Static task
static1
Behavioral task
behavioral1
Sample
nexusext.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
nexusext.exe
Resource
win10v2004-20240802-en
General
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Target
a12458cd3a4e4bda7e1f96a5894e17a9_JaffaCakes118
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Size
6KB
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MD5
a12458cd3a4e4bda7e1f96a5894e17a9
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SHA1
a08fb0a7cba84298628ccb6c2244e46efaeee2ba
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SHA256
c991ab96a7ac8847d3ed08ff6d3d732a3ad8268fa041b30b79c379b1ee8ce93c
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SHA512
5a452a0455487e07c0c8871b6822799f4d8607c8a50cfd8e8271700b23f8abe33f57cd47da00c76b2720fb0e3824b4bf6729212a3f80ef7cb713d541165442aa
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SSDEEP
96:/hj2WU2SHZfu3Nk7lZUEgFgN9fAnBKPUvBnSvd6UyqxAdKpMWlI5wFlm3FZfOhNX:ZaBBu3Grr9QKENgyqOdN5P1BsNIDs7
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack001/nexusext.exe
Files
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a12458cd3a4e4bda7e1f96a5894e17a9_JaffaCakes118.zip
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nexusext.c
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nexusext.exe.exe windows:4 windows x86 arch:x86
b82d41584617b1a4e4f06e66b0c8aed9
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
GetModuleHandleA
GetProcAddress
SetUnhandledExceptionFilter
msvcrt
_chdir
_mkdir
__getmainargs
__p__environ
__p__fmode
__set_app_type
_cexit
_iob
_onexit
_setmode
atexit
exit
fclose
fopen
fread
fseek
ftell
fwrite
malloc
perror
printf
puts
setbuf
signal
sprintf
strchr
toupper
Sections
.text Size: 4KB - Virtual size: 4KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.data Size: 512B - Virtual size: 52B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rdata Size: 1024B - Virtual size: 720B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.bss Size: - Virtual size: 32KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.idata Size: 1024B - Virtual size: 944B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE