expiro | 22fc47f1b692f036a6d0ba6d9547192ed9aba1adba5c77d87d1b51ecb9c7a5e8

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
24/01/2025, 16:31

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General

Target

JaffaCakes118_2355177446aeaf352cd26eb1777d2b77.exe
Size

1.0MB
MD5

2355177446aeaf352cd26eb1777d2b77
SHA1

5e9c708bd0b6243d359cfd8ae05852c653f78b4c
SHA256

22fc47f1b692f036a6d0ba6d9547192ed9aba1adba5c77d87d1b51ecb9c7a5e8
SHA512

bee1dd157333b2aaa3281dbd6e2bec5a8171e6c85bf45b4d9bf56b3d3d9f576ccb30711d49be24eac459bbee300fc49f38b6d19ceda8860963d8860d9bd565e4
SSDEEP

24576:clabsM8KGH7Co0OLeGrIocE5lArjPP5999O:cl08KGbNLeGMb4unBk

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/220-1-0x0000000001000000-0x0000000001156000-memory.dmp	family_expiro1

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2020	220	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_2355177446aeaf352cd26eb1777d2b77.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2355177446aeaf352cd26eb1777d2b77.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2355177446aeaf352cd26eb1777d2b77.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:220
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 220 -s 572
  2⤵
  - Program crash
  PID:2020

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 220 -ip 220
1⤵
PID:3968

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/220-0-0x0000000001000000-0x0000000001156000-memory.dmp

Filesize
1.3MB

Download
memory/220-1-0x0000000001000000-0x0000000001156000-memory.dmp

Filesize
1.3MB

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