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Report - 956d73b7f041.exe#default15st

Stealc Client SW User Data Stealer Gen1 ftp Client info stealer Generic Malware Malicious Library UPX Malicious Packer Http API PWS HTTP Internet API AntiDebug AntiVM PE File PE32 OS Processor Check DLL
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  2. Detailed report
ScreenShot
Created 2024.10.04 08:44 Machine s1_win7_x6403
Filename 956d73b7f041.exe#default15st
Type PE32 executable (GUI) Intel 80386, for MS Windows
AI Score
9
 Behavior Score
15.0
ZERO API file : clean
VT API (file)
md5 cd15f137f9979ce6329ff8c21d508caa
sha256 0a90343d8f34e8ca7325ea811b5ad3b1b9041118cedc5116fe79685b0f9d248f
ssdeep 12288:VM1jhqUMO/t9no2si5SWY8INIahRTfDdzPREO:W8O1ZJsi5n4DTfDdrRt
imphash 69854c3157e3707e6096a5eb135f16aa
impfuzzy 24:SpkcpVWZttlS14GhlJBl3eDYouDZVv5GMAkpOovbOPZu:pcpVettlS14GnpLlZdk3k
  Network IP location

Signature (32cnts)

Level Description
danger Executed a process and injected code into it
watch Allocates execute permission to another process indicative of possible code injection
watch Attempts to detect Cuckoo Sandbox through the presence of a file
watch Checks the CPU name from registry
watch Code injection by writing an executable or DLL to the memory of another process
watch Collects information about installed applications
watch Communicates with host for which no DNS query was performed
watch Detects VirtualBox using WNetGetProviderName trick
watch Harvests credentials from local email clients
watch Harvests credentials from local FTP client softwares
watch Potential code injection by writing to the memory of another process
watch Resumed a suspended thread in a remote process potentially indicative of process injection
watch Used NtSetContextThread to modify a thread in a remote process indicative of process injection
notice Allocates read-write-execute memory (usually to unpack itself)
notice An executable file was downloaded by the process msbuild.exe
notice Checks adapter addresses which can be used to detect virtual network interfaces
notice Creates a shortcut to an executable file
notice Creates executable files on the filesystem
notice HTTP traffic contains suspicious features which may be indicative of malware related traffic
notice One or more potentially interesting buffers were extracted
notice Performs some HTTP requests
notice Queries for potentially installed applications
notice Queries the disk size which could be used to detect virtual machine with small fixed size or dynamic allocation
notice Searches running processes potentially to identify processes for sandbox evasion
notice Sends data using the HTTP POST Method
notice Steals private information from local Internet browsers
notice The binary likely contains encrypted or compressed data indicative of a packer
notice Yara rule detected in process memory
info Checks amount of memory in system
info One or more processes crashed
info Queries for the computername
info Tries to locate where the browsers are installed

Rules (29cnts)

Level Name Description Collection
danger Client_SW_User_Data_Stealer Client_SW_User_Data_Stealer memory
danger Win32_Trojan_Gen_1_0904B0_Zero Win32 Trojan Emotet binaries (download)
warning Generic_Malware_Zero Generic Malware binaries (download)
warning Generic_Malware_Zero Generic Malware binaries (upload)
warning infoStealer_ftpClients_Zero ftp clients info stealer memory
watch Malicious_Library_Zero Malicious_Library binaries (download)
watch Malicious_Library_Zero Malicious_Library binaries (upload)
watch Malicious_Packer_Zero Malicious Packer binaries (download)
watch UPX_Zero UPX packed file binaries (download)
watch UPX_Zero UPX packed file binaries (upload)
notice Generic_PWS_Memory_Zero PWS Memory memory
notice Network_HTTP Communications over HTTP memory
notice Str_Win32_Http_API Match Windows Http API call memory
notice Str_Win32_Internet_API Match Windows Inet API call memory
info anti_dbg Checks if being debugged memory
info DebuggerCheck__GlobalFlags (no description) memory
info DebuggerCheck__QueryInfo (no description) memory
info DebuggerHiding__Active (no description) memory
info DebuggerHiding__Thread (no description) memory
info disable_dep Bypass DEP memory
info IsDLL (no description) binaries (download)
info IsPE32 (no description) binaries (download)
info IsPE32 (no description) binaries (upload)
info OS_Processor_Check_Zero OS Processor Check binaries (download)
info OS_Processor_Check_Zero OS Processor Check binaries (upload)
info PE_Header_Zero PE File Signature binaries (download)
info PE_Header_Zero PE File Signature binaries (upload)
info SEH__vectored (no description) memory
info ThreadControl__Context (no description) memory

Network (10cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?
http://62.204.41.159/
whois
Unknown 62.204.41.159 42595 mailcious
http://62.204.41.159/edd20096ecef326d.php
whois
Unknown 62.204.41.159 clean
http://62.204.41.159/db293a2c1b1c70c4/vcruntime140.dll
whois
Unknown 62.204.41.159 clean
http://62.204.41.159/db293a2c1b1c70c4/sqlite3.dll
whois
Unknown 62.204.41.159 clean
http://62.204.41.159/db293a2c1b1c70c4/nss3.dll
whois
Unknown 62.204.41.159 clean
http://62.204.41.159/db293a2c1b1c70c4/freebl3.dll
whois
Unknown 62.204.41.159 clean
http://62.204.41.159/db293a2c1b1c70c4/mozglue.dll
whois
Unknown 62.204.41.159 clean
http://62.204.41.159/db293a2c1b1c70c4/softokn3.dll
whois
Unknown 62.204.41.159 clean
http://62.204.41.159/db293a2c1b1c70c4/msvcp140.dll
whois
Unknown 62.204.41.159 clean
62.204.41.159
whois
Unknown 62.204.41.159 mailcious

