Behavioral task
behavioral1
Sample
MBR Locker Builder.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
MBR Locker Builder.exe
Resource
win10v2004-20240226-en
General
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Target
MBR Locker Builder.exe
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Size
192KB
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MD5
c8f5f007e75f79d7289568406b450a21
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SHA1
424232cd270b7e7d255d440d25188097b9f0e465
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SHA256
be0830713d84ebe82e0fd2a9380d4e4fba59b547691a14069ea024c8562396d4
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SHA512
4de27d38bfcdfda879d81703d44a02d3699ce28d924ea509cabb106df9cdd03365f7386afcfdce5a8915555e733579221c152091802061c44c1a920f40873b73
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SSDEEP
3072:9PdEbA9i6ZUVXMdvx4JVAKvj62QvOOi2RW8F1CaDNmS4dZbAX/qcNOG+xD9VtxZP:VdE89ZU+dvIfXI3XCaDWZbA0Frt
Malware Config
Signatures
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resource yara_rule sample upx -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource MBR Locker Builder.exe
Files
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MBR Locker Builder.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: 316KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 173KB - Virtual size: 176KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 18KB - Virtual size: 20KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE