umbral | Dead+Stealer[.]rar

General

Target
Dead+Stealer.rar
Size 200KB
Sample240810-facnaszfpc
SHA256 1b9385d02d7257137ac792f32b3109b02a01c720de368c1f334ec8f54638f795
MD5 0d95c0b8381a7eea1b391c0c4c1b705a
SHA1 b9777d1eb06902c161f0a88925de3c49d61dadf1
SHA512 1d86bfca0e998ce7e6a67eb37189d18f3c66e311b7a2ec393e7f7549f7f5467fed4c10e4965ae77d0799aad2e9d72bc6c62a5e9cc3547eaae1aa5aaaaccc9852
SSDEEP 6144:oXGhaBEyvGC8UasGt9dWiwZIUnD16gXIDS18Q56BB:kGhByeuaRWxIUp6PDOjMBB
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

umbral

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1267112581206904925/Gkx9-NA-5FKJL-3Ehaqtj5lpmNzG-yFwxfY66lVxsyoKGIcae-bbaUO7d-hvSLDQU1-n

Signatures

Detect Umbral payload 2 IoCs

resource	yara_rule
static1/unpack001/Dead Stealer/dead-builder.exe	family_umbral
static1/unpack001/Dead Stealer/dead.payload	family_umbral

Umbral family
umbral

Unsigned PE 2 IoCs

Checks for missing Authenticode signature.

resource
unpack001/Dead Stealer/dead-builder.exe
unpack001/Dead Stealer/dead.payload

File Explorer

Dead+Stealer.rar

.rar 200KB
Dead Stealer/dead-builder.exe

.exe 254KB
Dead Stealer/dead.payload

.exe 254KB

Dead+Stealer.rar

SHA256 1b9385d02d7257137ac792f32b3109b02a01c720de368c1f334ec8f54638f795
MD5 0d95c0b8381a7eea1b391c0c4c1b705a
SHA1 b9777d1eb06902c161f0a88925de3c49d61dadf1
SHA512 1d86bfca0e998ce7e6a67eb37189d18f3c66e311b7a2ec393e7f7549f7f5467fed4c10e4965ae77d0799aad2e9d72bc6c62a5e9cc3547eaae1aa5aaaaccc9852
SSDEEP 6144:oXGhaBEyvGC8UasGt9dWiwZIUnD16gXIDS18Q56BB:kGhByeuaRWxIUp6PDOjMBB
MD5 SHA1 SHA512 SSDEEP

Dead Stealer/dead-builder.exe

IMPHASH f34d5f2d4577ed6d9ceec516c1f5a744
SHA256 4fec5552f2a39ddd4bdcfd316ac96ecf9f6a413fb3a674d058d1695b88c8db5f
MD5 a57179fa58b196077b35da7eb4032a18
SHA1 92a6d5ac92fe534fa1c5cdb45bc95135ef3effad
SHA512 d66f89a6f1b76e64de7f163a9cf4c31b1fcd2b1129800c1659f50d2a23e67e93820f64624ebacd25eeee193fee6e96a849f42687f5b4be9bdf8cab53f7ef31d7
SSDEEP 6144:K4oZoAeVHPtHgTIAaZgCwDx7axHU0unC28ejI8x7:xoZyHPvWCwjXCsIM
MD5 SHA1 SHA512 SSDEEP

windows:4 windows x86 arch:x86

Detect Umbral payload
Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

0

Major OS version

4

Entry point

265278

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

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

PDB paths

Dead Stealer/dead.payload

IMPHASH f34d5f2d4577ed6d9ceec516c1f5a744
SHA256 7e45b79940116f8a1de3a75f82e5209d0279d99479a24778e1590dd739b6ddf8
MD5 41a555bbc081356100cafdd006d3c096
SHA1 bf4f81ed8b698b9865098fccabff0bbbe3ca3255
SHA512 1bc00d609264c523ab114e845a26edb9a611b927a583730880916f04efeee9c37c4529559a47854e422ab8530ab8edbb87754a755f50939c29e5a14e4b74efbc
SSDEEP 6144:+4oZo8KbOUtoAXAEeDh0x7axHU3FmRaW8ejI82V:9oZAOUo90ufIl
MD5 SHA1 SHA512 SSDEEP

windows:4 windows x86 arch:x86

Detect Umbral payload
Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

0

Major OS version

4

Entry point

264718

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

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

PDB paths

C:\Users\!DEVIL\Desktop\‎\Umbral-Stealer-main\Umbral.payload\obj\Release\dead.payload.pdb

Dead+Stealer.rar

Dead Stealer/dead-builder.exe

mscoree

dotnet

Dead Stealer/dead.payload

mscoree

dotnet

Sharing

General

Malware Config

Extracted

Signatures

File Explorer

Dead+Stealer.rar

Dead Stealer/dead-builder.exe

mscoree

dotnet

Dead Stealer/dead.payload

mscoree

dotnet