Report - vbc.exe

PWS Loki .NET framework AsyncRAT backdoor Malicious Library DNS Socket AntiDebug AntiVM PE File .NET EXE PE32
ScreenShot
Created 2021.04.30 09:15 Machine s1_win7_x6402
Filename vbc.exe
Type PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
AI Score
8
Behavior Score
14.6
ZERO API file : clean
VT API (file) 7 detected (Malcode, gdn30, Malicious, FileRepMetagen, score)
md5 44fd8894c4e507cafa1c767995dd8927
sha256 d56c4fc0b01ab0abf9da9858aaa7512a3c2a3a193647eb93f670d994e705702a
ssdeep 24576:orsUKkIbk0xjiUpk/Ddewt7Z9ZLaeULv:SsUKkIufdeY9Ye
imphash f34d5f2d4577ed6d9ceec516c1f5a744
impfuzzy 3:rGsLdAIEK:tf
  Network IP location

Signature (33cnts)

Level Description
danger Executed a process and injected code into it
watch A process attempted to delay the analysis task.
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 Harvests credentials from local email clients
watch Harvests credentials from local FTP client softwares
watch Harvests information related to installed instant messenger clients
watch Potential code injection by writing to the memory of another process
watch Putty Files
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 File has been identified by 7 AntiVirus engines on VirusTotal as malicious
notice HTTP traffic contains suspicious features which may be indicative of malware related traffic
notice Moves the original executable to a new location
notice One or more potentially interesting buffers were extracted
notice Performs some HTTP requests
notice Potentially malicious URLs were found in the process memory dump
notice Queries the disk size which could be used to detect virtual machine with small fixed size or dynamic allocation
notice Sends data using the HTTP POST Method
notice Starts servers listening
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 Queries for the computername
info This executable has a PDB path
info Tries to locate where the browsers are installed
info Uses Windows APIs to generate a cryptographic key

Rules (17cnts)

Level Name Description Collection
danger Win32_PWS_Loki_Zero Win32 PWS Loki memory
watch Malicious_Library_Zero Malicious_Library binaries (upload)
watch Win32_Trojan_PWS_Net_1_Zero Win32 Trojan PWS .NET Azorult binaries (upload)
notice Network_DNS Communications use DNS memory
notice Network_TCP_Socket Communications over RAW Socket 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_Backdoor_AsyncRAT_Zero Win Backdoor AsyncRAT binaries (upload)

Network (3cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?
http://eyecos.ga/chang/gate.php US GOOGLE 35.247.234.230 1185 mailcious
eyecos.ga US GOOGLE 35.247.234.230 mailcious
35.247.234.230 US GOOGLE 35.247.234.230 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