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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_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.dll
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeKey opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers

      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
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeProcess information set: NOOPENFILEERRORBOX
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeProcess information set: NOOPENFILEERRORBOX
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeProcess information set: NOOPENFILEERRORBOX
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeProcess information set: NOOPENFILEERRORBOX
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeProcess information set: NOOPENFILEERRORBOX

      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
      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
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F1C6F mov eax, dword ptr fs:[00000030h]
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F1C6D mov eax, dword ptr fs:[00000030h]
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F4CC8 mov eax, dword ptr fs:[00000030h]
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F516B mov eax, dword ptr fs:[00000030h]
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F2D97 mov eax, dword ptr fs:[00000030h]
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F164F mov eax, dword ptr fs:[00000030h]
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F1ED7 mov eax, dword ptr fs:[00000030h]
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F1ED1 mov eax, dword ptr fs:[00000030h]
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F5AEA mov eax, dword ptr fs:[00000030h]
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F5AE0 mov eax, dword ptr fs:[00000030h]
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F5B46 mov eax, dword ptr fs:[00000030h]
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F5B06 mov eax, dword ptr fs:[00000030h]
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F1F00 mov eax, dword ptr fs:[00000030h]
      Source: C:\Users\user\Desktop\001982_Invoice_confirmation.exeCode function: 0_2_004F5B27 mov eax, dword ptr fs:[00000030h]
      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.

      windows-stand

      Antivirus, Machine Learning and Genetic Malware Detection

      Initial Sample

      No Antivirus matches

      Dropped Files

      No Antivirus matches

      Unpacked PE Files

      No Antivirus matches

      Domains

      No Antivirus matches

      URLs

      No Antivirus matches

      Domains and IPs

      Contacted Domains

      No contacted domains info

      Contacted IPs

      No contacted IP infos

      General Information

      Joe Sandbox Version:31.0.0 Red Diamond
      Analysis ID:337597
      Start date:08.01.2021
      Start time:20:08:39
      Joe Sandbox Product:CloudBasic
      Overall analysis duration:0h 11m 36s
      Hypervisor based Inspection enabled:false
      Report type:light
      Sample file name:001982_Invoice_confirmation.exe
      Cookbook file name:default.jbs
      Analysis system description:Windows 10 64 bit v1803 with Office Professional Plus 2016, Chrome 85, IE 11, Adobe Reader DC 19, Java 8 Update 211
      Number of analysed new started processes analysed:26
      Number of new started drivers analysed:0
      Number of existing processes analysed:0
      Number of existing drivers analysed:0
      Number of injected processes analysed:0
      Technologies:
      • HCA enabled
      • EGA enabled
      • HDC enabled
      • AMSI enabled
      Analysis Mode:default
      Analysis stop reason:Timeout
      Detection:MAL
      Classification:mal76.rans.troj.evad.winEXE@1/0@0/0
      EGA Information:Failed
      HDC Information:
      • Successful, ratio: 10% (good quality ratio 4.2%)
      • Quality average: 26.6%
      • Quality standard deviation: 33%
      HCA Information:Failed
      Cookbook Comments:
      • Adjust boot time
      • Enable AMSI
      • Found application associated with file extension: .exe
      • Override analysis time to 240s for sample files taking high CPU consumption
      Warnings:
      Show All
      • Exclude process from analysis (whitelisted): MpCmdRun.exe, audiodg.exe, BackgroundTransferHost.exe, RuntimeBroker.exe, WMIADAP.exe, MusNotifyIcon.exe, backgroundTaskHost.exe, conhost.exe, svchost.exe, wuapihost.exe

