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Analysis Report faktura_ODfk0021.exe

Overview

General Information

Sample Name:faktura_ODfk0021.exe
Analysis ID:387666
MD5:b7b1644fce14205acecbe822df95749a
SHA1:4cbfa9cf4b8dc27bf2b2a2463761092d5c2402e7
SHA256:f760c40ea4cca84e06c511f96c8d43525350e3f52c97c1baa30528d9c4fbcfec
Infos:

Most interesting Screenshot:

Detection

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

Signatures

Found malware configuration
Potential malicious icon found
Yara detected AgentTesla
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)
Hides threads from debuggers
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Checks if the current process is being debugged
Contains functionality for execution timing, often used to detect debuggers
Contains functionality to call native functions
Contains functionality to query CPU information (cpuid)
Contains functionality to read the PEB
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
JA3 SSL client fingerprint seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
PE file contains strange resources
Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sample file is different than original file name gathered from version info
Tries to load missing DLLs
Uses 32bit PE files
Uses code obfuscation techniques (call, push, ret)
Yara detected Credential Stealer

Classification

Startup

  • System is w10x64
  • faktura_ODfk0021.exe (PID: 3784 cmdline: 'C:\Users\user\Desktop\faktura_ODfk0021.exe' MD5: B7B1644FCE14205ACECBE822DF95749A)
    • RegAsm.exe (PID: 6328 cmdline: 'C:\Users\user\Desktop\faktura_ODfk0021.exe' MD5: 6FD7592411112729BF6B1F2F6C34899F)
      • conhost.exe (PID: 6336 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
  • cleanup

Malware Configuration

Threatname: GuLoader

{"Payload URL": "https://drive.google.com/uc?export=download&id=1aKE_k9PJVE2kZn5sEN4ZiJNhonuPIbPw", "Injection Process": ["RegAsm.exe", "RegSvcs.exe", "MSBuild.exe"]}

Yara Overview

Memory Dumps

SourceRuleDescriptionAuthorStrings
00000003.00000002.499283716.000000001DA11000.00000004.00000001.sdmpJoeSecurity_AgentTesla_1Yara detected AgentTeslaJoe Security
    00000003.00000002.499283716.000000001DA11000.00000004.00000001.sdmpJoeSecurity_CredentialStealerYara detected Credential StealerJoe Security
      00000003.00000002.491326318.0000000000C21000.00000040.00000001.sdmpJoeSecurity_GuLoaderYara detected GuLoaderJoe Security
        Process Memory Space: RegAsm.exe PID: 6328JoeSecurity_AgentTesla_1Yara detected AgentTeslaJoe Security
          Process Memory Space: RegAsm.exe PID: 6328JoeSecurity_CredentialStealerYara detected Credential StealerJoe Security
            Click to see the 1 entries

            Sigma Overview

            No Sigma rule has matched

            Signature Overview

            Click to jump to signature section

            Show All Signature Results

            AV Detection:

            barindex
            Found malware configurationShow sources
            Source: 00000003.00000002.491326318.0000000000C21000.00000040.00000001.sdmpMalware Configuration Extractor: GuLoader {"Payload URL": "https://drive.google.com/uc?export=download&id=1aKE_k9PJVE2kZn5sEN4ZiJNhonuPIbPw", "Injection Process": ["RegAsm.exe", "RegSvcs.exe", "MSBuild.exe"]}
            Source: faktura_ODfk0021.exeStatic PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
            Source: unknownHTTPS traffic detected: 172.217.23.33:443 -> 192.168.2.7:49712 version: TLS 1.2

            Networking:

