Report - sg-3nlJH.exe

AsyncRAT backdoor SMTP KeyLogger AntiDebug AntiVM PE File .NET EXE PE32
ScreenShot
Created 2021.06.02 18:04 Machine s1_win7_x6402
Filename sg-3nlJH.exe
Type PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
AI Score
9
Behavior Score
13.2
ZERO API file : malware
VT API (file) 28 detected (malicious, high confidence, PackedNET, Unsafe, Seraph, Kryptik, confidence, ZemsilF, um0@aKc55Ve, Eldorado, Attribute, HighConfidence, ABEZ, FileRepMalware, Wacatac, SnakeKeyLogger, DHONU7, score, Artemis, R002H0DF121, Static AI, Malicious PE, susgen)
md5 41a5ea7052e4e49b5f159511f4f3a1ec
sha256 b78e8c8f33d7fbcb08cccf167a5723025f9010b8c049f469d9480758491d85a2
ssdeep 6144:1JwmU71HbaLnZcifqfLAVm+wTMVFwXpL8ESICIEXP65L7VfOdW:c1Z+LnZcqqEL9HYJ8EHxFOd
imphash f34d5f2d4577ed6d9ceec516c1f5a744
impfuzzy 3:rGsLdAIEK:tf
  Network IP location

Signature (28cnts)

Level Description
danger Executed a process and injected code into it
warning File has been identified by 28 AntiVirus engines on VirusTotal as malicious
watch Allocates execute permission to another process indicative of possible code injection
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 Communicates with host for which no DNS query was performed
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 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 Uses Windows APIs to generate a cryptographic key

Rules (15cnts)

Level Name Description Collection
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
info Win_Backdoor_AsyncRAT_Zero Win Backdoor AsyncRAT binaries (upload)

Network (6cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?
http://checkip.dyndns.org/ US DYNDNS 162.88.193.70 clean
https://freegeoip.app/xml/175.208.134.150 US CLOUDFLARENET 172.67.188.154 clean
freegeoip.app US CLOUDFLARENET 104.21.19.200 clean
checkip.dyndns.org US DYNDNS 216.146.43.71 clean
216.146.43.70 US DYNDNS 216.146.43.70 suspicious
172.67.188.154 US CLOUDFLARENET 172.67.188.154 clean

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