Behavioral task
behavioral1
Sample
b05473c841391ccb2032655a864088e714df2c2e01c837939ad16a6d23c3c387.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
b05473c841391ccb2032655a864088e714df2c2e01c837939ad16a6d23c3c387.exe
Resource
win10v2004-20240221-en
General
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Target
b05473c841391ccb2032655a864088e714df2c2e01c837939ad16a6d23c3c387
-
Size
1.1MB
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MD5
174024b899474ad2c46d64a50df4f6be
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SHA1
deffa7948a97a1f3e4ae6e8024e445968668d17f
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SHA256
b05473c841391ccb2032655a864088e714df2c2e01c837939ad16a6d23c3c387
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SHA512
ff46ec74107cbda7b5178f7542ac2fd315e06b67df679d0698e98f3b0c7ba220a00b77a5edcb0ba330e7c3f43a854a00cdbf9cdce778cecd8a7862e98fababcc
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SSDEEP
12288:I27q8BViDLj2nIccHu+Tc/gvpQW7GzBI2Xf/7Vh:IHl/2ngBc8p3uF3Jh
Malware Config
Extracted
cobaltstrike
http://update.office-oa.org:8443/api/2
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user_agent
Host: update.office-oa.org User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0; MALC)
Signatures
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Cobaltstrike family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource b05473c841391ccb2032655a864088e714df2c2e01c837939ad16a6d23c3c387
Files
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b05473c841391ccb2032655a864088e714df2c2e01c837939ad16a6d23c3c387.exe windows:6 windows x64 arch:x64
93a138801d9601e4c36e6274c8b9d111
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
IMAGE_FILE_DEBUG_STRIPPED
Imports
kernel32
WriteFile
WriteConsoleW
WaitForMultipleObjects
WaitForSingleObject
VirtualQuery
VirtualFree
VirtualAlloc
SwitchToThread
SuspendThread
SetWaitableTimer
SetUnhandledExceptionFilter
SetProcessPriorityBoost
SetEvent
SetErrorMode
SetConsoleCtrlHandler
ResumeThread
QueryFullProcessImageNameA
ProcessIdToSessionId
PostQueuedCompletionStatus
OpenProcess
LoadLibraryA
LoadLibraryW
SetThreadContext
GetThreadContext
GetSystemInfo
GetSystemDirectoryA
GetStdHandle
GetQueuedCompletionStatusEx
GetProcessAffinityMask
GetProcAddress
GetEnvironmentStringsW
GetConsoleMode
FreeEnvironmentStringsW
ExitProcess
DuplicateHandle
CreateThread
CreateIoCompletionPort
CreateEventA
CloseHandle
AddVectoredExceptionHandler
Sections
.text Size: 504KB - Virtual size: 503KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 530KB - Virtual size: 530KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 18KB - Virtual size: 231KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.idata Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.reloc Size: 22KB - Virtual size: 21KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
.symtab Size: 512B - Virtual size: 4B
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