Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20240705-en
General
-
Target
Umbral.exe
-
Size
234KB
-
MD5
18a5e3fd22133b48de0ac3ae4e41c997
-
SHA1
6664c80cf7567077385cc5f82aba04d525a7a8a9
-
SHA256
9fa6035e3150c3e57724bd3f4f67647ed925c9c9447f00b3df7715d03b6ebf53
-
SHA512
c359ef3b9b5736b63e8906f6d35e6fb9b6f286f4fd382f5f445f2a5c9e38673a04f90215349c417c19e67cd9e123925521084167ac2dce0af842d18eb3c070b9
-
SSDEEP
6144:zloZM+rIkd8g+EtXHkv/iD4VsEnYe5xysXKYZd85Wn+l78e1mUDiM:xoZtL+EP8mEnYe5xysXKYZd85zJiM
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1277392669051588690/FA7JPNKgRkIWF6TZtZf-R2-COXm_0RmJgRD2Xg8FbKAIoqjl7PPy7FAMl1QANkBaTKhi
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: 227KB - Virtual size: 226KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 6KB - Virtual size: 5KB
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