            barindex
            C2 URLs / IPs found in malware configurationShow sources
            Source: Malware configuration extractorURLs: https://drive.google.com/uc?export=download&id=1aKE_k9PJVE2kZn5sEN4ZiJNhonuPIbPw
            Source: Joe Sandbox ViewJA3 fingerprint: 37f463bf4616ecd445d4a1937da06e19
            Source: unknownDNS traffic detected: queries for: doc-0s-04-docs.googleusercontent.com
            Source: RegAsm.exe, 00000003.00000002.499283716.000000001DA11000.00000004.00000001.sdmpString found in binary or memory: http://127.0.0.1:HTTP/1.1
            Source: RegAsm.exe, 00000003.00000002.499283716.000000001DA11000.00000004.00000001.sdmpString found in binary or memory: http://DynDns.comDynDNS
            Source: RegAsm.exe, 00000003.00000002.491961756.0000000000FFA000.00000004.00000020.sdmpString found in binary or memory: http://crl.globalsign.net/root-r2.crl0
            Source: RegAsm.exe, 00000003.00000002.491961756.0000000000FFA000.00000004.00000020.sdmpString found in binary or memory: http://crl.pki.goog/GTS1O1core.crl0
            Source: RegAsm.exe, 00000003.00000002.491961756.0000000000FFA000.00000004.00000020.sdmpString found in binary or memory: http://crl.pki.goog/gsr2/gsr2.crl0?
            Source: RegAsm.exe, 00000003.00000002.491961756.0000000000FFA000.00000004.00000020.sdmpString found in binary or memory: http://ocsp.pki.goog/gsr202
            Source: RegAsm.exe, 00000003.00000002.491961756.0000000000FFA000.00000004.00000020.sdmpString found in binary or memory: http://ocsp.pki.goog/gts1o1core0
            Source: RegAsm.exe, 00000003.00000002.491961756.0000000000FFA000.00000004.00000020.sdmpString found in binary or memory: http://pki.goog/gsr2/GTS1O1.crt0
            Source: RegAsm.exe, 00000003.00000002.499283716.000000001DA11000.00000004.00000001.sdmpString found in binary or memory: http://zQsfOZ.com
            Source: RegAsm.exe, 00000003.00000002.491917908.0000000000FE7000.00000004.00000020.sdmpString found in binary or memory: https://csp.withgoogle.com/csp/drive-explorer/
            Source: RegAsm.exe, 00000003.00000002.491961756.0000000000FFA000.00000004.00000020.sdmpString found in binary or memory: https://doc-0s-04-docs.googleusercontent.com/docs/securesc/ha0ro937gcuc7l7deffksulhg5h7mbp1/uq2l008j
            Source: RegAsm.exeString found in binary or memory: https://drive.google.com/uc?export=download&id=1aKE_k9PJVE2kZn5sEN4ZiJNhonuPIbPw
            Source: RegAsm.exe, 00000003.00000002.491961756.0000000000FFA000.00000004.00000020.sdmpString found in binary or memory: https://pki.goog/repository/0
            Source: RegAsm.exe, 00000003.00000002.499283716.000000001DA11000.00000004.00000001.sdmpString found in binary or memory: https://www.theonionrouter.com/dist.torproject.org/torbrowser/9.5.3/tor-win32-0.4.3.6.zip%tordir%%ha
            Source: unknownNetwork traffic detected: HTTP traffic on port 49712 -> 443
            Source: unknownNetwork traffic detected: HTTP traffic on port 443 -> 49712
            Source: unknownHTTPS traffic detected: 172.217.23.33:443 -> 192.168.2.7:49712 version: TLS 1.2

            System Summary:

            barindex
            Potential malicious icon foundShow sources
            Source: initial sampleIcon embedded in PE file: bad icon match: 20047c7c70f0e004
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeCode function: 0_2_022B3BC4 NtResumeThread,0_2_022B3BC4
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeCode function: 3_2_00C23BC4 NtQueryInformationProcess,3_2_00C23BC4
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeCode function: 3_2_00C236EE NtProtectVirtualMemory,3_2_00C236EE
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeCode function: 0_2_004015B40_2_004015B4
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeCode function: 3_2_1D9E47A03_2_1D9E47A0
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeCode function: 3_2_1D9E47903_2_1D9E4790
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeCode function: 3_2_1D9E47733_2_1D9E4773
            Source: faktura_ODfk0021.exeStatic PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
            Source: faktura_ODfk0021.exe, 00000000.00000002.324592390.0000000002A30000.00000004.00000001.sdmpBinary or memory string: OriginalFilenameCass7.exeFE2XADP vs faktura_ODfk0021.exe
            Source: faktura_ODfk0021.exe, 00000000.00000002.323533035.0000000000412000.00000002.00020000.sdmpBinary or memory string: OriginalFilenameCass7.exe vs faktura_ODfk0021.exe
            Source: faktura_ODfk0021.exeBinary or memory string: OriginalFilenameCass7.exe vs faktura_ODfk0021.exe
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeSection loaded: sfc.dllJump to behavior
            Source: faktura_ODfk0021.exeStatic PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
            Source: classification engineClassification label: mal100.rans.troj.evad.winEXE@4/0@1/1
            Source: C:\Windows\System32\conhost.exeMutant created: \Sessions\1\BaseNamedObjects\Local\SM0:6336:120:WilError_01
            Source: faktura_ODfk0021.exeStatic PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeSection loaded: C:\Windows\SysWOW64\msvbvm60.dllJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeSection loaded: C:\Windows\assembly\NativeImages_v4.0.30319_32\mscorlib\a152fe02a317a77aeee36903305e8ba6\mscorlib.ni.dllJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeWMI Queries: IWbemServices::CreateInstanceEnum - root\cimv2 : Win32_Processor
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeKey opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiersJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeFile read: C:\Windows\System32\drivers\etc\hostsJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeFile read: C:\Windows\System32\drivers\etc\hostsJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeFile read: C:\Windows\System32\drivers\etc\hostsJump to behavior
            Source: unknownProcess created: C:\Users\user\Desktop\faktura_ODfk0021.exe 'C:\Users\user\Desktop\faktura_ODfk0021.exe'
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeProcess created: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe 'C:\Users\user\Desktop\faktura_ODfk0021.exe'
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess created: C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeProcess created: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe 'C:\Users\user\Desktop\faktura_ODfk0021.exe' Jump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeKey value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CF4CC405-E2C5-4DDD-B3CE-5E7582D8C9FA}\InprocServer32Jump to behavior
            Source: Window RecorderWindow detected: More than 3 window changes detected

