umbral | Sash_crack[.]exe | Triage

Sharing

General

Target

Sash_crack.exe
Size

229KB
MD5

b4194015c260caf700eb8fa8b68bd715
SHA1

fbba3ddf29726fdc112771d7d31e39ada64dbd47
SHA256

3e6c300b61fc97ddc3577f37aba155b7ca1023dc5206a2f763216d4bcc613973
SHA512

7a561d4282b9460cbc5947512c5d1ae0fdc886fa8f6752d3daa6a9f3d829e2984373cdfb66853bd424b161bde05b6f6ba704c52a422f9afb21b9b32c9d5497e5
SSDEEP

6144:tloZM+rIkd8g+EtXHkv/iD4/c2DmHdmOhPU9va6v/Rb8e1m4/i:voZtL+EP8/c2DmHdmOhPU9va6vBrq

Score

10^/10

umbral

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1298498805481865269/RHGyyiSQrja4thxirZwgWS1Vy2V3ZrROnTt-86AzV7A9KgBKapYYEOZB6lIVuyvP7eTp

Signatures

Detect Umbral payload 1 IoCs

Processes:

resource yara_rule

sample family_umbral
Umbral family
umbral
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.

Processes:

resource

Sash_crack.exe

Files

Sash_crack.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: 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