expiro | 73633d9be1cce37b026f944787b97df658f80fcb031bb805735b6eae077c624c

Analysis

max time kernel
134s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-01-2025 11:34

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General

Target

JaffaCakes118_9d40173c5a228ae42da927a557fae06b.exe
Size

457KB
MD5

9d40173c5a228ae42da927a557fae06b
SHA1

d441f072edaf171aee1222d692f3030517e19187
SHA256

73633d9be1cce37b026f944787b97df658f80fcb031bb805735b6eae077c624c
SHA512

7b58b8b137e73f5d1e6fdc030ed80389473cbc60e841a6f728a1831fef9ef02a0ca1ad0267cf591d70b8d212e9c9261f4d1974968cb5310b077ab52a996ddb63
SSDEEP

6144:NZXEOK99kXZpRt+G9DZNWBh5XUHgfN0EpoLh44Q/V7VHalR9NjxJ9ksMF:N15Ah5dgh44ud1ChP+F

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/1236-0-0x0000000010074000-0x0000000010108000-memory.dmp	family_expiro1
behavioral2/memory/1236-1-0x0000000010000000-0x0000000010108000-memory.dmp	family_expiro1
behavioral2/memory/1236-2-0x0000000010074000-0x0000000010108000-memory.dmp	family_expiro1
behavioral2/memory/1236-3-0x0000000010000000-0x0000000010108000-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_9d40173c5a228ae42da927a557fae06b.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9d40173c5a228ae42da927a557fae06b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9d40173c5a228ae42da927a557fae06b.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:1236

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/1236-0-0x0000000010074000-0x0000000010108000-memory.dmp

Filesize
592KB

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memory/1236-1-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

Download
memory/1236-2-0x0000000010074000-0x0000000010108000-memory.dmp

Filesize
592KB

Download
memory/1236-3-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

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