Report - CRTbrowser.exe

AsyncRAT backdoor PWS .NET framework PE File .NET EXE PE32
ScreenShot
Created 2021.06.16 09:03 Machine s1_win7_x6401
Filename CRTbrowser.exe
Type PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
AI Score
8
Behavior Score
3.6
ZERO API file : clean
VT API (file) 49 detected (malicious, high confidence, GenericKDZ, Unsafe, Save, DropperX, Eldorado, Attribute, HighConfidence, Seraph, Malware@#14qrrds9x0ld7, R002C0WF821, muzly, kcloud, score, ai score=100, DZNVcLNe6+Y, Static AI, Suspicious PE, ZemsilF, Am0@aWXoDec, confidence, 100%, susgen)
md5 dcfbe1432bfb588cec075420669d248d
sha256 c5f44effd3378ddd55bce1c4806efa5c01dcccb6990a0d114c4e514da7460885
ssdeep 6144:anCP05hF3Te4mfcaRGh0z8HyuqXVFogybsEJJDxn0xiE:a9vDmTG6RQgylTD
imphash f34d5f2d4577ed6d9ceec516c1f5a744
impfuzzy 3:rGsLdAIEK:tf
  Network IP location

Signature (8cnts)

Level Description
danger File has been identified by 49 AntiVirus engines on VirusTotal as malicious
notice Allocates read-write-execute memory (usually to unpack itself)
notice Checks adapter addresses which can be used to detect virtual network interfaces
notice HTTP traffic contains suspicious features which may be indicative of malware related traffic
notice Performs some HTTP requests
notice Resolves a suspicious Top Level Domain (TLD)
info Checks amount of memory in system
info Checks if process is being debugged by a debugger

Rules (5cnts)

Level Name Description Collection
watch Win32_Trojan_PWS_Net_1_Zero Win32 Trojan PWS .NET Azorult binaries (upload)
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 (3cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?
https://9hj3.hidekad.ru/SystemServiceModelDescriptionOperationGeneratorCustomAttributeHelperc82987 RU JSC RTComm.RU 217.107.34.191 clean
9hj3.hidekad.ru RU JSC RTComm.RU 217.107.34.191 clean
217.107.34.191 RU JSC RTComm.RU 217.107.34.191 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