expiro | b9fe58c8e76825c1c67bcf9848851810b2497ad1215abe30556e9c4b4d62249c

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03/01/2025, 18:53

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General

Target

JaffaCakes118_6ec78fd3ad79dfc0d185e2a677e7f620.exe
Size

294KB
MD5

6ec78fd3ad79dfc0d185e2a677e7f620
SHA1

7cdb207cecaed63e12b8f47fadfc024b37d287b6
SHA256

b9fe58c8e76825c1c67bcf9848851810b2497ad1215abe30556e9c4b4d62249c
SHA512

c573e8d80ddc33cbacea44a22fc4c90087e34a2e15872e7310e4978ee5cb65f43b23bd9296145dd90d848c50be045d8dbf9761365f088219e8a60875768020a6
SSDEEP

6144:7v+WYKcIDdsUTyEJ3/2X/b4C6ne3xBk3EvK7cA:z+UzZsUTF3ePcC6nK/k3CKL

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/2420-0-0x000000000104D000-0x0000000001074000-memory.dmp	family_expiro1
behavioral1/memory/2420-1-0x0000000001000000-0x0000000001074000-memory.dmp	family_expiro1
behavioral1/memory/2420-2-0x000000000104D000-0x0000000001074000-memory.dmp	family_expiro1
behavioral1/memory/2420-3-0x0000000001000000-0x0000000001074000-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_6ec78fd3ad79dfc0d185e2a677e7f620.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6ec78fd3ad79dfc0d185e2a677e7f620.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6ec78fd3ad79dfc0d185e2a677e7f620.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2420

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/2420-0-0x000000000104D000-0x0000000001074000-memory.dmp

Filesize
156KB

Download
memory/2420-1-0x0000000001000000-0x0000000001074000-memory.dmp

Filesize
464KB

Download
memory/2420-2-0x000000000104D000-0x0000000001074000-memory.dmp

Filesize
156KB

Download
memory/2420-3-0x0000000001000000-0x0000000001074000-memory.dmp

Filesize
464KB

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