expiro | a517dfbc9eb5e1956616771bf13f6289ad8fb4c49d473f5bff6e4e3fa105932d

Analysis

max time kernel
94s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03/01/2025, 05:10

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General

Target

JaffaCakes118_6a6b69aa7473924e4902571d59ff2d70.exe
Size

595KB
MD5

6a6b69aa7473924e4902571d59ff2d70
SHA1

d626c75565385bf9ac72b313601088d13a5cf0d3
SHA256

a517dfbc9eb5e1956616771bf13f6289ad8fb4c49d473f5bff6e4e3fa105932d
SHA512

f1847d178769c04ef16b1e850a03a6e479942c7c7b5c627df7d39cec429eb4d3f3beb277e44b25e162409e1a4c3c1ff97c5f306921c93c5e36cb34d7805d4009
SSDEEP

12288:xNXinJn6R5z1GUqMPCsbIWuh4epM+vxJd+18biBqMw3o7wVTK:xNyJn6R5zwUqMzcWuh4epMWF6wTVTK

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/3988-2-0x0000000001000000-0x0000000001254000-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	JaffaCakes118_6a6b69aa7473924e4902571d59ff2d70.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000_Classes\Local Settings	JaffaCakes118_6a6b69aa7473924e4902571d59ff2d70.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3988	JaffaCakes118_6a6b69aa7473924e4902571d59ff2d70.exe
3692	OpenWith.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6a6b69aa7473924e4902571d59ff2d70.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6a6b69aa7473924e4902571d59ff2d70.exe"
1⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:3988

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Suspicious use of SetWindowsHookEx
PID:3692

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/3988-0-0x0000000001000000-0x0000000001254000-memory.dmp

Filesize
2.3MB

Download
memory/3988-1-0x0000000001002000-0x0000000001003000-memory.dmp

Filesize
4KB

Download
memory/3988-2-0x0000000001000000-0x0000000001254000-memory.dmp

Filesize
2.3MB

Download