Analysis
- max time kernel
149s - max time network
139s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
03/05/2026, 13:12
General
- Target 2026-05-03_211962f1ae4ab5d93f69b625760c55c0_elex_wannacry.exe
- Size 102KB
- Sample260503-qfmessds4j
- SHA256 93e2e0ba4ad3a3352b0d3d675832a8d82e501a7fe8b08f8a9e9c68813b504c58
Malware Config
Signatures
- Family: Farfli
Farfli is a Windows backdoor written in C++.
- Detects Farfli Backdoor 5 IoCs
- Detects executables containing base64 encoded User Agent 5 IoCs
- UPX dump on OEP (original entry point) 8 IoCs
- Badlisted process makes network request 8 IoCs
Network request originating from process or tool commonly abused by malware.
- ACProtect 1.3x - 1.4x DLL software 1 IoCs
Detects file using ACProtect software.
- Deletes itself 1 IoCs
- Executes dropped EXE 1 IoCs
- Loads dropped DLL 1 IoCs
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Adds Run key to start application 2 TTPs 1 IoCs
- Enumerates connected drives 3 TTPs 23 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
- Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
- UPX packed file 7 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Runs ping.exe 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-03_211962f1ae4ab5d93f69b625760c55c0_elex_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-03_211962f1ae4ab5d93f69b625760c55c0_elex_wannacry.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&c:\idvsu.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-03_211962f1ae4ab5d93f69b625760c55c0_elex_wannacry.exe"2⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 23⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
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\??\c:\idvsu.exec:\idvsu.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-03_211962f1ae4ab5d93f69b625760c55c0_elex_wannacry.exe"3⤵
- Deletes itself
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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\??\c:\windows\SysWOW64\rundll32.exec:\windows\system32\rundll32.exe "c:\bhuuj\adsuz.dll",init c:\idvsu.exe4⤵
- Badlisted process makes network request
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
idvsu.exe
adsuz.dll
memory/1500-20-0x0000000000D70000-0x0000000000E2B000-memory.dmp
memory/1500-29-0x0000000000D70000-0x0000000000E2B000-memory.dmp
memory/1500-54-0x0000000000D70000-0x0000000000E2B000-memory.dmp
memory/1500-12-0x0000000010000000-0x0000000010024000-memory.dmp
memory/1500-13-0x0000000000D70000-0x0000000000E2B000-memory.dmp
memory/1500-15-0x0000000002880000-0x0000000002886000-memory.dmp
memory/1500-16-0x0000000010000000-0x0000000010024000-memory.dmp
memory/1500-21-0x0000000010000000-0x0000000010024000-memory.dmp
memory/1500-34-0x0000000010000000-0x0000000010024000-memory.dmp
memory/1500-24-0x0000000010000000-0x0000000010024000-memory.dmp
memory/1500-27-0x0000000010000000-0x0000000010024000-memory.dmp
memory/1644-9-0x0000000000400000-0x0000000000417000-memory.dmp
memory/1644-8-0x0000000000830000-0x00000000008EB000-memory.dmp
memory/2272-3-0x0000000000400000-0x0000000000417000-memory.dmp
memory/2272-0-0x0000000000400000-0x0000000000417000-memory.dmp
memory/2272-2-0x0000000000970000-0x0000000000A2B000-memory.dmp