Report - wwerfyr.exe

PWS Loki[b] Loki[m] .NET framework RAT Generic Malware DNS Socket KeyLogger HTTP Internet API ScreenShot Http API AntiDebug AntiVM PE File .NET EXE PE32
ScreenShot
Created 2021.08.05 09:48 Machine s1_win7_x6402
Filename wwerfyr.exe
Type PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
AI Score
5
Behavior Score
12.2
ZERO API file : malware
VT API (file) 40 detected (Malicious, high confidence, score, GenericKD, Unsafe, TrojanPSW, Kryptik, Eldorado, ACEZ, Coins, TrojanX, tvbyf@0, Outbreak, jwufx, PSWTroj, kcloud, Woreflint, FCSO, ai score=84, R06CH0CH321, Static AI, Malicious PE, susgen, ZemsilF, Km0@aWzAWWb, GdSda, confidence, 100%, HwMAueAA)
md5 3693d70402a26fa0810d8ea85c95c954
sha256 9a4e3fd33a4d3f520dfacdd0c80526b550b9235d999c2cc438eda0f204c8cae6
ssdeep 12288:WH+2g21CB8nlb8uYhkOH7OlgUoL/guZm:cJY8lb853+oT9m
imphash f34d5f2d4577ed6d9ceec516c1f5a744
impfuzzy 3:rGsLdAIEK:tf
  Network IP location

Signature (26cnts)

Level Description
danger File has been identified by 40 AntiVirus engines on VirusTotal as malicious
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 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 Looks for the Windows Idle Time to determine the uptime
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 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 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 Potentially malicious URLs were found in the process memory dump
notice Sends data using the HTTP POST Method
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 Uses Windows APIs to generate a cryptographic key

Rules (22cnts)

Level Name Description Collection
danger Win32_PWS_Loki_Zero Win32 PWS Loki memory
warning Generic_Malware_Zero Generic Malware binaries (upload)
watch Win32_Trojan_PWS_Net_1_Zero Win32 Trojan PWS .NET Azorult binaries (upload)
notice KeyLogger Run a KeyLogger memory
notice Network_DNS Communications use DNS memory
notice Network_HTTP Communications over HTTP memory
notice Network_TCP_Socket Communications over RAW Socket memory
notice ScreenShot Take ScreenShot 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 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 (6cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?
http://www.epcdiagnostic.com/wp-content/rem/cach/index.php NL Abelohost BV 185.221.202.118 clean
https://www.bing.com/ US MICROSOFT-CORP-MSN-AS-BLOCK 204.79.197.200 clean
www.epcdiagnostic.com NL Abelohost BV 185.221.202.118 clean
www.google.com US GOOGLE 142.250.196.132 clean
142.250.199.68 US GOOGLE 142.250.199.68 clean
185.221.202.118 NL Abelohost BV 185.221.202.118 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