Report - assistant.exe

UPX Admin Tool (Sysinternals etc ...) .NET framework(MSIL) Malicious Library Socket ScreenShot Steal credential DNS AntiDebug AntiVM PE File PE32 .NET EXE OS Processor Check DLL
ScreenShot
Created 2023.10.05 17:14 Machine s1_win7_x6401
Filename assistant.exe
Type PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
AI Score
1
Behavior Score
14.8
ZERO API file : mailcious
VT API (file) 16 detected (malicious, high confidence, Kryptik, Eldorado, Attribute, HighConfidence, AJQV, Stealerc, CrypterX, Nekark, Detected, Injection, ZemsilF, @p3@aeIkOCe, susgen)
md5 b7ae64240c4a5098002454038cdfbb73
sha256 fc5ed92eb2e8f17b7daba660abc9424d813985db284388af3342651c43c5b8d5
ssdeep 98304:p9uGj36PPTni0raY6F2g8QYQXf04PkKJx:p9noTni0emg8Qzv0qx
imphash f34d5f2d4577ed6d9ceec516c1f5a744
impfuzzy 3:rGsLdAIEK:tf
  Network IP location

Signature (33cnts)

Level Description
danger Executed a process and injected code into it
watch Allocates execute permission to another process indicative of possible code injection
watch Appends a known CryptoMix ransomware file extension to files that have been encrypted
watch Attempts to access Bitcoin/ALTCoin wallets
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 File has been identified by 16 AntiVirus engines on VirusTotal as malicious
watch Harvests credentials from local email clients
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 Creates executable files on the filesystem
notice Drops an executable to the user AppData folder
notice Looks up the external IP address
notice One or more potentially interesting buffers were extracted
notice Performs some HTTP requests
notice Potentially malicious URLs were found in the process memory dump
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 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 Checks if process is being debugged by a debugger
info Collects information to fingerprint the system (MachineGuid
info Queries for the computername
info This executable has a PDB path
info Tries to locate where the browsers are installed
info Uses Windows APIs to generate a cryptographic key

Rules (25cnts)

Level Name Description Collection
watch Admin_Tool_IN_Zero Admin Tool Sysinternals binaries (upload)
watch Malicious_Library_Zero Malicious_Library binaries (download)
watch UPX_Zero UPX packed file binaries (download)
watch UPX_Zero UPX packed file binaries (upload)
watch Win32_Trojan_PWS_Net_1_Zero Win32 Trojan PWS .NET Azorult binaries (upload)
notice local_credential_Steal Steal credential memory
notice Network_DNS Communications use DNS memory
notice Network_TCP_Socket Communications over RAW Socket memory
notice ScreenShot Take ScreenShot 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 Is_DotNET_EXE (no description) binaries (upload)
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 (6cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?
https://db-ip.com/demo/home.php?s=175.208.134.152 US CLOUDFLARENET 104.26.5.15 clean
ipinfo.io US GOOGLE 34.117.59.81 clean
db-ip.com US CLOUDFLARENET 104.26.5.15 clean
171.22.28.242 DE CMCS 171.22.28.242 clean
104.26.5.15 US CLOUDFLARENET 104.26.5.15 clean
34.117.59.81 US GOOGLE 34.117.59.81 clean

Suricata ids

PE API

IAT(Import Address Table) Library

mscoree.dll
 0x402000 _CorExeMain

EAT(Export Address Table) is none



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