Behavioral task
behavioral1
Sample
encryptfilesworking.exe
Resource
win7-20240215-en
General
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Target
6095bfb754fe6bbc4195a7d1274808d3_JaffaCakes118
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Size
39KB
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MD5
6095bfb754fe6bbc4195a7d1274808d3
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SHA1
7c052e9bc7ff5f25e7914d1ce6f2a15e40cdcfef
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SHA256
8f3f90f0e6ed7a2d9294ba0c2c0297a7c9827c1a9e04374b361ce1211a68ccb3
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SHA512
49b4088a0392e4dcb27787f57c82fe5d752e6d0a55a8f5bf17ae9aad7faa8a8b21f6484d65cbf5b6e8471879b1f24f2dd3abec02d92e4e2a4d83e8ad667dd3c9
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SSDEEP
768:CWKqWCOVvULCAt6Ej+NORgMv5zRt10VWCXo5OPgG7C7oNprJuY3trtzVHyuV:/Kxbu+NEiZMhzNRCaAhCqpJ3D1d
Malware Config
Signatures
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resource yara_rule static1/unpack001/encryptfilesworking.exe upx -
Unsigned PE 2 IoCs
Checks for missing Authenticode signature.
resource unpack001/encryptfilesworking.exe unpack002/out.upx
Files
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6095bfb754fe6bbc4195a7d1274808d3_JaffaCakes118.rar
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encryptfilesworking.exe.exe windows:1 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_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_BYTES_REVERSED_HI
Sections
UPX0 Size: - Virtual size: 104KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 38KB - Virtual size: 40KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 5KB - Virtual size: 8KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
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out.upx.exe windows:1 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_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_BYTES_REVERSED_HI
Sections
CODE Size: 103KB - Virtual size: 103KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
DATA Size: 3KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
BSS Size: - Virtual size: 1KB
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.idata Size: 4KB - Virtual size: 3KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.tls Size: - Virtual size: 8B
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rdata Size: 512B - Virtual size: 24B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 3KB - Virtual size: 3KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 5KB - Virtual size: 5KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