            Data Obfuscation:

            barindex
            Yara detected GuLoaderShow sources
            Source: Yara matchFile source: 00000003.00000002.491326318.0000000000C21000.00000040.00000001.sdmp, type: MEMORY
            Source: Yara matchFile source: Process Memory Space: RegAsm.exe PID: 6328, type: MEMORY
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeCode function: 0_2_00401E78 pushfd ; retn 0000h0_2_0040228E
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeCode function: 0_2_004066CF push ebp; retf 0_2_004066E0
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeCode function: 0_2_00406D53 push 38BB86EFh; retf 0_2_00406D6B
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeCode function: 0_2_022B0104 push ADC64FC2h; iretd 0_2_022B0109
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeCode function: 0_2_022B0F63 push ds; retf 0_2_022B0F7C
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeCode function: 0_2_022B0174 push ADC64FC2h; iretd 0_2_022B0179
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeCode function: 0_2_022B2F47 push edx; retf 0_2_022B2F48
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeCode function: 0_2_022B0144 push ADC64FC2h; iretd 0_2_022B0149
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeCode function: 0_2_022B01AC push ADC64FC2h; iretd 0_2_022B01B1
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeCode function: 0_2_022B1DFB push edx; retf 0_2_022B1DFC
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeCode function: 3_2_1D9EC598 push 941FABA6h; retf 3_2_1D9EC64D
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
            Source: C:\Windows\System32\conhost.exeProcess information set: NOOPENFILEERRORBOXJump to behavior

            Malware Analysis System Evasion:

