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Analysis Report Payment Invoice#15821.scr

Overview

General Information

Sample Name:Payment Invoice#15821.scr (renamed file extension from scr to exe)
Analysis ID:297535
MD5:da252617706d479129503affdb0bcd48
SHA1:df8de3a0894a18ab4740a2e3cda39f5cd36bb5a8
SHA256:2a44e9fb201ebfefa05303145def1f3b015495d5ab8190b8d711b50231c25d89
Tags:GuLoaderscr

Most interesting Screenshot:

Detection

GuLoader
Score:92
Range:0 - 100
Whitelisted:false
Confidence:100%

Signatures

Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Yara detected GuLoader
Contains functionality to detect hardware virtualization (CPUID execution measurement)
Executable has a suspicious name (potential lure to open the executable)
Found potential dummy code loops (likely to delay analysis)
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
Antivirus or Machine Learning detection for unpacked file
Contains functionality for execution timing, often used to detect debuggers
Contains functionality to read the PEB
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 code obfuscation techniques (call, push, ret)

Classification

Startup

  • System is w10x64
  • Payment Invoice#15821.exe (PID: 3628 cmdline: 'C:\Users\user\Desktop\Payment Invoice#15821.exe' MD5: DA252617706D479129503AFFDB0BCD48)
  • cleanup

Malware Configuration

No configs have been found

Yara Overview

Memory Dumps

SourceRuleDescriptionAuthorStrings
Process Memory Space: Payment Invoice#15821.exe PID: 3628JoeSecurity_VB6DownloaderGenericYara detected VB6 Downloader GenericJoe Security
    Process Memory Space: Payment Invoice#15821.exe PID: 3628JoeSecurity_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
      Antivirus / Scanner detection for submitted sampleShow sources
      Source: Payment Invoice#15821.exeAvira: detected
      Multi AV Scanner detection for submitted fileShow sources
      Source: Payment Invoice#15821.exeReversingLabs: Detection: 16%
      Source: 1.0.Payment Invoice#15821.exe.400000.0.unpackAvira: Label: TR/AD.VBCryptor.juklp

      System Summary:

      barindex
      Executable has a suspicious name (potential lure to open the executable)Show sources
      Source: Payment Invoice#15821.exeStatic file information: Suspicious name
      Initial sample is a PE file and has a suspicious nameShow sources
      Source: initial sampleStatic PE information: Filename: Payment Invoice#15821.exe
      Source: C:\Users\user\Desktop\Payment Invoice#15821.exeProcess Stats: CPU usage > 98%
      Source: Payment Invoice#15821.exeStatic PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
      Source: Payment Invoice#15821.exeBinary or memory string: OriginalFilename vs Payment Invoice#15821.exe
      Source: Payment Invoice#15821.exe, 00000001.00000002.608661072.00000000021C0000.00000002.00000001.sdmpBinary or memory string: OriginalFilenameuser32j% vs Payment Invoice#15821.exe
      Source: Payment Invoice#15821.exe, 00000001.00000002.606956200.0000000000425000.00000002.00020000.sdmpBinary or memory string: OriginalFilenameFRIBILLET.exe vs Payment Invoice#15821.exe
      Source: Payment Invoice#15821.exeBinary or memory string: OriginalFilenameFRIBILLET.exe vs Payment Invoice#15821.exe
      Source: classification engineClassification label: mal92.troj.evad.winEXE@1/0@0/0
      Source: C:\Users\user\Desktop\Payment Invoice#15821.exeFile created: C:\Users\user\AppData\Local\Temp\~DF783018546CA5F215.TMPJump to behavior
      Source: Payment Invoice#15821.exeStatic PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
      Source: C:\Users\user\Desktop\Payment Invoice#15821.exeSection loaded: C:\Windows\SysWOW64\msvbvm60.dllJump to behavior
      Source: C:\Users\user\Desktop\Payment Invoice#15821.exeKey opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiersJump to behavior
      Source: Payment Invoice#15821.exeReversingLabs: Detection: 16%

