Static task
static1
Behavioral task
behavioral1
Sample
shellcode_loader.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
shellcode_loader.exe
Resource
win10v2004-20240226-en
General
-
Target
shellcode_loader.exe
-
Size
526KB
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MD5
4028561ff4cfafc59be97cdb36a719f8
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SHA1
b27f18ea72b2240b00a883d0f34d14f0550b981e
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SHA256
b10a9b97ea2bef896ef1f0ebee0a5fe5c40c364600fbbece3601a4bc11246679
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SHA512
3da8d6059216d491ab7c15c227dbd9d3b89023193cb9361b9ba6cfbfc900dddea272ce6f34f4b653316cb57f2201d9489732942777389ea0d1e6c8a03b32313b
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SSDEEP
6144:tNCKlR2BmlenYPG5f7lbY26HoeCoipWhqXSSonehzniQ2N/YaU0mfwO5:tNCKlR2kenYPc85qoiUJSonehniJ+Hf3
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource shellcode_loader.exe
Files
-
shellcode_loader.exe.exe windows:4 windows x86 arch:x86
9b8d37984d829a31e5f3dce1c44f56ce
Headers
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
Imports
kernel32
DeleteCriticalSection
EnterCriticalSection
FreeLibrary
GetLastError
GetModuleHandleA
GetModuleHandleW
GetProcAddress
GetStartupInfoA
InitializeCriticalSection
IsDBCSLeadByteEx
LeaveCriticalSection
LoadLibraryA
MultiByteToWideChar
SetHandleInformation
SetUnhandledExceptionFilter
Sleep
TlsGetValue
VirtualAlloc
VirtualFree
VirtualProtect
VirtualQuery
WideCharToMultiByte
msvcrt
__getmainargs
__initenv
__lconv_init
__mb_cur_max
__p__acmdln
__p__commode
__p__fmode
__set_app_type
__setusermatherr
_amsg_exit
_cexit
_errno
_fileno
_get_osfhandle
_initterm
_iob
_isatty
_lock
_onexit
_setjmp3
_setmode
_unlock
_wfopen
abort
atoi
calloc
clearerr
exit
fclose
ferror
fflush
fgetc
fgets
fprintf
fputc
fread
free
fseek
ftell
fwrite
getenv
localeconv
malloc
memchr
memcmp
memcpy
memset
setlocale
setvbuf
signal
strchr
strerror
strlen
strncmp
ungetc
vfprintf
wcschr
wcslen
longjmp
Sections
.text Size: 192KB - Virtual size: 192KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.data Size: 512B - Virtual size: 208B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rdata Size: 28KB - Virtual size: 28KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
/4 Size: 28KB - Virtual size: 28KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.bss Size: - Virtual size: 46KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.idata Size: 2KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.CRT Size: 512B - Virtual size: 52B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.tls Size: 512B - Virtual size: 8B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 1024B - Virtual size: 548B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
/14 Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/29 Size: 67KB - Virtual size: 67KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/41 Size: 12KB - Virtual size: 12KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/55 Size: 30KB - Virtual size: 29KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/67 Size: 5KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/80 Size: 2KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/91 Size: 38KB - Virtual size: 38KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/102 Size: 3KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