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Windows Analysis Report RICHIESTA DI OFFERTA.exe

Overview

General Information

Sample Name:RICHIESTA DI OFFERTA.exe
Analysis ID:450724
MD5:73bb5c4b690b8d6df88d6bc18fb3a553
SHA1:60adddd91b6038fc9d819cf6d647ce3be0b11d38
SHA256:a3feb5265e6d02710f04ff618e966e9da9ba8fc8dc5692d6f7633fe0a3037b66
Infos:

Most interesting Screenshot:

Detection

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

Signatures

Found malware configuration
Yara detected GuLoader
C2 URLs / IPs found in malware configuration
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 virtualization through RDTSC time measurements
Abnormal high CPU Usage
Allocates memory within range which is reserved for system DLLs (kernel32.dll, advapi32.dll, etc)
Contains functionality for execution timing, often used to detect debuggers
Contains functionality to query CPU information (cpuid)
Contains functionality to read the PEB
Detected potential crypto function
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

Process Tree

  • System is w7x64
  • RICHIESTA DI OFFERTA.exe (PID: 2452 cmdline: 'C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exe' MD5: 73BB5C4B690B8D6DF88D6BC18FB3A553)
  • cleanup

Malware Configuration

Threatname: GuLoader

{"Payload URL": "https://bamontarquitectura.com.mx/IRANSAT_kowbB4.bi}"}

Yara Overview

Memory Dumps

SourceRuleDescriptionAuthorStrings
00000000.00000002.2609057616.0000000000460000.00000040.00000001.sdmpJoeSecurity_GuLoader_2Yara detected GuLoaderJoe Security

    Sigma Overview

    No Sigma rule has matched

    Jbx Signature Overview

    Click to jump to signature section

    Show All Signature Results

    AV Detection:

    barindex
    Found malware configurationShow sources
    Source: 00000000.00000002.2609057616.0000000000460000.00000040.00000001.sdmpMalware Configuration Extractor: GuLoader {"Payload URL": "https://bamontarquitectura.com.mx/IRANSAT_kowbB4.bi}"}
    Source: RICHIESTA DI OFFERTA.exeStatic PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED

    Networking:

    barindex
    C2 URLs / IPs found in malware configurationShow sources
    Source: Malware configuration extractorURLs: https://bamontarquitectura.com.mx/IRANSAT_kowbB4.bi}
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeProcess Stats: CPU usage > 98%
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeMemory allocated: 76E20000 page execute and read and writeJump to behavior
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeMemory allocated: 76D20000 page execute and read and writeJump to behavior
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004092BC0_2_004092BC
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046684F0_2_0046684F
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046A4550_2_0046A455
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046681F0_2_0046681F
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004670250_2_00467025
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004670220_2_00467022
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004618FB0_2_004618FB
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00466C930_2_00466C93
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046709F0_2_0046709F
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00467CAB0_2_00467CAB
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004665540_2_00466554
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004669550_2_00466955
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046156F0_2_0046156F
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046A9690_2_0046A969
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004611750_2_00461175
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004639710_2_00463971
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046AFD70_2_0046AFD7
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00466D2C0_2_00466D2C
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046692D0_2_0046692D
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004661380_2_00466138
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004661DC0_2_004661DC
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004669D80_2_004669D8
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046C5D90_2_0046C5D9
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004655A60_2_004655A6
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00461A430_2_00461A43
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004616640_2_00461664
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004612760_2_00461276
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00466E000_2_00466E00
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046662B0_2_0046662B
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004666C70_2_004666C7
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00466EC70_2_00466EC7
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004616E30_2_004616E3
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004612E80_2_004612E8
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004636FA0_2_004636FA
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046E2800_2_0046E280
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004666920_2_00466692
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004662A30_2_004662A3
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00466AAB0_2_00466AAB
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046634E0_2_0046634E
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046DB550_2_0046DB55
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00466B6B0_2_00466B6B
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004667780_2_00466778
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046C3290_2_0046C329
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046AFD70_2_0046AFD7
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00466BEB0_2_00466BEB
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004663F70_2_004663F7
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00465FF10_2_00465FF1
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004617830_2_00461783
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00466F9B0_2_00466F9B
    Source: RICHIESTA DI OFFERTA.exeStatic PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
    Source: RICHIESTA DI OFFERTA.exeStatic PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
    Source: RICHIESTA DI OFFERTA.exe, 00000000.00000002.2609026459.0000000000435000.00000002.00020000.sdmpBinary or memory string: OriginalFilenameIndtr8.exe vs RICHIESTA DI OFFERTA.exe
    Source: RICHIESTA DI OFFERTA.exe, 00000000.00000002.2608868723.00000000003E0000.00000008.00000001.sdmpBinary or memory string: OriginalFilenameuser32j% vs RICHIESTA DI OFFERTA.exe
    Source: RICHIESTA DI OFFERTA.exeBinary or memory string: OriginalFilenameIndtr8.exe vs RICHIESTA DI OFFERTA.exe
    Source: RICHIESTA DI OFFERTA.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\RICHIESTA DI OFFERTA.exeFile created: C:\Users\user\AppData\Local\Temp\~DF94EEF8D419BE56F0.TMPJump to behavior
    Source: RICHIESTA DI OFFERTA.exeStatic PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeSection loaded: C:\Windows\SysWOW64\msvbvm60.dllJump to behavior
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeKey opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiersJump to behavior