      Data Obfuscation:

      barindex
      Yara detected GuLoaderShow sources
      Source: Yara matchFile source: Process Memory Space: Payment Invoice#15821.exe PID: 3628, type: MEMORY
      Yara detected VB6 Downloader GenericShow sources
      Source: Yara matchFile source: Process Memory Space: Payment Invoice#15821.exe PID: 3628, type: MEMORY
      Source: C:\Users\user\Desktop\Payment Invoice#15821.exeCode function: 1_2_00417D59 push dword ptr [ecx-3C004E4Fh]; ret 1_2_00417D69
      Source: C:\Users\user\Desktop\Payment Invoice#15821.exeCode function: 1_2_023042AC push FFFFFFB9h; retf 1_2_023042AE
      Source: C:\Users\user\Desktop\Payment Invoice#15821.exeCode function: 1_2_02304053 push FFFFFFB9h; retf 1_2_02304058
      Source: C:\Users\user\Desktop\Payment Invoice#15821.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
      Source: C:\Users\user\Desktop\Payment Invoice#15821.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
      Source: C:\Users\user\Desktop\Payment Invoice#15821.exeProcess information set: NOOPENFILEERRORBOXJump to behavior

      Malware Analysis System Evasion:

      barindex
      Contains functionality to detect hardware virtualization (CPUID execution measurement)Show sources
      Source: C:\Users\user\Desktop\Payment Invoice#15821.exeCode function: 1_2_02304404 1_2_02304404
      Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)Show sources
      Source: Payment Invoice#15821.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\Payment Invoice#15821.exeRDTSC instruction interceptor: First address: 000000000230417B second address: 00000000023041D3 instructions: 0x00000000 rdtsc 0x00000002 popad 0x00000003 mov ebx, 00001000h 0x00000008 cmp ch, ah 0x0000000a cmp ebx, 00000000h 0x0000000d je 00007F1ED8930C9Bh 0x00000013 cmp bx, ax 0x00000016 dec ebx 0x00000017 cmp byte ptr [esi+ebx], 00000000h 0x0000001b jne 00007F1ED8930D3Fh 0x0000001d cmp bh, bh 0x0000001f test eax, ecx 0x00000021 mov ecx, FFFFFFFFh 0x00000026 jmp 00007F1ED8930D72h 0x00000028 nop 0x00000029 inc ecx 0x0000002a cmp ecx, ebx 0x0000002c jnl 00007F1ED8930C5Ch 0x00000032 pushad 0x00000033 mov eax, 0000000Dh 0x00000038 rdtsc
      Source: C:\Users\user\Desktop\Payment Invoice#15821.exeRDTSC instruction interceptor: First address: 00000000023041D3 second address: 00000000023041D3 instructions: 0x00000000 rdtsc 0x00000002 popad 0x00000003 cmp byte ptr [esi+ecx], 00000000h 0x00000007 je 00007F1ED8980BD7h 0x00000009 jmp 00007F1ED8980C32h 0x0000000b nop 0x0000000c inc ecx 0x0000000d cmp ecx, ebx 0x0000000f jnl 00007F1ED8980B1Ch 0x00000015 pushad 0x00000016 mov eax, 0000000Dh 0x0000001b rdtsc
      Source: C:\Users\user\Desktop\Payment Invoice#15821.exeCode function: 1_2_02300A3C rdtsc 1_2_02300A3C
      Source: all processesThread injection, dropped files, key value created, disk infection and DNS query: no activity detected
      Source: Payment Invoice#15821.exe, 00000001.00000002.620379544.0000000004DAA000.00000004.00000001.sdmpBinary or memory string: Hyper-V Guest Shutdown Service
      Source: Payment Invoice#15821.exe, 00000001.00000002.620379544.0000000004DAA000.00000004.00000001.sdmpBinary or memory string: Hyper-V Remote Desktop Virtualization Service
      Source: Payment Invoice#15821.exe, 00000001.00000002.620379544.0000000004DAA000.00000004.00000001.sdmpBinary or memory string: vmicshutdown
      Source: Payment Invoice#15821.exe, 00000001.00000002.620379544.0000000004DAA000.00000004.00000001.sdmpBinary or memory string: Hyper-V Volume Shadow Copy Requestor
      Source: Payment Invoice#15821.exe, 00000001.00000002.620379544.0000000004DAA000.00000004.00000001.sdmpBinary or memory string: Hyper-V PowerShell Direct Service
      Source: Payment Invoice#15821.exe, 00000001.00000002.620379544.0000000004DAA000.00000004.00000001.sdmpBinary or memory string: Hyper-V Time Synchronization Service
      Source: Payment Invoice#15821.exe, 00000001.00000002.620379544.0000000004DAA000.00000004.00000001.sdmpBinary or memory string: vmicvss
      Source: Payment Invoice#15821.exeBinary or memory string: C:\Program Files\Qemu-ga\qemu-ga.exe
      Source: Payment Invoice#15821.exe, 00000001.00000002.620379544.0000000004DAA000.00000004.00000001.sdmpBinary or memory string: Hyper-V Data Exchange Service
      Source: Payment Invoice#15821.exe, 00000001.00000002.620379544.0000000004DAA000.00000004.00000001.sdmpBinary or memory string: Hyper-V Heartbeat Service
      Source: Payment Invoice#15821.exe, 00000001.00000002.620379544.0000000004DAA000.00000004.00000001.sdmpBinary or memory string: Hyper-V Guest Service Interface
      Source: Payment Invoice#15821.exe, 00000001.00000002.620379544.0000000004DAA000.00000004.00000001.sdmpBinary or memory string: vmicheartbeat

