Behavioral task
behavioral1
Sample
atomic.exe
Resource
win7-20240903-en
General
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Target
atomic.exe
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Size
229KB
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MD5
05f1e261fdb236fd899a48d71a5f33f1
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SHA1
6a0399a6a8417616f5fd72e075712a54fbde4a6d
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SHA256
15e734a6600467bdf53fb3e997151562f25797baa8e5688036240438a96ca1e1
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SHA512
f637b0c54c8223a41961274cabe34e1d9b23e351e6f78658617785d53785e31ec33bdef700d7257ca9667420fafe6ec556d210fd5cf1f11d03b1b7443b923212
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SSDEEP
6144:tloZMLrIkd8g+EtXHkv/iD4H4jwT5KyNo4ZL22jx9b8e1mrgi:voZ0L+EP8H4jwT5KyNo4ZL22jz2
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1295100259101310996/NS6fhNZm5DSV0fiK2qgIelgdlX55DNAj9Ri9S4FVxmg782vpz-tRPZkMk5wT2PXlm2y4
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 atomic.exe
Files
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atomic.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: 227KB - Virtual size: 226KB
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