Analysis
- max time kernel
149s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
15/04/2026, 11:06
General
- Target 2026-04-15_7749a0d2fbe8544ab482a4076776b0c2_elex_wannacry.exe
- Size 434KB
- Sample260415-m7dp7ae19x
- SHA256 8374af9902c132b40866f74bd1952a035d00186596e9ed76e63001e7675a87e5
Malware Config
Signatures
- Family: Farfli
Farfli is a Windows backdoor written in C++.
- Detects Farfli Backdoor 2 IoCs
- Detects executables containing base64 encoded User Agent 2 IoCs
- Badlisted process makes network request 8 IoCs
Network request originating from process or tool commonly abused by malware.
- 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.
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Drops file in Program Files directory 2 IoCs
- 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 64 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\2026-04-15_7749a0d2fbe8544ab482a4076776b0c2_elex_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2026-04-15_7749a0d2fbe8544ab482a4076776b0c2_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:\Users\Admin\AppData\Local\Temp\\epixuavhn.exe "C:\Users\Admin\AppData\Local\Temp\2026-04-15_7749a0d2fbe8544ab482a4076776b0c2_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:\Users\Admin\AppData\Local\Temp\epixuavhn.exeC:\Users\Admin\AppData\Local\Temp\\epixuavhn.exe "C:\Users\Admin\AppData\Local\Temp\2026-04-15_7749a0d2fbe8544ab482a4076776b0c2_elex_wannacry.exe"3⤵
- Deletes itself
- Executes dropped EXE
- Drops file in Program Files directory
- 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:\Program Files\nxstp\pbztt.dll",ZipCompress C:\Users\Admin\AppData\Local\Temp\epixuavhn.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)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- 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
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Downloads
epixuavhn.exe
pbztt.dll
memory/4892-0-0x0000000000400000-0x000000000046D000-memory.dmp
memory/4892-3-0x0000000000400000-0x000000000046D000-memory.dmp
memory/4892-2-0x00000000009E0000-0x0000000000ABF000-memory.dmp
memory/4972-9-0x00000000008D0000-0x00000000009AF000-memory.dmp
memory/4972-10-0x0000000000400000-0x000000000046D000-memory.dmp
memory/4972-7-0x0000000000400000-0x000000000046D000-memory.dmp
memory/5836-14-0x000000001004A000-0x000000001004B000-memory.dmp
memory/5836-13-0x0000000010000000-0x0000000010065000-memory.dmp
memory/5836-15-0x0000000010000000-0x0000000010065000-memory.dmp
memory/5836-17-0x0000000010000000-0x0000000010065000-memory.dmp
memory/5836-18-0x00000000013C0000-0x000000000149F000-memory.dmp