Analysis Report caraganas.exe

Overview

General Information

Sample Name: caraganas.exe
Analysis ID: 358114
MD5: 99d875ac3341453383c9105669e14538
SHA1: c459b8df634dc70ea2537d9588eeeb3d2b644d94
SHA256: 98bbdc74c1ff5407450d9019407d2012a08075269228497f10b9bf6e6471de42
Tags: exeGuLoader
Infos:

Most interesting Screenshot:

Detection

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

Signatures

Found malware configuration
Multi AV Scanner detection for submitted file
Yara detected AgentTesla
Yara detected GuLoader
C2 URLs / IPs found in malware configuration
Detected RDTSC dummy instruction sequence (likely for instruction hammering)
Found evasive API chain (trying to detect sleep duration tampering with parallel thread)
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
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to steal Mail credentials (via file access)
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 access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to call native functions
Contains functionality to read the PEB
Contains long sleeps (>= 3 min)
Creates a DirectInput object (often for capturing keystrokes)
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)
IP address seen in connection with other malware
JA3 SSL client fingerprint seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
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)
Tries to load missing DLLs
Uses 32bit PE files
Uses code obfuscation techniques (call, push, ret)
Yara detected Credential Stealer

Classification

AV Detection:

barindex
Found malware configuration
Source: RegAsm.exe.2916.6.memstr Malware Configuration Extractor: Agenttesla {"Username: ": "Q2TP9tlm", "URL: ": "http://8vV1Qxo32XjttpL.org", "To: ": "rzKGV@ahwhW.com", "ByHost: ": "mail.jesmar.net:587", "Password: ": "0s0uxNrAPxOSN", "From: ": "info@jesmar.net"}
Multi AV Scanner detection for submitted file
Source: caraganas.exe Metadefender: Detection: 18% Perma Link
Source: caraganas.exe ReversingLabs: Detection: 10%

Compliance:

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Uses 32bit PE files
Source: caraganas.exe Static PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
Uses new MSVCR Dlls
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe File opened: C:\Windows\WinSxS\x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.9445_none_d08c58b4442ba54f\MSVCR80.dll Jump to behavior
Uses secure TLS version for HTTPS connections
Source: unknown HTTPS traffic detected: 142.250.186.33:443 -> 192.168.2.6:49731 version: TLS 1.2
Binary contains paths to debug symbols
Source: Binary string: mscorrc.pdb source: RegAsm.exe, 00000006.00000002.603402260.0000000020130000.00000002.00000001.sdmp

Networking:

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C2 URLs / IPs found in malware configuration
Source: Malware configuration extractor URLs: http://8vV1Qxo32XjttpL.org
IP address seen in connection with other malware
Source: Joe Sandbox View IP Address: 142.250.186.33 142.250.186.33
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-08-58-docs.googleusercontent.com
Source: RegAsm.exe, 00000006.00000002.601350930.000000001D7E1000.00000004.00000001.sdmp String found in binary or memory: http://127.0.0.1:HTTP/1.1
Source: RegAsm.exe, 00000006.00000002.601670799.000000001D905000.00000004.00000001.sdmp, RegAsm.exe, 00000006.00000002.601708769.000000001D916000.00000004.00000001.sdmp String found in binary or memory: http://8vV1Qxo32XjttpL.org
Source: RegAsm.exe, 00000006.00000002.601350930.000000001D7E1000.00000004.00000001.sdmp String found in binary or memory: http://DPtQpK.com
Source: RegAsm.exe, 00000006.00000002.601350930.000000001D7E1000.00000004.00000001.sdmp String found in binary or memory: http://DynDns.comDynDNS
Source: RegAsm.exe, 00000006.00000002.601670799.000000001D905000.00000004.00000001.sdmp String found in binary or memory: http://apps.identrust.com/roots/dstrootcax3.p7c0
Source: RegAsm.exe, 00000006.00000002.601670799.000000001D905000.00000004.00000001.sdmp String found in binary or memory: http://cps.letsencrypt.org0
Source: RegAsm.exe, 00000006.00000002.601670799.000000001D905000.00000004.00000001.sdmp String found in binary or memory: http://cps.root-x1.letsencrypt.org0
Source: RegAsm.exe, 00000006.00000002.601670799.000000001D905000.00000004.00000001.sdmp String found in binary or memory: http://crl.identrust.com/DSTROOTCAX3CRL.crl0
Source: RegAsm.exe, 00000006.00000002.601670799.000000001D905000.00000004.00000001.sdmp String found in binary or memory: http://r3.i.lencr.org/06
Source: RegAsm.exe, 00000006.00000002.601670799.000000001D905000.00000004.00000001.sdmp String found in binary or memory: http://r3.o.lencr.org0
Source: RegAsm.exe String found in binary or memory: https://drive.google.com/uc?export=download&id=1QhM38kCW0J9xSmyfm4mPT5q5H_nh_JiH
Source: RegAsm.exe, 00000006.00000002.601350930.000000001D7E1000.00000004.00000001.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 443 -> 49731
Source: unknown Network traffic detected: HTTP traffic on port 49731 -> 443
Source: unknown HTTPS traffic detected: 142.250.186.33:443 -> 192.168.2.6:49731 version: TLS 1.2

