expiro | 05a91307bf59617d0f211f1ca2432703574a8d4905316d5a764ec11a29e1d92a

Analysis

max time kernel
102s
max time network
113s
platform
windows10-2004_x64
resource
win10v2004-20250410-en
resource tags

arch:x64arch:x86image:win10v2004-20250410-enlocale:en-usos:windows10-2004-x64system
submitted
11/04/2025, 20:28

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General

Target

05a91307bf59617d0f211f1ca2432703574a8d4905316d5a764ec11a29e1d92a.exe
Size

702KB
MD5

dc19117f03df545775ac51a101fb3fa0
SHA1

a04b55518154f1a4fbcd7dc0c4202f7e0a2e9ca2
SHA256

05a91307bf59617d0f211f1ca2432703574a8d4905316d5a764ec11a29e1d92a
SHA512

6e63d8f84896fea0c2336f27a52108277b9aadabe9b5fd4b410e1b6bfcb9860f2f0ffd36ea5b8e77f9451f53738bea8344c95db570841e7b6cf0c9d77ef0efbf
SSDEEP

12288:W6iB+RtBpyPcotJ/7S7p+L14MInNzgFzXiZcezNc27V47G4HdzY/RuqZ9:W6iBmBpyPBtJu7p21BINz6zEcQNc22Ph

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/5940-2-0x0000000000400000-0x0000000000675000-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	05a91307bf59617d0f211f1ca2432703574a8d4905316d5a764ec11a29e1d92a.exe

C:\Users\Admin\AppData\Local\Temp\05a91307bf59617d0f211f1ca2432703574a8d4905316d5a764ec11a29e1d92a.exe
"C:\Users\Admin\AppData\Local\Temp\05a91307bf59617d0f211f1ca2432703574a8d4905316d5a764ec11a29e1d92a.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:5940

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

Replay Monitor

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Downloads

memory/5940-0-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/5940-1-0x0000000000407000-0x0000000000408000-memory.dmp

Filesize
4KB

Download
memory/5940-2-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

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