            barindex
            Contains functionality to detect hardware virtualization (CPUID execution measurement)Show sources
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeCode function: 3_2_00C231D9 3_2_00C231D9
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeCode function: 3_2_00C233E3 3_2_00C233E3
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeCode function: 3_2_00C233FD 3_2_00C233FD
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeCode function: 3_2_00C2323A 3_2_00C2323A
            Detected RDTSC dummy instruction sequence (likely for instruction hammering)Show sources
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeRDTSC instruction interceptor: First address: 00000000022B1C7E second address: 00000000022B1CBD instructions: 0x00000000 rdtsc 0x00000002 mov eax, 00000001h 0x00000007 cpuid 0x00000009 popad 0x0000000a push ecx 0x0000000b test ax, cx 0x0000000e test dl, 00000017h 0x00000011 call 00007F21FCFA4CE6h 0x00000016 call 00007F21FCFA4CD8h 0x0000001b lfence 0x0000001e mov edx, dword ptr [7FFE0014h] 0x00000024 lfence 0x00000027 ret 0x00000028 mov esi, edx 0x0000002a pushad 0x0000002b rdtsc
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeRDTSC instruction interceptor: First address: 00000000022B1CBD second address: 00000000022B1CBD instructions: 0x00000000 rdtsc 0x00000002 xor eax, eax 0x00000004 inc eax 0x00000005 cpuid 0x00000007 popad 0x00000008 call 00007F21FCF9DB48h 0x0000000d lfence 0x00000010 mov edx, dword ptr [7FFE0014h] 0x00000016 lfence 0x00000019 ret 0x0000001a sub edx, esi 0x0000001c ret 0x0000001d pop ecx 0x0000001e add edi, edx 0x00000020 test eax, eax 0x00000022 dec ecx 0x00000023 cmp bh, bh 0x00000025 cmp ecx, 00000000h 0x00000028 jne 00007F21FCF9DB1Eh 0x0000002a pushad 0x0000002b nop 0x0000002c nop 0x0000002d mov eax, 00000001h 0x00000032 cpuid 0x00000034 popad 0x00000035 push ecx 0x00000036 test ax, cx 0x00000039 test dl, 00000017h 0x0000003c call 00007F21FCF9DB66h 0x00000041 call 00007F21FCF9DB58h 0x00000046 lfence 0x00000049 mov edx, dword ptr [7FFE0014h] 0x0000004f lfence 0x00000052 ret 0x00000053 mov esi, edx 0x00000055 pushad 0x00000056 rdtsc
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeRDTSC instruction interceptor: First address: 00000000022B347F second address: 00000000022B347F instructions:
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeRDTSC instruction interceptor: First address: 0000000000C233C1 second address: 0000000000C233C1 instructions:
            Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)Show sources
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeWMI Queries: IWbemServices::CreateInstanceEnum - root\cimv2 : Win32_BaseBoard
            Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)Show sources
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeWMI Queries: IWbemServices::CreateInstanceEnum - root\cimv2 : Win32_NetworkAdapterConfiguration
            Tries to detect Any.runShow sources
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeFile opened: C:\Program Files\Qemu-ga\qemu-ga.exeJump to behavior
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeFile opened: C:\Program Files\qga\qga.exeJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeFile opened: C:\Program Files\Qemu-ga\qemu-ga.exeJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeFile opened: C:\Program Files\qga\qga.exeJump to behavior
            Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)Show sources
            Source: RegAsm.exe, 00000003.00000002.491326318.0000000000C21000.00000040.00000001.sdmpBinary or memory string: C:\PROGRAM FILES\QEMU-GA\QEMU-GA.EXE8
            Source: RegAsm.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\faktura_ODfk0021.exeRDTSC instruction interceptor: First address: 00000000022B1C7E second address: 00000000022B1CBD instructions: 0x00000000 rdtsc 0x00000002 mov eax, 00000001h 0x00000007 cpuid 0x00000009 popad 0x0000000a push ecx 0x0000000b test ax, cx 0x0000000e test dl, 00000017h 0x00000011 call 00007F21FCFA4CE6h 0x00000016 call 00007F21FCFA4CD8h 0x0000001b lfence 0x0000001e mov edx, dword ptr [7FFE0014h] 0x00000024 lfence 0x00000027 ret 0x00000028 mov esi, edx 0x0000002a pushad 0x0000002b rdtsc