Key, Mouse, Clipboard, Microphone and Screen Capturing:

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Creates a DirectInput object (often for capturing keystrokes)
Source: caraganas.exe, 00000001.00000002.412969250.000000000073A000.00000004.00000020.sdmp Binary or memory string: <HOOK MODULE="DDRAW.DLL" FUNCTION="DirectDrawCreateEx"/>

System Summary:

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Contains functionality to call native functions
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B05543 NtProtectVirtualMemory, 6_2_00B05543
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B0592A NtSetInformationThread, 6_2_00B0592A
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B059BB NtSetInformationThread, 6_2_00B059BB
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B05ABA NtSetInformationThread, 6_2_00B05ABA
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B05A96 NtSetInformationThread, 6_2_00B05A96
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B05AFB NtSetInformationThread, 6_2_00B05AFB
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B05AC5 NtSetInformationThread, 6_2_00B05AC5
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B05A0B NtSetInformationThread, 6_2_00B05A0B
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B05A7E NtSetInformationThread, 6_2_00B05A7E
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B05B96 NtSetInformationThread, 6_2_00B05B96
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B05B82 NtSetInformationThread, 6_2_00B05B82
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B05BCB NtSetInformationThread, 6_2_00B05BCB
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B05B12 NtSetInformationThread, 6_2_00B05B12
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B05B46 NtSetInformationThread, 6_2_00B05B46
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B05C2A NtSetInformationThread, 6_2_00B05C2A
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B05C5C NtSetInformationThread, 6_2_00B05C5C
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_1D5CB0BA NtQuerySystemInformation, 6_2_1D5CB0BA
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_1D5CB089 NtQuerySystemInformation, 6_2_1D5CB089
Detected potential crypto function
Source: C:\Users\user\Desktop\caraganas.exe Code function: 1_2_00401A36 1_2_00401A36
Source: C:\Users\user\Desktop\caraganas.exe Code function: 1_2_004019E9 1_2_004019E9
Source: C:\Users\user\Desktop\caraganas.exe Code function: 1_2_004017F6 1_2_004017F6
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00FAE1A8 6_2_00FAE1A8
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00FA75B0 6_2_00FA75B0
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00FAC9D3 6_2_00FAC9D3
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00FA1B00 6_2_00FA1B00
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00FAAE80 6_2_00FAAE80
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00FA1BD8 6_2_00FA1BD8
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_1F99ED18 6_2_1F99ED18
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_1F99A698 6_2_1F99A698
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_1F996840 6_2_1F996840
Tries to load missing DLLs
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Section loaded: sfc.dll Jump to behavior
Uses 32bit PE files
Source: caraganas.exe Static PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
Source: classification engine Classification label: mal100.troj.spyw.evad.winEXE@6/1@2/1
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_1D5CAF3E AdjustTokenPrivileges, 6_2_1D5CAF3E
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_1D5CAF07 AdjustTokenPrivileges, 6_2_1D5CAF07
Source: C:\Windows\System32\conhost.exe Mutant created: \Sessions\1\BaseNamedObjects\Local\SM0:4588:120:WilError_01
Source: C:\Users\user\Desktop\caraganas.exe File created: C:\Users\user\AppData\Local\Temp\~DFF94D9771C1CF7909.TMP Jump to behavior
Source: caraganas.exe Static PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
Source: C:\Users\user\Desktop\caraganas.exe Section loaded: C:\Windows\SysWOW64\msvbvm60.dll Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Section loaded: C:\Windows\assembly\NativeImages_v2.0.50727_32\mscorlib\9603718106bd57ecfbb18fefd769cab4\mscorlib.ni.dll Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Section loaded: C:\Windows\assembly\GAC_32\mscorlib\2.0.0.0__b77a5c561934e089\sorttbls.nlp Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Section loaded: C:\Windows\assembly\GAC_32\mscorlib\2.0.0.0__b77a5c561934e089\sortkey.nlp Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe WMI Queries: IWbemServices::CreateInstanceEnum - root\cimv2 : Win32_Processor
Source: C:\Users\user\Desktop\caraganas.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe File read: C:\Windows\System32\drivers\etc\hosts Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe File read: C:\Windows\System32\drivers\etc\hosts Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe File read: C:\Windows\System32\drivers\etc\hosts Jump to behavior
Source: caraganas.exe Metadefender: Detection: 18%
Source: caraganas.exe ReversingLabs: Detection: 10%
Source: unknown Process created: C:\Users\user\Desktop\caraganas.exe 'C:\Users\user\Desktop\caraganas.exe'
Source: unknown Process created: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe 'C:\Users\user\Desktop\caraganas.exe'
Source: unknown Process created: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe 'C:\Users\user\Desktop\caraganas.exe'
Source: unknown Process created: C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Source: C:\Users\user\Desktop\caraganas.exe Process created: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe 'C:\Users\user\Desktop\caraganas.exe' Jump to behavior
Source: C:\Users\user\Desktop\caraganas.exe Process created: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe 'C:\Users\user\Desktop\caraganas.exe' Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{72C24DD5-D70A-438B-8A42-98424B88AFB8}\InProcServer32 Jump to behavior
Source: Window Recorder Window detected: More than 3 window changes detected
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe File opened: C:\Windows\Microsoft.NET\Framework\v2.0.50727\mscorrc.dll Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Key opened: HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe File opened: C:\Windows\WinSxS\x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.9445_none_d08c58b4442ba54f\MSVCR80.dll Jump to behavior
Source: Binary string: mscorrc.pdb source: RegAsm.exe, 00000006.00000002.603402260.0000000020130000.00000002.00000001.sdmp

