expiro | 97593ba55d34ec6e87d546c2f01c0f8cca44409cf7c87faa921c56331665c145

Analysis

max time kernel
104s
max time network
135s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
15/04/2025, 04:12

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General

Target

2025-04-15_5b387774737b71540e5a2a294cf610c7_black-basta_elex_luca-stealer.exe
Size

588KB
MD5

5b387774737b71540e5a2a294cf610c7
SHA1

a806a452355db3b48b1e6463145a89ec56211e09
SHA256

97593ba55d34ec6e87d546c2f01c0f8cca44409cf7c87faa921c56331665c145
SHA512

f6072ee7c94b71b093fdd26043603a03a8191e9e6ef5bab2f80d2db1914bfaefd5979a031df0e40bc9fed1ce67c56ce4932be6e1b0f48c2fba4103ec1abd4012
SSDEEP

6144:odeKzC/leySeaAIqpoHbnDns1ND9VxNC0aHFjpA7olA06BCgGrgokgNooVrY/U3m:o/VyVahEoHbI3TajpAKAZBl091BKjA

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/2404-0-0x0000000000666000-0x0000000000697000-memory.dmp	family_expiro1
behavioral1/memory/2404-1-0x00000000005D0000-0x0000000000697000-memory.dmp	family_expiro1
behavioral1/memory/2404-2-0x0000000000666000-0x0000000000697000-memory.dmp	family_expiro1

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2216	2404	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	2025-04-15_5b387774737b71540e5a2a294cf610c7_black-basta_elex_luca-stealer.exe

C:\Users\Admin\AppData\Local\Temp\2025-04-15_5b387774737b71540e5a2a294cf610c7_black-basta_elex_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-04-15_5b387774737b71540e5a2a294cf610c7_black-basta_elex_luca-stealer.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2404 -s 284
  2⤵
  - Program crash
  PID:2216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2404 -ip 2404
1⤵
PID:5960

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

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Downloads

memory/2404-0-0x0000000000666000-0x0000000000697000-memory.dmp

Filesize
196KB

Download
memory/2404-1-0x00000000005D0000-0x0000000000697000-memory.dmp

Filesize
796KB

Download
memory/2404-2-0x0000000000666000-0x0000000000697000-memory.dmp

Filesize
196KB

Download