Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20240221-en
General
-
Target
Umbral.exe
-
Size
229KB
-
MD5
aaf99a08d4968f6c8b4dffea65e508b5
-
SHA1
99d6d8d218dc7a07cb8dbf009ed474782babd4d9
-
SHA256
30ac9d27fe86c00f827876cb245deedf7f8f4cbb16f4359fda4beb0cf8183d73
-
SHA512
9bf219952fca4d62f85bf565804e03901ec9d2b77d59e8600f2276a867bd8e6b516f4ee68527b481f11ff4df6ed4da77a438de1c1f386f8eae54e7797a63e696
-
SSDEEP
6144:9loZM9rIkd8g+EtXHkv/iD4DcSP4+ZRSe3q459cgYb8e1mDi:foZOL+EP8DcSP4+ZRSe3q459clF
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1249007822545621105/lIYWehahvoMIbDERS3j5Uq_Y96bmWma5CxEszXK2nvldB8Ztc-7U-KY4N_IUtSC3fMqB
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
Password: 123
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