      Simulations

      Behavior and APIs

      No simulations

      Joe Sandbox View / Context

      IPs

      No context

      Domains

      No context

      ASN

      No context

      JA3 Fingerprints

      No context

      Dropped Files

      No context

      Created / dropped Files

      No created / dropped files found

      Static File Info

      General

      File type:PE32 executable (GUI) Intel 80386, for MS Windows
      Entropy (8bit):5.801454519311096
      TrID:
      • Win32 Executable (generic) a (10002005/4) 99.96%
      • Generic Win/DOS Executable (2004/3) 0.02%
      • DOS Executable Generic (2002/1) 0.02%
      • Autodesk FLIC Image File (extensions: flc, fli, cel) (7/3) 0.00%
      File name:001982_Invoice_confirmation.exe
      File size:90112
      MD5:e0167e6a13fea0d69a43e377fba75af4
      SHA1:03b36796e30e11ebae69edf59fc135fdb6c69233
      SHA256:f67020d5de462a963aeeaae1afe2bba3ba629da38a85a035a9389c454a402d0a
      SHA512:7bf1c10dbeb8dbc8388219eeef61b43143d0e385f292a03590e3b60c69d1fbc0e7de94b245e3235d74e304c5131ff10c5ec61d7abd6d961f4dc64b2b39785344
      SSDEEP:1536:z+XxmD5xOJi1Hz9EH9WFaqW/k2Vu48dL:zCyzgo5Exuv
      File Content Preview:MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$........6...W...W...W...K...W...u...W...q...W..Rich.W..........................PE..L...;.._.................0...0...............@....@

      File Icon

      Icon Hash:20047c7c70f0e004

      Static PE Info

      General

      Entrypoint:0x401600
      Entrypoint Section:.text
      Digitally signed:false
      Imagebase:0x400000
      Subsystem:windows gui
      Image File Characteristics:LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
      DLL Characteristics:
      Time Stamp:0x5FF88E3B [Fri Jan 8 16:54:19 2021 UTC]
      TLS Callbacks:
      CLR (.Net) Version:
      OS Version Major:4
      OS Version Minor:0
      File Version Major:4
      File Version Minor:0
      Subsystem Version Major:4
      Subsystem Version Minor:0
      Import Hash:690ed9eee3aab240a93936dee17050b4

      Entrypoint Preview

      Instruction
      push 00401C68h
      call 00007FCAB4906215h
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      xor byte ptr [eax], al
      add byte ptr [eax], al
      cmp byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      mov bl, B7h
      and edx, dword ptr [edi+481470A7h]
      scasd
      out E2h, al
      into
      loop 00007FCAB49061EAh
      cli
      sbb dword ptr [eax], eax
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [ecx], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [ebp+54h], dl
      inc ecx
      inc ecx
      dec esp
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      add bh, bh
      int3
      xor dword ptr [eax], eax
      sbb dword ptr [D26DBC53h], edi
      inc esi
      jc 00007FCAB4906268h
      mov fs, di
      lahf
      cmp dword ptr [ecx-7C98128Dh], edx
      and dword ptr [4615E840h], edi
      wait
      lea edx, dword ptr [esi-7745B4A3h]
      idiv byte ptr [edx]
      dec edi
      lodsd
      xor ebx, dword ptr [ecx-48EE309Ah]
      or al, 00h
      stosb
      add byte ptr [eax-2Dh], ah
      xchg eax, ebx
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      add byte ptr [eax], al
      cli
      add eax, dword ptr [eax]
      add byte ptr [edx+00h], al
      add byte ptr [eax], al
      add byte ptr [esi], al
      add byte ptr [ebx+74h], dl
      popad
      je 00007FCAB490628Bh
      outsd
      add byte ptr [44000701h], cl
      insb
      je 00007FCAB4906294h
      popad
      xor al, 00h
      sbb dword ptr [ecx], eax
      add byte ptr [edx+00h], al
      and al, byte ptr [00000724h]

      Data Directories

      NameVirtual AddressVirtual Size Is in Section
      IMAGE_DIRECTORY_ENTRY_EXPORT0x00x0
      IMAGE_DIRECTORY_ENTRY_IMPORT0x139d40x28.text
      IMAGE_DIRECTORY_ENTRY_RESOURCE0x160000x894.rsrc
      IMAGE_DIRECTORY_ENTRY_EXCEPTION0x00x0
      IMAGE_DIRECTORY_ENTRY_SECURITY0x00x0
      IMAGE_DIRECTORY_ENTRY_BASERELOC0x00x0
      IMAGE_DIRECTORY_ENTRY_DEBUG0x00x0
      IMAGE_DIRECTORY_ENTRY_COPYRIGHT0x00x0
      IMAGE_DIRECTORY_ENTRY_GLOBALPTR0x00x0
      IMAGE_DIRECTORY_ENTRY_TLS0x00x0
      IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG0x00x0
      IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT0x2380x20
      IMAGE_DIRECTORY_ENTRY_IAT0x10000x184.text
      IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT0x00x0
      IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR0x00x0
      IMAGE_DIRECTORY_ENTRY_RESERVED0x00x0

