Report - .winlogon.exe

RAT NPKI email stealer Generic Malware TEST Socket DNS Code injection KeyLogger Escalate priviledges Downloader persistence AntiDebug AntiVM PE File PE32 .NET EXE
ScreenShot
Created 2022.01.20 10:19 Machine s1_win7_x6401
Filename .winlogon.exe
Type PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
AI Score
9
Behavior Score
11.6
ZERO API file : malware
VT API (file) 33 detected (malicious, high confidence, Strictor, Unsafe, GenKryptik, FPXM, FileRepMalware, Hzdt, AgentTesla, score, R110881, Artemis, ai score=83, MachineLearning, Anomalous, Static AI, Malicious PE, Kryptik, confidence, 100%, susgen)
md5 9eedecb718c16d02f2482875051ecdec
sha256 600044cbef907e70ae8ae662eea91ac55fc66a628de49477045841f4aeaaab90
ssdeep 12288:GqPwRYdAbc0CnB56wVONQVIyMFLjSQzMlyrMbHVyVv6nnjqKoe:eYdAbc0CnqwgK6pjSQSgMbH0F6nnjqKh
imphash f34d5f2d4577ed6d9ceec516c1f5a744
impfuzzy 3:rGsLdAIEK:tf
  Network IP location

Signature (25cnts)

Level Description
danger Executed a process and injected code into it
danger File has been identified by 33 AntiVirus engines on VirusTotal as malicious
watch Allocates execute permission to another process indicative of possible code injection
watch Attempts to remove evidence of file being downloaded from the Internet
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 Harvests credentials from local email clients
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 Creates executable files on the filesystem
notice Executes one or more WMI queries
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 Steals private information from local Internet browsers
notice The binary likely contains encrypted or compressed data indicative of a packer
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 One or more processes crashed
info Queries for the computername
info Tries to locate where the browsers are installed

Rules (24cnts)

Level Name Description Collection
danger NPKI_Zero File included NPKI binaries (download)
warning Generic_Malware_Zero Generic Malware binaries (upload)
warning infoStealer_emailClients_Zero email clients info stealer memory
watch Network_Downloader File Downloader memory
notice Code_injection Code injection with CreateRemoteThread in a remote process memory
notice Escalate_priviledges Escalate priviledges memory
notice KeyLogger Run a KeyLogger memory
notice Network_DNS Communications use DNS memory
notice Network_TCP_Socket Communications over RAW Socket memory
notice Persistence Install itself for autorun at Windows startup 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 Is_DotNET_EXE (no description) binaries (upload)
info IsPE32 (no description) binaries (upload)
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 TESTYARA (no description) binaries (download)
info Win_Backdoor_AsyncRAT_Zero Win Backdoor AsyncRAT binaries (upload)

Network (4cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?
https://cdn.discordapp.com/attachments/930500886298513452/933347032742125618/435432.exe Unknown 162.159.133.233 clean
cdn.discordapp.com Unknown 162.159.129.233 malware
162.159.133.233 Unknown 162.159.133.233 malware
103.133.111.110 VN VIETNAM POSTS AND TELECOMMUNICATIONS GROUP 103.133.111.110 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