Analysis Report GUEROLA INDUSTRIES N#U00ba de cuenta.exe

Overview

General Information

Sample Name: GUEROLA INDUSTRIES N#U00ba de cuenta.exe
Analysis ID: 356269
MD5: 9bca56d197da87e223e660316b3a48a0
SHA1: 1950233071e9942921e9238bdf5c68c01182158c
SHA256: d30d1ebb4f2b3e74d4bef8630c51514337ce4f59fe393bc978534a5bdb06a1c2
Tags: ESPexegeoGuLoader

Most interesting Screenshot:

Detection

AgentTesla GuLoader
Score: 88
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Yara detected AgentTesla
Yara detected GuLoader
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
Abnormal high CPU Usage
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
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

Compliance:

barindex
Uses 32bit PE files
Source: GUEROLA INDUSTRIES N#U00ba de cuenta.exe Static PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
Uses secure TLS version for HTTPS connections
Source: unknown HTTPS traffic detected: 142.250.186.33:443 -> 192.168.2.4:49746 version: TLS 1.2

Networking:

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JA3 SSL client fingerprint seen in connection with other malware
Source: Joe Sandbox View JA3 fingerprint: 37f463bf4616ecd445d4a1937da06e19
Source: unknown DNS traffic detected: queries for: doc-14-9s-docs.googleusercontent.com
Source: RegAsm.exe, 00000008.00000002.911956982.000000001DCC1000.00000004.00000001.sdmp String found in binary or memory: http://127.0.0.1:HTTP/1.1
Source: RegAsm.exe, 00000008.00000002.911956982.000000001DCC1000.00000004.00000001.sdmp String found in binary or memory: http://DynDns.comDynDNS
Source: RegAsm.exe, 00000008.00000002.911956982.000000001DCC1000.00000004.00000001.sdmp String found in binary or memory: http://MXXVzU.com
Source: RegAsm.exe, 00000008.00000002.908466549.00000000015BD000.00000004.00000020.sdmp String found in binary or memory: http://crl.globalsign.net/root-r2.crl0
Source: RegAsm.exe, 00000008.00000002.908488503.00000000015E5000.00000004.00000020.sdmp String found in binary or memory: http://crl.pki.goog/GTS1O
Source: RegAsm.exe, 00000008.00000002.908466549.00000000015BD000.00000004.00000020.sdmp String found in binary or memory: http://crl.pki.goog/GTS1O1core.crl0
Source: RegAsm.exe, 00000008.00000002.908466549.00000000015BD000.00000004.00000020.sdmp String found in binary or memory: http://crl.pki.goog/gsr2/gsr2.crl0?
Source: RegAsm.exe, 00000008.00000002.908466549.00000000015BD000.00000004.00000020.sdmp String found in binary or memory: http://ocsp.pki.goog/gsr202
Source: RegAsm.exe, 00000008.00000002.908466549.00000000015BD000.00000004.00000020.sdmp String found in binary or memory: http://ocsp.pki.goog/gts1o1core0
Source: RegAsm.exe, 00000008.00000002.908466549.00000000015BD000.00000004.00000020.sdmp String found in binary or memory: http://pki.goog/gsr2/GTS1O1.crt0
Source: RegAsm.exe, 00000008.00000002.908466549.00000000015BD000.00000004.00000020.sdmp String found in binary or memory: https://csp.withgoogle.com/csp/d
Source: RegAsm.exe, 00000008.00000002.908427204.000000000159F000.00000004.00000020.sdmp String found in binary or memory: https://csp.withgoogle.com/csp/drive-explorer/
Source: RegAsm.exe, 00000008.00000002.908256124.000000000154B000.00000004.00000020.sdmp String found in binary or memory: https://doc-14-9s-docs.googleusercontent.com/
Source: RegAsm.exe, 00000008.00000002.908256124.000000000154B000.00000004.00000020.sdmp String found in binary or memory: https://doc-14-9s-docs.googleusercontent.com/U
Source: RegAsm.exe, 00000008.00000002.908427204.000000000159F000.00000004.00000020.sdmp, RegAsm.exe, 00000008.00000002.908520125.00000000015FA000.00000004.00000020.sdmp, RegAsm.exe, 00000008.00000002.908488503.00000000015E5000.00000004.00000020.sdmp String found in binary or memory: https://doc-14-9s-docs.googleusercontent.com/docs/securesc/5ncffemq1843clkn140nheko96l7akee/3e4j78eu
Source: RegAsm.exe, 00000008.00000002.908427204.000000000159F000.00000004.00000020.sdmp String found in binary or memory: https://docs.google.com/-
Source: RegAsm.exe, 00000008.00000002.908466549.00000000015BD000.00000004.00000020.sdmp String found in binary or memory: https://docs.google.com/nonceSigner?nonce=2faifmm8htnpk&continue=https://doc-14-9s-docs.googleuserco
Source: RegAsm.exe, 00000008.00000002.908256124.000000000154B000.00000004.00000020.sdmp String found in binary or memory: https://docs.google.com/p(
Source: RegAsm.exe, 00000008.00000002.908256124.000000000154B000.00000004.00000020.sdmp String found in binary or memory: https://drive.google.com/
Source: RegAsm.exe, 00000008.00000002.908256124.000000000154B000.00000004.00000020.sdmp String found in binary or memory: https://drive.google.com/X(C
Source: RegAsm.exe String found in binary or memory: https://drive.google.com/uc?export=download&id=1FAdfOdC9S1Rm2i8mXb_LPE-7X5DxuIBp
Source: RegAsm.exe, 00000008.00000002.908466549.00000000015BD000.00000004.00000020.sdmp String found in binary or memory: https://pki.goog/repository/0
Source: RegAsm.exe, 00000008.00000002.911956982.000000001DCC1000.00000004.00000001.sdmp String 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: unknown Network traffic detected: HTTP traffic on port 49746 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 443 -> 49746
Source: unknown HTTPS traffic detected: 142.250.186.33:443 -> 192.168.2.4:49746 version: TLS 1.2

