expiro | 4885674cb5fc076f7908df910fc2f39b01b8ba610e170e1869fc560eb219f72b

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
07-01-2025 05:52

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General

Target

4885674cb5fc076f7908df910fc2f39b01b8ba610e170e1869fc560eb219f72b.exe
Size

691KB
MD5

682a83fe3ca6742ab3c616c989ace9ca
SHA1

eccc255f85f9982afbb3b8abb1e291cb990ad76b
SHA256

4885674cb5fc076f7908df910fc2f39b01b8ba610e170e1869fc560eb219f72b
SHA512

0e36d99c77536575b3c00ea8c03298263fc161a3aa0f68b6227bb4701f1c8ed0aaaf4fc69106f2561154b41a876c9f5ac624973526b42719f6c3ffa8d46b57ef
SSDEEP

12288:iAwlbRfky6B+mCJq4F5ZklvAxopKaLDVed0A0KijP:itlbht6BHuq4FLkmxfanIj0jjP

Score

10^/10

expiro backdoor discovery

Malware Config

Signatures

Expiro family
expiro
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/2360-2-0x0000000000400000-0x00000000005DB000-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	4885674cb5fc076f7908df910fc2f39b01b8ba610e170e1869fc560eb219f72b.exe

C:\Users\Admin\AppData\Local\Temp\4885674cb5fc076f7908df910fc2f39b01b8ba610e170e1869fc560eb219f72b.exe
"C:\Users\Admin\AppData\Local\Temp\4885674cb5fc076f7908df910fc2f39b01b8ba610e170e1869fc560eb219f72b.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2360

Network

MITRE ATT&CK Enterprise v15

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/2360-0-0x0000000000400000-0x00000000005DB000-memory.dmp

Filesize
1.9MB

Download
memory/2360-1-0x000000000040B000-0x000000000040C000-memory.dmp

Filesize
4KB

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memory/2360-2-0x0000000000400000-0x00000000005DB000-memory.dmp

Filesize
1.9MB

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