Resubmissions
26-07-2024 22:22
240726-2ap5aaycqq 10Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win10-20240404-en
Behavioral task
behavioral2
Sample
Umbral.exe
Resource
win7-20240704-en
Behavioral task
behavioral3
Sample
Umbral.exe
Resource
win10v2004-20240709-en
General
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Target
Umbral.exe
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Size
229KB
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MD5
7b8f7224e44d39c521160c3b33e22e98
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SHA1
a8ab775e550aef4aa3b2f485116bcc245c7ccb48
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SHA256
256aa419764dc6cf6fef1a4bbe7a918c207c48515e9e13d18881a69b326c79f0
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SHA512
c11c922edb6d3aa634fd68dc59a86463fd29b27eead95864efc003fcbb226610854f3acceff7b580fb96443952aa68696f87ea4004e01af96eca570a75359859
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SSDEEP
6144:tloZM9rIkd8g+EtXHkv/iD4u5PpSQPL42BECDja/yb8e1mUZJi:voZmL+EP8u5PpSQPL42BECDjamp+
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1266518334506012802/Qw1X9GG-GFtHfQQhPAxRerwsZC0qm8UTflcN_59heNa2RZHB4gApWY0zSyOfYqSD-EbU
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 Umbral.exe
Files
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Umbral.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