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Analysis Report Zahlung_03242021_jpg.scr

Overview

General Information

Sample Name:Zahlung_03242021_jpg.scr (renamed file extension from scr to exe)
Analysis ID:377275
MD5:6540b24ec7d131ccbc57624915f9180c
SHA1:2c29267c98ff52bb6a44e3e3dca1c0d1c668c870
SHA256:ea36f17e9a118b567da5b9be48f13527cdd109da17d5e5abb0809f9356622f9b
Infos:

Most interesting Screenshot:

Detection

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

Signatures

Multi AV Scanner detection for submitted file
Yara detected GuLoader
Contains functionality to detect hardware virtualization (CPUID execution measurement)
Found potential dummy code loops (likely to delay analysis)
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
Found large amount of non-executed APIs
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 32bit PE files
Uses code obfuscation techniques (call, push, ret)

Classification

Startup

  • System is w10x64
  • Zahlung_03242021_jpg.exe (PID: 6464 cmdline: 'C:\Users\user\Desktop\Zahlung_03242021_jpg.exe' MD5: 6540B24EC7D131CCBC57624915F9180C)
  • cleanup

Malware Configuration

No configs have been found

Yara Overview

Memory Dumps

SourceRuleDescriptionAuthorStrings
Process Memory Space: Zahlung_03242021_jpg.exe PID: 6464JoeSecurity_VB6DownloaderGenericYara detected VB6 Downloader GenericJoe Security
    Process Memory Space: Zahlung_03242021_jpg.exe PID: 6464JoeSecurity_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: Zahlung_03242021_jpg.exeVirustotal: Detection: 64%Perma Link
      Source: Zahlung_03242021_jpg.exeMetadefender: Detection: 24%Perma Link
      Source: Zahlung_03242021_jpg.exeReversingLabs: Detection: 75%
      Source: Zahlung_03242021_jpg.exeStatic PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeProcess Stats: CPU usage > 98%
      Source: Zahlung_03242021_jpg.exeStatic PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
      Source: Zahlung_03242021_jpg.exe, 00000000.00000002.1158313985.0000000000417000.00000002.00020000.sdmpBinary or memory string: OriginalFilenameConfidency.exe vs Zahlung_03242021_jpg.exe
      Source: Zahlung_03242021_jpg.exe, 00000000.00000002.1159005735.0000000002B30000.00000004.00000001.sdmpBinary or memory string: OriginalFilenameConfidency.exeFE2X/ vs Zahlung_03242021_jpg.exe
      Source: Zahlung_03242021_jpg.exeBinary or memory string: OriginalFilenameConfidency.exe vs Zahlung_03242021_jpg.exe
      Source: Zahlung_03242021_jpg.exeStatic PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
      Source: classification engineClassification label: mal76.troj.evad.winEXE@1/0@0/0
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeFile created: C:\Users\user\AppData\Local\Temp\~DF191876E3B643CC71.TMPJump to behavior
      Source: Zahlung_03242021_jpg.exeStatic PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeSection loaded: C:\Windows\SysWOW64\msvbvm60.dllJump to behavior
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeKey opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiersJump to behavior
      Source: Zahlung_03242021_jpg.exeVirustotal: Detection: 64%
      Source: Zahlung_03242021_jpg.exeMetadefender: Detection: 24%
      Source: Zahlung_03242021_jpg.exeReversingLabs: Detection: 75%

      Data Obfuscation:

