expiro | a944e9fd722bd94318663eaae5cd6e168ebef3f3a9e00dbcc00eb997162bc431

Analysis

max time kernel
16s
max time network
16s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-01-2025 15:27

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General

Target

a944e9fd722bd94318663eaae5cd6e168ebef3f3a9e00dbcc00eb997162bc431N.exe
Size

592KB
MD5

ba388a5e50ff055bb51137c5039032f0
SHA1

3ba58815f26e973ac8f25eedbf76270573b5503d
SHA256

a944e9fd722bd94318663eaae5cd6e168ebef3f3a9e00dbcc00eb997162bc431
SHA512

a9b5e4b56b6601a49a09342df2afb58e4d446fb670c5fec75773f4414e2bf1e7cb5067a0842c5ead030f4cb1253c950a2ffa22ae0e742a6d6059fd4fa6c4b2f6
SSDEEP

12288:EAxeUQor1IBfsZydp/CLwENVQwoxe5kzmcLQ2Zy/h9KzHHBq:EAxeUvpOdp/C/Yxgu6cs2Zyh9

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/1980-2-0x0000000001000000-0x00000000011B9000-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	a944e9fd722bd94318663eaae5cd6e168ebef3f3a9e00dbcc00eb997162bc431N.exe

C:\Users\Admin\AppData\Local\Temp\a944e9fd722bd94318663eaae5cd6e168ebef3f3a9e00dbcc00eb997162bc431N.exe
"C:\Users\Admin\AppData\Local\Temp\a944e9fd722bd94318663eaae5cd6e168ebef3f3a9e00dbcc00eb997162bc431N.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:1980

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/1980-0-0x0000000001000000-0x00000000011B9000-memory.dmp

Filesize
1.7MB

Download
memory/1980-1-0x0000000001006000-0x0000000001008000-memory.dmp

Filesize
8KB

Download
memory/1980-2-0x0000000001000000-0x00000000011B9000-memory.dmp

Filesize
1.7MB

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