Analysis Report qhw7KZSA53.exe

Overview

General Information

Sample Name: qhw7KZSA53.exe
Analysis ID: 396529
MD5: 4b7687321980c96093c8e6a43b764728
SHA1: 5e27cc0eddb8646e26b72a7ff4f608df45c0eb8a
SHA256: 3a51813adeabd17d4939280137288152b2a3f25f7bf9e738c8f25df5ef49be31
Tags: exeGuLoader
Infos:

Most interesting Screenshot:

Detection

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

Signatures

Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Potential malicious icon found
Yara detected GuLoader
Detected RDTSC dummy instruction sequence (likely for instruction hammering)
Found potential dummy code loops (likely to delay analysis)
Machine Learning detection for sample
Potential time zone aware malware
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected VB6 Downloader Generic
Abnormal high CPU Usage
Contains functionality for execution timing, often used to detect debuggers
Contains functionality to read the PEB
Creates a DirectInput object (often for capturing keystrokes)
PE file contains an invalid checksum
PE file contains strange resources
Program does not show much activity (idle)
Sample file is different than original file name gathered from version info
Uses 32bit PE files
Uses code obfuscation techniques (call, push, ret)

Classification

AV Detection:

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Antivirus / Scanner detection for submitted sample
Source: qhw7KZSA53.exe Avira: detected
Multi AV Scanner detection for submitted file
Source: qhw7KZSA53.exe Virustotal: Detection: 24% Perma Link
Source: qhw7KZSA53.exe ReversingLabs: Detection: 23%
Machine Learning detection for sample
Source: qhw7KZSA53.exe Joe Sandbox ML: detected

Compliance:

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Uses 32bit PE files
Source: qhw7KZSA53.exe Static PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED

Key, Mouse, Clipboard, Microphone and Screen Capturing:

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Creates a DirectInput object (often for capturing keystrokes)
Source: qhw7KZSA53.exe, 00000001.00000002.740127231.00000000006EA000.00000004.00000020.sdmp Binary or memory string: <HOOK MODULE="DDRAW.DLL" FUNCTION="DirectDrawCreateEx"/>

System Summary:

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Potential malicious icon found
Source: initial sample Icon embedded in PE file: bad icon match: 20047c7c70f0e004
Abnormal high CPU Usage
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Process Stats: CPU usage > 98%
PE file contains strange resources
Source: qhw7KZSA53.exe Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
Sample file is different than original file name gathered from version info
Source: qhw7KZSA53.exe, 00000001.00000002.739651089.0000000000418000.00000002.00020000.sdmp Binary or memory string: OriginalFilenameIntuitioners4.exe vs qhw7KZSA53.exe
Source: qhw7KZSA53.exe, 00000001.00000002.740662074.00000000020C0000.00000002.00000001.sdmp Binary or memory string: OriginalFilenameuser32j% vs qhw7KZSA53.exe
Source: qhw7KZSA53.exe Binary or memory string: OriginalFilenameIntuitioners4.exe vs qhw7KZSA53.exe
Uses 32bit PE files
Source: qhw7KZSA53.exe Static PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
Source: classification engine Classification label: mal100.rans.troj.evad.winEXE@1/0@0/0
Source: qhw7KZSA53.exe Static PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Section loaded: C:\Windows\SysWOW64\msvbvm60.dll Jump to behavior
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: qhw7KZSA53.exe Virustotal: Detection: 24%
Source: qhw7KZSA53.exe ReversingLabs: Detection: 23%

Data Obfuscation:

