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Analysis Report 001982_Invoice_confirmation.exe

Overview

General Information

Sample Name:001982_Invoice_confirmation.exe
Analysis ID:337597
MD5:e0167e6a13fea0d69a43e377fba75af4
SHA1:03b36796e30e11ebae69edf59fc135fdb6c69233
SHA256:f67020d5de462a963aeeaae1afe2bba3ba629da38a85a035a9389c454a402d0a
Tags:exeGuLoader

Most interesting Screenshot:

Detection

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

Signatures

Potential malicious icon found
Yara detected GuLoader
Executable has a suspicious name (potential lure to open the executable)
Initial sample is a PE file and has a suspicious name
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
Detected potential crypto function
PE file contains strange resources
Sample file is different than original file name gathered from version info
Uses 32bit PE files
Uses code obfuscation techniques (call, push, ret)

Classification

Startup

  • System is w10x64
  • cleanup

Malware Configuration

No configs have been found

Yara Overview

Memory Dumps

SourceRuleDescriptionAuthorStrings
Process Memory Space: 001982_Invoice_confirmation.exe PID: 7120JoeSecurity_VB6DownloaderGenericYara detected VB6 Downloader GenericJoe Security
    Process Memory Space: 001982_Invoice_confirmation.exe PID: 7120JoeSecurity_GuLoaderYara detected GuLoaderJoe Security

      Sigma Overview

      No Sigma rule has matched

      Signature Overview

      Click to jump to signature section

      Show All Signature Results
      Source: 001982_Invoice_confirmation.exeStatic PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED

      System Summary:

      barindex
      Potential malicious icon foundShow sources
      Source: initial sampleIcon embedded in PE file: bad icon match: 20047c7c70f0e004
      Executable has a suspicious name (potential lure to open the executable)Show sources
      Source: 001982_Invoice_confirmation.exeStatic file information: Suspicious name
      Initial sample is a PE file and has a suspicious nameShow sources
      Source: initial sampleStatic PE information: Filename: 001982_Invoice_confirmation.exe
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeProcess Stats: CPU usage > 98%
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004016000_2_00401600
      Source: 001982_Invoice_confirmation.exeStatic PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
      Source: 001982_Invoice_confirmation.exe, 00000000.00000002.1426308273.0000000000416000.00000002.00020000.sdmpBinary or memory string: OriginalFilenameRaala.exe vs 001982_Invoice_confirmation.exe
      Source: 001982_Invoice_confirmation.exe, 00000000.00000002.1427161222.0000000002090000.00000002.00000001.sdmpBinary or memory string: OriginalFilenameuser32j% vs 001982_Invoice_confirmation.exe
      Source: 001982_Invoice_confirmation.exeBinary or memory string: OriginalFilenameRaala.exe vs 001982_Invoice_confirmation.exe
      Source: 001982_Invoice_confirmation.exeStatic PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
      Source: classification engineClassification label: mal76.rans.troj.evad.winEXE@1/0@0/0
      Source: 001982_Invoice_confirmation.exeStatic PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeSection loaded: C:\Windows\SysWOW64\msvbvm60.dllJump to behavior
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeKey opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiersJump to behavior

      Data Obfuscation:

      barindex
      Yara detected GuLoaderShow sources
      Source: Yara matchFile source: Process Memory Space: 001982_Invoice_confirmation.exe PID: 7120, type: MEMORY
      Yara detected VB6 Downloader GenericShow sources
      Source: Yara matchFile source: Process Memory Space: 001982_Invoice_confirmation.exe PID: 7120, type: MEMORY
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_0040597E push AAA4CA0Bh; retf 0_2_004059C0
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeProcess information set: NOOPENFILEERRORBOXJump to behavior

      Malware Analysis System Evasion:

      barindex
      Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)Show sources
      Source: 001982_Invoice_confirmation.exe, 00000000.00000002.1426657754.00000000004F0000.00000040.00000001.sdmpBinary or memory string: C:\PROGRAM FILES\QEMU-GA\QEMU-GA.EXE
      Tries to detect virtualization through RDTSC time measurementsShow sources
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeRDTSC instruction interceptor: First address: 000000000040433A second address: 000000000040433A instructions: 0x00000000 rdtsc 0x00000002 wait 0x00000003 nop 0x00000004 dec esi 0x00000005 nop 0x00000006 nop 0x00000007 cmp esi, 00000000h 0x0000000a jne 00007FCAB4A39366h 0x0000000c rdtsc
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F1060 rdtsc 0_2_004F1060
      Source: 001982_Invoice_confirmation.exe, 00000000.00000002.1426657754.00000000004F0000.00000040.00000001.sdmpBinary or memory string: C:\Program Files\Qemu-ga\qemu-ga.exe
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F1060 rdtsc 0_2_004F1060
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F1C6F mov eax, dword ptr fs:[00000030h]0_2_004F1C6F
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F1C6D mov eax, dword ptr fs:[00000030h]0_2_004F1C6D
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F4CC8 mov eax, dword ptr fs:[00000030h]0_2_004F4CC8
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F516B mov eax, dword ptr fs:[00000030h]0_2_004F516B
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F2D97 mov eax, dword ptr fs:[00000030h]0_2_004F2D97
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F164F mov eax, dword ptr fs:[00000030h]0_2_004F164F
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F1ED7 mov eax, dword ptr fs:[00000030h]0_2_004F1ED7
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F1ED1 mov eax, dword ptr fs:[00000030h]0_2_004F1ED1
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F5AEA mov eax, dword ptr fs:[00000030h]0_2_004F5AEA
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F5AE0 mov eax, dword ptr fs:[00000030h]0_2_004F5AE0
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F5B46 mov eax, dword ptr fs:[00000030h]0_2_004F5B46
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F5B06 mov eax, dword ptr fs:[00000030h]0_2_004F5B06
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F1F00 mov eax, dword ptr fs:[00000030h]0_2_004F1F00
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F5B27 mov eax, dword ptr fs:[00000030h]0_2_004F5B27
      Source: 001982_Invoice_confirmation.exe, 00000000.00000002.1426938215.0000000000C50000.00000002.00000001.sdmpBinary or memory string: Shell_TrayWnd
      Source: 001982_Invoice_confirmation.exe, 00000000.00000002.1426938215.0000000000C50000.00000002.00000001.sdmpBinary or memory string: Progman
      Source: 001982_Invoice_confirmation.exe, 00000000.00000002.1426938215.0000000000C50000.00000002.00000001.sdmpBinary or memory string: &Program Manager
      Source: 001982_Invoice_confirmation.exe, 00000000.00000002.1426938215.0000000000C50000.00000002.00000001.sdmpBinary or memory string: Progmanlock

      Mitre Att&ck Matrix

      Initial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionExfiltrationCommand and ControlNetwork EffectsRemote Service EffectsImpact
      Valid AccountsWindows Management InstrumentationPath InterceptionProcess Injection1Process Injection1OS Credential DumpingSecurity Software Discovery211Remote ServicesArchive Collected Data1Exfiltration Over Other Network MediumEncrypted Channel1Eavesdrop 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.