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Analysis Report RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exe

Overview

General Information

Sample Name:RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exe
Analysis ID:338980
MD5:1c51c113cc153b0fc117d86059aef45b
SHA1:5d75bc8f01d6fa59cff423286e9d85c70ab117e9
SHA256:358404c3eb767a7f3c698236e15ed705baeef754594bac47bdb8aaf34f26fb19
Tags:exeGuLoader

Most interesting Screenshot:

Detection

GuLoader
Score:80
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)
Detected RDTSC dummy instruction sequence (likely for instruction hammering)
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 query CPU information (cpuid)
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 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: RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exe PID: 5404JoeSecurity_VB6DownloaderGenericYara detected VB6 Downloader GenericJoe Security
    Process Memory Space: RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exe PID: 5404JoeSecurity_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: RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeVirustotal: Detection: 15%Perma Link
      Source: RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeStatic PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeProcess Stats: CPU usage > 98%
      Source: RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeStatic PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
      Source: RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exe, 00000000.00000002.1261466111.0000000002260000.00000002.00000001.sdmpBinary or memory string: OriginalFilenameuser32j% vs RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exe
      Source: RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exe, 00000000.00000002.1260475100.0000000000414000.00000002.00020000.sdmpBinary or memory string: OriginalFilenameSkosnuderne1.exe vs RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exe
      Source: RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeBinary or memory string: OriginalFilenameSkosnuderne1.exe vs RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exe
      Source: RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeStatic PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
      Source: classification engineClassification label: mal80.troj.evad.winEXE@1/0@0/0
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeFile created: C:\Users\user\AppData\Local\Temp\~DF4DAC590565EC7CD6.TMPJump to behavior
      Source: RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeStatic PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeSection loaded: C:\Windows\SysWOW64\msvbvm60.dllJump to behavior
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeKey opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiersJump to behavior
      Source: RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeVirustotal: Detection: 15%

      Data Obfuscation:

      barindex
      Yara detected GuLoaderShow sources
      Source: Yara matchFile source: Process Memory Space: RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exe PID: 5404, type: MEMORY
      Yara detected VB6 Downloader GenericShow sources
      Source: Yara matchFile source: Process Memory Space: RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exe PID: 5404, type: MEMORY
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_004071E9 push esp; iretd 0_2_004071EA
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_00402246 push es; ret 0_2_0040224E
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_00404EAF push ebp; ret 0_2_00404EB0
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02296600 pushad ; ret 0_2_0229663B
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.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\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02292E31 0_2_02292E31
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02297604 0_2_02297604
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02291E19 0_2_02291E19
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02292E6F 0_2_02292E6F
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02292EBF 0_2_02292EBF
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02291E92 0_2_02291E92
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02292F31 0_2_02292F31
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02291F15 0_2_02291F15
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02292FA6 0_2_02292FA6
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02291FD5 0_2_02291FD5
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02292037 0_2_02292037
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_0229300B 0_2_0229300B
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02293082 0_2_02293082
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02292CF1 0_2_02292CF1
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02291D3A 0_2_02291D3A
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02292D6E 0_2_02292D6E
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02291D53 0_2_02291D53
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02291DAF 0_2_02291DAF
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_022975A7 0_2_022975A7
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_022941BE 0_2_022941BE
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_022975B5 0_2_022975B5
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02292DD1 0_2_02292DD1
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_022939D5 0_2_022939D5
      Detected RDTSC dummy instruction sequence (likely for instruction hammering)Show sources
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeRDTSC instruction interceptor: First address: 0000000002296E67 second address: 0000000002296E67 instructions:
      Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)Show sources
      Source: RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.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\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeRDTSC instruction interceptor: First address: 0000000002296E67 second address: 0000000002296E67 instructions:
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeRDTSC instruction interceptor: First address: 00000000022939B8 second address: 00000000022939B8 instructions: 0x00000000 rdtsc 0x00000002 xor eax, eax 0x00000004 inc eax 0x00000005 cpuid 0x00000007 popad 0x00000008 call 00007F4E20AB4188h 0x0000000d lfence 0x00000010 mov edx, dword ptr [7FFE0014h] 0x00000016 lfence 0x00000019 ret 0x0000001a sub edx, esi 0x0000001c ret 0x0000001d cmp ecx, edx 0x0000001f pop ecx 0x00000020 cmp edx, 4B27F30Eh 0x00000026 add edi, edx 0x00000028 dec ecx 0x00000029 cmp ecx, 00000000h 0x0000002c jne 00007F4E20AB4125h 0x0000002e test eax, ebx 0x00000030 push ecx 0x00000031 jmp 00007F4E20AB41C4h 0x00000033 call 00007F4E20AB41EFh 0x00000038 call 00007F4E20AB4198h 0x0000003d lfence 0x00000040 mov edx, dword ptr [7FFE0014h] 0x00000046 lfence 0x00000049 ret 0x0000004a mov esi, edx 0x0000004c pushad 0x0000004d rdtsc
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_0229222F rdtsc 0_2_0229222F
      Source: all processesThread injection, dropped files, key value created, disk infection and DNS query: no activity detected
      Source: RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.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\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeProcess Stats: CPU usage > 90% for more than 60s
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_0229222F rdtsc 0_2_0229222F
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02297604 mov eax, dword ptr fs:[00000030h]0_2_02297604
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_022926AA mov eax, dword ptr fs:[00000030h]0_2_022926AA
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_022926D9 mov eax, dword ptr fs:[00000030h]0_2_022926D9
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02293776 mov eax, dword ptr fs:[00000030h]0_2_02293776
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02296B81 mov eax, dword ptr fs:[00000030h]0_2_02296B81
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02296B9C mov eax, dword ptr fs:[00000030h]0_2_02296B9C
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02296B9E mov eax, dword ptr fs:[00000030h]0_2_02296B9E
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_022923CB mov eax, dword ptr fs:[00000030h]0_2_022923CB
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_022964BD mov eax, dword ptr fs:[00000030h]0_2_022964BD
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_022964BF mov eax, dword ptr fs:[00000030h]0_2_022964BF
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02291D3A mov eax, dword ptr fs:[00000030h]0_2_02291D3A
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_022975A7 mov eax, dword ptr fs:[00000030h]0_2_022975A7
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_022975B5 mov eax, dword ptr fs:[00000030h]0_2_022975B5
      Source: all processesThread injection, dropped files, key value created, disk infection and DNS query: no activity detected
      Source: RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exe, 00000000.00000002.1261124181.0000000000D80000.00000002.00000001.sdmpBinary or memory string: Shell_TrayWnd
      Source: RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exe, 00000000.00000002.1261124181.0000000000D80000.00000002.00000001.sdmpBinary or memory string: Progman
      Source: RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exe, 00000000.00000002.1261124181.0000000000D80000.00000002.00000001.sdmpBinary or memory string: SProgram Managerl
      Source: RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exe, 00000000.00000002.1261124181.0000000000D80000.00000002.00000001.sdmpBinary or memory string: Shell_TrayWnd,
      Source: RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exe, 00000000.00000002.1261124181.0000000000D80000.00000002.00000001.sdmpBinary or memory string: Progmanlock
      Source: C:\Users\user\Desktop\RFQ#89234A_2021_LISTED_ITEMS_DUC_PHUC_IMPORT_EXPORT_COs.exeCode function: 0_2_02296B9C cpuid 0_2_02296B9C

      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 Discovery511Remote 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 Discovery311Distributed Component Object ModelInput CaptureScheduled TransferProtocol ImpersonationSIM Card SwapCarrier Billing Fraud

      Behavior Graph

      Screenshots

      Thumbnails

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