Suricata ids

ET DROP Spamhaus DROP Listed Traffic Inbound group 6
ET INFO Dotted Quad Host DLL Request
ET MALWARE [SEKOIA.IO] Win32/Stealc C2 Check-in
ET HUNTING HTTP GET Request for freebl3.dll - Possible Infostealer Activity
ET MALWARE Win32/Stealc Requesting browsers Config from C2
ET MALWARE Win32/Stealc Active C2 Responding with browsers Config M1
ET POLICY PE EXE or DLL Windows file download HTTP
ET MALWARE Win32/Stealc Requesting plugins Config from C2
ET INFO Executable Retrieved With Minimal HTTP Headers - Potential Second Stage Download
ET MALWARE Win32/Stealc/Vidar Stealer Active C2 Responding with plugins Config M1
ET MALWARE Win32/Stealc Submitting System Information to C2
ET HUNTING HTTP GET Request for sqlite3.dll - Possible Infostealer Activity
ET HUNTING HTTP GET Request for mozglue.dll - Possible Infostealer Activity
ET HUNTING HTTP GET Request for nss3.dll - Possible Infostealer Activity
ET HUNTING HTTP GET Request for softokn3.dll - Possible Infostealer Activity
ET HUNTING HTTP GET Request for vcruntime140.dll - Possible Infostealer Activity

PE API

IAT(Import Address Table) Library

USER32.dll
 0x41e12c CallWindowProcW
KERNEL32.dll
 0x41e000 LoadLibraryExW
 0x41e004 CreateFileW
 0x41e008 GetConsoleWindow
 0x41e00c MultiByteToWideChar
 0x41e010 GetStringTypeW
 0x41e014 WideCharToMultiByte
 0x41e018 EnterCriticalSection
 0x41e01c LeaveCriticalSection
 0x41e020 InitializeCriticalSectionEx
 0x41e024 DeleteCriticalSection
 0x41e028 EncodePointer
 0x41e02c DecodePointer
 0x41e030 LCMapStringEx
 0x41e034 GetCPInfo
 0x41e038 IsProcessorFeaturePresent
 0x41e03c UnhandledExceptionFilter
 0x41e040 SetUnhandledExceptionFilter
 0x41e044 GetCurrentProcess
 0x41e048 TerminateProcess
 0x41e04c QueryPerformanceCounter
 0x41e050 GetCurrentProcessId
 0x41e054 GetCurrentThreadId
 0x41e058 GetSystemTimeAsFileTime
 0x41e05c InitializeSListHead
 0x41e060 IsDebuggerPresent
 0x41e064 GetStartupInfoW
 0x41e068 GetModuleHandleW
 0x41e06c HeapSize
 0x41e070 RaiseException
 0x41e074 RtlUnwind
 0x41e078 GetLastError
 0x41e07c SetLastError
 0x41e080 InitializeCriticalSectionAndSpinCount
 0x41e084 TlsAlloc
 0x41e088 TlsGetValue
 0x41e08c TlsSetValue
 0x41e090 TlsFree
 0x41e094 FreeLibrary
 0x41e098 GetProcAddress
 0x41e09c WriteConsoleW
 0x41e0a0 GetStdHandle
 0x41e0a4 WriteFile
 0x41e0a8 GetModuleFileNameW
 0x41e0ac ExitProcess
 0x41e0b0 GetModuleHandleExW
 0x41e0b4 HeapFree
 0x41e0b8 LCMapStringW
 0x41e0bc GetLocaleInfoW
 0x41e0c0 IsValidLocale
 0x41e0c4 GetUserDefaultLCID
 0x41e0c8 EnumSystemLocalesW
 0x41e0cc HeapAlloc
 0x41e0d0 GetFileType
 0x41e0d4 CloseHandle
 0x41e0d8 FlushFileBuffers
 0x41e0dc GetConsoleOutputCP
 0x41e0e0 GetConsoleMode
 0x41e0e4 ReadFile
 0x41e0e8 GetFileSizeEx
 0x41e0ec SetFilePointerEx
 0x41e0f0 ReadConsoleW
 0x41e0f4 HeapReAlloc
 0x41e0f8 FindClose
 0x41e0fc FindFirstFileExW
 0x41e100 FindNextFileW
 0x41e104 IsValidCodePage
 0x41e108 GetACP
 0x41e10c GetOEMCP
 0x41e110 GetCommandLineA
 0x41e114 GetCommandLineW
 0x41e118 GetEnvironmentStringsW
 0x41e11c FreeEnvironmentStringsW
 0x41e120 SetStdHandle
 0x41e124 GetProcessHeap

EAT(Export Address Table) is none


Similarity measure (PE file only) - Checking for service failure