Report - pupa.pdf.lnk

Gen1 Generic Malware Antivirus Malicious Packer Malicious Library UPX AntiDebug AntiVM GIF Format Lnk Format PowerShell PE File PE32
ScreenShot
Created 2025.05.02 09:03 Machine s1_win7_x6401
Filename pupa.pdf.lnk
Type MS Windows shortcut, Item id list present, Has Relative path, Has command line arguments, Icon number=11, ctime=Sun Dec 31 15:32:08 1600, mtime=Sun Dec 31 15:32:08 1600, atime=Sun Dec 31 15:32:08 1600, length=0, window=hidenormalshowminimized
AI Score Not founds Behavior Score
8.8
ZERO API
VT API (file)
md5 21001f61225587ddc477861c8c6194e9
sha256 a6c105746ed8704d74b793ef0b04c8eac1e48fbb34db69d7c8e43a9a43ec82a6
ssdeep 24:8Ayw/BHYVKVWO+/CWR62fVTlP4HOCgAXuoUeVdd79dsoEZ/7QAMN5:8y5al62fVRPKxdJ9ha7Q
imphash
impfuzzy
  Network IP location

Signature (20cnts)

Level Description
danger The process powershell.exe wrote an executable file to disk which it then attempted to execute
watch Attempts to create or modify system certificates
watch Creates a suspicious Powershell process
watch Disables proxy possibly for traffic interception
watch One or more non-whitelisted processes were created
watch Resumed a suspended thread in a remote process potentially indicative of process injection
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)
notice Checks for the Locally Unique Identifier on the system for a suspicious privilege
notice Creates a shortcut to an executable file
notice Creates a suspicious process
notice Drops an executable to the user AppData folder
notice One or more potentially interesting buffers were extracted
notice Performs some HTTP requests
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 Command line console output was observed
info Queries for the computername
info Uses Windows APIs to generate a cryptographic key

Rules (21cnts)

Level Name Description Collection
danger Win32_Trojan_Gen_1_0904B0_Zero Win32 Trojan Emotet binaries (download)
warning Generic_Malware_Zero Generic Malware binaries (download)
warning Generic_Malware_Zero Generic Malware binaries (upload)
watch Antivirus Contains references to security software binaries (download)
watch Antivirus Contains references to security software binaries (upload)
watch Malicious_Library_Zero Malicious_Library binaries (download)
watch Malicious_Packer_Zero Malicious Packer binaries (download)
watch UPX_Zero UPX packed file binaries (download)
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 IsPE32 (no description) binaries (download)
info lnk_file_format Microsoft Windows Shortcut File Format binaries (upload)
info Lnk_Format_Zero LNK Format binaries (upload)
info PE_Header_Zero PE File Signature binaries (download)
info PowerShell PowerShell script scripts
info SEH__vectored (no description) memory
info ThreadControl__Context (no description) memory

Network (6cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?
https://www.4sync.com/web/directDownload/gPp9O6FS/LO8xSpi2.e58d1db51e9c61f9e939f307fb0c0d77 US WZCOM 204.155.149.140
https://dc438.4sync.com/download/gPp9O6FS/pupa.html?dsid=LO8xSpi2.e58d1db51e9c61f9e939f307fb0c0d77&sbsr=b53cf2d6dee9ce9b8ba3d0c01f4b8732b47&bip=MTIxLjEzMy4xMjguMQ&lgfp=40 US WZCOM 199.101.133.66
www.4sync.com US WZCOM 199.101.134.238
dc438.4sync.com US WZCOM 199.101.133.66
199.101.133.66 US WZCOM 199.101.133.66
204.155.149.140 US WZCOM 204.155.149.140

Suricata ids



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