expiro | bcaa0681f917adde7069be529547e050e7a560040ea7421be331a9683d8faede

Analysis

max time kernel
122s
max time network
127s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-01-2025 19:49

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General

Target

JaffaCakes118_60538320504f9d01f9167406c1246ab0.exe
Size

297KB
MD5

60538320504f9d01f9167406c1246ab0
SHA1

c2d5794578e6be606f46f4291fa90c40d7c78476
SHA256

bcaa0681f917adde7069be529547e050e7a560040ea7421be331a9683d8faede
SHA512

d7142378d4082d0b5f58b312a8d52e71f0448c5c3746eb66721711f3bf4b482be7ef82da60cbfd669254822c31a2e474adea47c486dadd06c634afedf3e7469e
SSDEEP

6144:bZndzvmUsrddTXMXQDlB0p7HCszGc1JykLR1f8IkfNtU+dIjQeRO+l+u:NnVeUC8AMRHC0GiJykPfeNtU+GjQ/a+

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/1640-0-0x000000000104E000-0x0000000001075000-memory.dmp	family_expiro1
behavioral1/memory/1640-1-0x0000000001000000-0x0000000001075000-memory.dmp	family_expiro1
behavioral1/memory/1640-2-0x000000000104E000-0x0000000001075000-memory.dmp	family_expiro1
behavioral1/memory/1640-3-0x0000000001000000-0x0000000001075000-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_60538320504f9d01f9167406c1246ab0.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_60538320504f9d01f9167406c1246ab0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_60538320504f9d01f9167406c1246ab0.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:1640

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/1640-0-0x000000000104E000-0x0000000001075000-memory.dmp

Filesize
156KB

Download
memory/1640-1-0x0000000001000000-0x0000000001075000-memory.dmp

Filesize
468KB

Download
memory/1640-2-0x000000000104E000-0x0000000001075000-memory.dmp

Filesize
156KB

Download
memory/1640-3-0x0000000001000000-0x0000000001075000-memory.dmp

Filesize
468KB

Download