expiro | 4c6683c21362405fe599930a3956200dd1d61d2c9247cd04f806d349b930a292

Analysis

max time kernel
121s
max time network
126s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-01-2025 16:10

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General

Target

JaffaCakes118_7a99ed338a98bb4ed9a4af9486898af6.exe
Size

530KB
MD5

7a99ed338a98bb4ed9a4af9486898af6
SHA1

bdd5bfa1cf3bd29285ca35c0e602fa6981bb2fd9
SHA256

4c6683c21362405fe599930a3956200dd1d61d2c9247cd04f806d349b930a292
SHA512

3bcd846a880869abdc93aeaa6b87c26c94f6054776d2a89e7e174f43caf896b9c00245b30ceba72521d9664cc796c4a09c364d132124961661a0e3230f741817
SSDEEP

12288:RgsrCkTJrHW8hxDpCqxWL5PDPuDFzJ7M/FiMyiu4BTHyRCJYC9cM3LCPR9Xkii:RgHkjdXxWNPDPuDFzJYFiMyyBTHyRwYc

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
behavioral1/memory/2592-2-0x0000000001000000-0x00000000011A0000-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_7a99ed338a98bb4ed9a4af9486898af6.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a99ed338a98bb4ed9a4af9486898af6.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a99ed338a98bb4ed9a4af9486898af6.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2592

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/2592-0-0x0000000001000000-0x00000000011A0000-memory.dmp

Filesize
1.6MB

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memory/2592-1-0x0000000000C70000-0x0000000000E10000-memory.dmp

Filesize
1.6MB

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memory/2592-2-0x0000000001000000-0x00000000011A0000-memory.dmp

Filesize
1.6MB

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