Report - CBCbrowser.exe

AsyncRAT backdoor PWS .NET framework BitCoin AntiDebug AntiVM .NET EXE PE File PE32 MSOffice File
ScreenShot
Created 2021.05.18 09:57 Machine s1_win7_x6402
Filename CBCbrowser.exe
Type PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
AI Score
10
Behavior Score
12.8
ZERO API file : malware
VT API (file)
md5 5cdf8ce1bcc26bf8473f09447cfa0c47
sha256 2f0b266231e69b5c19a4f0a00951bc4b3473c7557576675fe1bb4b1579845ae4
ssdeep 3072:0C6gIlfvaJmJs7hE7cuOTtH8ksUX3Btccyu51XnJg7bkFl2g:/6eJGs7hEpM8khnBtJyu5g74Fl2
imphash f34d5f2d4577ed6d9ceec516c1f5a744
impfuzzy 3:rGsLdAIEK:tf
  Network IP location

Signature (29cnts)

Level Description
danger Executed a process and injected code into it
warning Generates some ICMP traffic
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 Collects information about installed applications
watch Communicates with host for which no DNS query was performed
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 An application raised an exception which may be indicative of an exploit crash
notice Changes read-write memory protection to read-execute (probably to avoid detection when setting all RWX flags at the same time)
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 Queries for potentially installed applications
notice Resolves a suspicious Top Level Domain (TLD)
notice Sends data using the HTTP POST Method
notice Steals private information from local Internet browsers
notice Uses Windows utilities for basic Windows functionality
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 Tries to locate where the browsers are installed
info Uses Windows APIs to generate a cryptographic key

Rules (15cnts)

Level Name Description Collection
watch Win32_Trojan_PWS_Net_1_Zero Win32 Trojan PWS .NET Azorult binaries (upload)
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 Microsoft_Office_File_Zero Microsoft Office File binaries (download)
info PE_Header_Zero PE File Signature binaries (upload)
info SEH__vectored (no description) memory
info ThreadControl__Context (no description) memory
info Virtual_currency_Zero Virtual currency memory
info Win_Backdoor_AsyncRAT_Zero Win Backdoor AsyncRAT binaries (upload)

Network (13cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?
http://87.251.71.193// RU RM Engineering LLC 87.251.71.193 clean
https://iplogger.org/1uP9s7 DE Hetzner Online GmbH 88.99.66.31 clean
https://42nn.hellomir.ru/SystemServiceModelChannelsHttpInput54082 RU JSC RTComm.RU 217.107.34.191 clean
https://iplogger.org/favicon.ico DE Hetzner Online GmbH 88.99.66.31 clean
https://api.ip.sb/geoip US CLOUDFLARENET 104.26.13.31 clean
api.ip.sb US CLOUDFLARENET 172.67.75.172 clean
42nn.hellomir.ru RU JSC RTComm.RU 217.107.34.191 clean
iplogger.org DE Hetzner Online GmbH 88.99.66.31 mailcious
87.251.71.193 RU RM Engineering LLC 87.251.71.193 clean
88.99.66.31 DE Hetzner Online GmbH 88.99.66.31 mailcious
104.26.13.31 US CLOUDFLARENET 104.26.13.31 clean
37.187.95.110 FR OVH SAS 37.187.95.110 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