expiro | d0990156894d92532de53458076009a87eda920c60895b8ae30492f23840c939

Analysis

max time kernel
121s
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 09:22

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General

Target

JaffaCakes118_78e71965027db6ec8ef643283f3ce709.exe
Size

532KB
MD5

78e71965027db6ec8ef643283f3ce709
SHA1

9fc735153301ebceb48f93e02f47a4210e1e2899
SHA256

d0990156894d92532de53458076009a87eda920c60895b8ae30492f23840c939
SHA512

bd46974c67be9061444b51b3fee04c7ade0419e223c960e00824b14a106a8081499f8a4442f00495d5ef472d2c44f26baf1387a7f28707c2c1f0cfae55dc95ae
SSDEEP

12288:vRCRAgZtxZATV1Y8p8kVl/I6XpwWluEdJ1kCw:pS5ZpA35XlEEdpw

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 2 IoCs

backdoor

resource	yara_rule
behavioral1/memory/2228-0-0x0000000000400000-0x00000000005AE000-memory.dmp	family_expiro1
behavioral1/memory/2228-2-0x0000000000400000-0x00000000005AE000-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_78e71965027db6ec8ef643283f3ce709.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_78e71965027db6ec8ef643283f3ce709.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_78e71965027db6ec8ef643283f3ce709.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2228

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/2228-0-0x0000000000400000-0x00000000005AE000-memory.dmp

Filesize
1.7MB

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memory/2228-1-0x0000000000403000-0x0000000000404000-memory.dmp

Filesize
4KB

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memory/2228-2-0x0000000000400000-0x00000000005AE000-memory.dmp

Filesize
1.7MB

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