Behavioral task
behavioral1
Sample
Umbral1.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
Umbral1.exe
Resource
win10v2004-20240802-en
General
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Target
Umbral1.exe
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Size
227KB
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MD5
f6aeb1204375bc9a4ea0cfa7a1a76ba5
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SHA1
e659b3e54d32f44bf915d64c51bb512e58a7eeea
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SHA256
0ddc72fe91b271d21fbaafd017168c9b5370d362d7bd3e60928490ab4d1fac96
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SHA512
75ffba3ec1f5e05684ab0b99af42a518735324355745f0f9e3ba057627b746a948b86331e281db1bc2064f504af334118cb29807cb97b6579723e144d7acbd41
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SSDEEP
6144:+loZMLrIkd8g+EtXHkv/iD44VShOsTPkZFQu//OzCb8e1mJdi:ooZ0L+EP84VShOsTPkZFQu//O6B
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1268994498789118136/wdCgBN75mgZansODldWwpt19cwl4Du5oYshkYt-juoCAF_n-WC5lHOIdR6Ww9M9mxDJl
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 Umbral1.exe
Files
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Umbral1.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: 224KB - Virtual size: 224KB
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