expiro | a71e40798d736c0c2977825da39b3a59cc3c9f6a0aeb840f9f4538cf1f80ab0d

Analysis

max time kernel
105s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
18/04/2025, 02:37

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2025-04-18_d3f04724768648d2b996eb66ac73586a_black-basta_elex_luca-stealer.exe
Size

5.9MB
MD5

d3f04724768648d2b996eb66ac73586a
SHA1

a21b1f2f5bd3b69088de8bad5b146dd93acdc86c
SHA256

a71e40798d736c0c2977825da39b3a59cc3c9f6a0aeb840f9f4538cf1f80ab0d
SHA512

4d5e1a811a3c96892e4660c6b49f07ef5146243ba75effc89f8a5272f4f6cdefa7755c4dbfebc0b41752c5bf851140a13b45e047eb6e1bf78bcd83faae2ec5a0
SSDEEP

98304:jd/eb1j56MtaOMMsiz8Y9fxLOIWw/ldGs0A8NZpcl+t9mjb6eZUpVbuhKm4Lwal2:jd/eb1j56ibMMsA8YzOIWwB8NZp79k6Q

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 2 IoCs

backdoor

resource	yara_rule
behavioral1/memory/4212-0-0x00000000009F5000-0x0000000000A8A000-memory.dmp	family_expiro1
behavioral1/memory/4212-1-0x00000000009F5000-0x0000000000A8A000-memory.dmp	family_expiro1

Program crash 1 IoCs

pid	pid_target	Process	procid_target
6132	4212	WerFault.exe	86

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	2025-04-18_d3f04724768648d2b996eb66ac73586a_black-basta_elex_luca-stealer.exe

C:\Users\Admin\AppData\Local\Temp\2025-04-18_d3f04724768648d2b996eb66ac73586a_black-basta_elex_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-04-18_d3f04724768648d2b996eb66ac73586a_black-basta_elex_luca-stealer.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:4212
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4212 -s 488
  2⤵
  - Program crash
  PID:6132

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4212 -ip 4212
1⤵
PID:2860

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

Loading Replay Monitor...

Downloads

memory/4212-0-0x00000000009F5000-0x0000000000A8A000-memory.dmp

Filesize
596KB

Download
memory/4212-1-0x00000000009F5000-0x0000000000A8A000-memory.dmp

Filesize
596KB

Download