Report - buildcr.exe

RAT Gen2 UPX Malicious Library Admin Tool (Sysinternals etc ...) AntiDebug AntiVM .NET EXE PE32 PE File OS Processor Check
ScreenShot
Created 2023.04.05 06:52 Machine s1_win7_x6401
Filename buildcr.exe
Type PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
AI Score
9
Behavior Score
9.4
ZERO API file : malware
VT API (file) 49 detected (AIDetectNet, malicious, high confidence, GenericKD, Artemis, Save, confidence, 100%, Attribute, HighConfidence, Kryptik, AHUA, PWSX, Bplw, Nekark, uochc, Steam, moderate, score, Static AI, Malicious PE, Detected, ai score=89, Wacatac, Casdet, ZemsilF, km0@ay6g7rdG, unsafe, Chgt, R002H0CD323, MSIL@AI, MSIL2, QOxBPSdGyoCmOaCwxlCt, AgentTesla, ADWG)
md5 33a45fcbca9c96cf4d9f456d27d87820
sha256 b36ef72aaa0d415d8b11c46f330258ffee9dd5030e1c7a07398c706f7c048598
ssdeep 3072:/RYdMvZ75FI5cq29AzvWJNXiHzrlXuUu98pU9ED7+ltVswrdmb8MyJ+8bDvLJA:L7sBXHfleUu2U9U7+ltVswBm428bDD6
imphash f34d5f2d4577ed6d9ceec516c1f5a744
impfuzzy 3:rGsLdAIEK:tf
  Network IP location

Signature (20cnts)

Level Description
danger File has been identified by 49 AntiVirus engines on VirusTotal as malicious
danger Executed a process and injected code into it
watch Allocates execute permission to another process indicative of possible code injection
watch Code injection by writing an executable or DLL to the memory of another process
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 A process created a hidden window
notice Allocates read-write-execute memory (usually to unpack itself)
notice Creates a suspicious process
notice Drops a binary and executes it
notice One or more potentially interesting buffers were extracted
notice The binary likely contains encrypted or compressed data indicative of a packer
notice Uses Windows utilities for basic Windows functionality
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 Command line console output was observed
info Queries for the computername
info Uses Windows APIs to generate a cryptographic key

Rules (20cnts)

Level Name Description Collection
watch Admin_Tool_IN_Zero Admin Tool Sysinternals binaries (download)
watch Malicious_Library_Zero Malicious_Library binaries (download)
watch UPX_Zero UPX packed file binaries (download)
watch UPX_Zero UPX packed file binaries (upload)
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 IsPE32 (no description) binaries (download)
info IsPE32 (no description) binaries (upload)
info OS_Processor_Check_Zero OS Processor Check binaries (download)
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
info Win32_Trojan_Gen_2_0904B0_Zero Win32 Trojan Gen binaries (download)
info Win_Backdoor_AsyncRAT_Zero Win Backdoor AsyncRAT 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