popup

Report - Stubchik.exe

RAT Generic Malware Malicious Packer DGA DNS Socket Create Service Sniff Audio Escalate priviledges KeyLogger Code injection HTTP Internet API FTP ScreenShot Http API Steal credential Downloader P2P AntiDebug AntiVM PE File PE32 PE64 OS Processor Check
  1. Resubmit analysis
  2. Detailed report
ScreenShot
Created 2021.09.20 09:44 Machine s1_win7_x6401
Filename Stubchik.exe
Type PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows
AI Score
4
 Behavior Score
12.6
ZERO API file : malware
VT API (file) 29 detected (AIDetect, malware2, Razy, Unsafe, malicious, Attribute, HighConfidence, GenKryptik, FKHS, TrojanX, Generic@ML, RDML, gcGNDPpHmx85, rcIUhgf+g, Score, ZPACK, CoinMinerInj, BScope, Nitol, ai score=83, MachineLearning, Anomalous, 100%, Tiny)
md5 d5d4f07e59ffad621f322b68c12e411e
sha256 42506f9e15ffdab6fce67556b602075ff779e2e84c6a40058a3941f0f71071b2
ssdeep 49152:8qgCWU4cUagFjTlMnE1mrswa9dKsxGzVCRRU30ZLozGEXwacq3QTPXq+2:8qgzjrDFP+VrvaJx0C03xi+rgDq
imphash 2a2a662be9dffc461398e7c94d0b55b4
impfuzzy 6:HbJq4wX0pyYJxSBS0H5sD4sIW0oFUAliPEcn:7Jq4wMY58xaPXn
  Network IP location

Signature (30cnts)

Level Description
warning File has been identified by 29 AntiVirus engines on VirusTotal as malicious
warning Generates some ICMP traffic
watch Attempts to create or modify system certificates
watch Communicates with host for which no DNS query was performed
watch Installs itself for autorun at Windows startup
watch Resumed a suspended thread in a remote process potentially indicative of process injection
watch Uses Sysinternals tools in order to add additional command line functionality
notice A process attempted to delay the analysis task.
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 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 Looks up the external IP address
notice One or more potentially interesting buffers were extracted
notice Performs some HTTP requests
notice Queries the disk size which could be used to detect virtual machine with small fixed size or dynamic allocation
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 Collects information to fingerprint the system (MachineGuid
info Command line console output was observed
info One or more processes crashed
info Queries for the computername

Rules (40cnts)

Level Name Description Collection
warning Generic_Malware_Zero Generic Malware binaries (download)
watch Malicious_Packer_Zero Malicious Packer binaries (download)
watch Network_Downloader File Downloader memory
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 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 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 IsPE32 (no description) binaries (upload)
info IsPE64 (no description) binaries (download)
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 win_hook Affect hook table memory
info Win_Backdoor_AsyncRAT_Zero Win Backdoor AsyncRAT binaries (download)

Network (9cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?
http://ip-api.com/line/?fields=hosting
whois
US TUT-AS 208.95.112.1 clean
http://62.109.1.30/triggers/vm_.php?nNdbNrr8z79RMLf1fFId=YoCVXIkRnMUFyTxLHSg92At0Ro6v&3sBRuPjaFzjG=LvpLY2sqXwle9X4LEtLz6t&SyDEOuCd72Kz8LFP=Dog6&e8f6de43394a8e2ef93b201a0d2ec922=c0280c4c3f572aabfa038560a3f515da&65ab24948c084368808c084126a043f5=QNkZTNzcDOwM
whois
RU JSC The First 62.109.1.30 3585 mailcious
http://62.109.1.30/triggers/vm_.php?nNdbNrr8z79RMLf1fFId=YoCVXIkRnMUFyTxLHSg92At0Ro6v&3sBRuPjaFzjG=LvpLY2sqXwle9X4LEtLz6t&SyDEOuCd72Kz8LFP=Dog6&02a02393cf420479d23438ff09302b99=jNDZkFTN2EWO4ITZiFGZ0UWYlVGZyM2NmVGM4MzNzU2Y4QjNmhDNjBDMyEjM1ETNyQTOxUTM&65ab2
whois
RU JSC The First 62.109.1.30 3585 mailcious
https://ipinfo.io/json
whois
US GOOGLE 34.117.59.81 clean
ipinfo.io
whois
US GOOGLE 34.117.59.81 clean
ip-api.com
whois
US TUT-AS 208.95.112.1 clean
34.117.59.81
whois
US GOOGLE 34.117.59.81 clean
62.109.1.30
whois
RU JSC The First 62.109.1.30 mailcious
208.95.112.1
whois
US TUT-AS 208.95.112.1 clean

Suricata ids

ET POLICY External IP Lookup ip-api.com
ET POLICY Possible External IP Lookup Domain Observed in SNI (ipinfo. io)
SSLBL: Malicious JA3 SSL-Client Fingerprint detected (Tofsee)
ET POLICY Possible External IP Lookup SSL Cert Observed (ipinfo.io)

PE API

IAT(Import Address Table) Library

msvcrt.dll
 0x6af6bc strlen
 0x6af6c0 malloc
 0x6af6c4 fopen
 0x6af6c8 fwrite
 0x6af6cc fclose
 0x6af6d0 memset
 0x6af6d4 getenv
 0x6af6d8 sprintf
 0x6af6dc __argc
 0x6af6e0 __argv
 0x6af6e4 _environ
 0x6af6e8 _XcptFilter
 0x6af6ec __set_app_type
 0x6af6f0 _controlfp
 0x6af6f4 __getmainargs
 0x6af6f8 exit
kernel32.dll
 0x6af700 CreateProcessA
 0x6af704 CloseHandle
 0x6af708 SetUnhandledExceptionFilter

EAT(Export Address Table) is none


Similarity measure (PE file only) - Checking for service failure