expiro | 1ef3588cc0fbd744344368dffb6d6b8b6dd552d27303dbaef8c6395a9d67d3f3

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
08/08/2026, 12:01

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General

Target
2026-08-08_10d9c6e26c6270ea8fb701fefe71dd5d_elex_wannacry.exe
Size 834KB
Sample260808-n69xnseq7y
SHA256 1ef3588cc0fbd744344368dffb6d6b8b6dd552d27303dbaef8c6395a9d67d3f3
MD5 10d9c6e26c6270ea8fb701fefe71dd5d
SHA1 9247cc616ca4f5416040c0427a34cf9b8c44efcb
SHA512 11dd943ee7c8e55f0dd2f87cc069214f2fdce7936c00a909479ce7f2c71aa08866e951faa3c31b6cae547a3017e66a6bac57ebc2eccdf774ad97a51e1c9f401d
SSDEEP 12288:jUCztyBi0tyLp8rlA3s5/AUFQM/gst4fy+/Hqd6/rYN+l:FzB6rlge/AGQE14vHqd6/kN
TLSH
T1D8059FD2BBB5C476C9760431C68DC18361ECDB37E86157A2A2C92A7F4A708C1C753BDA
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/4888-1-0x0000000000400000-0x00000000005EF000-memory.dmp	family_expiro1

Detects executables packed with VMProtect. 2 IoCs

resource	yara_rule
behavioral1/memory/4888-0-0x0000000000400000-0x00000000005EF000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/4888-1-0x0000000000400000-0x00000000005EF000-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	2026-08-08_10d9c6e26c6270ea8fb701fefe71dd5d_elex_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2026-08-08_10d9c6e26c6270ea8fb701fefe71dd5d_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-08_10d9c6e26c6270ea8fb701fefe71dd5d_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:4888

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

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Downloads

memory/4888-0-0x0000000000400000-0x00000000005EF000-memory.dmp

Download

memory/4888-1-0x0000000000400000-0x00000000005EF000-memory.dmp