Data Obfuscation:

barindex
Yara detected GuLoader
Source: Yara match File source: 00000006.00000002.596328627.0000000000B01000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: RegAsm.exe PID: 2916, type: MEMORY
Uses code obfuscation techniques (call, push, ret)
Source: C:\Users\user\Desktop\caraganas.exe Code function: 1_2_00407A44 push edx; ret 1_2_00407A4B
Source: C:\Users\user\Desktop\caraganas.exe Code function: 1_2_0040AE39 push edi; retn 0004h 1_2_0040C0C1
Source: C:\Users\user\Desktop\caraganas.exe Code function: 1_2_0040BBD4 push edi; retn 0004h 1_2_0040C0C1
Source: C:\Users\user\Desktop\caraganas.exe Code function: 1_2_02324E49 push ebx; ret 1_2_02324E4A
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_1F997648 push ebx; ret 6_2_1F997672
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_1F99C643 push esp; iretd 6_2_1F99C649
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_1FFD41C9 push cs; retf 6_2_1FFD41DF
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_1FFD4155 push cs; retf 6_2_1FFD416B
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_1FFD40E1 push cs; retf 6_2_1FFD40F7

Hooking and other Techniques for Hiding and Protection:

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Monitors certain registry keys / values for changes (often done to protect autostart functionality)
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Registry key monitored for changes: HKEY_CURRENT_USER_Classes Jump to behavior
Source: C:\Users\user\Desktop\caraganas.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\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:

