expiro | c3125bbbc460d3df6e6125e3acb29e34c0ae2447cf79b2a671b7da9ca710d18a

Analysis

max time kernel
121s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-01-2025 01:39

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General

Target

JaffaCakes118_8311f3898e4b454d59489773c4e7592b.exe
Size

457KB
MD5

8311f3898e4b454d59489773c4e7592b
SHA1

41debdd32a388f72d3200a3610adfa41db0e1f4d
SHA256

c3125bbbc460d3df6e6125e3acb29e34c0ae2447cf79b2a671b7da9ca710d18a
SHA512

b8f9572ad414cd0b636bf093c2bee284c2e3182c828dbdd7db48e6e009151a80b0d16dfeb31ccc52324101ca52620095a850e3e5f1a127e3b9e42a888f64e54d
SSDEEP

12288:0OFgMNkqcXDvPLAsdFTvbNjjSXN2mEmFioL1rny:xeqcTvj3d5RjjCs02

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/1720-0-0x0000000010074000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/1720-1-0x0000000010000000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/1720-3-0x0000000010000000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/1720-2-0x0000000010074000-0x0000000010108000-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_8311f3898e4b454d59489773c4e7592b.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8311f3898e4b454d59489773c4e7592b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8311f3898e4b454d59489773c4e7592b.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:1720

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/1720-0-0x0000000010074000-0x0000000010108000-memory.dmp

Filesize
592KB

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memory/1720-1-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

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memory/1720-3-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

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memory/1720-2-0x0000000010074000-0x0000000010108000-memory.dmp

Filesize
592KB

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