Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20231215-en
General
-
Target
Umbral.exe
-
Size
230KB
-
MD5
133b51b989ffb3d42bfe0fa5f07ef542
-
SHA1
5a80a0ca68438ad36cb540b8685d09750f98c2d2
-
SHA256
da00749bd6a9cf20ee586951616f3bab8fee53535107240ff12123acf181e2e9
-
SHA512
39b95bbf585f2b52b27b041d00be5aa791d4586ce16aa9db277d79cdc213e891ca32fa58687f4da9b0c27f0114872e29178e63b9c949860f1bc1def45ec93cf6
-
SSDEEP
6144:9loZM+rIkd8g+EtXHkv/iD432++EKtFuMr20VJg17b8e1m4bi:foZtL+EP832++EKtFuMr20VJgNG
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1207029831825358848/n7VxnB0T_pffS388tYyMmQDLtE-oaYLo04bOu1LLouNRd6gpHBaT5KueUz2mINq9ng5g
Signatures
-
Detect Umbral payload 1 IoCs
resource yara_rule sample family_umbral -
Umbral family
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource Umbral.exe
Files
-
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: 228KB - Virtual size: 227KB
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