      barindex
      Yara detected GuLoaderShow sources
      Source: Yara matchFile source: Process Memory Space: Zahlung_03242021_jpg.exe PID: 6464, type: MEMORY
      Yara detected VB6 Downloader GenericShow sources
      Source: Yara matchFile source: Process Memory Space: Zahlung_03242021_jpg.exe PID: 6464, type: MEMORY
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeCode function: 0_2_00408423 push ebp; retf 0_2_0040842F
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeCode function: 0_2_00407EC0 pushfd ; ret 0_2_00407EE9
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeCode function: 0_2_00405A91 push ebx; retf 0_2_00405B20
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeCode function: 0_2_00405B72 push ebx; retf 0_2_00405B20
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeCode function: 0_2_004053B8 push ecx; iretd 0_2_004053BB
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.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\Zahlung_03242021_jpg.exeCode function: 0_2_02201294 0_2_02201294
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeCode function: 0_2_02201310 0_2_02201310
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeCode function: 0_2_02201378 0_2_02201378
      Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)Show sources
      Source: Zahlung_03242021_jpg.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\Zahlung_03242021_jpg.exeRDTSC instruction interceptor: First address: 0000000002204926 second address: 0000000002204926 instructions: 0x00000000 rdtsc 0x00000002 popad 0x00000003 cmp byte ptr [esi+ecx], 00000000h 0x00000007 je 00007FDEA0DE30ECh 0x00000009 inc ecx 0x0000000a cmp ecx, ebx 0x0000000c jnl 00007FDEA0DE306Ch 0x00000012 jmp 00007FDEA0DE315Eh 0x00000014 pushad 0x00000015 mov eax, 0000003Ch 0x0000001a rdtsc
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeRDTSC instruction interceptor: First address: 0000000002204684 second address: 0000000002204684 instructions: 0x00000000 rdtsc 0x00000002 xor eax, eax 0x00000004 inc eax 0x00000005 cpuid 0x00000007 popad 0x00000008 call 00007FDEA0809995h 0x0000000d lfence 0x00000010 mov edx, dword ptr [7FFE0014h] 0x00000016 lfence 0x00000019 ret 0x0000001a sub edx, esi 0x0000001c ret 0x0000001d add edi, edx 0x0000001f cmp eax, 30D55D6Fh 0x00000024 dec dword ptr [ebp+000000F8h] 0x0000002a cmp dword ptr [ebp+000000F8h], 00000000h 0x00000031 jne 00007FDEA0809964h 0x00000033 test cx, bx 0x00000036 call 00007FDEA08099D2h 0x0000003b call 00007FDEA08099A5h 0x00000040 lfence 0x00000043 mov edx, dword ptr [7FFE0014h] 0x00000049 lfence 0x0000004c ret 0x0000004d mov esi, edx 0x0000004f pushad 0x00000050 rdtsc
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeCode function: 0_2_0220467C rdtsc 0_2_0220467C
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeAPI coverage: 0.3 %
      Source: all processesThread injection, dropped files, key value created, disk infection and DNS query: no activity detected
      Source: Zahlung_03242021_jpg.exeBinary or memory string: C:\Program Files\Qemu-ga\qemu-ga.exe

      Anti Debugging:

      barindex
      Found potential dummy code loops (likely to delay analysis)Show sources
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeProcess Stats: CPU usage > 90% for more than 60s
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeCode function: 0_2_0220467C rdtsc 0_2_0220467C
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeCode function: 0_2_02201A7C mov eax, dword ptr fs:[00000030h]0_2_02201A7C
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeCode function: 0_2_02201AAE mov eax, dword ptr fs:[00000030h]0_2_02201AAE
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeCode function: 0_2_02204AE0 mov eax, dword ptr fs:[00000030h]0_2_02204AE0
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeCode function: 0_2_02203B27 mov eax, dword ptr fs:[00000030h]0_2_02203B27
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeCode function: 0_2_0220439F mov eax, dword ptr fs:[00000030h]0_2_0220439F
      Source: C:\Users\user\Desktop\Zahlung_03242021_jpg.exeCode function: 0_2_0220252F mov eax, dword ptr fs:[00000030h]0_2_0220252F
      Source: all processesThread injection, dropped files, key value created, disk infection and DNS query: no activity detected
      Source: Zahlung_03242021_jpg.exe, 00000000.00000002.1158507898.0000000000D70000.00000002.00000001.sdmpBinary or memory string: Program Manager
      Source: Zahlung_03242021_jpg.exe, 00000000.00000002.1158507898.0000000000D70000.00000002.00000001.sdmpBinary or memory string: Shell_TrayWnd
      Source: Zahlung_03242021_jpg.exe, 00000000.00000002.1158507898.0000000000D70000.00000002.00000001.sdmpBinary or memory string: Progman
      Source: Zahlung_03242021_jpg.exe, 00000000.00000002.1158507898.0000000000D70000.00000002.00000001.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 ScriptsProcess Injection1LSASS 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)Obfuscated Files or Information1Security 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)Binary PaddingNTDSSystem Information Discovery21Distributed Component Object ModelInput CaptureScheduled TransferProtocol ImpersonationSIM Card SwapCarrier Billing Fraud

      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.