barindex
Detected RDTSC dummy instruction sequence (likely for instruction hammering)
Source: C:\Users\user\Desktop\caraganas.exe RDTSC instruction interceptor: First address: 0000000002320156 second address: 0000000002320156 instructions:
Source: C:\Users\user\Desktop\caraganas.exe RDTSC instruction interceptor: First address: 00000000023227B7 second address: 00000000023227B7 instructions: 0x00000000 rdtsc 0x00000002 xor eax, eax 0x00000004 inc eax 0x00000005 cpuid 0x00000007 popad 0x00000008 call 00007F0D5C842EE8h 0x0000000d lfence 0x00000010 mov edx, dword ptr [7FFE0014h] 0x00000016 lfence 0x00000019 ret 0x0000001a sub edx, esi 0x0000001c ret 0x0000001d pop ecx 0x0000001e test ch, ah 0x00000020 add edi, edx 0x00000022 dec ecx 0x00000023 cmp ecx, 00000000h 0x00000026 jne 00007F0D5C842ED1h 0x00000028 push ecx 0x00000029 call 00007F0D5C842F2Eh 0x0000002e call 00007F0D5C842EF8h 0x00000033 lfence 0x00000036 mov edx, dword ptr [7FFE0014h] 0x0000003c lfence 0x0000003f ret 0x00000040 mov esi, edx 0x00000042 pushad 0x00000043 rdtsc
Source: C:\Users\user\Desktop\caraganas.exe RDTSC instruction interceptor: First address: 000000000232310C second address: 000000000232310C instructions:
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe RDTSC instruction interceptor: First address: 0000000000B02E85 second address: 0000000000B02E85 instructions:
Found evasive API chain (trying to detect sleep duration tampering with parallel thread)
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Function Chain: threadDelayed,memAlloc,systemQueried,systemQueried,threadCreated,threadResumed,threadDelayed,threadDelayed,threadDelayed,systemQueried,systemQueried,systemQueried,threadDelayed,systemQueried,threadDelayed,threadDelayed,threadDelayed,memAlloc,threadDelayed,threadDelayed,threadDelayed,threadDelayed,systemQueried,threadDelayed,threadDelayed
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\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\v2.0.50727\RegAsm.exe WMI Queries: IWbemServices::CreateInstanceEnum - root\cimv2 : Win32_NetworkAdapterConfiguration
Tries to detect Any.run
Source: C:\Users\user\Desktop\caraganas.exe File opened: C:\Program Files\Qemu-ga\qemu-ga.exe Jump to behavior
Source: C:\Users\user\Desktop\caraganas.exe File opened: C:\Program Files\qga\qga.exe Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe File opened: C:\Program Files\Qemu-ga\qemu-ga.exe Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\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, 00000006.00000002.596328627.0000000000B01000.00000040.00000001.sdmp Binary or memory string: C:\PROGRAM FILES\QEMU-GA\QEMU-GA.EXE9
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\caraganas.exe RDTSC instruction interceptor: First address: 0000000002320156 second address: 0000000002320156 instructions:
Source: C:\Users\user\Desktop\caraganas.exe RDTSC instruction interceptor: First address: 00000000023227B7 second address: 00000000023227B7 instructions: 0x00000000 rdtsc 0x00000002 xor eax, eax 0x00000004 inc eax 0x00000005 cpuid 0x00000007 popad 0x00000008 call 00007F0D5C842EE8h 0x0000000d lfence 0x00000010 mov edx, dword ptr [7FFE0014h] 0x00000016 lfence 0x00000019 ret 0x0000001a sub edx, esi 0x0000001c ret 0x0000001d pop ecx 0x0000001e test ch, ah 0x00000020 add edi, edx 0x00000022 dec ecx 0x00000023 cmp ecx, 00000000h 0x00000026 jne 00007F0D5C842ED1h 0x00000028 push ecx 0x00000029 call 00007F0D5C842F2Eh 0x0000002e call 00007F0D5C842EF8h 0x00000033 lfence 0x00000036 mov edx, dword ptr [7FFE0014h] 0x0000003c lfence 0x0000003f ret 0x00000040 mov esi, edx 0x00000042 pushad 0x00000043 rdtsc
Source: C:\Users\user\Desktop\caraganas.exe RDTSC instruction interceptor: First address: 0000000002322948 second address: 0000000002322948 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 00007F0D5D0180FDh 0x0000001d popad 0x0000001e call 00007F0D5D015C76h 0x00000023 lfence 0x00000026 rdtsc
Source: C:\Users\user\Desktop\caraganas.exe RDTSC instruction interceptor: First address: 000000000232310C second address: 000000000232310C instructions:
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe RDTSC instruction interceptor: First address: 0000000000B02948 second address: 0000000000B02948 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 00007F0D5D0180FDh 0x0000001d popad 0x0000001e call 00007F0D5D015C76h 0x00000023 lfence 0x00000026 rdtsc
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe RDTSC instruction interceptor: First address: 0000000000B02E85 second address: 0000000000B02E85 instructions:
Contains functionality for execution timing, often used to detect debuggers
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B027A6 rdtsc 6_2_00B027A6
Contains long sleeps (>= 3 min)
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\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\v2.0.50727\RegAsm.exe Window / User API: threadDelayed 465 Jump to behavior
May sleep (evasive loops) to hinder dynamic analysis
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe TID: 5684 Thread sleep time: -922337203685477s >= -30000s Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe TID: 5684 Thread sleep time: -13950000s >= -30000s Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe TID: 5684 Thread sleep time: -30000s >= -30000s Jump to behavior
Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe WMI Queries: IWbemServices::CreateInstanceEnum - root\cimv2 : Win32_Processor
Sample execution stops while process was sleeping (likely an evasion)
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Last function: Thread delayed
Source: C:\Windows\System32\conhost.exe Last function: Thread delayed
Source: RegAsm.exe, 00000006.00000002.596328627.0000000000B01000.00000040.00000001.sdmp Binary or memory string: C:\Program Files\Qemu-ga\qemu-ga.exe9
Source: RegAsm.exe, 00000006.00000002.602849189.000000001FD40000.00000002.00000001.sdmp Binary or memory string: A Virtual Machine could not be started because Hyper-V is not installed.
Source: RegAsm.exe, 00000006.00000002.602849189.000000001FD40000.00000002.00000001.sdmp Binary or memory string: A communication protocol error has occurred between the Hyper-V Host and Guest Compute Service.
Source: RegAsm.exe Binary or memory string: C:\Program Files\Qemu-ga\qemu-ga.exe
Source: RegAsm.exe, 00000006.00000002.602849189.000000001FD40000.00000002.00000001.sdmp Binary or memory string: The communication protocol version between the Hyper-V Host and Guest Compute Services is not supported.
Source: RegAsm.exe, 00000006.00000002.602849189.000000001FD40000.00000002.00000001.sdmp Binary or memory string: An unknown internal message was received by the Hyper-V Compute Service.
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process information queried: ProcessInformation Jump to behavior

