expiro | a12bba8061d976ae40d1ca75f137da6457085c3cab0d07907fd99e45de0b2c63

Analysis

max time kernel
120s
max time network
16s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-01-2025 13:52

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General

Target

a12bba8061d976ae40d1ca75f137da6457085c3cab0d07907fd99e45de0b2c63N.exe
Size

654KB
MD5

b78670044996b3407f94973ba68956c0
SHA1

3bb2e619f8da03c8a36d7889fa999da9553dad2e
SHA256

a12bba8061d976ae40d1ca75f137da6457085c3cab0d07907fd99e45de0b2c63
SHA512

2f0d6205012c70f9a82cb53283dc691851b8f6a0bd1525651910c4eed51a4cd166df7a8085b1128bd26a2fdcd552c68c082847b14c1b0116ff8ffeff23db785f
SSDEEP

12288:+rZgwK+8fMCtlxhh77Om/gL0JJTGWC7tTe06KV+NV5CHFVzJ+hW7aSmfbLy9FA:+rZ9/89zxhhOmILGJTGWCVIcyVGFVzJq

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
behavioral1/memory/2708-2-0x0000000001000000-0x0000000001269000-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	a12bba8061d976ae40d1ca75f137da6457085c3cab0d07907fd99e45de0b2c63N.exe

C:\Users\Admin\AppData\Local\Temp\a12bba8061d976ae40d1ca75f137da6457085c3cab0d07907fd99e45de0b2c63N.exe
"C:\Users\Admin\AppData\Local\Temp\a12bba8061d976ae40d1ca75f137da6457085c3cab0d07907fd99e45de0b2c63N.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2708

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/2708-1-0x00000000009A0000-0x0000000000C09000-memory.dmp

Filesize
2.4MB

Download
memory/2708-0-0x0000000001000000-0x0000000001269000-memory.dmp

Filesize
2.4MB

Download
memory/2708-2-0x0000000001000000-0x0000000001269000-memory.dmp

Filesize
2.4MB

Download