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Yara detected GuLoader
Source: Yara match File source: Process Memory Space: qhw7KZSA53.exe PID: 5380, type: MEMORY
Yara detected VB6 Downloader Generic
Source: Yara match File source: Process Memory Space: qhw7KZSA53.exe PID: 5380, type: MEMORY
PE file contains an invalid checksum
Source: qhw7KZSA53.exe Static PE information: real checksum: 0x22441 should be: 0x1f32c
Uses code obfuscation techniques (call, push, ret)
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Code function: 1_2_00405E52 push ebx; ret 1_2_00405E77
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Code function: 1_2_004042D6 push ecx; iretd 1_2_00404423
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Code function: 1_2_00402B60 push edi; retf 1_2_00402B64
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Code function: 1_2_00406909 pushfd ; iretd 1_2_0040690F
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Code function: 1_2_0040430F push ecx; iretd 1_2_00404423
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Code function: 1_2_02A664EE push eax; ret 1_2_02A664EF
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Code function: 1_2_02A61CCE pushfd ; iretd 1_2_02A61CCF
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Code function: 1_2_02A61CDD pushfd ; iretd 1_2_02A61CF6
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Process information set: NOOPENFILEERRORBOX Jump to behavior

Malware Analysis System Evasion:

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Detected RDTSC dummy instruction sequence (likely for instruction hammering)
Source: C:\Users\user\Desktop\qhw7KZSA53.exe RDTSC instruction interceptor: First address: 0000000002A65981 second address: 0000000002A65981 instructions: 0x00000000 rdtsc 0x00000002 mov eax, 00000001h 0x00000007 cpuid 0x00000009 popad 0x0000000a mov ebx, edx 0x0000000c shl edx, 05h 0x0000000f add edx, ebx 0x00000011 movzx ebx, byte ptr [esi] 0x00000014 jmp 00007FE2343B27FAh 0x00000016 cmp ah, FFFFFF9Ch 0x00000019 add edx, ebx 0x0000001b xor edx, 34C63380h 0x00000021 test ah, dh 0x00000023 add esi, 02h 0x00000026 cmp word ptr [esi], 0000h 0x0000002a jne 00007FE2343B279Dh 0x0000002c pushad 0x0000002d rdtsc
Source: C:\Users\user\Desktop\qhw7KZSA53.exe RDTSC instruction interceptor: First address: 0000000002A6593A second address: 0000000002A6593A instructions:
Potential time zone aware malware
Source: C:\Users\user\Desktop\qhw7KZSA53.exe System information queried: CurrentTimeZoneInformation Jump to behavior
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Source: qhw7KZSA53.exe Binary or memory string: C:\PROGRAM FILES\QEMU-GA\QEMU-GA.EXE
Tries to detect virtualization through RDTSC time measurements
Source: C:\Users\user\Desktop\qhw7KZSA53.exe RDTSC instruction interceptor: First address: 0000000002A65981 second address: 0000000002A65981 instructions: 0x00000000 rdtsc 0x00000002 mov eax, 00000001h 0x00000007 cpuid 0x00000009 popad 0x0000000a mov ebx, edx 0x0000000c shl edx, 05h 0x0000000f add edx, ebx 0x00000011 movzx ebx, byte ptr [esi] 0x00000014 jmp 00007FE2343B27FAh 0x00000016 cmp ah, FFFFFF9Ch 0x00000019 add edx, ebx 0x0000001b xor edx, 34C63380h 0x00000021 test ah, dh 0x00000023 add esi, 02h 0x00000026 cmp word ptr [esi], 0000h 0x0000002a jne 00007FE2343B279Dh 0x0000002c pushad 0x0000002d rdtsc
Source: C:\Users\user\Desktop\qhw7KZSA53.exe RDTSC instruction interceptor: First address: 0000000002A6593A second address: 0000000002A6593A instructions:
Source: C:\Users\user\Desktop\qhw7KZSA53.exe RDTSC instruction interceptor: First address: 0000000002A65BF8 second address: 0000000002A65BB5 instructions: 0x00000000 rdtsc 0x00000002 xor eax, eax 0x00000004 inc eax 0x00000005 cpuid 0x00000007 popad 0x00000008 call 00007FE2343B2805h 0x0000000d lfence 0x00000010 mov edx, dword ptr [7FFE0014h] 0x00000016 lfence 0x00000019 ret 0x0000001a sub edx, esi 0x0000001c ret 0x0000001d test bx, dx 0x00000020 add edi, edx 0x00000022 pushad 0x00000023 mov ecx, 00000072h 0x00000028 rdtsc
Source: C:\Users\user\Desktop\qhw7KZSA53.exe RDTSC instruction interceptor: First address: 0000000002A65BB5 second address: 0000000002A65BF8 instructions: 0x00000000 rdtsc 0x00000002 popad 0x00000003 dec dword ptr [ebp+000000F8h] 0x00000009 cmp dword ptr [ebp+000000F8h], 00000000h 0x00000010 jne 00007FE234EF328Eh 0x00000012 test ah, dh 0x00000014 call 00007FE234EF32FBh 0x00000019 call 00007FE234EF32E5h 0x0000001e lfence 0x00000021 mov edx, dword ptr [7FFE0014h] 0x00000027 lfence 0x0000002a ret 0x0000002b mov esi, edx 0x0000002d pushad 0x0000002e rdtsc
Contains functionality for execution timing, often used to detect debuggers
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Code function: 1_2_02A65695 rdtsc 1_2_02A65695
Program does not show much activity (idle)
Source: all processes Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected
Source: qhw7KZSA53.exe Binary or memory string: C:\Program Files\Qemu-ga\qemu-ga.exe

