp ebx, ecx 0x00000004 jc 00007FE828AD6D58h 0x00000006 inc ebp 0x00000007 test edx, ecx 0x00000009 inc ebx 0x0000000a rdtsc
Found dropped PE file which has not been started or loaded
Source: C:\Users\user\Desktop\SD 2477.exe Dropped PE file which has not been started: C:\Users\user\AppData\Local\Temp\lang-1026.dll Jump to dropped file
Source: C:\Users\user\Desktop\SD 2477.exe Code function: 0_2_00405D74 CloseHandle,GetTempPathW,DeleteFileW,lstrcatW,lstrcatW,lstrlenW,FindFirstFileW,FindNextFileW,FindClose, 0_2_00405D74
Source: C:\Users\user\Desktop\SD 2477.exe Code function: 0_2_0040699E FindFirstFileW,FindClose, 0_2_0040699E
Source: C:\Users\user\Desktop\SD 2477.exe Code function: 0_2_0040290B FindFirstFileW, 0_2_0040290B
Source: C:\Users\user\Desktop\SD 2477.exe API call chain: ExitProcess graph end node
Source: C:\Users\user\Desktop\SD 2477.exe API call chain: ExitProcess graph end node
Contains functionality to dynamically determine API calls
Source: C:\Users\user\Desktop\SD 2477.exe Code function: 0_2_733D1BFF GlobalAlloc,lstrcpyW,lstrcpyW,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,lstrcpyW,GetModuleHandleW,LoadLibraryW,GetProcAddress,lstrlenW, 0_2_733D1BFF
Source: C:\Users\user\Desktop\SD 2477.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
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Legend:

  • Process
  • Signature
  • Created File
  • DNS/IP Info
  • Is Dropped
  • Is Windows Process
  • Number of created Registry Values
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  • Visual Basic
  • Delphi
  • Java
  • .Net C# or VB.NET
  • C, C++ or other language
  • Is malicious
  • Internet
behaviorgraph top1 signatures2 2 Behavior Graph ID: 625173 Sample: SD 2477.exe Startdate: 12/05/2022 Architecture: WINDOWS Score: 72 12 Found malware configuration 2->12 14 Multi AV Scanner detection for submitted file 2->14 16 Yara detected GuLoader 2->16 18 2 other signatures 2->18 5 SD 2477.exe 22 2->5         started        process3 file4 8 C:\Users\user\AppData\Local\...\System.dll, PE32 5->8 dropped 10 C:\Users\user\AppData\Local\...\lang-1026.dll, PE32 5->10 dropped
⊘No contacted IP infos