Analysis
- max time kernel
149s - max time network
149s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
31/01/2026, 01:28
General
- Target 2026-01-31_0a5db0a5765ff2511e2ee416eb14d1a9_elex_wannacry.exe
- Size 320KB
- Sample260131-bv7lysew6d
- SHA256 f5b6afdeccd838c4d1e430823071cc68b675b19ebf30fd78c0d88ed4a09077c9
Malware Config
Signatures
- Fatal Rat payload 3 IoCs
- FatalRat
FatalRat is a modular infostealer family written in C++ first appearing in June 2021.
- Fatalrat family
- Adds Run key to start application 2 TTPs 2 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Using powershell.exe command.
- Drops file in System32 directory 1 IoCs
- Enumerates processes with tasklist 1 TTPs 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 7 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-01-31_0a5db0a5765ff2511e2ee416eb14d1a9_elex_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2026-01-31_0a5db0a5765ff2511e2ee416eb14d1a9_elex_wannacry.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -Command "$regPath = 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Run';if (-not (Test-Path $regPath)) { New-Item -Path $regPath -Force };Set-ItemProperty -Path $regPath -Name 'THREAD_ATTACH' -Value 'C:\Users\Admin\AppData\Local\Temp\2026-01-31_0a5db0a5765ff2511e2ee416eb14d1a9_elex_wannacry.exe' -Type String"2⤵
- Adds Run key to start application
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c \C5059241.bat2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\tasklist.exetasklist3⤵
- Enumerates processes with tasklist
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\find.exefind /i "2026-01-31_0a5db0a5765ff2511e2ee416eb14d1a9_elex_wannacry.exe"3⤵
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4884 -s 13402⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4884 -ip 48841⤵
-
C:\Users\Admin\AppData\Local\Temp\2026-01-31_0a5db0a5765ff2511e2ee416eb14d1a9_elex_wannacry.exeC:\Users\Admin\AppData\Local\Temp\2026-01-31_0a5db0a5765ff2511e2ee416eb14d1a9_elex_wannacry.exe1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -Command "$regPath = 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Run';if (-not (Test-Path $regPath)) { New-Item -Path $regPath -Force };Set-ItemProperty -Path $regPath -Name 'THREAD_ATTACH' -Value 'C:\Users\Admin\AppData\Local\Temp\2026-01-31_0a5db0a5765ff2511e2ee416eb14d1a9_elex_wannacry.exe' -Type String"2⤵
- Adds Run key to start application
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
C5059241.bat
StartupProfileData-NonInteractive
__PSScriptPolicyTest_1wbkpmj1.bi0.ps1
memory/2388-42-0x0000000006120000-0x000000000616C000-memory.dmp
memory/2388-36-0x0000000005640000-0x0000000005997000-memory.dmp
memory/2528-44-0x0000000010000000-0x000000001002B000-memory.dmp
memory/2528-33-0x0000000003110000-0x0000000003146000-memory.dmp
memory/2900-18-0x0000000006200000-0x000000000621E000-memory.dmp
memory/2900-20-0x00000000071D0000-0x0000000007266000-memory.dmp
memory/2900-9-0x0000000005C90000-0x0000000005CF6000-memory.dmp
memory/2900-8-0x0000000005390000-0x00000000053B2000-memory.dmp
memory/2900-17-0x0000000005D70000-0x00000000060C7000-memory.dmp
memory/2900-10-0x0000000005D00000-0x0000000005D66000-memory.dmp
memory/2900-19-0x0000000006250000-0x000000000629C000-memory.dmp
memory/2900-6-0x0000000002DC0000-0x0000000002DD0000-memory.dmp
memory/2900-21-0x0000000006740000-0x000000000675A000-memory.dmp
memory/2900-22-0x00000000067B0000-0x00000000067D2000-memory.dmp
memory/2900-23-0x0000000007820000-0x0000000007DC6000-memory.dmp
memory/2900-4-0x0000000002DC0000-0x0000000002DD0000-memory.dmp
memory/2900-7-0x00000000054F0000-0x0000000005B1A000-memory.dmp
memory/2900-5-0x0000000002D40000-0x0000000002D76000-memory.dmp
memory/4884-2-0x0000000002FD0000-0x0000000003006000-memory.dmp
memory/4884-31-0x0000000003010000-0x0000000003046000-memory.dmp
memory/4884-25-0x0000000010000000-0x000000001002B000-memory.dmp
memory/4884-3-0x0000000003010000-0x0000000003046000-memory.dmp
memory/4884-1-0x0000000003010000-0x0000000003046000-memory.dmp