Behavioral task
behavioral1
Sample
Krnl.exe
Resource
win7-20231215-en
General
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Target
Krnl.exe
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Size
74KB
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MD5
06acd0b95127984e7b6fa872c5f7118b
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SHA1
386036a663cea9ce33416c502fee931a68231e2a
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SHA256
9dc9fd97ba03646d1b0e53b59d17bfc0af0434c84e71834cc6eb5420e2c6bf18
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SHA512
b35ec53331ca6b1d16ed8cf0f6ebdaab05a70ae93592017c4a345df241c4b77e1a4719c5d8d54f041e49340b04e671c0a18224dbcf1c6f4b3f99e49795cbb1ac
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SSDEEP
1536:3dU5XEFGkT7yFizNwDBSGRYfbs2Ej+bMbtOP1yyW04Yla:3GJLkT7JhCIVbs2IbtO9yrUa
Malware Config
Extracted
xworm
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install_file
USB.exe
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pastebin_url
https://pastebin.com/raw/uhC9U9qX
Signatures
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Detect Xworm Payload 1 IoCs
resource yara_rule sample family_xworm -
Xworm family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource Krnl.exe
Files
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Krnl.exe.exe windows:4 windows x86 arch:x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 71KB - Virtual size: 71KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 12B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