expiro | 51524306f5f6e2a62f2a0816f9e2e1921f2c4e410e9b0c3bdec694aa6d9b1175

Analysis

max time kernel
95s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01-01-2025 13:54

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General

Target

JaffaCakes118_57b472d959f52f9384985b671d63637d.exe
Size

692KB
MD5

57b472d959f52f9384985b671d63637d
SHA1

c48ff25c4f3136043f935f3368f94c3a87c6905d
SHA256

51524306f5f6e2a62f2a0816f9e2e1921f2c4e410e9b0c3bdec694aa6d9b1175
SHA512

4df59d344b0df63ed7f26a1cec6416eaae9d0874874824118a38cc2985994744e5d0e33ecf6b1b7631b73cd1d4fa3f9042792b74b660bd6b978a30647497d7e1
SSDEEP

12288:Ri4VPLqeElcsLbU80HMpcXoeXGF2lEP/RVggZTVtPk/54cBr7GNmNe4:3ueXGx0gZTVtPk/5Y

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/2384-2-0x0000000001000000-0x00000000011DC000-memory.dmp	family_expiro1

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\FONTS\eudcadm.tte	JaffaCakes118_57b472d959f52f9384985b671d63637d.exe

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_57b472d959f52f9384985b671d63637d.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2384	JaffaCakes118_57b472d959f52f9384985b671d63637d.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_57b472d959f52f9384985b671d63637d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_57b472d959f52f9384985b671d63637d.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:2384

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/2384-0-0x0000000001000000-0x00000000011DC000-memory.dmp

Filesize
1.9MB

Download
memory/2384-1-0x0000000001025000-0x0000000001026000-memory.dmp

Filesize
4KB

Download
memory/2384-2-0x0000000001000000-0x00000000011DC000-memory.dmp

Filesize
1.9MB

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