Report - 1st0build.exe

RAT PWS .NET framework Generic Malware ASPack Malicious Packer UPX Malicious Library Antivirus AntiDebug AntiVM PE File PE32 .NET EXE
ScreenShot
Created 2021.10.15 09:50 Machine s1_win7_x6402
Filename 1st0build.exe
Type PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
AI Score
8
Behavior Score
18.2
ZERO API file : malware
VT API (file) 38 detected (Siggen15, Malicious, score, GenericKD, Unsafe, Sabsik, DropperX, confidence, ZemsilCO, cm0@auD1dQg, Kryptik, Eldorado, Attribute, HighConfidence, R002H0DJE21, homvd@0, Tool, ai score=82, kcloud, PasswordStealer, Static AI, Malicious PE, susgen)
md5 fa36788c0488fe6f660e5ea1e9ca277a
sha256 5d5a4e577c7e58c88e50a4c6553943a861ed52728255a3f549ab02d673853a70
ssdeep 768:YQBpo62G8V2D8MfjARy4l8YeETdS27iqgiqLFmbP:YMpo62xV2D8MfjARFjBV5bP
imphash f34d5f2d4577ed6d9ceec516c1f5a744
impfuzzy 3:rGsLdAIEK:tf
  Network IP location

Signature (39cnts)

Level Description
danger Disables Windows Security features
danger Executed a process and injected code into it
danger File has been identified by 38 AntiVirus engines on VirusTotal as malicious
warning Generates some ICMP traffic
watch Allocates execute permission to another process indicative of possible code injection
watch Collects information about installed applications
watch Communicates with host for which no DNS query was performed
watch Creates known SpyNet files
watch Deletes executed files from disk
watch Harvests credentials from local FTP client softwares
watch Resumed a suspended thread in a remote process potentially indicative of process injection
watch The process powershell.exe wrote an executable file to disk
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 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 Creates a shortcut to an executable file
notice Creates a suspicious process
notice Creates executable files on the filesystem
notice Drops a binary and executes it
notice Drops an executable to the user AppData folder
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 Potentially malicious URLs were found in the process memory dump
notice Queries for potentially installed applications
notice Resolves a suspicious Top Level Domain (TLD)
notice Searches running processes potentially to identify processes for sandbox evasion
notice Steals private information from local Internet browsers
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 One or more processes crashed
info Queries for the computername
info Tries to locate where the browsers are installed
info Uses Windows APIs to generate a cryptographic key

Rules (22cnts)

Level Name Description Collection
warning Generic_Malware_Zero Generic Malware binaries (download)
warning Generic_Malware_Zero Generic Malware binaries (upload)
watch Antivirus Contains references to security software binaries (download)
watch ASPack_Zero ASPack packed file binaries (download)
watch Malicious_Library_Zero Malicious_Library binaries (download)
watch Malicious_Packer_Zero Malicious Packer binaries (download)
watch UPX_Zero UPX packed file binaries (download)
watch Win32_Trojan_PWS_Net_1_Zero Win32 Trojan PWS .NET Azorult 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 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 Win_Backdoor_AsyncRAT_Zero Win Backdoor AsyncRAT binaries (upload)

Network (11cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?
http://apps.identrust.com/roots/dstrootcax3.p7c KR Korea Telecom 119.207.65.153 clean
https://cdn.discordapp.com/attachments/893177342426509335/897835449870090250/D3E31C82.jpg Unknown 162.159.129.233 clean
https://b.ckauni.ru/ RU JSC RTComm.RU 81.177.141.85 clean
https://cdn.discordapp.com/attachments/893177342426509335/897835452164366366/FBFC4F80.jpg Unknown 162.159.129.233 clean
apps.identrust.com KR Korea Telecom 119.207.65.153 clean
b.ckauni.ru RU JSC RTComm.RU 81.177.141.85 clean
cdn.discordapp.com Unknown 162.159.130.233 malware
212.193.30.193 RU Anton Mamaev 212.193.30.193 clean
81.177.141.85 RU JSC RTComm.RU 81.177.141.85 mailcious
162.159.129.233 Unknown 162.159.129.233 malware
182.162.106.26 KR LG DACOM Corporation 182.162.106.26 clean

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