Anti Debugging:

barindex
Hides threads from debuggers
Source: C:\Users\user\Desktop\caraganas.exe Thread information set: HideFromDebugger Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Thread information set: HideFromDebugger Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Thread information set: HideFromDebugger Jump to behavior
Checks if the current process is being debugged
Source: C:\Users\user\Desktop\caraganas.exe Process queried: DebugPort Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process queried: DebugPort Jump to behavior
Contains functionality for execution timing, often used to detect debuggers
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B027A6 rdtsc 6_2_00B027A6
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_1F99DDB0 LdrInitializeThunk, 6_2_1F99DDB0
Contains functionality to read the PEB
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B040D0 mov eax, dword ptr fs:[00000030h] 6_2_00B040D0
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B05122 mov eax, dword ptr fs:[00000030h] 6_2_00B05122
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B0514A mov eax, dword ptr fs:[00000030h] 6_2_00B0514A
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B0514D mov eax, dword ptr fs:[00000030h] 6_2_00B0514D
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B0263B mov eax, dword ptr fs:[00000030h] 6_2_00B0263B
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B049BF mov eax, dword ptr fs:[00000030h] 6_2_00B049BF
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Code function: 6_2_00B049C5 mov eax, dword ptr fs:[00000030h] 6_2_00B049C5
Enables debug privileges
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Process token adjusted: Debug Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Memory allocated: page read and write | page guard Jump to behavior

HIPS / PFW / Operating System Protection Evasion:

barindex
Writes to foreign memory regions
Source: C:\Users\user\Desktop\caraganas.exe Memory written: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe base: B00000 Jump to behavior
Creates a process in suspended mode (likely to inject code)
Source: C:\Users\user\Desktop\caraganas.exe Process created: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe 'C:\Users\user\Desktop\caraganas.exe' Jump to behavior
Source: C:\Users\user\Desktop\caraganas.exe Process created: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe 'C:\Users\user\Desktop\caraganas.exe' Jump to behavior
Source: RegAsm.exe, 00000006.00000002.597355520.00000000013A0000.00000002.00000001.sdmp Binary or memory string: Shell_TrayWnd
Source: RegAsm.exe, 00000006.00000002.597355520.00000000013A0000.00000002.00000001.sdmp Binary or memory string: Progman
Source: RegAsm.exe, 00000006.00000002.597355520.00000000013A0000.00000002.00000001.sdmp Binary or memory string: &Program Manager
Source: RegAsm.exe, 00000006.00000002.597355520.00000000013A0000.00000002.00000001.sdmp Binary or memory string: Progmanlock

