Behavioral task
behavioral1
Sample
21fd0f495cd03d690946a166e5502a2f.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
21fd0f495cd03d690946a166e5502a2f.exe
Resource
win10v2004-20231215-en
General
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Target
21fd0f495cd03d690946a166e5502a2f
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Size
129KB
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MD5
21fd0f495cd03d690946a166e5502a2f
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SHA1
0890fe054b610909996e7490805c96d3a5c65af0
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SHA256
78b2913f9e80784e463ec74873a11c7c8a5a46e90781f137b4ab5054f3aa2951
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SHA512
8afdaedda5397cc3fd18b8a24a2c51ebfa74dc1965d2f646ecc7a18ea5a001f62ca5e400a3c694728d0bf1e4789fd230141b1b7ce65a8674778a453ecfe08cba
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SSDEEP
1536:HMyLSmnBoQyRUhGfywRqmUoiascLEAJlqEJj9Ulw9CIDvk8+ospm5Pd8AldU1Ao+:HZw2QbjlTfzJDVdv/hJm2dUK7zTn
Malware Config
Signatures
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Patched UPX-packed file 1 IoCs
Sample is packed with UPX but required header fields are zeroed out to prevent unpacking with the default UPX tool.
resource yara_rule static1/unpack001/out.upx patched_upx -
resource yara_rule sample upx -
Unsigned PE 2 IoCs
Checks for missing Authenticode signature.
resource 21fd0f495cd03d690946a166e5502a2f unpack001/out.upx
Files
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21fd0f495cd03d690946a166e5502a2f.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: 200KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 127KB - Virtual size: 128KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 1024B - Virtual size: 4KB
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_32BIT_MACHINE
Sections
.text Size: 200KB - Virtual size: 197KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 104KB - Virtual size: 100KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 8KB - Virtual size: 9KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 4KB - Virtual size: 840B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