expiro | e96d8125244349f11b5d13e5ae5feb0000f1741ab846a5206173e549c2269801

Analysis

max time kernel
117s
max time network
117s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05/01/2025, 13:43

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General

Target

JaffaCakes118_a82c114a3a12c3e1ef95d316c3a20435.exe
Size

457KB
MD5

a82c114a3a12c3e1ef95d316c3a20435
SHA1

4fb357061765fd2c9c7a2b144723490d25c43c6f
SHA256

e96d8125244349f11b5d13e5ae5feb0000f1741ab846a5206173e549c2269801
SHA512

165c7e88041402072bdf1f15b9f6d05e99fcdcd9bf87bf915eca2eaf24557c7e9e8e4ba05f0b49bcc91619517913df501ba6198b84e73e5e3cc3a41a21e1946a
SSDEEP

12288:Cc6OU9ZY5HncW5ivReh4W6Opb9Vgi7hVf3P:V+9VCivRecc9VxhVf3

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/3008-0-0x0000000010074000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/3008-1-0x0000000010000000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/3008-2-0x0000000010074000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/3008-3-0x0000000010000000-0x0000000010108000-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_a82c114a3a12c3e1ef95d316c3a20435.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a82c114a3a12c3e1ef95d316c3a20435.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a82c114a3a12c3e1ef95d316c3a20435.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:3008

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/3008-0-0x0000000010074000-0x0000000010108000-memory.dmp

Filesize
592KB

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memory/3008-1-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

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memory/3008-2-0x0000000010074000-0x0000000010108000-memory.dmp

Filesize
592KB

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memory/3008-3-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

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