Report - ski.exe

RAT PWS .NET framework Gen2 Formbook Generic Malware task schedule Malicious Library UPX Antivirus Malicious Packer Admin Tool (Sysinternals etc ...) DNS Sniff Audio KeyLogger ScreenShot Create Service DGA Socket Steal credential Internet API Code injecti
ScreenShot
Created 2021.10.19 10:00 Machine s1_win7_x6402
Filename ski.exe
Type PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
AI Score
9
Behavior Score
15.8
ZERO API file : malware
VT API (file) 23 detected (malicious, high confidence, score, Save, confidence, 100%, Kryptik, Eldorado, Confuser, K suspicious, kcloud, Woreflint, StupidPInvoker, Unsafe, Slntscn24, bWfT6q, Static AI, Malicious PE, ZemsilF, 1m0@aij5mCp, susgen)
md5 1b465c6989637df1d5c511919c43e457
sha256 0b196e6b27ed15410bd946b1ccfd1de6b7af64a540cd0226b8eb9bd742d1b095
ssdeep 24576:nc6zD+4oOZ34MRxbnCiZXsqK+eHTesb/hyDVeb:5D+NOZoax7CSX/g
imphash f34d5f2d4577ed6d9ceec516c1f5a744
impfuzzy 3:rGsLdAIEK:tf
  Network IP location

Signature (33cnts)

Level Description
danger Connects to an IP address that is no longer responding to requests (legitimate services will remain up-and-running usually)
danger Executed a process and injected code into it
warning File has been identified by 23 AntiVirus engines on VirusTotal as malicious
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 Communicates with host for which no DNS query was performed
watch Deletes a large number of files from the system indicative of ransomware
watch Manipulates memory of a non-child process indicative of process injection
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 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 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 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 Terminates another process
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 Command line console output was observed
info Queries for the computername
info Uses Windows APIs to generate a cryptographic key

Rules (55cnts)

Level Name Description Collection
danger Win_Trojan_Formbook_Zero Used Formbook binaries (download)
warning Generic_Malware_Zero Generic Malware binaries (download)
warning Generic_Malware_Zero Generic Malware binaries (upload)
watch Admin_Tool_IN_Zero Admin Tool Sysinternals binaries (download)
watch Antivirus Contains references to security software binaries (download)
watch Malicious_Library_Zero Malicious_Library binaries (download)
watch Malicious_Packer_Zero Malicious Packer binaries (download)
watch Network_Downloader File Downloader memory
watch schtasks_Zero task schedule memory
watch UPX_Zero UPX packed file binaries (download)
watch Win32_Trojan_PWS_Net_1_Zero Win32 Trojan PWS .NET Azorult binaries (download)
watch Win32_Trojan_PWS_Net_1_Zero Win32 Trojan PWS .NET Azorult binaries (upload)
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 docx Word 2007 file format detection binaries (download)
info Is_DotNET_EXE (no description) binaries (download)
info Is_DotNET_EXE (no description) binaries (upload)
info IsDLL (no description) binaries (download)
info IsPE32 (no description) binaries (download)
info IsPE32 (no description) binaries (upload)
info JPEG_Format_Zero JPEG Format binaries (download)
info Microsoft_Office_File_Zero Microsoft Office File 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 Win32_Trojan_Gen_2_0904B0_Zero Win32 Trojan Gen binaries (download)
info Win_Backdoor_AsyncRAT_Zero Win Backdoor AsyncRAT binaries (download)
info Win_Backdoor_AsyncRAT_Zero Win Backdoor AsyncRAT binaries (upload)

Network (7cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?
http://ip-api.com/json/ US TUT-AS 208.95.112.1 clean
https://payloads-poison.000webhostapp.com/r77-x64.dll NL Hostinger International Limited 145.14.145.34 clean
payloads-poison.000webhostapp.com NL Hostinger International Limited 145.14.145.39 mailcious
ip-api.com US TUT-AS 208.95.112.1 clean
145.14.145.34 NL Hostinger International Limited 145.14.145.34 malware
91.134.207.16 FR OVH SAS 91.134.207.16 malware
208.95.112.1 US TUT-AS 208.95.112.1 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