Report - file.txt

AsyncRAT backdoor
ScreenShot
Created 2021.04.16 18:07 Machine s1_win7_x6401
Filename file.txt
Type PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
AI Score
9
Behavior Score
15.4
ZERO API file : malware
VT API (file) 14 detected (malicious, high confidence, Artemis, Kryptik, ali2000016, Attribute, HighConfidence, a variant of Generik, JNYPLQU, FileRepMalware, confidence)
md5 1f130569a8373dfae4f387d4757769cf
sha256 ed5872028e073a00549aa0ffe151dc4d641eae83694c1fcc3dc545183c091d97
ssdeep 6144:hR5DOD71cP9H5oRaZVhYEQhAtb05fyYNTPktoukKWueah:Zi3KfoRaP6EQStb0XJahX3
imphash f34d5f2d4577ed6d9ceec516c1f5a744
impfuzzy 3:rGsLdAIEK:tf
  Network IP location

Signature (34cnts)

Level Description
danger Executed a process and injected code into it
warning Generates some ICMP traffic
watch Allocates execute permission to another process indicative of possible code injection
watch Attempts to identify installed AV products by installation directory
watch Code injection by writing an executable or DLL to the memory of another process
watch Collects information about installed applications
watch Communicates with host for which no DNS query was performed
watch Executes one or more WMI queries
watch File has been identified by 14 AntiVirus engines on VirusTotal as malicious
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 for the Locally Unique Identifier on the system for a suspicious privilege
notice Creates a suspicious process
notice Executes one or more WMI queries which can be used to identify virtual machines
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 Queries for potentially installed applications
notice Queries the disk size which could be used to detect virtual machine with small fixed size or dynamic allocation
notice Resolves a suspicious Top Level Domain (TLD)
notice Searches running processes potentially to identify processes for sandbox evasion
notice Sends data using the HTTP POST Method
notice Steals private information from local Internet browsers
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 One or more processes crashed
info Queries for the computername
info This executable has a PDB path
info Tries to locate where the browsers are installed

Rules (32cnts)

Level Name Description Collection
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 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 IsPE32 (no description) binaries (upload)
info JPEG_Format_Zero JPEG Format binaries (download)
info PE_Header_Zero PE File Signature Zero binaries (upload)
info SEH__vectored (no description) memory
info ThreadControl__Context (no description) memory
info HasDebugData DebugData Check binaries (upload)
info inject_thread Code injection with CreateRemoteThread in a remote process memory
info IsNET_EXE (no description) binaries (upload)
info IsPacked Entropy Check binaries (upload)
info IsWindowsGUI (no description) binaries (upload)
info keylogger Run a keylogger memory
info network_dns Communications use DNS memory
info network_dropper File downloader/dropper memory
info network_http Communications over HTTP memory
info network_tcp_listen Listen for incoming communication memory
info network_tcp_socket Communications over RAW socket memory
info screenshot Take screenshot memory
info Str_Win32_Wininet_Library Match Windows Inet API library declaration memory
info Str_Win32_Winsock2_Library Match Winsock 2 API library declaration memory
info Win_Backdoor_AsyncRAT_Zero Win Backdoor AsyncRAT binaries (upload)
info win_files_operation Affect private profile memory
info win_mutex Create or check mutex memory
info win_registry Affect system registries memory
info win_token Affect system token memory

Network (10cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?
http://vladisfoxlink.ru/support/enfr/gate.php?gpp=1 SG Security Firewall Ltd 45.85.90.7 clean
http://vladisfoxlink.ru/support/enfr/gate.php?ct=1 SG Security Firewall Ltd 45.85.90.7 clean
http://vladisfoxlink.ru/support/enfr/gate.php?1df=01A01720988C SG Security Firewall Ltd 45.85.90.7 clean
http://vladisfoxlink.ru/support/enfr/gate.php?p=1 SG Security Firewall Ltd 45.85.90.7 clean
http://vladisfoxlink.ru/support/enfr/gate.php SG Security Firewall Ltd 45.85.90.7 clean
http://vladisfoxlink.ru/support/enfr/gate.php?pl=1 SG Security Firewall Ltd 45.85.90.7 clean
vladisfoxlink.ru SG Security Firewall Ltd 45.85.90.7 mailcious
45.85.90.7 SG Security Firewall Ltd 45.85.90.7 clean
88.99.66.31 DE Hetzner Online GmbH 88.99.66.31 mailcious
131.153.76.130 SG PhoenixNAP 131.153.76.130 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