expiro | 6169d2766d9eeb6dde79c1a260004b97b378d711025d97a86f6c1c3362acb9cd

Analysis

max time kernel
95s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-01-2025 19:52

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General

Target

JaffaCakes118_7b7958a2b0825e7211f5e2798b62f9e0.exe
Size

474KB
MD5

7b7958a2b0825e7211f5e2798b62f9e0
SHA1

ad26f68eb0762f2ad2f540bb40eb87a614e26bdd
SHA256

6169d2766d9eeb6dde79c1a260004b97b378d711025d97a86f6c1c3362acb9cd
SHA512

24667787ecbe50bc142bb3d21d51d4a8ec8c58bd2b3713e9a4a89ae8d85a046b3abec6dee9634e790ba09c9ce8ea70b8d09811d1be50883dccf5485d473175a8
SSDEEP

12288:eMxjNtKUY1Ks3VmKVAy3OdLNKVPXTOXLi0yvASH+:eMx/KUYcs3VmKP3ONNKMi9vASe

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/3208-1-0x0000000000400000-0x0000000000592000-memory.dmp	family_expiro1

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3960	3208	WerFault.exe	81

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_7b7958a2b0825e7211f5e2798b62f9e0.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b7958a2b0825e7211f5e2798b62f9e0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b7958a2b0825e7211f5e2798b62f9e0.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:3208
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3208 -s 516
  2⤵
  - Program crash
  PID:3960

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3208 -ip 3208
1⤵
PID:4852

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/3208-0-0x0000000000400000-0x0000000000592000-memory.dmp

Filesize
1.6MB

Download
memory/3208-1-0x0000000000400000-0x0000000000592000-memory.dmp

Filesize
1.6MB

Download