      Anti Debugging:

      barindex
      Found potential dummy code loops (likely to delay analysis)Show sources
      Source: C:\Users\user\Desktop\Payment Invoice#15821.exeProcess Stats: CPU usage > 90% for more than 60s
      Source: C:\Users\user\Desktop\Payment Invoice#15821.exeCode function: 1_2_02300A3C rdtsc 1_2_02300A3C
      Source: C:\Users\user\Desktop\Payment Invoice#15821.exeCode function: 1_2_02301235 mov eax, dword ptr fs:[00000030h]1_2_02301235
      Source: C:\Users\user\Desktop\Payment Invoice#15821.exeCode function: 1_2_02302317 mov eax, dword ptr fs:[00000030h]1_2_02302317
      Source: C:\Users\user\Desktop\Payment Invoice#15821.exeCode function: 1_2_02303846 mov eax, dword ptr fs:[00000030h]1_2_02303846
      Source: C:\Users\user\Desktop\Payment Invoice#15821.exeCode function: 1_2_023018B1 mov eax, dword ptr fs:[00000030h]1_2_023018B1
      Source: C:\Users\user\Desktop\Payment Invoice#15821.exeCode function: 1_2_02304404 mov eax, dword ptr fs:[00000030h]1_2_02304404
      Source: C:\Users\user\Desktop\Payment Invoice#15821.exeCode function: 1_2_02303C61 mov eax, dword ptr fs:[00000030h]1_2_02303C61
      Source: all processesThread injection, dropped files, key value created, disk infection and DNS query: no activity detected
      Source: Payment Invoice#15821.exe, 00000001.00000002.607702946.0000000000C50000.00000002.00000001.sdmpBinary or memory string: Shell_TrayWnd
      Source: Payment Invoice#15821.exe, 00000001.00000002.607702946.0000000000C50000.00000002.00000001.sdmpBinary or memory string: Progman
      Source: Payment Invoice#15821.exe, 00000001.00000002.607702946.0000000000C50000.00000002.00000001.sdmpBinary or memory string: &Program Manager
      Source: Payment Invoice#15821.exe, 00000001.00000002.607702946.0000000000C50000.00000002.00000001.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 Injection1Virtualization/Sandbox Evasion11OS Credential DumpingSecurity Software Discovery411Remote 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 ScriptsSoftware Packing1LSASS MemoryVirtualization/Sandbox Evasion11Remote 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)Process Injection1Security Account ManagerProcess Discovery1SMB/Windows Admin SharesData from Network Shared DriveAutomated ExfiltrationSteganographyExploit SS7 to Track Device LocationObtain Device Cloud BackupsDelete Device Data
      Local AccountsAt (Windows)Logon Script (Mac)Logon Script (Mac)Obfuscated Files or Information1NTDSSystem Information Discovery21Distributed Component Object ModelInput CaptureScheduled TransferProtocol ImpersonationSIM Card SwapCarrier Billing Fraud

      Behavior Graph

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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

      Screenshots

      Thumbnails

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