Behavioral task
behavioral1
Sample
k.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
k.exe
Resource
win10v2004-20240802-en
General
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Target
k.exe
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Size
7.7MB
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MD5
a652ce5220cd49b6f763768dfa5f2a31
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SHA1
8b34c4ec496f910e2c70747ec73dad366a39006a
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SHA256
18e1937edc999cd87fa77cf26ac15b01421c4bf057ee5e0d8a659690f0db1964
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SHA512
62108c8f26fc7a8f3992bf3ee3957125fb806afe7dd54e5e3dce3bb58be808d1c7702c8aae0c62a90efc61777c9b0e24232166c96766765a8f70059d7b1e5b4f
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SSDEEP
98304:bwuFB5I0/A/636tEWlv5ZbNelTmLOqHBwiXM2Ol2GhZ:rW0/A/kIHOqKUM242WZ
Malware Config
Extracted
thunderkittyransomware
https://discord.com/api/webhooks/1289254488690921604/T_8SdWKaS6HoADGM7JVaF6jcngj3AwNmj_uW_5n-JDG_BMkPSaslAw0RSFMU0AJAbScS
Signatures
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Thunderkittyransomware family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource k.exe
Files
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k.exe.exe windows:6 windows x64 arch:x64
d42595b695fc008ef2c56aabd8efd68e
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
Imports
kernel32
WriteFile
WriteConsoleW
WerSetFlags
WerGetFlags
WaitForMultipleObjects
WaitForSingleObject
VirtualQuery
VirtualFree
VirtualAlloc
TlsAlloc
SwitchToThread
SuspendThread
SetWaitableTimer
SetProcessPriorityBoost
SetEvent
SetErrorMode
SetConsoleCtrlHandler
RtlVirtualUnwind
RtlLookupFunctionEntry
ResumeThread
RaiseFailFastException
PostQueuedCompletionStatus
LoadLibraryW
LoadLibraryExW
SetThreadContext
GetThreadContext
GetSystemInfo
GetSystemDirectoryA
GetStdHandle
GetQueuedCompletionStatusEx
GetProcessAffinityMask
GetProcAddress
GetErrorMode
GetEnvironmentStringsW
GetCurrentThreadId
GetConsoleMode
FreeEnvironmentStringsW
ExitProcess
DuplicateHandle
CreateWaitableTimerExW
CreateThread
CreateIoCompletionPort
CreateEventA
CloseHandle
AddVectoredExceptionHandler
AddVectoredContinueHandler
Sections
.text Size: 2.5MB - Virtual size: 2.5MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 2.5MB - Virtual size: 2.5MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 217KB - Virtual size: 528KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 58KB - Virtual size: 58KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.xdata Size: 512B - Virtual size: 180B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
/4 Size: 512B - Virtual size: 332B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/19 Size: 448KB - Virtual size: 447KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/32 Size: 94KB - Virtual size: 94KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/46 Size: 512B - Virtual size: 43B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/65 Size: 783KB - Virtual size: 782KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/78 Size: 577KB - Virtual size: 577KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/90 Size: 170KB - Virtual size: 169KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
.idata Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.reloc Size: 46KB - Virtual size: 46KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
.symtab Size: 375KB - Virtual size: 375KB
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