expiro | 823d83be06133c53b77a88bf40527e02fcde7a50308b8cafeaa20da4cb16652c

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03/01/2025, 03:25

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General

Target

JaffaCakes118_69f061c7b20fe366e290ff8a21f6dbb0.exe
Size

315KB
MD5

69f061c7b20fe366e290ff8a21f6dbb0
SHA1

1c0681f4a2294d6fa5ca8297e9b87c9244103958
SHA256

823d83be06133c53b77a88bf40527e02fcde7a50308b8cafeaa20da4cb16652c
SHA512

a5d3f3f936442e551ae51813e6eb3616e4fdc1793cad1e3d5c332c5db97d0d92846ca13b9f85cb335e11866172fcc5de88dbc3deb5ec59f17435782a257bebd1
SSDEEP

6144:NO3KuljRzG9P/iti+M2sgQ4oOTZi8fiJJHIzZZeYB:T4jRzasb7sghNi8fivHGZZeYB

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/2196-0-0x0000000001052000-0x0000000001079000-memory.dmp	family_expiro1
behavioral1/memory/2196-1-0x0000000001000000-0x0000000001079000-memory.dmp	family_expiro1
behavioral1/memory/2196-2-0x0000000001052000-0x0000000001079000-memory.dmp	family_expiro1
behavioral1/memory/2196-3-0x0000000001000000-0x0000000001079000-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_69f061c7b20fe366e290ff8a21f6dbb0.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_69f061c7b20fe366e290ff8a21f6dbb0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_69f061c7b20fe366e290ff8a21f6dbb0.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2196

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/2196-0-0x0000000001052000-0x0000000001079000-memory.dmp

Filesize
156KB

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memory/2196-1-0x0000000001000000-0x0000000001079000-memory.dmp

Filesize
484KB

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memory/2196-2-0x0000000001052000-0x0000000001079000-memory.dmp

Filesize
156KB

Download
memory/2196-3-0x0000000001000000-0x0000000001079000-memory.dmp

Filesize
484KB

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