Analysis
- max time kernel
149s - max time network
131s - platform
windows10-2004_x64 - resource
win10v2004-20260130-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 $regPath -Name 'THREAD_ATTACH' -Value 'C:\Users\Admin\AppData\Local\Temp\2026-01-31_0a5db0a5765ff2511e2ee416eb14d1a9_elex_wannacry.exe' -Type String"2⤵
- Adds Run key to start application
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c \D31BE603.bat2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\tasklist.exetasklist3⤵
- Enumerates processes with tasklist
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\find.exefind /i "2026-01-31_0a5db0a5765ff2511e2ee416eb14d1a9_elex_wannacry.exe"3⤵
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4068 -s 12482⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4068 -ip 40681⤵
-
C:\Users\Admin\AppData\Local\Temp\2026-01-31_0a5db0a5765ff2511e2ee416eb14d1a9_elex_wannacry.exeC:\Users\Admin\AppData\Local\Temp\2026-01-31_0a5db0a5765ff2511e2ee416eb14d1a9_elex_wannacry.exe1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -Command "$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
D31BE603.bat
powershell.exe.log
StartupProfileData-NonInteractive
__PSScriptPolicyTest_ty2iom4b.mui.ps1
memory/704-19-0x0000000006220000-0x000000000623E000-memory.dmp
memory/704-22-0x0000000006720000-0x000000000673A000-memory.dmp
memory/704-7-0x0000000005430000-0x0000000005A58000-memory.dmp
memory/704-8-0x0000000005280000-0x00000000052A2000-memory.dmp
memory/704-9-0x0000000005B60000-0x0000000005BC6000-memory.dmp
memory/704-10-0x0000000005BD0000-0x0000000005C36000-memory.dmp
memory/704-5-0x0000000001160000-0x0000000001196000-memory.dmp
memory/704-18-0x0000000005D40000-0x0000000006094000-memory.dmp
memory/704-4-0x0000000004DF0000-0x0000000004E00000-memory.dmp
memory/704-20-0x00000000062D0000-0x000000000631C000-memory.dmp
memory/704-21-0x0000000007250000-0x00000000072E6000-memory.dmp
memory/704-6-0x0000000004DF0000-0x0000000004E00000-memory.dmp
memory/704-23-0x0000000006790000-0x00000000067B2000-memory.dmp
memory/704-24-0x00000000078A0000-0x0000000007E44000-memory.dmp
memory/2584-45-0x00000000058A0000-0x0000000005BF4000-memory.dmp
memory/2584-47-0x0000000005FC0000-0x000000000600C000-memory.dmp
memory/4068-27-0x0000000010000000-0x000000001002B000-memory.dmp
memory/4068-1-0x0000000002EC0000-0x0000000002EF6000-memory.dmp
memory/4068-33-0x0000000002EC0000-0x0000000002EF6000-memory.dmp
memory/4068-34-0x0000000002F00000-0x0000000002F36000-memory.dmp
memory/4068-3-0x0000000002F00000-0x0000000002F36000-memory.dmp
memory/4068-2-0x0000000002F00000-0x0000000002F36000-memory.dmp
memory/4464-49-0x0000000010000000-0x000000001002B000-memory.dmp