Behavioral task
behavioral1
Sample
FileJoiner.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
FileJoiner.exe
Resource
win10v2004-20231215-en
General
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Target
4de54af9c76b7b8c8a5d47f5ad4cde72
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Size
781KB
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MD5
4de54af9c76b7b8c8a5d47f5ad4cde72
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SHA1
bfa37e2c7bbdaa215bff01a1173d2e623bdfd73b
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SHA256
44b40d4e14f3ecf5cb11b231f1576bb563dcbb33e135375eb33d7993ba6afaf8
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SHA512
d86fff363c2e5ad8b441c10daa5f71b6d33c8e6e8c07bb6c18a659950fb614ce1c9b70adacc59c936144dbf7c35b29c355e4820316aff49f5f6e880b3144b5c4
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SSDEEP
24576:M+5J+NLhrpORloJbXZ8qI9DcjQI8DiNrpZ9IM:3JCLhE0j3I9IjiDqrp
Malware Config
Signatures
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resource yara_rule static1/unpack001/FileJoiner.exe upx -
Unsigned PE 2 IoCs
Checks for missing Authenticode signature.
resource unpack001/FileJoiner.exe unpack002/out.upx
Files
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4de54af9c76b7b8c8a5d47f5ad4cde72.zip
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FileJoiner.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_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_BYTES_REVERSED_HI
Sections
UPX0 Size: - Virtual size: 1.2MB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 789KB - Virtual size: 792KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 15KB - Virtual size: 16KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
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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_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_BYTES_REVERSED_HI
Sections
CODE Size: 1.1MB - Virtual size: 1.1MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
DATA Size: 13KB - Virtual size: 12KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
BSS Size: - Virtual size: 27KB
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.idata Size: 10KB - Virtual size: 10KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.tls Size: - Virtual size: 52B
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: 63KB - Virtual size: 62KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 762KB - Virtual size: 762KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
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license.txt