expiro | 83ec4fe027fdb20c79a3b8211e977dbc2d6b779400d0edcb3d960829bfd93ecb

Analysis

max time kernel
118s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04/01/2025, 04:47

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General

Target

JaffaCakes118_77b645019c75dc02aafc0eb4c2b09f17.exe
Size

608KB
MD5

77b645019c75dc02aafc0eb4c2b09f17
SHA1

0af8dd4b5240967a8e8cb45591b281c11648a87f
SHA256

83ec4fe027fdb20c79a3b8211e977dbc2d6b779400d0edcb3d960829bfd93ecb
SHA512

2a6dfc102f3825b5523c168de1613f1ce4579824bfdb19f8f2f4cb8642470499bee869910c2185e0c921dabd598449bddb1f1e835181b602a5214dd85e21f1cd
SSDEEP

12288:/F9Gt8QBhGwYgRF6Ajq0PAHIGAHepG0JzwK1mhR3hZjKBDq:t+hAgRFNeIGAHeji37+k

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/2436-0-0x0000000001000000-0x00000000011C6000-memory.dmp	family_expiro1
behavioral1/memory/2436-2-0x0000000001000000-0x00000000011C6000-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_77b645019c75dc02aafc0eb4c2b09f17.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_77b645019c75dc02aafc0eb4c2b09f17.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_77b645019c75dc02aafc0eb4c2b09f17.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2436

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/2436-0-0x0000000001000000-0x00000000011C6000-memory.dmp

Filesize
1.8MB

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memory/2436-1-0x000000000100A000-0x000000000100B000-memory.dmp

Filesize
4KB

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memory/2436-2-0x0000000001000000-0x00000000011C6000-memory.dmp

Filesize
1.8MB

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