expiro | f2dff3754e2671ede638ac10acbb20cb2fc219d7d7c851b39ce5f23520b6c538

Analysis

max time kernel
13s
max time network
19s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
04-01-2025 07:26

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General

Target

JaffaCakes118_786d442aef7c2cc22f4b721af0b86ce0.exe
Size

331KB
MD5

786d442aef7c2cc22f4b721af0b86ce0
SHA1

d716e30b381c229727a85945fc0f83bb3578c977
SHA256

f2dff3754e2671ede638ac10acbb20cb2fc219d7d7c851b39ce5f23520b6c538
SHA512

271c469db26411e8a25be1987ef738c46edb8bb08f00cc41b7432f8a8a138eef76dd1e72cd6fbfad5159be079f657e9159e358e92eaf403c91ab7030fdc1855f
SSDEEP

6144:UWOWCm+/c7R8Hm2rua/hp+oBobI7Qx1ISdqfpuHULu1doutnjJhLASzu:RMU7R8Bf/hp+oBoAnpu0aTzRz

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 4 IoCs

backdoor

resource	yara_rule
behavioral1/memory/2108-0-0x0000000001056000-0x000000000107D000-memory.dmp	family_expiro1
behavioral1/memory/2108-3-0x0000000001000000-0x000000000107D000-memory.dmp	family_expiro1
behavioral1/memory/2108-2-0x0000000001056000-0x000000000107D000-memory.dmp	family_expiro1
behavioral1/memory/2108-1-0x0000000001000000-0x000000000107D000-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_786d442aef7c2cc22f4b721af0b86ce0.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_786d442aef7c2cc22f4b721af0b86ce0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_786d442aef7c2cc22f4b721af0b86ce0.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2108

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/2108-0-0x0000000001056000-0x000000000107D000-memory.dmp

Filesize
156KB

Download
memory/2108-3-0x0000000001000000-0x000000000107D000-memory.dmp

Filesize
500KB

Download
memory/2108-2-0x0000000001056000-0x000000000107D000-memory.dmp

Filesize
156KB

Download
memory/2108-1-0x0000000001000000-0x000000000107D000-memory.dmp

Filesize
500KB

Download