Report - rundll32.exe

RAT .NET EXE PE32 PE File
ScreenShot
Created 2023.05.03 09:31 Machine s1_win7_x6403
Filename rundll32.exe
Type PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
AI Score
6
Behavior Score
3.2
ZERO API file : malware
VT API (file) 16 detected (Save, malicious, confidence, 100%, ZemsilF, ny0@a4qS6fii, high confidence, score, XPACK, Infected, Static AI, Malicious PE, Sabsik, Artemis, MSIL@AI, MSIL2, mouZpMiF1a4oPl7R84Y7zA)
md5 1d81057710dc737ffee88f7f8b0ef90c
sha256 c16037f4aa5a4e8405ee97b1fe2fdc84213a7a4b908ce64e8fe23f5c2a123abc
ssdeep 3072:7/uLAg814+WRt9y2XyHVDXMfyAkoeuuRajdMF3rjxEc580F7/EvHUfvPo+GAkGtf:LrPMfyAkuuEZMF3ya809DftYdAW45I
imphash f34d5f2d4577ed6d9ceec516c1f5a744
impfuzzy 3:rGsLdAIEK:tf
  Network IP location

Signature (9cnts)

Level Description
watch Communicates with host for which no DNS query was performed
watch File has been identified by 16 AntiVirus engines on VirusTotal as malicious
notice A process attempted to delay the analysis task.
notice Allocates read-write-execute memory (usually to unpack itself)
notice Changes read-write memory protection to read-execute (probably to avoid detection when setting all RWX flags at the same time)
info Checks amount of memory in system
info Checks if process is being debugged by a debugger
info One or more processes crashed
info The executable contains unknown PE section names indicative of a packer (could be a false positive)

Rules (4cnts)

Level Name Description Collection
info Is_DotNET_EXE (no description) binaries (upload)
info IsPE32 (no description) binaries (upload)
info PE_Header_Zero PE File Signature binaries (upload)
info Win_Backdoor_AsyncRAT_Zero Win Backdoor AsyncRAT binaries (upload)

Network (1cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?
27.124.46.157 SG BGPNET Global ASN 27.124.46.157 clean

Suricata ids

PE API

IAT(Import Address Table) Library

mscoree.dll
 0x406000 _CorExeMain

EAT(Export Address Table) is none



Similarity measure (PE file only) - Checking for service failure