System Summary:

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Abnormal high CPU Usage
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe Process Stats: CPU usage > 98%
Contains functionality to call native functions
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Code function: 8_2_0120548D NtProtectVirtualMemory, 8_2_0120548D
Detected potential crypto function
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe Code function: 0_2_00401E3C 0_2_00401E3C
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe Code function: 0_2_00401860 0_2_00401860
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe Code function: 0_2_00401813 0_2_00401813
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe Code function: 0_2_00401624 0_2_00401624
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Code function: 8_2_1DB647A0 8_2_1DB647A0
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Code function: 8_2_1DB64773 8_2_1DB64773
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Code function: 8_2_1DB6477D 8_2_1DB6477D
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Code function: 8_2_1DB6475D 8_2_1DB6475D
Sample file is different than original file name gathered from version info
Source: GUEROLA INDUSTRIES N#U00ba de cuenta.exe, 00000000.00000002.778980538.0000000000412000.00000002.00020000.sdmp Binary or memory string: OriginalFilenameLONDRES.exe vs GUEROLA INDUSTRIES N#U00ba de cuenta.exe
Source: GUEROLA INDUSTRIES N#U00ba de cuenta.exe Binary or memory string: OriginalFilenameLONDRES.exe vs GUEROLA INDUSTRIES N#U00ba de cuenta.exe
Tries to load missing DLLs
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Section loaded: sfc.dll Jump to behavior
Uses 32bit PE files
Source: GUEROLA INDUSTRIES N#U00ba de cuenta.exe Static PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
Source: classification engine Classification label: mal88.troj.evad.winEXE@4/0@1/1
Source: C:\Windows\System32\conhost.exe Mutant created: \Sessions\1\BaseNamedObjects\Local\SM0:5044:120:WilError_01
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe File created: C:\Users\user\AppData\Local\Temp\~DF8817D1ABED282CF3.TMP Jump to behavior
Source: GUEROLA INDUSTRIES N#U00ba de cuenta.exe Static PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe Section loaded: C:\Windows\SysWOW64\msvbvm60.dll Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Section loaded: C:\Windows\assembly\NativeImages_v4.0.30319_32\mscorlib\a152fe02a317a77aeee36903305e8ba6\mscorlib.ni.dll Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe WMI Queries: IWbemServices::CreateInstanceEnum - root\cimv2 : Win32_Processor
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe File read: C:\Windows\System32\drivers\etc\hosts Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe File read: C:\Windows\System32\drivers\etc\hosts Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe File read: C:\Windows\System32\drivers\etc\hosts Jump to behavior
Source: unknown Process created: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe 'C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe'
Source: unknown Process created: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe 'C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe'
Source: unknown Process created: C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe Process created: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe 'C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe' Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CF4CC405-E2C5-4DDD-B3CE-5E7582D8C9FA}\InprocServer32 Jump to behavior
Source: Window Recorder Window detected: More than 3 window changes detected

