General
-
Target
Umbral.exe
-
Size
496KB
-
MD5
2989b8a064354c5fa729d713b84df30e
-
SHA1
a8f8065b500258e7b768c59f9c6f57932d4bcfa1
-
SHA256
bbdd54660f7cfee0d7ec0d5afa51900142c029ae48e71f8d4f834cac00b1761b
-
SHA512
0d5b22d39dff8030755bb120c598aec238549100fb53c40468be7f6adb036867bf464fc9c71b204824f7042faa18cbb90ab199ce450844371b42b79c22fb3e94
-
SSDEEP
12288:VoZtL+EP8jNMGxfEY3tmfh8ItWCw8ZOG:jI85MGxfEY3tmfh8ItDwaO
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1270049148514730095/IR8wg5u43Pwp7dfJhyHN21ljXCCkzpAQry61VjfvTdxGZeHSvggWRaWZnQiWN4vEx0gz
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: 229KB - Virtual size: 229KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 266KB - Virtual size: 265KB
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