expiro | eda1e6ca1521adae3f74d233325b5bd69b1456db8f282d38641403e92de959d3

Analysis

max time kernel
93s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
07/01/2025, 15:51

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

JaffaCakes118_6bbf1b49d45602aed9cc6da689696cf4.exe
Size

7.3MB
MD5

6bbf1b49d45602aed9cc6da689696cf4
SHA1

d6b21deaf83178adef7cabdb424dfb86415a5ba8
SHA256

eda1e6ca1521adae3f74d233325b5bd69b1456db8f282d38641403e92de959d3
SHA512

7500820cf73400ff85a82bf461ebb0e423f1f5d4598d72508dec64a546d393cd2fc0b3748a81d74db9e6821554d7258faa9c83e71cf5d14228f0c8302fda40db
SSDEEP

98304:hxC3ud6MOIvysiwCQKzo5qphIHVruP3WpF3UdE1hZHEdLFLmil+:WGQFMkhgJuP32+dmhZk/l

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
behavioral2/memory/4364-0-0x000000000118E000-0x0000000001221000-memory.dmp	family_expiro1
behavioral2/memory/4364-1-0x0000000000A40000-0x0000000001221000-memory.dmp	family_expiro1
behavioral2/memory/4364-2-0x000000000118E000-0x0000000001221000-memory.dmp	family_expiro1
behavioral2/memory/4364-3-0x0000000000A40000-0x0000000001221000-memory.dmp	family_expiro1

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2140	4364	WerFault.exe	82

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_6bbf1b49d45602aed9cc6da689696cf4.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6bbf1b49d45602aed9cc6da689696cf4.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6bbf1b49d45602aed9cc6da689696cf4.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:4364
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4364 -s 432
  2⤵
  - Program crash
  PID:2140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4364 -ip 4364
1⤵
PID:2560

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

Loading Replay Monitor...

Downloads

memory/4364-0-0x000000000118E000-0x0000000001221000-memory.dmp

Filesize
588KB

Download
memory/4364-1-0x0000000000A40000-0x0000000001221000-memory.dmp

Filesize
7.9MB

Download
memory/4364-2-0x000000000118E000-0x0000000001221000-memory.dmp

Filesize
588KB

Download
memory/4364-3-0x0000000000A40000-0x0000000001221000-memory.dmp

Filesize
7.9MB

Download