Report - br.exe

AsyncRAT backdoor PWS .NET framework Anti_VM Malicious Library DGA DNS SMTP Socket Create Service Sniff Audio Escalate priviledges KeyLogger Code injection Internet API ScreenShot Downloader AntiDebug AntiVM PE File .NET EXE PE32
ScreenShot
Created 2021.06.08 13:37 Machine s1_win7_x6402
Filename br.exe
Type PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
AI Score
3
Behavior Score
13.8
ZERO API file : malware
VT API (file) 40 detected (malicious, high confidence, GenericKD, Unsafe, NanoBot, starter, ali1000139, Eldorado, Kryptik, ABHC, RATX, score, R002C0WF621, Fareit, zfjad, Tiggre, Artemis, ai score=82, HeapOverride, Static AI, Malicious PE, susgen, ABGM, GdSda)
md5 1c85f40e4abe47f93982099c8d9753c1
sha256 3f5830ed51bc3d293293aa82e69232dc54c8b679f4dcfcc6b6465d240439a0fa
ssdeep 98304:vMW2A0hnN69NHU7+mFn6NHUJqwruKipwdcZD3:kzN6Mn+HeyqCZD3
imphash f34d5f2d4577ed6d9ceec516c1f5a744
impfuzzy 3:rGsLdAIEK:tf
  Network IP location

Signature (28cnts)

Level Description
danger File has been identified by 40 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 Communicates with host for which no DNS query was performed
watch Creates a windows hook that monitors keyboard input (keylogger)
watch Deletes executed files from disk
watch Installs an hook procedure to monitor for mouse events
watch Looks for the Windows Idle Time to determine the uptime
watch Manipulates memory of a non-child process indicative of process injection
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 Checks for the Locally Unique Identifier on the system for a suspicious privilege
notice Creates a suspicious process
notice One or more potentially interesting buffers were extracted
notice Potentially malicious URLs were found in the process memory dump
notice Terminates another process
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 (29cnts)

Level Name Description Collection
watch Malicious_Library_Zero Malicious_Library binaries (upload)
watch Network_Downloader File Downloader memory
watch Win32_Trojan_PWS_Net_1_Zero Win32 Trojan PWS .NET Azorult binaries (upload)
notice anti_vm_detect Possibly employs anti-virtualization techniques binaries (upload)
notice Code_injection Code injection with CreateRemoteThread in a remote process memory
notice Create_Service Create a windows service memory
notice Escalate_priviledges Escalate priviledges memory
notice KeyLogger Run a KeyLogger memory
notice Network_DGA Communication using DGA memory
notice Network_DNS Communications use DNS memory
notice network_smtp_raw Communications smtp memory
notice Network_TCP_Socket Communications over RAW Socket memory
notice ScreenShot Take ScreenShot memory
notice Sniff_Audio Record Audio 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 DebuggerException__SetConsoleCtrl (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 (upload)
info PE_Header_Zero PE File Signature binaries (upload)
info SEH__vectored (no description) memory
info ThreadControl__Context (no description) memory
info win_hook Affect hook table memory
info Win_Backdoor_AsyncRAT_Zero Win Backdoor AsyncRAT binaries (upload)

Network (1cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?
79.134.225.73 CH Fink Telecom Services 79.134.225.73 mailcious

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