expiro | b64e2ed624b7d878d680265e2cb5bb0f824dea5e7decc7677b8ed5c06e6e8d95

Analysis

max time kernel
96s
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
01/01/2025, 01:47

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General

Target

JaffaCakes118_42c2ecba382ca7b7f5ae6fe76f2c8569.exe
Size

415KB
MD5

42c2ecba382ca7b7f5ae6fe76f2c8569
SHA1

da4f435ad23ca386604809dc9467330a39e2af23
SHA256

b64e2ed624b7d878d680265e2cb5bb0f824dea5e7decc7677b8ed5c06e6e8d95
SHA512

ce18c1d90f6121096286b8c2605a22e2bb70c21cafbad967122bcb100d699d6a47b902e1927a45fbb96c8143af29c74e42313c4edecaeaf8bd435233d19f6aa5
SSDEEP

12288:WrKyKsimU291v+w04As8mzJB93sBNCG9n:WrKyKsiB0B+w04/Ujn

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 4 IoCs

backdoor

resource	yara_rule
behavioral2/memory/4128-0-0x000000000036B000-0x00000000003FE000-memory.dmp	family_expiro1
behavioral2/memory/4128-1-0x0000000000300000-0x00000000003FE000-memory.dmp	family_expiro1
behavioral2/memory/4128-2-0x000000000036B000-0x00000000003FE000-memory.dmp	family_expiro1
behavioral2/memory/4128-3-0x0000000000300000-0x00000000003FE000-memory.dmp	family_expiro1

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_42c2ecba382ca7b7f5ae6fe76f2c8569.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42c2ecba382ca7b7f5ae6fe76f2c8569.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42c2ecba382ca7b7f5ae6fe76f2c8569.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:4128

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

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Downloads

memory/4128-0-0x000000000036B000-0x00000000003FE000-memory.dmp

Filesize
588KB

Download
memory/4128-1-0x0000000000300000-0x00000000003FE000-memory.dmp

Filesize
1016KB

Download
memory/4128-2-0x000000000036B000-0x00000000003FE000-memory.dmp

Filesize
588KB

Download
memory/4128-3-0x0000000000300000-0x00000000003FE000-memory.dmp

Filesize
1016KB

Download