Behavioral task
behavioral1
Sample
Fkn CSS Hook/Fkn CSS Hook.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Fkn CSS Hook/Fkn CSS Hook.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral3
Sample
Fkn CSS Hook/database.exe
Resource
win7-20240708-en
General
-
Target
5365145d6d607fb786f9361f3a49f786_JaffaCakes118
-
Size
77KB
-
MD5
5365145d6d607fb786f9361f3a49f786
-
SHA1
e82a02f80795dd68f41120237362379589b05aa4
-
SHA256
ed6c1999cc33cceafd7ec44ef8603d4176d98ad21bb5606a943890e9a9b331c4
-
SHA512
9caea7d81e127d0e5087382cb24d4b03cb934b4311689d9fb2776fb4877219710672c0615f3ead75eab3f3ab00b1578dd61066d070437afebbaa788d408d0143
-
SSDEEP
1536:5UZ58bcmr2XtWQ+uvqqxXxPj28BcT0DMkf4EyHPT51DMD4vG5xkiT5:S8omrQWQ+khLKT0DMwv8PT5VG5xPN
Malware Config
Signatures
-
resource yara_rule static1/unpack001/Fkn CSS Hook/Fkn CSS Hook.exe upx static1/unpack001/Fkn CSS Hook/database.dll upx -
Unsigned PE 4 IoCs
Checks for missing Authenticode signature.
resource unpack001/Fkn CSS Hook/Fkn CSS Hook.exe unpack002/out.upx unpack001/Fkn CSS Hook/database.dll unpack003/out.upx
Files
-
5365145d6d607fb786f9361f3a49f786_JaffaCakes118.rar
-
Fkn CSS Hook/Fkn CSS Hook.exe.exe windows:4 windows x86 arch:x86
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
Sections
UPX0 Size: - Virtual size: 20KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 56KB - Virtual size: 60KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 2KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
-
out.upx.exe windows:4 windows x86 arch:x86
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
Sections
.text Size: 64KB - Virtual size: 60KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.data Size: 4KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 4KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
-
Fkn CSS Hook/database.dll.exe windows:4 windows x86 arch:x86
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
Sections
UPX0 Size: - Virtual size: 1.3MB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 19KB - Virtual size: 20KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 9KB - Virtual size: 12KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
-
out.upx.exe windows:4 windows x86 arch:x86
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
Sections
.text Size: 1.3MB - Virtual size: 1.3MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.data Size: 4KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 12KB - Virtual size: 8KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