expiro | d4b7c63fdb5f768612bba940cc309f20abf11ff14c1661e39ce996114b81f07c

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-01-2025 06:33

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General

Target

JaffaCakes118_52ef5de496554a8a1bd7afe7e0affc15.exe
Size

457KB
MD5

52ef5de496554a8a1bd7afe7e0affc15
SHA1

b09df8988f5b8388147b5a37a899af77b7201d39
SHA256

d4b7c63fdb5f768612bba940cc309f20abf11ff14c1661e39ce996114b81f07c
SHA512

e4fc215dea70a4c47d6866807e85a41fad61920b8d60a6f99c98c7130debc9fe6ed5626ee25c8fad270a19f7dd5da5a79c18c0fd0e3a8cb820e06bd6d0ab6e77
SSDEEP

6144:tZ8EOK99kXsbZiqy9t6AsJZISTkyDr+K++OJ9BB61DZ4p1Rmq0XPVZ6rPgtLwOuX:t6qkt6h2mra+OVB61DZ4/Uq0XttMeyS

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
behavioral1/memory/1696-0-0x0000000010074000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/1696-1-0x0000000010000000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/1696-2-0x0000000010074000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/1696-3-0x0000000010000000-0x0000000010108000-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_52ef5de496554a8a1bd7afe7e0affc15.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_52ef5de496554a8a1bd7afe7e0affc15.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_52ef5de496554a8a1bd7afe7e0affc15.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:1696

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/1696-0-0x0000000010074000-0x0000000010108000-memory.dmp

Filesize
592KB

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memory/1696-1-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

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memory/1696-2-0x0000000010074000-0x0000000010108000-memory.dmp

Filesize
592KB

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memory/1696-3-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

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