expiro | b902709b97bd82ea8652558f3ee43e5b3673b7fe328e288fa207e1251a2c9ca6

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
07-01-2025 04:52

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General

Target

JaffaCakes118_4e8fd930427763c073ab2c5c69eb7b2b.exe
Size

457KB
MD5

4e8fd930427763c073ab2c5c69eb7b2b
SHA1

4464c8670c25862fef86dbeb248d9547afe73470
SHA256

b902709b97bd82ea8652558f3ee43e5b3673b7fe328e288fa207e1251a2c9ca6
SHA512

1a7a65ce8fef0408113cb76f61f363833ce582c7627ab88f362b714f1dda764b90ece09604103b02ddc9ddfd0066c584bc9dec7c21c6c0268669e2e22dc9d607
SSDEEP

6144:TZpEOK99kXlHDIiypzO2SIQTuxo49R5snLuzV9BsSv31jym+IymdgZIYPt6f:TblciydxYKomzzVEG31m5Iy/uYPt

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/2828-0-0x0000000010074000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/2828-1-0x0000000010000000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/2828-2-0x0000000010074000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/2828-3-0x0000000010000000-0x0000000010108000-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_4e8fd930427763c073ab2c5c69eb7b2b.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4e8fd930427763c073ab2c5c69eb7b2b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4e8fd930427763c073ab2c5c69eb7b2b.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2828

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/2828-0-0x0000000010074000-0x0000000010108000-memory.dmp

Filesize
592KB

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memory/2828-1-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

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memory/2828-2-0x0000000010074000-0x0000000010108000-memory.dmp

Filesize
592KB

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memory/2828-3-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

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