expiro | a20eac8f44493aacac5fe4d9d06ae3300297cd0021d1bc704cf5416ce870c616

Analysis

max time kernel
148s
max time network
124s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
03/08/2026, 18:13

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General

Target
2026-08-03_50e8dc6335566a6200721e8bd368fb32_elex_wannacry.exe
Size 834KB
Sample260803-wt131ade42
SHA256 a20eac8f44493aacac5fe4d9d06ae3300297cd0021d1bc704cf5416ce870c616
MD5 50e8dc6335566a6200721e8bd368fb32
SHA1 229db71b1d9028e3bbf8d195d16b9bd2be441d50
SHA512 4056c67a099bca9d94d7902c65d354e003b288c5f8783f2b8eb65025ef29ec1ac664b6b7d009b9e31c04b322116c36b7ff32927c721e189b7942337d2f5021a5
SSDEEP 24576:FzB6rlge/TBP9wUEYRGtkUL3U+dwfFk96:FVEGeLBP9wVtkUbOfFk
TLSH
T162059EC27BB5C476C5B64531C78DC18360ACD677E86157A2B2C82A7F4A708C2C753BEA
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor discovery expiro

Malware Config

Signatures

Family: Expiro, m0yv
Expiro aka m0yv is a multi-functional backdoor written in C++.
backdoor expiro

Expiro payload 1 IoCs

backdoor

resource	yara_rule
behavioral2/memory/3412-1-0x0000000000400000-0x00000000005EF000-memory.dmp	family_expiro1

Detects executables packed with VMProtect. 2 IoCs

resource	yara_rule
behavioral2/memory/3412-0-0x0000000000400000-0x00000000005EF000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/3412-1-0x0000000000400000-0x00000000005EF000-memory.dmp	INDICATOR_EXE_Packed_VMProtect

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-03_50e8dc6335566a6200721e8bd368fb32_elex_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2026-08-03_50e8dc6335566a6200721e8bd368fb32_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-03_50e8dc6335566a6200721e8bd368fb32_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:3412

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3412-0-0x0000000000400000-0x00000000005EF000-memory.dmp

Download

memory/3412-1-0x0000000000400000-0x00000000005EF000-memory.dmp