expiro | 3d9ad0b1884e467119b407037dba0aa61ad2f7a29420424685420bf894fc40f4

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
07-01-2025 17:48

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General

Target

3d9ad0b1884e467119b407037dba0aa61ad2f7a29420424685420bf894fc40f4.exe
Size

336KB
MD5

520da33f49204b5a5f6218522bd4f25b
SHA1

cb7ba579b1a9bc5cb81a4f496a7f4c9ee9b01081
SHA256

3d9ad0b1884e467119b407037dba0aa61ad2f7a29420424685420bf894fc40f4
SHA512

f0df936177f1a736e2fc27c87e772dfdf108f9c8364ed52ea1b02cde6ad04d8efb1cddd2bd0e7e8834fe2ddeeb7975a71eca4cf97b9074108e1028e96385d86a
SSDEEP

6144:LvQsVvq/foYU09n+PZKJv3F62vjDV2bJObT3dof+mz:DqXoD09n6QFRvPwbJObbd++mz

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 4 IoCs

backdoor

resource	yara_rule
behavioral1/memory/1500-0-0x0000000000458000-0x000000000047F000-memory.dmp	family_expiro1
behavioral1/memory/1500-1-0x0000000000400000-0x000000000047F000-memory.dmp	family_expiro1
behavioral1/memory/1500-2-0x0000000000458000-0x000000000047F000-memory.dmp	family_expiro1
behavioral1/memory/1500-3-0x0000000000400000-0x000000000047F000-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	3d9ad0b1884e467119b407037dba0aa61ad2f7a29420424685420bf894fc40f4.exe

C:\Users\Admin\AppData\Local\Temp\3d9ad0b1884e467119b407037dba0aa61ad2f7a29420424685420bf894fc40f4.exe
"C:\Users\Admin\AppData\Local\Temp\3d9ad0b1884e467119b407037dba0aa61ad2f7a29420424685420bf894fc40f4.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:1500

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/1500-0-0x0000000000458000-0x000000000047F000-memory.dmp

Filesize
156KB

Download
memory/1500-1-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1500-2-0x0000000000458000-0x000000000047F000-memory.dmp

Filesize
156KB

Download
memory/1500-3-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download