expiro | 7c11fd84c785ab18e8a6e5c9703c6019640972ec5839bb1e805053e8a9ca4128

Analysis

max time kernel
96s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
22-02-2025 02:18

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General

Target

JaffaCakes118_16abc96b849f091a538a1609025dae00.exe
Size

407KB
MD5

16abc96b849f091a538a1609025dae00
SHA1

aedad732b939f5316613c3971c81393d40b8b055
SHA256

7c11fd84c785ab18e8a6e5c9703c6019640972ec5839bb1e805053e8a9ca4128
SHA512

1854b80f5b66e2e39d3d015e16d161ed62de1520d9d1d10cbe2c48fda2e40b423faad3bc01df9a4d5f7fa4f2aed3464b50263ab4917dc42d0b3ca6e0ee67cfd6
SSDEEP

6144:CLmSi2xLwgxgv/srWpAVs5uPD6h9mrecs0M69Bd+9CS+FPR2F8TFL:8xLVssCpn5K6hsk0MEBd+9V+FPRX

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/5204-1-0x0000000001000000-0x00000000010B3000-memory.dmp	family_expiro1

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2892	5204	WerFault.exe	84

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_16abc96b849f091a538a1609025dae00.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_16abc96b849f091a538a1609025dae00.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_16abc96b849f091a538a1609025dae00.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:5204
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5204 -s 512
  2⤵
  - Program crash
  PID:2892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 5204 -ip 5204
1⤵
PID:3464

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/5204-0-0x0000000001000000-0x00000000010B3000-memory.dmp

Filesize
716KB

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memory/5204-1-0x0000000001000000-0x00000000010B3000-memory.dmp

Filesize
716KB

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