Report - Client-0.exe

AsyncRAT backdoor
ScreenShot
Created 2021.03.24 10:11 Machine s1_win7_x6402
Filename Client-0.exe
Type PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
AI Score
10
Behavior Score
15.0
ZERO API file : malware
VT API (file) 39 detected (malicious, high confidence, EncoderNET, HgIASRUA, Thanos, Unsafe, Save, Filecoder, ZemsilF, fm0@aepBvip, Eldorado, Attribute, HighConfidence, RansomX, Crypren, S + Mal, Hakbit, Static AI, Malicious PE, AGEN, kcloud, Bladabindi, KFL0RV@gen, score, CLOUD, Outbreak, GdSda, confidence, 100%)
md5 b4282c7f3fa918a48c6cc2a8d1872764
sha256 899f48bad035165acf8869af63922619f8a901bbeb8a7fc13919ba90dd9e7768
ssdeep 1536:G718o+8A24NUZLtF1EUZXwjAb5J9lEYjXbNzHr9RfmTQX86s:G71j+8ApApQEXlb9ZXbh9RfmTQMV
imphash f34d5f2d4577ed6d9ceec516c1f5a744
impfuzzy 3:rGsLdAIEK:tf
  Network IP location

Signature (30cnts)

Level Description
danger File has been identified by 39 AntiVirus engines on VirusTotal as malicious
warning Appends a new file extension or content to 467 files indicative of a ransomware file encryption process
warning Drops 425 unknown file mime types indicative of ransomware writing encrypted files back to disk
warning Performs 467 file moves indicative of a ransomware file encryption process
watch Appends a known multi-family ransomware file extension to files that have been encrypted
watch Attempts to detect Cuckoo Sandbox through the presence of a file
watch Attempts to identify installed AV products by installation directory
watch Attempts to stop active services
watch Communicates with host for which no DNS query was performed
watch Creates a known TeslaCrypt/AlphaCrypt ransomware decryption instruction / key file.
watch Creates known Hupigon files
watch Installs itself for autorun at Windows startup
watch Looks for the Windows Idle Time to determine the uptime
watch Operates on local firewall's policies and settings
watch Writes a potential ransom message to disk
notice A process created a hidden window
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 shortcut to an executable file
notice Creates a suspicious process
notice Creates executable files on the filesystem
notice Drops an executable to the user AppData folder
notice Executes one or more WMI queries
notice Queries the disk size which could be used to detect virtual machine with small fixed size or dynamic allocation
notice Uses Windows utilities for basic Windows functionality
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

Rules (11cnts)

Level Name Description Collection
info IsPE32 (no description) binaries (download)
info IsPE32 (no description) binaries (upload)
info Lnk_Format_Zero LNK Format binaries (download)
info PE_Header_Zero PE File Signature Zero binaries (download)
info PE_Header_Zero PE File Signature Zero binaries (upload)
info IsNET_EXE (no description) binaries (download)
info IsNET_EXE (no description) binaries (upload)
info IsWindowsGUI (no description) binaries (download)
info IsWindowsGUI (no description) binaries (upload)
info Win_Backdoor_AsyncRAT_Zero Win Backdoor AsyncRAT binaries (download)
info Win_Backdoor_AsyncRAT_Zero Win Backdoor AsyncRAT binaries (upload)

Network (0cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?

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