Static task
static1
Behavioral task
behavioral1
Sample
jkas.exe
Resource
win10-20230915-en
Behavioral task
behavioral2
Sample
jkas.exe
Resource
win10v2004-20230915-en
General
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Target
jkas.exe
-
Size
731KB
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MD5
724841114acf0bbde3a70c4a7cb54bcc
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SHA1
1d298b3bf3b2d0c4ccd0615597ba9510e8f180c7
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SHA256
4c80c0a0d3c211c3aa52b734b4ccb40d50bd0d14b0364fd1160c0c4887df9cf1
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SHA512
cfd0494247c5dd11dbd9852c54131e90f5a4bf7ee1097c7a8be70bf958eb497c31d94c80ba8759e798c408704d9c89bc606b341af1dafec1d3941d29dba82d90
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SSDEEP
6144:P3BBCqxV6VsgHTQer7CZ1wwE5P4j8P6pfnFczW0AQxe2gHcb998g4iBCXtzrf78f:P3+A6hXqamQP6pfFCGVu8g4sCXtzr7O
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource jkas.exe
Files
-
jkas.exe.exe windows:4 windows x86
6f462fcc6b830b77fb3fef2add9dc570
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
msvcrt
malloc
_sleep
memset
strcmp
strcpy
getenv
sprintf
fopen
fwrite
fclose
__argc
__argv
_environ
_XcptFilter
__set_app_type
_controlfp
__getmainargs
exit
shell32
ShellExecuteA
kernel32
SetUnhandledExceptionFilter
Sections
.text Size: 2KB - Virtual size: 1KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 727KB - Virtual size: 727KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.bss Size: - Virtual size: 4B
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 1024B - Virtual size: 776B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