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Report - vbc.exe

AgentTesla AsyncRAT backdoor PWS .NET framework Admin Tool (Sysinternals Devolutions inc) Malicious Library DGA DNS Socket Create Service Sniff Audio HTTP Escalate priviledges KeyLogger FTP Hijack Network Code injection Http API Internet API Steal credent
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ScreenShot
Created 2021.06.14 15:22 Machine s1_win7_x6401
Filename vbc.exe
Type PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
AI Score Not founds Behavior Score
6.2
ZERO API file : malware
VT API (file) 44 detected (Malware@#309iaam419f0r, Trojan.Win32.Generic!BT, Malicious, Backdoor.MSIL.eqxv, TROJ_GEN.R002C0DFA21, W32/MSIL_Agent.CAE.gen!Eldorado, Trojan.MSIL.Crypt, Backdoor:MSIL/AgentTesla.28de0e4c, Trojan.PackedNET.832, Trojan.Generic.D127EB, Trojan.GenericKDZ.75755, Trojan.Kryptik/MSIL!1.D720 (CLASSIC), MSIL.Trojan.PSE.1XSW3H7, Trojan.Gen.2, Trojan.Malware.300983.susgen, TR/AD.LokiBot.ugxgd, Trj/GdSda.A, Win32.Hack.Undef.(kcloud), Trojan.Crypt.MSIL, Backdoor.MSIL, Trojan/Win.AgentTesla.R424914, Trojan.Win32.Packed.dd!n, Trojan ( 0057dccf1 ), Trojan:MSIL/AgentTesla.BHT!MTB, Malicious (score: 100), Win32:MalwareX-gen [Trj, MSIL/Kryptik.ABJN!tr, RDN/Generic BackDoor, Backdoor.MSIL.Androm.gen, generic.ml, Unsafe, a variant of MSIL/Kryptik.ABJN, Trojan.Formbook (A), Mal/Generic-S + Troj/Kryptik-YE, HEUR:Backdoor.MSIL.Androm.gen, malware (ai score=100))
md5 f91a59d752971b133ff68b550ff847fb
sha256 e0a6f7200b615f3fab572c73070defb075a6d3bad9d7ee50373ea65c8a54bc10
ssdeep 12288:47hQ15tDPvH/iFi7KxZlMV40JZh7o/z45i0WbgfzaGvR574mUlbP2qhS:44V2xZUBw45zR2+
imphash f34d5f2d4577ed6d9ceec516c1f5a744
impfuzzy 3:rGsLdAIEK:tf
  Network IP location

Signature (14cnts)

Level Description
watch Communicates with host for which no DNS query was performed
watch File has been identified by 13 AntiVirus engines on VirusTotal as malicious
watch Found URLs in memory pointing to an IP address rather than a domain (potentially indicative of Command & Control traffic)
watch Resumed a suspended thread in a remote process potentially indicative of process injection
notice Allocates read-write-execute memory (usually to unpack itself)
notice An application raised an exception which may be indicative of an exploit crash
notice Creates executable files on the filesystem
notice Drops an executable to the user AppData folder
notice HTTP traffic contains suspicious features which may be indicative of malware related traffic
notice Performs some HTTP requests
notice Potentially malicious URLs were found in the process memory dump
notice Uses Windows utilities for basic Windows functionality
notice Yara rule detected in process memory
info One or more processes crashed

Rules (42cnts)

Level Name Description Collection
watch Admin_Tool_IN_Zero Admin Tool Sysinternals binaries (download)
watch Malicious_Library_Zero Malicious_Library binaries (download)
watch Network_Downloader File Downloader memory
watch Win32_Trojan_PWS_Net_1_Zero Win32 Trojan PWS .NET Azorult binaries (download)
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 Hijack_Network Hijack network configuration memory
notice KeyLogger Run a KeyLogger memory
notice local_credential_Steal Steal credential memory
notice Network_DGA Communication using DGA memory
notice Network_DNS Communications use DNS memory
notice Network_FTP Communications over FTP memory
notice Network_HTTP Communications over HTTP memory
notice Network_P2P_Win Communications over P2P network memory
notice Network_TCP_Socket Communications over RAW Socket memory
notice Persistence Install itself for autorun at Windows startup memory
notice ScreenShot Take ScreenShot memory
notice Sniff_Audio Record Audio 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 antisb_threatExpert Anti-Sandbox checks for ThreatExpert memory
info Check_Dlls (no description) memory
info DebuggerCheck__GlobalFlags (no description) memory
info DebuggerCheck__QueryInfo (no description) memory
info DebuggerCheck__RemoteAPI (no description) memory
info DebuggerException__ConsoleCtrl (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 (download)
info IsPE32 (no description) binaries (download)
info Microsoft_Office_File_Zero Microsoft Office File binaries (download)
info OS_Processor_Check_Zero OS Processor Check binaries (download)
info PE_Header_Zero PE File Signature binaries (download)
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 (download)
info Win_Trojan_agentTesla_Zero Win.Trojan.agentTesla memory

Network (2cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?
http://103.156.91.50/fresh/vbc.exe
whois
Unknown 103.156.91.50 malware
103.156.91.50
whois
Unknown 103.156.91.50 mailcious

Suricata ids

SSLBL: Malicious JA3 SSL-Client Fingerprint detected (Tofsee)
ET INFO Executable Download from dotted-quad Host
ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
ET POLICY PE EXE or DLL Windows file download HTTP
ET HUNTING SUSPICIOUS Dotted Quad Host MZ Response
ET INFO TLS Handshake Failure

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