expiro | fbe58281db30f7aa182834cc8d4c29aea811777b64fe7b97bada8e3da7abf803

Analysis

max time kernel
104s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
14/04/2025, 03:57

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2025-04-14_16232da8ecd20af5c6abf97bccac52cb_black-basta_elex_luca-stealer.exe
Size

588KB
MD5

16232da8ecd20af5c6abf97bccac52cb
SHA1

baf54a4224bb17eba2f6fc35fd3e5630804d61db
SHA256

fbe58281db30f7aa182834cc8d4c29aea811777b64fe7b97bada8e3da7abf803
SHA512

7354c25716a2e83aa2b3ba7afb8a8c01d530ee30de80e20f744cf92ec331bd3572052b76ebf7ad6d972d5d81211f1a44eb85085718dfc2978bf4e11d965b7684
SSDEEP

12288:X/VyVahEoHbITwty9GhZbT1OIMBJiWqBely:XtyVAYM8UBTnKji

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 3 IoCs

backdoor

resource	yara_rule
behavioral1/memory/4192-0-0x00000000008A6000-0x000000000093B000-memory.dmp	family_expiro1
behavioral1/memory/4192-1-0x0000000000810000-0x000000000093B000-memory.dmp	family_expiro1
behavioral1/memory/4192-2-0x00000000008A6000-0x000000000093B000-memory.dmp	family_expiro1

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1896	4192	WerFault.exe	84

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	2025-04-14_16232da8ecd20af5c6abf97bccac52cb_black-basta_elex_luca-stealer.exe

C:\Users\Admin\AppData\Local\Temp\2025-04-14_16232da8ecd20af5c6abf97bccac52cb_black-basta_elex_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-04-14_16232da8ecd20af5c6abf97bccac52cb_black-basta_elex_luca-stealer.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:4192
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4192 -s 280
  2⤵
  - Program crash
  PID:1896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4192 -ip 4192
1⤵
PID:868

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/4192-0-0x00000000008A6000-0x000000000093B000-memory.dmp

Filesize
596KB

Download
memory/4192-1-0x0000000000810000-0x000000000093B000-memory.dmp

Filesize
1.2MB

Download
memory/4192-2-0x00000000008A6000-0x000000000093B000-memory.dmp

Filesize
596KB

Download