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeRDTSC instruction interceptor: First address: 00000000022B1CBD second address: 00000000022B1CBD instructions: 0x00000000 rdtsc 0x00000002 xor eax, eax 0x00000004 inc eax 0x00000005 cpuid 0x00000007 popad 0x00000008 call 00007F21FCF9DB48h 0x0000000d lfence 0x00000010 mov edx, dword ptr [7FFE0014h] 0x00000016 lfence 0x00000019 ret 0x0000001a sub edx, esi 0x0000001c ret 0x0000001d pop ecx 0x0000001e add edi, edx 0x00000020 test eax, eax 0x00000022 dec ecx 0x00000023 cmp bh, bh 0x00000025 cmp ecx, 00000000h 0x00000028 jne 00007F21FCF9DB1Eh 0x0000002a pushad 0x0000002b nop 0x0000002c nop 0x0000002d mov eax, 00000001h 0x00000032 cpuid 0x00000034 popad 0x00000035 push ecx 0x00000036 test ax, cx 0x00000039 test dl, 00000017h 0x0000003c call 00007F21FCF9DB66h 0x00000041 call 00007F21FCF9DB58h 0x00000046 lfence 0x00000049 mov edx, dword ptr [7FFE0014h] 0x0000004f lfence 0x00000052 ret 0x00000053 mov esi, edx 0x00000055 pushad 0x00000056 rdtsc
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeRDTSC instruction interceptor: First address: 00000000022B1DAB second address: 00000000022B1DAB instructions: 0x00000000 rdtsc 0x00000002 lfence 0x00000005 shl edx, 20h 0x00000008 or edx, eax 0x0000000a ret 0x0000000b mov esi, edx 0x0000000d pushad 0x0000000e xor eax, eax 0x00000010 inc eax 0x00000011 cpuid 0x00000013 bt ecx, 1Fh 0x00000017 jc 00007F21FCFA60E7h 0x0000001d popad 0x0000001e call 00007F21FCFA4CDAh 0x00000023 lfence 0x00000026 rdtsc
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeRDTSC instruction interceptor: First address: 00000000022B347F second address: 00000000022B347F instructions:
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeRDTSC instruction interceptor: First address: 0000000000C21DAB second address: 0000000000C21DAB instructions: 0x00000000 rdtsc 0x00000002 lfence 0x00000005 shl edx, 20h 0x00000008 or edx, eax 0x0000000a ret 0x0000000b mov esi, edx 0x0000000d pushad 0x0000000e xor eax, eax 0x00000010 inc eax 0x00000011 cpuid 0x00000013 bt ecx, 1Fh 0x00000017 jc 00007F21FCFA60E7h 0x0000001d popad 0x0000001e call 00007F21FCFA4CDAh 0x00000023 lfence 0x00000026 rdtsc
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeRDTSC instruction interceptor: First address: 0000000000C233C1 second address: 0000000000C233C1 instructions:
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeCode function: 3_2_00C216D0 rdtsc 3_2_00C216D0
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeThread delayed: delay time: 922337203685477Jump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeWindow / User API: threadDelayed 3333Jump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeWindow / User API: threadDelayed 6505Jump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe TID: 6196Thread sleep time: -23980767295822402s >= -30000sJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeWMI Queries: IWbemServices::CreateInstanceEnum - root\cimv2 : Win32_Processor
            Source: C:\Windows\System32\conhost.exeLast function: Thread delayed
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeThread delayed: delay time: 922337203685477Jump to behavior
            Source: RegAsm.exe, 00000003.00000002.491326318.0000000000C21000.00000040.00000001.sdmpBinary or memory string: C:\Program Files\Qemu-ga\qemu-ga.exe8
            Source: RegAsm.exe, 00000003.00000002.491917908.0000000000FE7000.00000004.00000020.sdmpBinary or memory string: Hyper-V RAW
            Source: RegAsm.exeBinary or memory string: C:\Program Files\Qemu-ga\qemu-ga.exe
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess information queried: ProcessInformationJump to behavior

