Report - vbc.exe

RAT Generic Malware UPX Admin Tool (Sysinternals etc ...) SMTP KeyLogger AntiDebug AntiVM .NET EXE PE File PE32
ScreenShot
Created 2021.08.10 17:45 Machine s1_win7_x6402
Filename vbc.exe
Type PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
AI Score
4
Behavior Score
11.8
ZERO API file : clean
VT API (file) 12 detected (Save, Malicious, Static AI, Malicious PE, AgentTesla, ZemsilCO, Em0@aatJaWp, FormBook, susgen, confidence, 100%)
md5 d7674428d2b9970b706165d4ab317c0a
sha256 03d462a965108a9d9a216c4e26fa222c3fbba2e649a0e3e2cba8609070c6caf0
ssdeep 6144:5VshYiCWXpsFU1X0Gg1U/S71ZzH5wJlM1FE2EdYs6WcES0q:DsmihpsFUp0Gh/S71ZLj1F1ENc5
imphash f34d5f2d4577ed6d9ceec516c1f5a744
impfuzzy 3:rGsLdAIEK:tf
  Network IP location

Signature (25cnts)

Level Description
danger Executed a process and injected code into it
watch A process attempted to delay the analysis task.
watch Allocates execute permission to another process indicative of possible code injection
watch Attempts to remove evidence of file being downloaded from the Internet
watch Code injection by writing an executable or DLL to the memory of another process
watch File has been identified by 12 AntiVirus engines on VirusTotal as malicious
watch Harvests credentials from local email clients
watch Harvests credentials from local FTP client softwares
watch Looks for the Windows Idle Time to determine the uptime
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 Checks adapter addresses which can be used to detect virtual network interfaces
notice Checks for the Locally Unique Identifier on the system for a suspicious privilege
notice HTTP traffic contains suspicious features which may be indicative of malware related traffic
notice One or more potentially interesting buffers were extracted
notice Performs some HTTP requests
notice Steals private information from local Internet browsers
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 One or more processes crashed
info Queries for the computername
info Uses Windows APIs to generate a cryptographic key

Rules (17cnts)

Level Name Description Collection
warning Generic_Malware_Zero Generic Malware binaries (upload)
watch Admin_Tool_IN_Zero Admin Tool Sysinternals binaries (upload)
watch UPX_Zero UPX packed file binaries (upload)
notice KeyLogger Run a KeyLogger memory
notice Network_SMTP_dotNet Communications smtp 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 (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 (3cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?
https://pastebin.pl/view/raw/af4dd2e8 DE Hetzner Online GmbH 168.119.93.163 3746 mailcious
pastebin.pl DE Hetzner Online GmbH 168.119.93.163 mailcious
168.119.93.163 DE Hetzner Online GmbH 168.119.93.163 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