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Analysis Report 315800_Invoice_confirmation.exe

Overview

General Information

Sample Name:315800_Invoice_confirmation.exe
Analysis ID:337599
MD5:18e2c9f5c6e870ffd1e639e286ab38bc
SHA1:a87e892f654ae12167b934eef883562e6d7284ba
SHA256:91a75290effdceda2b1b0a8c2a16db9e172f406ae6ecce19539b0bdc5656613f
Tags:CharterexeGuLoader

Most interesting Screenshot:

Detection

GuLoader
Score:84
Range:0 - 100
Whitelisted:false
Confidence:100%

Signatures

Multi AV Scanner detection for submitted file
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
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: 315800_Invoice_confirmation.exe PID: 6016JoeSecurity_VB6DownloaderGenericYara detected VB6 Downloader GenericJoe Security
    Process Memory Space: 315800_Invoice_confirmation.exe PID: 6016JoeSecurity_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: 315800_Invoice_confirmation.exeReversingLabs: Detection: 10%
      Source: 315800_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: 315800_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: 315800_Invoice_confirmation.exe
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeProcess Stats: CPU usage > 98%
      Source: 315800_Invoice_confirmation.exeStatic PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
      Source: 315800_Invoice_confirmation.exe, 00000000.00000000.248945860.0000000000417000.00000002.00020000.sdmpBinary or memory string: OriginalFilenamegeochr.exe vs 315800_Invoice_confirmation.exe
      Source: 315800_Invoice_confirmation.exeBinary or memory string: OriginalFilenamegeochr.exe vs 315800_Invoice_confirmation.exe
      Source: 315800_Invoice_confirmation.exeStatic PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
      Source: classification engineClassification label: mal84.rans.troj.evad.winEXE@1/0@0/0
      Source: 315800_Invoice_confirmation.exeStatic PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeSection loaded: C:\Windows\SysWOW64\msvbvm60.dllJump to behavior
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeKey opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiersJump to behavior
      Source: 315800_Invoice_confirmation.exeReversingLabs: Detection: 10%

      Data Obfuscation:

      barindex
      Yara detected GuLoaderShow sources
      Source: Yara matchFile source: Process Memory Space: 315800_Invoice_confirmation.exe PID: 6016, type: MEMORY
      Yara detected VB6 Downloader GenericShow sources
      Source: Yara matchFile source: Process Memory Space: 315800_Invoice_confirmation.exe PID: 6016, type: MEMORY
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeCode function: 0_2_00408627 push ss; iretd 0_2_004085E8
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeCode function: 0_2_00406B64 push 0000005Fh; iretd 0_2_00406B9D
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeCode function: 0_2_00408578 push ss; iretd 0_2_004085E8
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
      Source: C:\Users\user\Desktop\315800_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: 315800_Invoice_confirmation.exeBinary 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\315800_Invoice_confirmation.exeRDTSC instruction interceptor: First address: 0000000000404336 second address: 0000000000404336 instructions: 0x00000000 rdtsc 0x00000002 wait 0x00000003 wait 0x00000004 dec esi 0x00000005 nop 0x00000006 nop 0x00000007 cmp esi, 00000000h 0x0000000a jne 00007F7040C3D2D6h 0x0000000c rdtsc
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeCode function: 0_2_004230E9 rdtsc 0_2_004230E9
      Source: 315800_Invoice_confirmation.exeBinary or memory string: C:\Program Files\Qemu-ga\qemu-ga.exe
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeCode function: 0_2_004230E9 rdtsc 0_2_004230E9
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeCode function: 0_2_00425177 mov eax, dword ptr fs:[00000030h]0_2_00425177
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeCode function: 0_2_00424B45 mov eax, dword ptr fs:[00000030h]0_2_00424B45
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeCode function: 0_2_00424B52 mov eax, dword ptr fs:[00000030h]0_2_00424B52
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeCode function: 0_2_00425C5D mov eax, dword ptr fs:[00000030h]0_2_00425C5D
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeCode function: 0_2_00425C62 mov eax, dword ptr fs:[00000030h]0_2_00425C62
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeCode function: 0_2_00425C2E mov eax, dword ptr fs:[00000030h]0_2_00425C2E
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeCode function: 0_2_00422D7B mov eax, dword ptr fs:[00000030h]0_2_00422D7B
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeCode function: 0_2_00421EDA mov eax, dword ptr fs:[00000030h]0_2_00421EDA
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeCode function: 0_2_00421E92 mov eax, dword ptr fs:[00000030h]0_2_00421E92
      Source: C:\Users\user\Desktop\315800_Invoice_confirmation.exeCode function: 0_2_00421EA6 mov eax, dword ptr fs:[00000030h]0_2_00421EA6
      Source: 315800_Invoice_confirmation.exe, 00000000.00000002.1263784785.0000000000CC0000.00000002.00000001.sdmpBinary or memory string: Shell_TrayWnd
      Source: 315800_Invoice_confirmation.exe, 00000000.00000002.1263784785.0000000000CC0000.00000002.00000001.sdmpBinary or memory string: Progman
      Source: 315800_Invoice_confirmation.exe, 00000000.00000002.1263784785.0000000000CC0000.00000002.00000001.sdmpBinary or memory string: SProgram Managerl
      Source: 315800_Invoice_confirmation.exe, 00000000.00000002.1263784785.0000000000CC0000.00000002.00000001.sdmpBinary or memory string: Shell_TrayWnd,
      Source: 315800_Invoice_confirmation.exe, 00000000.00000002.1263784785.0000000000CC0000.00000002.00000001.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 ServicesData from Local SystemExfiltration 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.