expiro | 94e3f516560cec6920e0ed6cc9d67cc242c4ee2afc082a9d691bd1de70dbac21

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
06-01-2025 10:01

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General

Target

JaffaCakes118_1d2c3ff1a463a82445956ecea3f6acca.exe
Size

457KB
MD5

1d2c3ff1a463a82445956ecea3f6acca
SHA1

d0ae4b4dfdc355306f3668a15ad33dfa31b1670d
SHA256

94e3f516560cec6920e0ed6cc9d67cc242c4ee2afc082a9d691bd1de70dbac21
SHA512

e65f075b2dcb93a253c843306b55a0a81ae30959ff1a7f9e550258ddf3b2f60b983ba40b12bf7f658d62627e23ef6808ccb6e21121013d338083d68301c85b73
SSDEEP

6144:rZCEOK99kXHKt9P/lp/keWriHQJpxIdF18SGbH/TGQju2JPWu9SUiXaz7HI7cO/P:rsHQP/lp/ke0VGF1UHbHycSUrzbgc

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
behavioral2/memory/4420-0-0x0000000010074000-0x0000000010108000-memory.dmp	family_expiro1
behavioral2/memory/4420-1-0x0000000010000000-0x0000000010108000-memory.dmp	family_expiro1
behavioral2/memory/4420-2-0x0000000010074000-0x0000000010108000-memory.dmp	family_expiro1
behavioral2/memory/4420-3-0x0000000010000000-0x0000000010108000-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_1d2c3ff1a463a82445956ecea3f6acca.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1d2c3ff1a463a82445956ecea3f6acca.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1d2c3ff1a463a82445956ecea3f6acca.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:4420

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/4420-0-0x0000000010074000-0x0000000010108000-memory.dmp

Filesize
592KB

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memory/4420-1-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

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memory/4420-2-0x0000000010074000-0x0000000010108000-memory.dmp

Filesize
592KB

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memory/4420-3-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

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