    Data Obfuscation:

    barindex
    Yara detected GuLoaderShow sources
    Source: Yara matchFile source: 00000000.00000002.2609057616.0000000000460000.00000040.00000001.sdmp, type: MEMORY
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0040C06E push 00000000h; retf 0_2_0040C0B0
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00406625 push ebp; iretd 0_2_0040662F
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00463429 push 84000002h; retf 0_2_0046342F
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00460095 pushad ; retf 0_2_00460097
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046010B pushad ; retf 0_2_0046010D
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.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\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046684F 0_2_0046684F
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046A455 0_2_0046A455
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046681F 0_2_0046681F
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004618FB 0_2_004618FB
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00466554 0_2_00466554
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00466955 0_2_00466955
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046156F 0_2_0046156F
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046A969 0_2_0046A969
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00461175 0_2_00461175
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00463971 0_2_00463971
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046692D 0_2_0046692D
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00466138 0_2_00466138
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004661DC 0_2_004661DC
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004669D8 0_2_004669D8
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046C5D9 0_2_0046C5D9
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00461664 0_2_00461664
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00461276 0_2_00461276
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046662B 0_2_0046662B
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004666C7 0_2_004666C7
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004616E3 0_2_004616E3
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004612E8 0_2_004612E8
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004636FA 0_2_004636FA
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046E280 0_2_0046E280
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00466692 0_2_00466692
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004662A3 0_2_004662A3
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00466AAB 0_2_00466AAB
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046634E 0_2_0046634E
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00466778 0_2_00466778
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004663F7 0_2_004663F7
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00465FF1 0_2_00465FF1
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00461783 0_2_00461783
    Detected RDTSC dummy instruction sequence (likely for instruction hammering)Show sources
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeRDTSC instruction interceptor: First address: 000000000046E352 second address: 000000000046E352 instructions:
    Tries to detect virtualization through RDTSC time measurementsShow sources
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeRDTSC instruction interceptor: First address: 000000000046E352 second address: 000000000046E352 instructions:
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046684F rdtsc 0_2_0046684F
    Source: all processesThread injection, dropped files, key value created, disk infection and DNS query: no activity detected

    Anti Debugging:

    barindex
    Found potential dummy code loops (likely to delay analysis)Show sources
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeProcess Stats: CPU usage > 90% for more than 60s
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046684F rdtsc 0_2_0046684F
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046A900 mov eax, dword ptr fs:[00000030h]0_2_0046A900
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046C5D9 mov eax, dword ptr fs:[00000030h]0_2_0046C5D9
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_0046B1FE mov eax, dword ptr fs:[00000030h]0_2_0046B1FE
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_00467AB1 mov eax, dword ptr fs:[00000030h]0_2_00467AB1
    Source: all processesThread injection, dropped files, key value created, disk infection and DNS query: no activity detected
    Source: RICHIESTA DI OFFERTA.exe, 00000000.00000002.2609521250.0000000000A00000.00000002.00000001.sdmpBinary or memory string: Program Manager
    Source: RICHIESTA DI OFFERTA.exe, 00000000.00000002.2609521250.0000000000A00000.00000002.00000001.sdmpBinary or memory string: Shell_TrayWnd
    Source: RICHIESTA DI OFFERTA.exe, 00000000.00000002.2609521250.0000000000A00000.00000002.00000001.sdmpBinary or memory string: !Progman
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeCode function: 0_2_004608C5 cpuid 0_2_004608C5
    Source: C:\Users\user\Desktop\RICHIESTA DI OFFERTA.exeKey value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography MachineGuidJump to behavior

    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 Discovery41Remote 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 ScriptsProcess Injection1LSASS MemoryVirtualization/Sandbox Evasion11Remote Desktop ProtocolData from Removable MediaExfiltration Over BluetoothApplication Layer Protocol1Exploit 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 Discovery312Distributed 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.