Behavioral task
behavioral1
Sample
Umbra1.exe
Resource
win7-20241010-en
General
-
Target
Umbra1.exe
-
Size
227KB
-
MD5
e05f912c51e4a9928935a2738eab71fb
-
SHA1
d200445ad98692386f1980466139533e8e63903c
-
SHA256
f1957d71c46891f4531175340ff6d01cfab6ec22f17bec699bfa0c803c0964dc
-
SHA512
35bb91dd64598ddf2c839097b398c1aa685b82abf60781fc1684d26490c096c3adc3f6cfa4f56be4d2a5aa6ac987acd369626072735d0e16185f55dfc53163e7
-
SSDEEP
6144:eloZM+rIkd8g+EtXHkv/iD4A0CoNbYMTUqL9Y0hIVb8e1m7i:IoZtL+EP8A0CoNbYMTUqL9Y0hYx
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1296704030944264233/QqRU9vIQbgVnRcwE2TEKtaecT1qijO6ljF5J3Q4ia9hh_waZjN23zmCM8yyovN90SJgI
Signatures
-
Detect Umbral payload 1 IoCs
resource yara_rule sample family_umbral -
Umbral family
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource Umbra1.exe
Files
-
Umbra1.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: 224KB - Virtual size: 224KB
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