Static task
static1
Behavioral task
behavioral1
Sample
skulltagfs.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
skulltagfs.exe
Resource
win10v2004-20240709-en
General
-
Target
632052dd58e2f7eaa92626b3a174322c_JaffaCakes118
-
Size
13KB
-
MD5
632052dd58e2f7eaa92626b3a174322c
-
SHA1
275e44ac93a1614ef238c4424e1658b0e28fa932
-
SHA256
5c093287e10173bb702e18fd9da73198591a0a505c26796b972df462703f30d2
-
SHA512
dab7e01940d596927b26f05a723fd9cb8fbbde37958eb3459fd25613087118e77a255509ebb91b9e9c03fb7c35e602efc9add93c43c035be1bfa9ebf0dcc1249
-
SSDEEP
384:mTT4VUDCCZV7q0x/5Iyi87KUFXI1z2e481H:mnIIRHxxxTlFQz24Z
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack001/skulltagfs.exe
Files
-
632052dd58e2f7eaa92626b3a174322c_JaffaCakes118.zip
-
skulltagfs.c
-
skulltagfs.exe.exe windows:4 windows x86 arch:x86
72a5e66631b09fee87f8068484a2d82b
Headers
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DEBUG_STRIPPED
Imports
kernel32
ExitProcess
SetUnhandledExceptionFilter
msvcrt
_strdup
__getmainargs
__p__environ
__p__fmode
__set_app_type
_cexit
_errno
_iob
_onexit
_setmode
atexit
atoi
exit
fprintf
fwrite
malloc
memcpy
printf
putchar
puts
setbuf
signal
strerror
strlen
tolower
vprintf
ws2_32
WSAGetLastError
WSAStartup
closesocket
gethostbyname
htons
inet_addr
inet_ntoa
recvfrom
select
sendto
socket
Sections
.text Size: 6KB - Virtual size: 6KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.data Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rdata Size: 2KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.bss Size: - Virtual size: 2KB
IMAGE_SCN_CNT_UNINITIALIZED_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
-
sv_huffman.c
-
winerr.h