      Sections

      NameVirtual AddressVirtual SizeRaw SizeXored PEZLIB ComplexityFile TypeEntropyCharacteristics
      .text0x10000x12fb80x13000False0.415989925987data6.26715450621IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
      .data0x140000x14b00x1000False0.00634765625data0.0IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_WRITE, IMAGE_SCN_MEM_READ
      .rsrc0x160000x8940x1000False0.159423828125data1.84292323273IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ

      Resources

      NameRVASizeTypeLanguageCountry
      RT_ICON0x167640x130data
      RT_ICON0x1647c0x2e8data
      RT_ICON0x163540x128GLS_BINARY_LSB_FIRST
      RT_GROUP_ICON0x163240x30data
      RT_VERSION0x161500x1d4dataChineseTaiwan

      Imports

      DLLImport
      MSVBVM60.DLL_CIcos, _adj_fptan, __vbaHresultCheck, __vbaVarMove, __vbaFreeVar, __vbaLenBstr, __vbaFreeVarList, _adj_fdiv_m64, __vbaFreeObjList, _adj_fprem1, __vbaStrCat, __vbaHresultCheckObj, __vbaLenBstrB, _adj_fdiv_m32, __vbaAryDestruct, __vbaLateMemSt, __vbaExitProc, __vbaObjSet, __vbaOnError, _adj_fdiv_m16i, __vbaObjSetAddref, _adj_fdivr_m16i, __vbaFpR8, _CIsin, __vbaChkstk, EVENT_SINK_AddRef, __vbaStrCmp, __vbaVarTstEq, __vbaAryConstruct2, __vbaR4Str, __vbaObjVar, DllFunctionCall, _adj_fpatan, __vbaLateIdCallLd, __vbaRedim, EVENT_SINK_Release, _CIsqrt, EVENT_SINK_QueryInterface, __vbaExceptHandler, _adj_fprem, _adj_fdivr_m64, __vbaFPException, __vbaStrVarVal, __vbaDateVar, _CIlog, __vbaFileOpen, __vbaNew2, __vbaInStr, _adj_fdiv_m32i, _adj_fdivr_m32i, __vbaStrCopy, __vbaFreeStrList, _adj_fdivr_m32, _adj_fdiv_r, __vbaI4Var, __vbaVarDup, __vbaLateMemCallLd, _CIatan, __vbaStrMove, __vbaUI1Str, _allmul, _CItan, __vbaFPInt, _CIexp, __vbaFreeStr, __vbaFreeObj

      Version Infos

      DescriptionData
      Translation0x0404 0x04b0
      ProductVersion1.00
      InternalNameRaala
      FileVersion1.00
      OriginalFilenameRaala.exe
      ProductNameLogaritm

      Possible Origin

      Language of compilation systemCountry where language is spokenMap
      ChineseTaiwan

      Network Behavior

      No network behavior found

      Code Manipulations

      Statistics

      System Behavior

      General

      Start time:20:09:39
      Start date:08/01/2021
      Path:C:\Users\user\Desktop\001982_Invoice_confirmation.exe
      Wow64 process (32bit):true
      Commandline:'C:\Users\user\Desktop\001982_Invoice_confirmation.exe'
      Imagebase:0x400000
      File size:90112 bytes
      MD5 hash:E0167E6A13FEA0D69A43E377FBA75AF4
      Has elevated privileges:true
      Has administrator privileges:true
      Programmed in:Visual Basic
      Reputation:low

      Disassembly

      Code Analysis

      Reset < >