Anti Debugging:

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Found potential dummy code loops (likely to delay analysis)
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Process Stats: CPU usage > 90% for more than 60s
Contains functionality for execution timing, often used to detect debuggers
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Code function: 1_2_02A65695 rdtsc 1_2_02A65695
Contains functionality to read the PEB
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Code function: 1_2_02A632A5 mov eax, dword ptr fs:[00000030h] 1_2_02A632A5
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Code function: 1_2_02A632A2 mov eax, dword ptr fs:[00000030h] 1_2_02A632A2
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Code function: 1_2_02A61B93 mov eax, dword ptr fs:[00000030h] 1_2_02A61B93
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Code function: 1_2_02A6249B mov eax, dword ptr fs:[00000030h] 1_2_02A6249B
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Code function: 1_2_02A658C4 mov eax, dword ptr fs:[00000030h] 1_2_02A658C4
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Code function: 1_2_02A62463 mov eax, dword ptr fs:[00000030h] 1_2_02A62463
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Code function: 1_2_02A62460 mov eax, dword ptr fs:[00000030h] 1_2_02A62460
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Code function: 1_2_02A6218F mov eax, dword ptr fs:[00000030h] 1_2_02A6218F
Source: C:\Users\user\Desktop\qhw7KZSA53.exe Code function: 1_2_02A65169 mov eax, dword ptr fs:[00000030h] 1_2_02A65169
Program does not show much activity (idle)
Source: all processes Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected
Source: qhw7KZSA53.exe, 00000001.00000002.740293607.0000000000C70000.00000002.00000001.sdmp Binary or memory string: Program Manager
Source: qhw7KZSA53.exe, 00000001.00000002.740293607.0000000000C70000.00000002.00000001.sdmp Binary or memory string: Shell_TrayWnd
Source: qhw7KZSA53.exe, 00000001.00000002.740293607.0000000000C70000.00000002.00000001.sdmp Binary or memory string: Progman
Source: qhw7KZSA53.exe, 00000001.00000002.740293607.0000000000C70000.00000002.00000001.sdmp Binary or memory string: Progmanlock
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: 396529 Sample: qhw7KZSA53.exe Startdate: 23/04/2021 Architecture: WINDOWS Score: 100 8 Potential malicious icon found 2->8 10 Antivirus / Scanner detection for submitted sample 2->10 12 Multi AV Scanner detection for submitted file 2->12 14 4 other signatures 2->14 5 qhw7KZSA53.exe 2->5         started        process3 signatures4 16 Detected RDTSC dummy instruction sequence (likely for instruction hammering) 5->16 18 Found potential dummy code loops (likely to delay analysis) 5->18 20 Tries to detect virtualization through RDTSC time measurements 5->20 22 Potential time zone aware malware 5->22
No contacted IP infos