expiro | 3c3cc40a63d357e4a8bc5fe75ab10e39277de492a87ba250615c6896e3339917

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
05-01-2025 08:29

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General

Target

JaffaCakes118_97b40345cbac2248927ffaf0581d60ea.exe
Size

457KB
MD5

97b40345cbac2248927ffaf0581d60ea
SHA1

5575a2bd6120536bd43dfd2f923ed9ecb746011b
SHA256

3c3cc40a63d357e4a8bc5fe75ab10e39277de492a87ba250615c6896e3339917
SHA512

987c470915c3555d793e6c2fcff41c3543b174ef8c1970843894dae17d0d4b74d0a668ca82da1535ba65108923636a5e1aca51a770c7756f118ce0fa13504328
SSDEEP

6144:lZAEOK99kXlbZKam2aRaeqFbD1bHYEZxszBAkwaYlbbzb/ut9x48cPor9o4RP6PJ:lGl1KaU8eIbdEKlbb/ut9u8caRyPp2

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/2020-0-0x0000000010074000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/2020-1-0x0000000010000000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/2020-2-0x0000000010074000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/2020-3-0x0000000010000000-0x0000000010108000-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_97b40345cbac2248927ffaf0581d60ea.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_97b40345cbac2248927ffaf0581d60ea.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_97b40345cbac2248927ffaf0581d60ea.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2020

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/2020-0-0x0000000010074000-0x0000000010108000-memory.dmp

Filesize
592KB

Download
memory/2020-1-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

Download
memory/2020-2-0x0000000010074000-0x0000000010108000-memory.dmp

Filesize
592KB

Download
memory/2020-3-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

Download