            Anti Debugging:

            barindex
            Hides threads from debuggersShow sources
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeThread information set: HideFromDebuggerJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeThread information set: HideFromDebuggerJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeThread information set: HideFromDebuggerJump to behavior
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeProcess queried: DebugPortJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess queried: DebugPortJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeCode function: 3_2_00C216D0 rdtsc 3_2_00C216D0
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeCode function: 3_2_00C233E3 mov eax, dword ptr fs:[00000030h]3_2_00C233E3
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeCode function: 3_2_00C21BF5 mov eax, dword ptr fs:[00000030h]3_2_00C21BF5
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeCode function: 3_2_00C233FD mov eax, dword ptr fs:[00000030h]3_2_00C233FD
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeCode function: 3_2_00C22FBC mov eax, dword ptr fs:[00000030h]3_2_00C22FBC
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeCode function: 3_2_00C22D7E mov eax, dword ptr fs:[00000030h]3_2_00C22D7E
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeProcess token adjusted: DebugJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeMemory allocated: page read and write | page guardJump to behavior

            HIPS / PFW / Operating System Protection Evasion:

            barindex
            Writes to foreign memory regionsShow sources
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeMemory written: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe base: C20000Jump to behavior
            Source: C:\Users\user\Desktop\faktura_ODfk0021.exeProcess created: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe 'C:\Users\user\Desktop\faktura_ODfk0021.exe' Jump to behavior
            Source: RegAsm.exe, 00000003.00000002.492429654.0000000001420000.00000002.00000001.sdmpBinary or memory string: uProgram Manager
            Source: RegAsm.exe, 00000003.00000002.492429654.0000000001420000.00000002.00000001.sdmpBinary or memory string: Shell_TrayWnd
            Source: RegAsm.exe, 00000003.00000002.492429654.0000000001420000.00000002.00000001.sdmpBinary or memory string: Progman
            Source: RegAsm.exe, 00000003.00000002.492429654.0000000001420000.00000002.00000001.sdmpBinary or memory string: Progmanlock
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeCode function: 3_2_00C23314 cpuid 3_2_00C23314
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeQueries volume information: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe VolumeInformationJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeQueries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.Windows.Forms\v4.0_4.0.0.0__b77a5c561934e089\System.Windows.Forms.dll VolumeInformationJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeQueries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\Microsoft.VisualBasic\v4.0_10.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualBasic.dll VolumeInformationJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeQueries volume information: C:\Windows\Microsoft.NET\assembly\GAC_32\CustomMarshalers\v4.0_4.0.0.0__b03f5f7f11d50a3a\CustomMarshalers.dll VolumeInformationJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeQueries volume information: C:\Windows\Microsoft.NET\assembly\GAC_32\CustomMarshalers\v4.0_4.0.0.0__b03f5f7f11d50a3a\CustomMarshalers.dll VolumeInformationJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeQueries volume information: C:\Windows\Microsoft.NET\assembly\GAC_32\CustomMarshalers\v4.0_4.0.0.0__b03f5f7f11d50a3a\CustomMarshalers.dll VolumeInformationJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeQueries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.Management\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Management.dll VolumeInformationJump to behavior
            Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeKey value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography MachineGuidJump to behavior

            Stealing of Sensitive Information:

            barindex
            Yara detected AgentTeslaShow sources
            Source: Yara matchFile source: 00000003.00000002.499283716.000000001DA11000.00000004.00000001.sdmp, type: MEMORY
            Source: Yara matchFile source: Process Memory Space: RegAsm.exe PID: 6328, type: MEMORY
            Source: Yara matchFile source: 00000003.00000002.499283716.000000001DA11000.00000004.00000001.sdmp, type: MEMORY
            Source: Yara matchFile source: Process Memory Space: RegAsm.exe PID: 6328, type: MEMORY

            Remote Access Functionality:

            barindex
            Yara detected AgentTeslaShow sources
            Source: Yara matchFile source: 00000003.00000002.499283716.000000001DA11000.00000004.00000001.sdmp, type: MEMORY
            Source: Yara matchFile source: Process Memory Space: RegAsm.exe PID: 6328, type: MEMORY

            Mitre Att&ck Matrix

            Initial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionExfiltrationCommand and ControlNetwork EffectsRemote Service EffectsImpact
            Valid AccountsWindows Management Instrumentation211DLL Side-Loading1Process Injection112Disable or Modify Tools1OS Credential DumpingSecurity Software Discovery731Remote ServicesArchive Collected Data1Exfiltration Over Other Network MediumEncrypted Channel12Eavesdrop on Insecure Network CommunicationRemotely Track Device Without AuthorizationModify System Partition
            Default AccountsScheduled Task/JobBoot or Logon Initialization ScriptsDLL Side-Loading1Virtualization/Sandbox Evasion341LSASS MemoryProcess Discovery2Remote Desktop ProtocolData from Removable MediaExfiltration Over BluetoothNon-Application Layer Protocol1Exploit SS7 to Redirect Phone Calls/SMSRemotely Wipe Data Without AuthorizationDevice Lockout
            Domain AccountsAt (Linux)Logon Script (Windows)Logon Script (Windows)Process Injection112Security Account ManagerVirtualization/Sandbox Evasion341SMB/Windows Admin SharesData from Network Shared DriveAutomated ExfiltrationApplication Layer Protocol12Exploit SS7 to Track Device LocationObtain Device Cloud BackupsDelete Device Data
            Local AccountsAt (Windows)Logon Script (Mac)Logon Script (Mac)Obfuscated Files or Information1NTDSApplication Window Discovery1Distributed Component Object ModelInput CaptureScheduled TransferProtocol ImpersonationSIM Card SwapCarrier Billing Fraud
            Cloud AccountsCronNetwork Logon ScriptNetwork Logon ScriptDLL Side-Loading1LSA SecretsRemote System Discovery1SSHKeyloggingData Transfer Size LimitsFallback ChannelsManipulate Device CommunicationManipulate App Store Rankings or Ratings
            Replication Through Removable MediaLaunchdRc.commonRc.commonSteganographyCached Domain CredentialsSystem Information Discovery423VNCGUI Input CaptureExfiltration Over C2 ChannelMultiband CommunicationJamming or Denial of ServiceAbuse Accessibility Features

            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