Report - KB5040434.exe

Malicious Library Malicious Packer .NET framework(MSIL) UPX PE File .NET EXE PE32 OS Processor Check
ScreenShot
Created 2024.08.12 08:50 Machine s1_win7_x6401
Filename KB5040434.exe
Type PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
AI Score
9
Behavior Score
3.0
ZERO API file : malware
VT API (file)
md5 bb5b9b9eb50152e5e10bc4983b6c527b
sha256 e6b89b5c3f4e18e76b372fb4d9d7c45b77b1454e43c1f02223c83cff04e24294
ssdeep 3072:EbtcfSnnknyfUA0Xf4NQ290MnFnWhsAPiCE8+jcoJr2/++BolB:Ebe6nn9fUvft29RW5ja3P+Bw
imphash f34d5f2d4577ed6d9ceec516c1f5a744
impfuzzy 3:rGsLdAIEK:tf
  Network IP location

Signature (8cnts)

Level Description
watch A process attempted to delay the analysis task.
watch Looks for the Windows Idle Time to determine the uptime
notice Allocates read-write-execute memory (usually to unpack itself)
notice Checks for the Locally Unique Identifier on the system for a suspicious privilege
notice The binary likely contains encrypted or compressed data indicative of a packer
info Checks amount of memory in system
info Checks if process is being debugged by a debugger
info The executable contains unknown PE section names indicative of a packer (could be a false positive)

Rules (8cnts)

Level Name Description Collection
watch Malicious_Library_Zero Malicious_Library binaries (upload)
watch Malicious_Packer_Zero Malicious Packer binaries (upload)
watch UPX_Zero UPX packed file binaries (upload)
watch Win32_Trojan_PWS_Net_1_Zero Win32 Trojan PWS .NET Azorult binaries (upload)
info Is_DotNET_EXE (no description) binaries (upload)
info IsPE32 (no description) binaries (upload)
info OS_Processor_Check_Zero OS Processor Check binaries (upload)
info PE_Header_Zero PE File Signature binaries (upload)

Network (0cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?

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