expiro | 1b137a226d495f42d56cc886f682deec14132d59bd963a0a5f70f25338d82b74

Analysis

max time kernel
12s
max time network
19s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
07-02-2025 23:34

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General

Target

1b137a226d495f42d56cc886f682deec14132d59bd963a0a5f70f25338d82b74.exe
Size

560KB
MD5

9ddf90e850d4f14356e21952e83f5e5b
SHA1

35a893647f52a20ccb0929902fe45bced5e55256
SHA256

1b137a226d495f42d56cc886f682deec14132d59bd963a0a5f70f25338d82b74
SHA512

7c05b9c85df0d56f8e0d7cab592bb44ca1b501b808dd468de1660dab4ed4db1285d10e74a0ead0db106e8355dd5d12897f8451d8e935435f3919134add800cec
SSDEEP

12288:uU21WxWIQbsXlZHzNyikxjF8tTiOyC9YZgx:5Cb6Hz0i4jFMTiOyFM

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/912-2-0x0000000001000000-0x000000000124B000-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	1b137a226d495f42d56cc886f682deec14132d59bd963a0a5f70f25338d82b74.exe

C:\Users\Admin\AppData\Local\Temp\1b137a226d495f42d56cc886f682deec14132d59bd963a0a5f70f25338d82b74.exe
"C:\Users\Admin\AppData\Local\Temp\1b137a226d495f42d56cc886f682deec14132d59bd963a0a5f70f25338d82b74.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:912

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

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Downloads

memory/912-0-0x0000000001000000-0x000000000124B000-memory.dmp

Filesize
2.3MB

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memory/912-1-0x0000000001001000-0x0000000001002000-memory.dmp

Filesize
4KB

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memory/912-2-0x0000000001000000-0x000000000124B000-memory.dmp

Filesize
2.3MB

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