Report - regasm.exe

Malicious Library .NET framework(MSIL) PWS SMTP KeyLogger AntiDebug AntiVM PE File .NET EXE PE32
ScreenShot
Created 2024.08.08 11:22 Machine s1_win7_x6403
Filename regasm.exe
Type PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
AI Score
7
Behavior Score
14.8
ZERO API file : malware
VT API (file) 31 detected (AIDetectMalware, Jalapeno, Unsafe, Save, Malcode, gdn34, malicious, high confidence, Kryptik, AMAY, PackedNET, Real Protect, Krypt, Static AI, Malicious PE, ai score=83, Detected, TrojanLoader, DaVinci, AgentTesla, GenKryptik, FQQD, GdSda, confidence, 100%)
md5 62b9f8d4c98febbcd68e635c14d8d882
sha256 e93063292dbb2c3209541ea13e57d0cca3225f35eb18977d2b3400a97255a49d
ssdeep 12288:btJJZsVISjztCzxhgAhxAFmu52iOYTH14FErBxLef:btJ3sVIUzkTgSqFF5bH
imphash f34d5f2d4577ed6d9ceec516c1f5a744
impfuzzy 3:rGsLdAIEK:tf
  Network IP location

Signature (31cnts)

Level Description
danger Executed a process and injected code into it
danger File has been identified by 31 AntiVirus engines on VirusTotal as malicious
watch A process attempted to delay the analysis task.
watch Allocates execute permission to another process indicative of possible code injection
watch Attempts to create or modify system certificates
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 Harvests credentials from local email clients
watch Harvests credentials from local FTP client softwares
watch Harvests information related to installed instant messenger clients
watch Makes SMTP requests
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 Connects to a Dynamic DNS Domain
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 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 One or more processes crashed
info Queries for the computername
info This executable has a PDB path
info Uses Windows APIs to generate a cryptographic key

Rules (17cnts)

Level Name Description Collection
watch Malicious_Library_Zero Malicious_Library binaries (upload)
watch Win32_Trojan_PWS_Net_1_Zero Win32 Trojan PWS .NET Azorult binaries (upload)
notice Generic_PWS_Memory_Zero PWS Memory memory
notice KeyLogger Run a KeyLogger memory
notice Network_SMTP_dotNet Communications smtp 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

Network (10cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?
http://checkip.dyndns.org/ Unknown 132.226.247.73 clean
https://reallyfreegeoip.org/xml/175.208.134.152 US CLOUDFLARENET 104.21.67.152 clean
api.telegram.org GB Telegram Messenger Inc 149.154.167.220 mailcious
smtp.coxenregy.com US PUBLIC-DOMAIN-REGISTRY 208.91.198.143 clean
reallyfreegeoip.org US CLOUDFLARENET 172.67.177.134 clean
checkip.dyndns.org US ORACLE-BMC-31898 193.122.130.0 clean
193.122.6.168 US ORACLE-BMC-31898 193.122.6.168 clean
208.91.199.224 US PUBLIC-DOMAIN-REGISTRY 208.91.199.224 mailcious
104.21.67.152 US CLOUDFLARENET 104.21.67.152 clean
149.154.167.220 GB Telegram Messenger Inc 149.154.167.220 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