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Analysis Report ENHA7.EXE

Overview

General Information

Sample Name:ENHA7.EXE
Analysis ID:276473
MD5:f4ba66dd890d31dffaf1096961549a02
SHA1:6e65eaf7b1c3fbd9dddeec02ba518a0f691eddd4
SHA256:084e715fe9ea4aefda1b2842b10265fcc1800e24404e4c747fb88b626e1a4f04

Most interesting Screenshot:

Detection

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

Signatures

Multi AV Scanner detection for submitted file
Potential malicious icon found
Yara detected GuLoader
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 strange resources
Sample file is different than original file name gathered from version info
Uses code obfuscation techniques (call, push, ret)

Classification

Startup

  • System is w10x64
  • ENHA7.EXE (PID: 6528 cmdline: 'C:\Users\user\Desktop\ENHA7.EXE' MD5: F4BA66DD890D31DFFAF1096961549A02)
  • cleanup

Malware Configuration

No configs have been found

Yara Overview

Memory Dumps

SourceRuleDescriptionAuthorStrings
Process Memory Space: ENHA7.EXE PID: 6528JoeSecurity_VB6DownloaderGenericYara detected VB6 Downloader GenericJoe Security
    Process Memory Space: ENHA7.EXE PID: 6528JoeSecurity_GuLoaderYara detected GuLoaderJoe Security

      Sigma Overview

      No Sigma rule has matched

      Signature Overview

      Click to jump to signature section

      Show All Signature Results

      AV Detection:

      barindex
      Multi AV Scanner detection for submitted fileShow sources
      Source: ENHA7.EXEVirustotal: Detection: 20%Perma Link
      Source: ENHA7.EXE, 00000000.00000002.498339751.00000000007AA000.00000004.00000020.sdmpBinary or memory string: <HOOK MODULE="DDRAW.DLL" FUNCTION="DirectDrawCreateEx"/>

      System Summary:

      barindex
      Potential malicious icon foundShow sources
      Source: initial sampleIcon embedded in PE file: bad icon match: 20047c7c70f0e004
      Source: C:\Users\user\Desktop\ENHA7.EXEProcess Stats: CPU usage > 98%
      Source: ENHA7.EXEStatic PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
      Source: ENHA7.EXE, 00000000.00000002.498054786.00000000005D0000.00000002.00000001.sdmpBinary or memory string: OriginalFilenameuser32j% vs ENHA7.EXE
      Source: classification engineClassification label: mal72.rans.troj.evad.winEXE@1/0@0/0
      Source: ENHA7.EXEStatic PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
      Source: C:\Users\user\Desktop\ENHA7.EXESection loaded: C:\Windows\SysWOW64\msvbvm60.dllJump to behavior
      Source: C:\Users\user\Desktop\ENHA7.EXEKey opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiersJump to behavior
      Source: ENHA7.EXEVirustotal: Detection: 20%

      Data Obfuscation:

      barindex
      Yara detected GuLoaderShow sources
      Source: Yara matchFile source: Process Memory Space: ENHA7.EXE PID: 6528, type: MEMORY
      Yara detected VB6 Downloader GenericShow sources
      Source: Yara matchFile source: Process Memory Space: ENHA7.EXE PID: 6528, type: MEMORY
      Source: C:\Users\user\Desktop\ENHA7.EXECode function: 0_2_004050C7 push eax; iretd 0_2_004050CD
      Source: C:\Users\user\Desktop\ENHA7.EXECode function: 0_2_00402D7E pushfd ; ret 0_2_00402D90
      Source: C:\Users\user\Desktop\ENHA7.EXECode function: 0_2_02171C14 push ecx; ret 0_2_02171C22
      Source: C:\Users\user\Desktop\ENHA7.EXECode function: 0_2_021720B7 push eax; ret 0_2_021720B8
      Source: C:\Users\user\Desktop\ENHA7.EXECode function: 0_2_02171F08 push ss; retf 0_2_02171F2B
      Source: C:\Users\user\Desktop\ENHA7.EXECode function: 0_2_02171FB7 push eax; ret 0_2_02171FB8
      Source: C:\Users\user\Desktop\ENHA7.EXECode function: 0_2_021719FB push ss; retf 0_2_02171F2B
      Source: C:\Users\user\Desktop\ENHA7.EXEProcess information set: NOOPENFILEERRORBOXJump to behavior
      Source: C:\Users\user\Desktop\ENHA7.EXEProcess information set: NOOPENFILEERRORBOXJump to behavior
      Source: C:\Users\user\Desktop\ENHA7.EXEProcess information set: NOOPENFILEERRORBOXJump to behavior
      Source: C:\Users\user\Desktop\ENHA7.EXEProcess information set: NOOPENFILEERRORBOXJump to behavior
      Source: C:\Users\user\Desktop\ENHA7.EXEProcess information set: NOOPENFILEERRORBOXJump to behavior

