Behavioral task
behavioral1
Sample
entropy/entropy.dll
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
entropy/entropy.dll
Resource
win10v2004-20241007-en
Behavioral task
behavioral3
Sample
entropy/entropy.exe
Resource
win7-20240903-en
Behavioral task
behavioral4
Sample
entropy/entropy.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral5
Sample
entropy/entropyloader.dll
Resource
win7-20240903-en
Behavioral task
behavioral6
Sample
entropy/entropyloader.dll
Resource
win10v2004-20241007-en
General
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Target
entropy.rar
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Size
23.8MB
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MD5
5eef2f25506a7c9e23cb9f238bd45c5d
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SHA1
60d9fca48c4129a4b52b14db0d411550387af172
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SHA256
5ba53bea3dbfb5b85cf489b590a7bedc55b1b1a2c4cc2ce2cfd1ea95f6146df1
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SHA512
8b92b7cf78b2e478abcb16965c23ae4744bea2587dd69aeb41f2b5887d979063255b4e5dd58e3dd5a8f31967c79558bc60a2c1cb9221d29c315fd9207a3ce40a
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SSDEEP
393216:Bw8y73gY6J1Jihzgh8b2tD1mYpzPJ/MgFE92bN4fQAQO1MZwFuKJm:51vihy8b2tD1mYpzPJk92J4MO1Yw4cm
Malware Config
Extracted
skuld
https://ptb.discord.com/api/webhooks/1319318477408047165/OlFWH_PIBwNGfz_7UuTLnmHB5OiggmlmBSFzIeEep75dMy86-iWvtqa8W1EF-DwvuHT-
Signatures
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Skuld family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack001/entropy/entropy.exe
Files
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entropy.rar.rar
Password: entropy
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entropy/entropy.dll
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entropy/entropy.exe.exe windows:6 windows x64 arch:x64
Password: entropy
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: 4.8MB - Virtual size: 4.8MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 4.4MB - Virtual size: 4.4MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 468KB - Virtual size: 798KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 111KB - Virtual size: 111KB
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: 924KB - Virtual size: 924KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/32 Size: 172KB - Virtual size: 172KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/46 Size: 512B - Virtual size: 41B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/65 Size: 1.7MB - Virtual size: 1.7MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/78 Size: 1.1MB - Virtual size: 1.1MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/90 Size: 330KB - Virtual size: 330KB
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: 68KB - Virtual size: 68KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
.symtab Size: 723KB - Virtual size: 723KB
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
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entropy/entropyloader.dll