Data Obfuscation:

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Yara detected GuLoader
Source: Yara match File source: 00000008.00000002.908051944.0000000001201000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: RegAsm.exe PID: 3296, type: MEMORY
Uses code obfuscation techniques (call, push, ret)
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe Code function: 0_2_004066A0 pushfd ; iretd 0_2_00406733
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe Code function: 0_2_00404345 push ss; ret 0_2_0040434B
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe Code function: 0_2_0040414B pushad ; iretd 0_2_00404166
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe Code function: 0_2_00405760 push ds; ret 0_2_0040576F
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe Code function: 0_2_004091F9 push cs; ret 0_2_0040920C
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe Code function: 0_2_00403FA1 push edx; iretd 0_2_00403FA2
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe Code function: 0_2_022543A5 push eax; retf 0_2_022543B2
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\conhost.exe Process information set: NOOPENFILEERRORBOX Jump to behavior

Malware Analysis System Evasion:

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Detected RDTSC dummy instruction sequence (likely for instruction hammering)
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe RDTSC instruction interceptor: First address: 0000000002252701 second address: 0000000002252701 instructions: 0x00000000 rdtsc 0x00000002 xor eax, eax 0x00000004 inc eax 0x00000005 cpuid 0x00000007 popad 0x00000008 call 00007F9C58D19D38h 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 dec ecx 0x00000021 cmp ecx, 00000000h 0x00000024 jne 00007F9C58D19D23h 0x00000026 push ecx 0x00000027 call 00007F9C58D19D5Ch 0x0000002c call 00007F9C58D19D48h 0x00000031 lfence 0x00000034 mov edx, dword ptr [7FFE0014h] 0x0000003a lfence 0x0000003d ret 0x0000003e mov esi, edx 0x00000040 pushad 0x00000041 rdtsc
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe RDTSC instruction interceptor: First address: 00000000022521C6 second address: 00000000022521C6 instructions:
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe WMI Queries: IWbemServices::CreateInstanceEnum - root\cimv2 : Win32_BaseBoard
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe WMI Queries: IWbemServices::CreateInstanceEnum - root\cimv2 : Win32_NetworkAdapterConfiguration
Tries to detect Any.run
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe File opened: C:\Program Files\Qemu-ga\qemu-ga.exe Jump to behavior
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe File opened: C:\Program Files\qga\qga.exe Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe File opened: C:\Program Files\Qemu-ga\qemu-ga.exe Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe File opened: C:\Program Files\qga\qga.exe Jump to behavior
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Source: RegAsm.exe, 00000008.00000002.908256124.000000000154B000.00000004.00000020.sdmp Binary or memory string: ROGRAM FILES\QEMU-GA\QEMU-GA.EXE
Source: RegAsm.exe Binary or memory string: C:\PROGRAM FILES\QEMU-GA\QEMU-GA.EXE
Tries to detect virtualization through RDTSC time measurements
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe RDTSC instruction interceptor: First address: 0000000002252701 second address: 0000000002252701 instructions: 0x00000000 rdtsc 0x00000002 xor eax, eax 0x00000004 inc eax 0x00000005 cpuid 0x00000007 popad 0x00000008 call 00007F9C58D19D38h 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 dec ecx 0x00000021 cmp ecx, 00000000h 0x00000024 jne 00007F9C58D19D23h 0x00000026 push ecx 0x00000027 call 00007F9C58D19D5Ch 0x0000002c call 00007F9C58D19D48h 0x00000031 lfence 0x00000034 mov edx, dword ptr [7FFE0014h] 0x0000003a lfence 0x0000003d ret 0x0000003e mov esi, edx 0x00000040 pushad 0x00000041 rdtsc
