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Report - f2e7fcb20146.exe#sp_sl

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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ScreenShot
Created 2024.10.08 21:59 Machine s1_win7_x6401
Filename f2e7fcb20146.exe#sp_sl
Type PE32 executable (GUI) Intel 80386, for MS Windows
AI Score
6
 Behavior Score
11.4
ZERO API file : malware
VT API (file)
md5 4f9ef89029c099ef1a16718087c1deab
sha256 e274d51ea7826fd0eb19f2b12fdf5f6baa720d599229ddf9aac7e802a059a4e6
ssdeep 12288:eadlka1IlaMxLywr23x+0tAGhKfi9arHLfiGP8a4S:eda1g2c8f5hKfq0iGW
imphash d10af643340e1121562abe3e6bd5b0e1
impfuzzy 24:1cpVWZttlS1wGhlJBl3eDoLoBgvuZ8GMA+pOovbOPZi:1cpVettlS1wGnpXnuZb3I
  Network IP location

Signature (25cnts)

Level Description
danger Executed a process and injected code into it
watch Allocates execute permission to another process indicative of possible code injection
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 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 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 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 (30cnts)

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)
danger Win32_Trojan_Gen_1_0904B0_Zero Win32 Trojan Emotet binaries (upload)
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://46.8.231.109/1309cdeb8f4c8736/nss3.dll
whois
RU LLC trc Fiord 46.8.231.109 clean
http://46.8.231.109/1309cdeb8f4c8736/msvcp140.dll
whois
RU LLC trc Fiord 46.8.231.109 clean
http://46.8.231.109/1309cdeb8f4c8736/sqlite3.dll
whois
RU LLC trc Fiord 46.8.231.109 clean
http://46.8.231.109/c4754d4f680ead72.php
whois
RU LLC trc Fiord 46.8.231.109 42211 mailcious
http://46.8.231.109/1309cdeb8f4c8736/vcruntime140.dll
whois
RU LLC trc Fiord 46.8.231.109 clean
http://46.8.231.109/1309cdeb8f4c8736/softokn3.dll
whois
RU LLC trc Fiord 46.8.231.109 clean
http://46.8.231.109/1309cdeb8f4c8736/mozglue.dll
whois
RU LLC trc Fiord 46.8.231.109 clean
http://46.8.231.109/
whois
RU LLC trc Fiord 46.8.231.109 42142 mailcious
http://46.8.231.109/1309cdeb8f4c8736/freebl3.dll
whois
RU LLC trc Fiord 46.8.231.109 clean
46.8.231.109
whois
RU LLC trc Fiord 46.8.231.109 mailcious

Suricata ids

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

KERNEL32.dll
 0x423000 AttachConsole
 0x423004 MultiByteToWideChar
 0x423008 GetStringTypeW
 0x42300c WideCharToMultiByte
 0x423010 EnterCriticalSection
 0x423014 LeaveCriticalSection
 0x423018 InitializeCriticalSectionEx
 0x42301c DeleteCriticalSection
 0x423020 EncodePointer
 0x423024 DecodePointer
 0x423028 LCMapStringEx
 0x42302c GetCPInfo
 0x423030 IsProcessorFeaturePresent
 0x423034 UnhandledExceptionFilter
 0x423038 SetUnhandledExceptionFilter
 0x42303c GetCurrentProcess
 0x423040 TerminateProcess
 0x423044 QueryPerformanceCounter
 0x423048 GetCurrentProcessId
 0x42304c GetCurrentThreadId
 0x423050 GetSystemTimeAsFileTime
 0x423054 InitializeSListHead
 0x423058 IsDebuggerPresent
 0x42305c GetStartupInfoW
 0x423060 GetModuleHandleW
 0x423064 CreateFileW
 0x423068 RaiseException
 0x42306c RtlUnwind
 0x423070 GetLastError
 0x423074 SetLastError
 0x423078 InitializeCriticalSectionAndSpinCount
 0x42307c TlsAlloc
 0x423080 TlsGetValue
 0x423084 TlsSetValue
 0x423088 TlsFree
 0x42308c FreeLibrary
 0x423090 GetProcAddress
 0x423094 LoadLibraryExW
 0x423098 GetStdHandle
 0x42309c WriteFile
 0x4230a0 GetModuleFileNameW
 0x4230a4 ExitProcess
 0x4230a8 GetModuleHandleExW
 0x4230ac HeapAlloc
 0x4230b0 HeapFree
 0x4230b4 GetFileType
 0x4230b8 LCMapStringW
 0x4230bc GetLocaleInfoW
 0x4230c0 IsValidLocale
 0x4230c4 GetUserDefaultLCID
 0x4230c8 EnumSystemLocalesW
 0x4230cc GetFileSizeEx
 0x4230d0 SetFilePointerEx
 0x4230d4 CloseHandle
 0x4230d8 FlushFileBuffers
 0x4230dc GetConsoleOutputCP
 0x4230e0 GetConsoleMode
 0x4230e4 ReadFile
 0x4230e8 HeapReAlloc
 0x4230ec FindClose
 0x4230f0 FindFirstFileExW
 0x4230f4 FindNextFileW
 0x4230f8 IsValidCodePage
 0x4230fc GetACP
 0x423100 GetOEMCP
 0x423104 GetCommandLineA
 0x423108 GetCommandLineW
 0x42310c GetEnvironmentStringsW
 0x423110 FreeEnvironmentStringsW
 0x423114 SetStdHandle
 0x423118 GetProcessHeap
 0x42311c ReadConsoleW
 0x423120 HeapSize
 0x423124 WriteConsoleW

EAT(Export Address Table) is none


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