Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20240221-en
General
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Target
Umbral.exe
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Size
229KB
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MD5
ac6dc91bec5d51b9b8f7b36642f875db
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SHA1
ebf088795549ec27047225f14b3263c7b022168e
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SHA256
cb32d0fc4534e19ae8009edacbe41b2aac5755b8c7bf233fd4c9b39a00f9b318
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SHA512
d44f953ea4aac986c5eea7242ad0d0b6143117781ab9f35537523ad0f4cf95b23c5aeb223ba74febba96afd9006b3f20edbc2bba2113661aa6d56368c93598da
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SSDEEP
6144:tloZM+rIkd8g+EtXHkv/iD4qacRCg/7IER0STTKreb8e1mHi:voZtL+EP8qacRCg/7IER0STTK2Z
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1234183133469872269/MIIOnNo8VcCEi5VwyIjRjJPVNZay1YPhZPz-L35nkeXNLLX5C-iO19uzba-gTFrjoLTw
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