Report - svchostbt.exe

AsyncRAT backdoor
ScreenShot
Created 2021.03.11 16:03 Machine s1_win7_x6402
Filename svchostbt.exe
Type PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
AI Score
7
Behavior Score
15.0
ZERO API file : malware
VT API (file) 50 detected (malicious, high confidence, Generickdz, Unsafe, Save, GenericKD, Eldorado, Attribute, HighConfidence, DropperX, score, Seraph, Redline, Syig, Siggen2, R011C0DC921, Small, AGEN, ai score=100, TScope, RedLineStealer, CLOUD, Static AI, Suspicious PE, ZemsilF, bm0@aSCwV6n, GdSda, confidence, HgIASQMA)
md5 5c86689173047e2adeaf3ccc736dfa18
sha256 6d0d2af8e3bc3e1df0111605309e34fe4b17c112317f7b96b276500f3037e248
ssdeep 384:tblfG2sQoDWXsqtKBoGjGtP1+9mq+Nm7JFyPx25K//PoO:jGkiyAoyEPo/DJFy525K/d
imphash f34d5f2d4577ed6d9ceec516c1f5a744
impfuzzy 3:rGsLdAIEK:tf
  Network IP location

Signature (29cnts)

Level Description
danger File has been identified by 50 AntiVirus engines on VirusTotal as malicious
danger Connects to an IP address that is no longer responding to requests (legitimate services will remain up-and-running usually)
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 Communicates with host for which no DNS query was performed
watch Creates a windows hook that monitors keyboard input (keylogger)
watch Installs an hook procedure to monitor for mouse events
watch Installs itself for autorun at Windows startup
watch Looks for the Windows Idle Time to determine the uptime
watch One or more of the buffers contains an embedded PE file
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 Creates hidden or system file
notice Drops an executable to the user AppData folder
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 Resolves a suspicious Top Level Domain (TLD)
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 Uses Windows APIs to generate a cryptographic key

Rules (62cnts)

Level Name Description Collection
danger RedLine_Stealer_Zero RedLine stealer binaries (upload)
notice network_smtp_raw Communications smtp 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 antisb_threatExpert Anti-Sandbox checks for ThreatExpert memory
info Check_Dlls (no description) memory
info DebuggerCheck__GlobalFlags (no description) memory
info DebuggerCheck__QueryInfo (no description) memory
info DebuggerCheck__RemoteAPI (no description) memory
info DebuggerException__ConsoleCtrl (no description) memory
info DebuggerException__SetConsoleCtrl (no description) memory
info DebuggerHiding__Active (no description) memory
info DebuggerHiding__Thread (no description) memory
info disable_dep Bypass DEP memory
info IsPE32 (no description) binaries (download)
info IsPE32 (no description) binaries (upload)
info PE_Header_Zero PE File Signature Zero binaries (download)
info PE_Header_Zero PE File Signature Zero binaries (upload)
info SEH__vectored (no description) memory
info ThreadControl__Context (no description) memory
info win_hook Affect hook table memory
info create_com_service Create a COM server memory
info create_service Create a windows service memory
info cred_local Steal credential memory
info escalate_priv Escalade priviledges memory
info HasDebugData DebugData Check binaries (download)
info HasDebugData DebugData Check binaries (upload)
info HasDigitalSignature DigitalSignature Check binaries (download)
info HasOverlay Overlay Check binaries (download)
info hijack_network Hijack network configuration memory
info inject_thread Code injection with CreateRemoteThread in a remote process memory
info IsConsole (no description) binaries (download)
info IsNET_EXE (no description) binaries (download)
info IsNET_EXE (no description) binaries (upload)
info IsWindowsGUI (no description) binaries (upload)
info keylogger Run a keylogger memory
info migrate_apc APC queue tasks migration memory
info network_dga Communication using dga memory
info network_dns Communications use DNS memory
info network_dropper File downloader/dropper memory
info network_ftp Communications over FTP memory
info network_http Communications over HTTP memory
info network_p2p_win Communications over P2P network memory
info network_smtp_dotNet Communications smtp memory
info network_tcp_listen Listen for incoming communication memory
info network_tcp_socket Communications over RAW socket memory
info network_toredo Communications over Toredo network memory
info network_udp_sock Communications over UDP network memory
info screenshot Take screenshot memory
info sniff_audio Record Audio memory
info spreading_file Malware can spread east-west file memory
info spreading_share Malware can spread east-west using share drive memory
info Str_Win32_Wininet_Library Match Windows Inet API library declaration memory
info Str_Win32_Winsock2_Library Match Winsock 2 API library declaration memory
info Win_Backdoor_AsyncRAT_Zero Win Backdoor AsyncRAT binaries (download)
info Win_Backdoor_AsyncRAT_Zero Win Backdoor AsyncRAT binaries (upload)
info win_files_operation Affect private profile memory
info win_mutex Create or check mutex memory
info win_private_profile Affect private profile memory
info win_registry Affect system registries memory
info win_token Affect system token memory

Network (4cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?
https://1m12.sldov.ru/SystemNetRequestContextBaseL RU JSC RTComm.RU 81.177.139.41 clean
1m12.sldov.ru RU JSC RTComm.RU 81.177.139.41 clean
194.156.98.71 HK ADCDATA.COM 194.156.98.71 clean
81.177.139.41 RU JSC RTComm.RU 81.177.139.41 malware

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