Language, Device and Operating System Detection:

barindex
Queries the volume information (name, serial number etc) of a device
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Queries volume information: C:\Windows\assembly\GAC_32\CustomMarshalers\2.0.0.0__b03f5f7f11d50a3a\CustomMarshalers.dll VolumeInformation Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Queries volume information: C:\Windows\assembly\GAC_32\CustomMarshalers\2.0.0.0__b03f5f7f11d50a3a\CustomMarshalers.dll VolumeInformation Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography MachineGuid Jump to behavior

Stealing of Sensitive Information:

barindex
Yara detected AgentTesla
Source: Yara match File source: 00000006.00000002.601350930.000000001D7E1000.00000004.00000001.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: RegAsm.exe PID: 2916, type: MEMORY
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Key opened: HKEY_CURRENT_USER\SOFTWARE\Martin Prikryl\WinSCP 2\Sessions Jump to behavior
Tries to harvest and steal browser information (history, passwords, etc)
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe File opened: C:\Users\user\AppData\Local\Google\Chrome\User Data\Default\Login Data Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe File opened: C:\Users\user\AppData\Roaming\Mozilla\Firefox\profiles.ini Jump to behavior
Tries to harvest and steal ftp login credentials
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe File opened: C:\Users\user\AppData\Roaming\FileZilla\recentservers.xml Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe File opened: C:\Users\user\AppData\Roaming\SmartFTP\Client 2.0\Favorites\Quick Connect\ Jump to behavior
Tries to steal Mail credentials (via file access)
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe File opened: C:\Users\user\AppData\Roaming\Thunderbird\profiles.ini Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe File opened: C:\Users\user\AppData\Roaming\Thunderbird\profiles.ini Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe Key opened: HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Jump to behavior
Yara detected Credential Stealer
Source: Yara match File source: 00000006.00000002.601350930.000000001D7E1000.00000004.00000001.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: RegAsm.exe PID: 2916, type: MEMORY

Remote Access Functionality:

barindex
Yara detected AgentTesla
Source: Yara match File source: 00000006.00000002.601350930.000000001D7E1000.00000004.00000001.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: RegAsm.exe PID: 2916, 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 dnsIp2 2 Behavior Graph ID: 358114 Sample: caraganas.exe Startdate: 25/02/2021 Architecture: WINDOWS Score: 100 19 mail.jesmar.net 2->19 21 jesmar.net 2->21 27 Found malware configuration 2->27 29 Multi AV Scanner detection for submitted file 2->29 31 Yara detected GuLoader 2->31 33 3 other signatures 2->33 8 caraganas.exe 1 2->8         started        signatures3 process4 signatures5 35 Writes to foreign memory regions 8->35 37 Detected RDTSC dummy instruction sequence (likely for instruction hammering) 8->37 39 Tries to detect Any.run 8->39 41 2 other signatures 8->41 11 RegAsm.exe 11 8->11         started        15 RegAsm.exe 8->15         started        process6 dnsIp7 23 googlehosted.l.googleusercontent.com 142.250.186.33, 443, 49731 GOOGLEUS United States 11->23 25 doc-08-58-docs.googleusercontent.com 11->25 43 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 11->43 45 Tries to steal Mail credentials (via file access) 11->45 47 Tries to harvest and steal ftp login credentials 11->47 55 3 other signatures 11->55 17 conhost.exe 11->17         started        49 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 15->49 51 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 15->51 53 Detected RDTSC dummy instruction sequence (likely for instruction hammering) 15->53 57 2 other signatures 15->57 signatures8 process9
  • 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
jesmar.net 31.193.225.171 true
doc-08-58-docs.googleusercontent.com unknown unknown
mail.jesmar.net unknown unknown

Contacted URLs

Name Malicious Antivirus Detection Reputation
http://8vV1Qxo32XjttpL.org true
  • Avira URL Cloud: safe
 unknown