expiro | b3375e5cd7f975a6647ecb8c1be8c766c7af9afb26dd21f523ee801c3663146f

Analysis

max time kernel
95s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26-12-2024 00:25

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General

Target

b3375e5cd7f975a6647ecb8c1be8c766c7af9afb26dd21f523ee801c3663146fN.exe
Size

776KB
MD5

e304ed352ac2a17004d948977a5f6cc0
SHA1

3bdc0c5d8d0da40885e8df6348bf703c1dd2109b
SHA256

b3375e5cd7f975a6647ecb8c1be8c766c7af9afb26dd21f523ee801c3663146f
SHA512

9c768c77524b1a0f94a6fac424e8baa1d8a44f780339e91a33305d0a08c95a9d2101ef3efac8584bed8dcd3a16a5f00ef6b54b3f8972b410c93d717ce3114e50
SSDEEP

12288:vxLVssCpn5K6hYk/1XfvdCbdAQnXKlAptjVqTMAskOhM3xTrLqAt:vxLQi6hP1Xfv4JtgT+gxruk

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
behavioral2/memory/3100-2-0x0000000001000000-0x0000000001280000-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	b3375e5cd7f975a6647ecb8c1be8c766c7af9afb26dd21f523ee801c3663146fN.exe

C:\Users\Admin\AppData\Local\Temp\b3375e5cd7f975a6647ecb8c1be8c766c7af9afb26dd21f523ee801c3663146fN.exe
"C:\Users\Admin\AppData\Local\Temp\b3375e5cd7f975a6647ecb8c1be8c766c7af9afb26dd21f523ee801c3663146fN.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:3100

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/3100-0-0x0000000001000000-0x0000000001280000-memory.dmp

Filesize
2.5MB

Download
memory/3100-1-0x000000000102E000-0x000000000102F000-memory.dmp

Filesize
4KB

Download
memory/3100-2-0x0000000001000000-0x0000000001280000-memory.dmp

Filesize
2.5MB

Download