expiro | 8426cdd1a58f32850dcb4746e3755ba7c6620bd4c900ec1aaa3904576368a4bb

Analysis

max time kernel
149s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
13/09/2026, 22:27

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General

Target
2026-09-12_aa8a832e875cccf5fc0069c9c9457ab9_elex_wannacry.exe
Size 900KB
Sample260913-2dd67axwes
SHA256 8426cdd1a58f32850dcb4746e3755ba7c6620bd4c900ec1aaa3904576368a4bb
MD5 aa8a832e875cccf5fc0069c9c9457ab9
SHA1 89329795c314dd71426ce742d796d2bb9b55b8f8
SHA512 f56f8679be4c179989dba339800022e634efcf9c61f89d6448d5ca486de036318854ebc1c42a9794556961297e24d70d71df8027d71414e446376ec13231b67e
SSDEEP 12288:oUCztyBi0tyLp8rlA3s5/f1uttJW7NTmK2eKaM5TQqv3y/MZ5M056uTkodeQKxw6:YzB6rlge/AtJW7Nh2l5E570s4dMORU7
TLSH
T11915AF0197B9EC7DC9A285308A5E1B61F4D9A9B29E7048DF13F8091DC7B8C42D637B8D
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
behavioral1/memory/2556-1-0x0000000000400000-0x00000000006A9000-memory.dmp	family_expiro1

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	2026-09-12_aa8a832e875cccf5fc0069c9c9457ab9_elex_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2026-09-12_aa8a832e875cccf5fc0069c9c9457ab9_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-09-12_aa8a832e875cccf5fc0069c9c9457ab9_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2556

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/2556-0-0x0000000000400000-0x00000000006A9000-memory.dmp

Download

memory/2556-1-0x0000000000400000-0x00000000006A9000-memory.dmp