Behavioral task
behavioral1
Sample
Star.exe
Resource
win7-20231215-en
General
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Target
Star.exe
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Size
266KB
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MD5
4f2d0374f93b4079599cd3be7293c68c
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SHA1
28e6d128300a2a25203d39f492503b0391932f51
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SHA256
7e5a131d6b76fd964d4947b9c060fa0ff827162cb5047a9aa7edbe4dc5a91f66
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SHA512
7d3b853d1bbfdcbbfb7d5aff8e595590a0f1866459b80ca7822c5fbab1e5043c99e70b87f71cef4033dc4e1fcdc864b0fe0c3e3b84ad595a445092cff35fbfcb
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SSDEEP
3072:k2Jog9kK82e+i392qYpQZCi+oynzDQjj5JWCnWdZN7/VmtgzExXB+btwBtIxY8eM:jJo29yXZYmCnzDQjjLWNRmTd98e1Zl
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1209321304994619533/mMcDpunpyAbML-H8z32uQlMHknkdb5LP13ysEZnYmct14-eXHUHss93NnbJFOWSbWxWO
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 Star.exe
Files
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Star.exe.exe windows:4 windows x86 arch:x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
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_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 263KB - Virtual size: 263KB
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