Behavioral task
behavioral1
Sample
Loader.exe
Resource
win7-20240221-en
General
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Target
Loader.exe
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Size
609KB
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MD5
9893f79d958d0fdf80c2f87fa526696c
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SHA1
b5349594b66680de00dd1c64e8ad23f5b60bedec
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SHA256
6c727f906a78ce58fd0970cce1216eaafa833f12ee8f6da2d42839d5ef00fb87
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SHA512
e0eb174f7b0f8e83c9010836bba865cb2320d94c87939f9ec18a1f029bc5eb1baa8691d25c84ed9cf330c4d6f61e627fb2b01393934f38853f44eacea9110e9e
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SSDEEP
12288:EoZcL+EP8LhahecjfUn1gevPeVTv6iPVle8w15dQPvY:HI8dahecjfUn1gevPeV7s15uY
Malware Config
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule sample family_umbral -
Umbral family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource Loader.exe
Files
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Loader.exe.exe windows:4 windows x86 arch:x86
Headers
File Characteristics
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: 5KB - Virtual size: 4KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
DATA Size: 512B - Virtual size: 124B
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: 1024B - Virtual size: 770B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.tls Size: - Virtual size: 4B
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: 512B - Virtual size: 456B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 601KB - Virtual size: 600KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