popup

Report - kswb.exe

AgentTesla PWS .NET framework browser info stealer Generic Malware Google Chrome User Data Antivirus Socket Create Service Sniff Audio Escalate priviledges KeyLogger Code injection Downloader AntiDebug AntiVM PE File .NET EXE PE32
  1. Resubmit analysis
  2. Detailed report
ScreenShot
Created 2021.09.03 09:16 Machine s1_win7_x6401
Filename kswb.exe
Type PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
AI Score
11
 Behavior Score
10.0
ZERO API file : malware
VT API (file) 27 detected (Nitol, malicious, high confidence, AgentTesla, FDCM, Unsafe, Save, confidence, Attribute, HighConfidence, Kryptik, ACOO, Hwwg, Static AI, Malicious PE, kcloud, Wacatac, ZemsilF, am0@aSX1Mdd, Outbreak, Score, susgen)
md5 9ac22682b4c95a59b075eef78c576260
sha256 b56242ce9875402fca36f6d831072462bcf7b0996c2a98d048455459485ade1d
ssdeep 48:6t8ZNeO1ONPo8Jm6lRCQ0o7jhIBpZsjyiv2osgTKePln6EOulZjtGWuqXSfbNtm:tAvmybN79y+jn3TKeNn6KVGBzNt
imphash f34d5f2d4577ed6d9ceec516c1f5a744
impfuzzy 3:rGsLdAIEK:tf
  Network IP location

Signature (37cnts)

Level Description
danger The process powershell.exe wrote an executable file to disk which it then attempted to execute
danger Executed a process and injected code into it
danger Powershell Downloader DFSP detected
warning File has been identified by 27 AntiVirus engines on VirusTotal as malicious
watch Allocates execute permission to another process indicative of possible code injection
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 Creates a suspicious Powershell process
watch Manipulates memory of a non-child process indicative of process injection
watch Network communications indicative of a potential document or script payload download was initiated by the process powershell.exe
watch One or more non-whitelisted processes were created
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 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 shortcut to an executable file
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 One or more potentially interesting buffers were extracted
notice Performs some HTTP requests
notice Poweshell is sending data to a remote host
notice Terminates another process
notice URL downloaded by powershell script
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 Queries for the computername
info Uses Windows APIs to generate a cryptographic key

Rules (31cnts)

Level Name Description Collection
warning Generic_Malware_Zero Generic Malware binaries (download)
warning Generic_Malware_Zero Generic Malware binaries (upload)
warning infoStealer_browser_Zero browser info stealer memory
watch Antivirus Contains references to security software binaries (download)
watch Chrome_User_Data_Check_Zero Google Chrome User Data Check memory
watch Network_Downloader File Downloader memory
watch Win32_Trojan_PWS_Net_1_Zero Win32 Trojan PWS .NET Azorult binaries (download)
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 Network_TCP_Socket Communications over RAW Socket memory
notice Sniff_Audio Record Audio 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 (download)
info Is_DotNET_EXE (no description) binaries (upload)
info IsPE32 (no description) binaries (download)
info IsPE32 (no description) binaries (upload)
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 PowershellDFSP Rule for Powershell DFSP detection scripts
info PowershellDI Extract Download/Invoke calls from powershell script scripts
info Win_Trojan_agentTesla_Zero Win.Trojan.agentTesla memory

Network (3cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?
http://198.23.251.109/kswb/vbc.exe
whois
US AS-COLOCROSSING 198.23.251.109 malware
45.137.22.77
whois
NL RootLayer Web Services Ltd. 45.137.22.77 clean
198.23.251.109
whois
US AS-COLOCROSSING 198.23.251.109 malware

Suricata ids

ET INFO Executable Download from dotted-quad Host
ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
ET POLICY PE EXE or DLL Windows file download HTTP
ET INFO Executable Retrieved With Minimal HTTP Headers - Potential Second Stage Download
ET HUNTING SUSPICIOUS Dotted Quad Host MZ Response

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