expiro | e37ac3c349a21d35b0fbe6ecf4e7512bd919f6283ceeaf754800a10744e397d5

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
26-01-2025 06:53

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General

Target

e37ac3c349a21d35b0fbe6ecf4e7512bd919f6283ceeaf754800a10744e397d5.exe
Size

755KB
MD5

4dcf11c8230e4dc5c56df5450494741b
SHA1

25ec684461774bf41de06fc35bbf56e83afa9b66
SHA256

e37ac3c349a21d35b0fbe6ecf4e7512bd919f6283ceeaf754800a10744e397d5
SHA512

1822df9356d1ec5eae98ebcb84c9b1e8599af60670778f3f3068ea6681f378986aeaeb041e00a48b336255fb43e0fb9fc57e79ffe2b757ac12372dbfbde21c24
SSDEEP

12288:x7gKNkhm/JuyXnPB+h8WHtFRDNMD7rFmKJYjaVA0bI/e5zdOgTQq:x7zNkhm5PBXoFRBYkSYjaVA6I21dOgT

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/2256-0-0x0000000000400000-0x000000000067E000-memory.dmp	family_expiro1
behavioral1/memory/2256-2-0x0000000000400000-0x000000000067E000-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	e37ac3c349a21d35b0fbe6ecf4e7512bd919f6283ceeaf754800a10744e397d5.exe

C:\Users\Admin\AppData\Local\Temp\e37ac3c349a21d35b0fbe6ecf4e7512bd919f6283ceeaf754800a10744e397d5.exe
"C:\Users\Admin\AppData\Local\Temp\e37ac3c349a21d35b0fbe6ecf4e7512bd919f6283ceeaf754800a10744e397d5.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2256

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

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Downloads

memory/2256-0-0x0000000000400000-0x000000000067E000-memory.dmp

Filesize
2.5MB

Download
memory/2256-1-0x000000000040B000-0x000000000040C000-memory.dmp

Filesize
4KB

Download
memory/2256-2-0x0000000000400000-0x000000000067E000-memory.dmp

Filesize
2.5MB

Download