expiro | 739cd2ddf8fb0900b57375bff46fb23329aed801781ef4cacf77875be6311660

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
04-01-2025 05:07

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General

Target

JaffaCakes118_77cc31ea17e133d60b5d74dca3e1f3d0.exe
Size

1.2MB
MD5

77cc31ea17e133d60b5d74dca3e1f3d0
SHA1

9a3779e24933f5715bc79092a7286472f7c177b6
SHA256

739cd2ddf8fb0900b57375bff46fb23329aed801781ef4cacf77875be6311660
SHA512

d64e82a522d16de99656c5ca6658a8c315b4ee32033c9200a6d4eb0407a98971d295152506399df8e1c61caec6efb36f3965c4233da1da319f9e21659cf36e75
SSDEEP

24576:Pmu7u0bYXJLMWUfXgMg1KAi6bGNO0In8drhMp:PmRXefXgMg1KZPNOhnD

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 5 IoCs

backdoor

resource	yara_rule
behavioral1/memory/1968-0-0x0000000000543000-0x000000000056B000-memory.dmp	family_expiro1
behavioral1/memory/1968-1-0x0000000000400000-0x000000000056B000-memory.dmp	family_expiro1
behavioral1/memory/1968-2-0x0000000000400000-0x000000000056B000-memory.dmp	family_expiro1
behavioral1/memory/1968-3-0x0000000000543000-0x000000000056B000-memory.dmp	family_expiro1
behavioral1/memory/1968-4-0x0000000000400000-0x000000000056B000-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_77cc31ea17e133d60b5d74dca3e1f3d0.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_77cc31ea17e133d60b5d74dca3e1f3d0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_77cc31ea17e133d60b5d74dca3e1f3d0.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:1968

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/1968-0-0x0000000000543000-0x000000000056B000-memory.dmp

Filesize
160KB

Download
memory/1968-1-0x0000000000400000-0x000000000056B000-memory.dmp

Filesize
1.4MB

Download
memory/1968-2-0x0000000000400000-0x000000000056B000-memory.dmp

Filesize
1.4MB

Download
memory/1968-3-0x0000000000543000-0x000000000056B000-memory.dmp

Filesize
160KB

Download
memory/1968-4-0x0000000000400000-0x000000000056B000-memory.dmp

Filesize
1.4MB

Download