      Malware Analysis System Evasion:

      barindex
      Tries to detect virtualization through RDTSC time measurementsShow sources
      Source: C:\Users\user\Desktop\ENHA7.EXERDTSC instruction interceptor: First address: 000000000217269E second address: 000000000217269E instructions: 0x00000000 rdtsc 0x00000002 mov eax, 00000001h 0x00000007 cpuid 0x00000009 popad 0x0000000a call 00007F5F28A16CB8h 0x0000000f lfence 0x00000012 mov edx, dword ptr [7FFE0014h] 0x00000018 lfence 0x0000001b ret 0x0000001c sub edx, esi 0x0000001e ret 0x0000001f pop ecx 0x00000020 add edi, edx 0x00000022 dec ecx 0x00000023 cmp ecx, 00000000h 0x00000026 jne 00007F5F28A16C9Eh 0x00000028 push ecx 0x00000029 test ecx, ebx 0x0000002b cmp bx, dx 0x0000002e call 00007F5F28A16CCEh 0x00000033 call 00007F5F28A16CCAh 0x00000038 lfence 0x0000003b mov edx, dword ptr [7FFE0014h] 0x00000041 lfence 0x00000044 ret 0x00000045 mov esi, edx 0x00000047 pushad 0x00000048 rdtsc
      Source: C:\Users\user\Desktop\ENHA7.EXECode function: 0_2_02170621 rdtsc 0_2_02170621
      Source: ENHA7.EXE, 00000000.00000002.499013133.0000000002170000.00000040.00000001.sdmpBinary or memory string: C:\Program Files\Qemu-ga\qemu-ga.exe9
      Source: ENHA7.EXEBinary or memory string: C:\Program Files\Qemu-ga\qemu-ga.exe
      Source: C:\Users\user\Desktop\ENHA7.EXECode function: 0_2_02170621 rdtsc 0_2_02170621
      Source: C:\Users\user\Desktop\ENHA7.EXECode function: 0_2_021728EA mov eax, dword ptr fs:[00000030h]0_2_021728EA
      Source: C:\Users\user\Desktop\ENHA7.EXECode function: 0_2_02171552 mov eax, dword ptr fs:[00000030h]0_2_02171552
      Source: C:\Users\user\Desktop\ENHA7.EXECode function: 0_2_02172345 mov eax, dword ptr fs:[00000030h]0_2_02172345
      Source: C:\Users\user\Desktop\ENHA7.EXECode function: 0_2_02172565 mov eax, dword ptr fs:[00000030h]0_2_02172565
      Source: ENHA7.EXE, 00000000.00000002.498633691.0000000000D30000.00000002.00000001.sdmpBinary or memory string: Shell_TrayWnd
      Source: ENHA7.EXE, 00000000.00000002.498633691.0000000000D30000.00000002.00000001.sdmpBinary or memory string: Progman
      Source: ENHA7.EXE, 00000000.00000002.498633691.0000000000D30000.00000002.00000001.sdmpBinary or memory string: Progmanlock
      Source: ENHA7.EXE, 00000000.00000002.498633691.0000000000D30000.00000002.00000001.sdmpBinary or memory string: jProgram Manager

      Mitre Att&ck Matrix

      Initial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionExfiltrationCommand and ControlNetwork EffectsRemote Service EffectsImpact
      Valid AccountsWindows Management InstrumentationPath InterceptionProcess Injection1Process Injection1Input Capture1Security Software Discovery111Remote ServicesInput Capture1Exfiltration Over Other Network MediumData ObfuscationEavesdrop on Insecure Network CommunicationRemotely Track Device Without AuthorizationModify System Partition
      Default AccountsScheduled Task/JobBoot or Logon Initialization ScriptsBoot or Logon Initialization ScriptsObfuscated Files or Information1LSASS MemoryProcess Discovery1Remote Desktop ProtocolData from Removable MediaExfiltration Over BluetoothJunk DataExploit SS7 to Redirect Phone Calls/SMSRemotely Wipe Data Without AuthorizationDevice Lockout
      Domain AccountsAt (Linux)Logon Script (Windows)Logon Script (Windows)Obfuscated Files or InformationSecurity Account ManagerSystem Information Discovery11SMB/Windows Admin SharesData from Network Shared DriveAutomated ExfiltrationSteganographyExploit SS7 to Track Device LocationObtain Device Cloud BackupsDelete Device Data

      Behavior Graph

      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

      Screenshots

      Thumbnails

      This section contains all screenshots as thumbnails, including those not shown in the slideshow.