expiro | 65081f15080950912eb587f7f2f579e2e8585a861016816a285050bb88fef14b

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
04-01-2025 19:38

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

JaffaCakes118_7b6c3c92f1120491fd953fe77cf67494.exe
Size

474KB
MD5

7b6c3c92f1120491fd953fe77cf67494
SHA1

6b5b6a83f8799e59a5ae279fe529df243898db3f
SHA256

65081f15080950912eb587f7f2f579e2e8585a861016816a285050bb88fef14b
SHA512

656daefa05f8a4bf18ac987d57e279cfe4d2bad56b95fd232db8f1dc15887985f838ab89affbd1e5b315add9081e36929e6cb58de5d35fded76f001f615e2873
SSDEEP

12288:/MxfNtKUY1Ks3VmKVAy3OdLNKVPvfZkAOzT3:/MxrKUYcs3VmKP3ONNKJ6f3

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/4060-1-0x0000000000400000-0x0000000000592000-memory.dmp	family_expiro1

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1844	4060	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_7b6c3c92f1120491fd953fe77cf67494.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b6c3c92f1120491fd953fe77cf67494.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b6c3c92f1120491fd953fe77cf67494.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:4060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4060 -s 516
  2⤵
  - Program crash
  PID:1844

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4060 -ip 4060
1⤵
PID:3520

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/4060-0-0x0000000000400000-0x0000000000592000-memory.dmp

Filesize
1.6MB

Download
memory/4060-1-0x0000000000400000-0x0000000000592000-memory.dmp

Filesize
1.6MB

Download