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe RDTSC instruction interceptor: First address: 00000000022528CB second address: 00000000022528CB 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 00007F9C58D26F22h 0x0000001d popad 0x0000001e call 00007F9C58D24B91h 0x00000023 lfence 0x00000026 rdtsc
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe RDTSC instruction interceptor: First address: 00000000022521C6 second address: 00000000022521C6 instructions:
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe RDTSC instruction interceptor: First address: 00000000012028CB second address: 00000000012028CB 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 00007F9C58D26F22h 0x0000001d popad 0x0000001e call 00007F9C58D24B91h 0x00000023 lfence 0x00000026 rdtsc
Contains functionality for execution timing, often used to detect debuggers
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Code function: 8_2_01203B31 rdtsc 8_2_01203B31
Contains long sleeps (>= 3 min)
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Thread delayed: delay time: 922337203685477 Jump to behavior
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Window / User API: threadDelayed 1985 Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Window / User API: threadDelayed 7837 Jump to behavior
May sleep (evasive loops) to hinder dynamic analysis
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe TID: 6960 Thread sleep time: -23058430092136925s >= -30000s Jump to behavior
Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe WMI Queries: IWbemServices::CreateInstanceEnum - root\cimv2 : Win32_Processor
Sample execution stops while process was sleeping (likely an evasion)
Source: C:\Windows\System32\conhost.exe Last function: Thread delayed
Source: RegAsm.exe, 00000008.00000002.908256124.000000000154B000.00000004.00000020.sdmp Binary or memory string: rogram Files\Qemu-ga\qemu-ga.exe
Source: RegAsm.exe, 00000008.00000002.908427204.000000000159F000.00000004.00000020.sdmp Binary or memory string: Hyper-V RAW
Source: RegAsm.exe, 00000008.00000002.908256124.000000000154B000.00000004.00000020.sdmp Binary or memory string: Hyper-V RAWh
Source: RegAsm.exe Binary or memory string: C:\Program Files\Qemu-ga\qemu-ga.exe
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process information queried: ProcessInformation Jump to behavior

Anti Debugging:

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Hides threads from debuggers
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe Thread information set: HideFromDebugger Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Thread information set: HideFromDebugger Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Thread information set: HideFromDebugger Jump to behavior
Checks if the current process is being debugged
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe Process queried: DebugPort Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process queried: DebugPort Jump to behavior
Contains functionality for execution timing, often used to detect debuggers
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Code function: 8_2_01203B31 rdtsc 8_2_01203B31
Contains functionality to read the PEB
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Code function: 8_2_01204124 mov eax, dword ptr fs:[00000030h] 8_2_01204124
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Code function: 8_2_01204962 mov eax, dword ptr fs:[00000030h] 8_2_01204962
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Code function: 8_2_012025A8 mov eax, dword ptr fs:[00000030h] 8_2_012025A8
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Code function: 8_2_0120505C mov eax, dword ptr fs:[00000030h] 8_2_0120505C
Enables debug privileges
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Process token adjusted: Debug Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Memory allocated: page read and write | page guard Jump to behavior

HIPS / PFW / Operating System Protection Evasion:

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Writes to foreign memory regions
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe Memory written: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe base: 1200000 Jump to behavior
Creates a process in suspended mode (likely to inject code)
Source: C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe Process created: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe 'C:\Users\user\Desktop\GUEROLA INDUSTRIES N#U00ba de cuenta.exe' Jump to behavior
Source: RegAsm.exe, 00000008.00000002.908708154.0000000001BD0000.00000002.00000001.sdmp Binary or memory string: Program Manager
Source: RegAsm.exe, 00000008.00000002.908708154.0000000001BD0000.00000002.00000001.sdmp Binary or memory string: Shell_TrayWnd
Source: RegAsm.exe, 00000008.00000002.908708154.0000000001BD0000.00000002.00000001.sdmp Binary or memory string: Progman
Source: RegAsm.exe, 00000008.00000002.908708154.0000000001BD0000.00000002.00000001.sdmp Binary or memory string: Progmanlock

Language, Device and Operating System Detection:

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Contains functionality to query CPU information (cpuid)
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Code function: 8_2_01204EF6 cpuid 8_2_01204EF6
Queries the volume information (name, serial number etc) of a device
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Queries volume information: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe VolumeInformation Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.Windows.Forms\v4.0_4.0.0.0__b77a5c561934e089\System.Windows.Forms.dll VolumeInformation Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\Microsoft.VisualBasic\v4.0_10.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualBasic.dll VolumeInformation Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_32\CustomMarshalers\v4.0_4.0.0.0__b03f5f7f11d50a3a\CustomMarshalers.dll VolumeInformation Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_32\CustomMarshalers\v4.0_4.0.0.0__b03f5f7f11d50a3a\CustomMarshalers.dll VolumeInformation Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_32\CustomMarshalers\v4.0_4.0.0.0__b03f5f7f11d50a3a\CustomMarshalers.dll VolumeInformation Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.Management\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Management.dll VolumeInformation Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography MachineGuid Jump to behavior

Stealing of Sensitive Information:

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Yara detected AgentTesla
Source: Yara match File source: 00000008.00000002.911956982.000000001DCC1000.00000004.00000001.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: RegAsm.exe PID: 3296, type: MEMORY
Yara detected Credential Stealer
Source: Yara match File source: 00000008.00000002.911956982.000000001DCC1000.00000004.00000001.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: RegAsm.exe PID: 3296, type: MEMORY

Remote Access Functionality:

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Yara detected AgentTesla
Source: Yara match File source: 00000008.00000002.911956982.000000001DCC1000.00000004.00000001.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: RegAsm.exe PID: 3296, type: MEMORY
windows-stand
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
behaviorgraph top1 signatures2 2 Behavior Graph ID: 356269 Sample: GUEROLA INDUSTRIES N#U00ba ... Startdate: 22/02/2021 Architecture: WINDOWS Score: 88 20 Yara detected GuLoader 2->20 22 Yara detected AgentTesla 2->22 24 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 2->24 26 2 other signatures 2->26 7 GUEROLA INDUSTRIES N#U00ba de cuenta.exe 1 1 2->7         started        process3 signatures4 28 Writes to foreign memory regions 7->28 30 Tries to detect Any.run 7->30 32 Hides threads from debuggers 7->32 10 RegAsm.exe 9 7->10         started        process5 dnsIp6 16 googlehosted.l.googleusercontent.com 142.250.186.33, 443, 49746 GOOGLEUS United States 10->16 18 doc-14-9s-docs.googleusercontent.com 10->18 34 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 10->34 36 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 10->36 38 Tries to detect Any.run 10->38 40 2 other signatures 10->40 14 conhost.exe 10->14         started        signatures7 process8
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs

Contacted Public IPs

IP Domain Country Flag ASN ASN Name Malicious
142.250.186.33
 unknown United States
15169 GOOGLEUS false

Contacted Domains

Name IP Active
googlehosted.l.googleusercontent.com 142.250.186.33 true
doc-14-9s-docs.googleusercontent.com unknown unknown