umbral | 3O[.]exe | Triage

Sharing

General

Target

3O.exe
Size

972KB
MD5

e9e10384209bc3b39b6f5cd6f33314e7
SHA1

40f0bed19c2f77417ab130e7be434c6e0e33bc0a
SHA256

b63721f19f217379cbafdaa58a1a2d16975b82547a5cb8701604f53e5ace059b
SHA512

b391ef944dcc1d4f1158579ea4f7c8f248c5b3ee58f4483a2ba60956953763c6a0ce641707a583c6329e1c58265494065552901a0152cea5d6d87cd5d40501be
SSDEEP

24576:HnsJ39LyjbJkQFMhmC+6GD94I8AvqGELnszd42X3W6FY:HnsHyjtk2MYC5GDlFY

Score

10^/10

umbral

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
sample	family_umbral

Umbral family
umbral

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
3O.exe

Files

3O.exe
.exe windows:4 windows x86 arch:x86

Headers

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_BYTES_REVERSED_HI

Sections

CODE
Size: 615KB - Virtual size: 614KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

DATA
Size: 12KB - Virtual size: 11KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

BSS
Size: - Virtual size: 4KB

IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 11KB - Virtual size: 10KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.tls
Size: - Virtual size: 16B

IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 512B - Virtual size: 57B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 42KB - Virtual size: 42KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 290KB - Virtual size: 289KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