expiro | 8ff242a5decf90c7a1a9f98e621d347c0c8923d23d58b866713001676c00da60

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20250207-en
resource tags

arch:x64arch:x86image:win7-20250207-enlocale:en-usos:windows7-x64system
submitted
12-02-2025 11:08

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General

Target

JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Size

221KB
MD5

efca5b4c5fd58b63d0849b344da07356
SHA1

0be9545f57a170eb96b7c8ff42c6c7e00a155d28
SHA256

8ff242a5decf90c7a1a9f98e621d347c0c8923d23d58b866713001676c00da60
SHA512

18f48f41c2015688c1b40759df4d5add5eb3b663cf195c49dc7408b4c2c8db0dbb7adf3926aad4f258ae8c9cedfbe4f3d52e4c0898951c97c526c3970857ba79
SSDEEP

6144:zDzwcnJ67K/a/E6znok3VY3tGYG3nrFzWqmoz6:zZ6p5zoQ63GKq

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 2 IoCs

backdoor

resource	yara_rule
behavioral1/memory/2556-0-0x0000000001000000-0x0000000001084000-memory.dmp	family_expiro1
behavioral1/memory/2556-2-0x0000000001000000-0x0000000001084000-memory.dmp	family_expiro1

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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_efca5b4c5fd58b63d0849b344da07356.exe

Modifies registry class 12 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.wab	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.vcf	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.vcf\ = "vcard_wab_auto_file"	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\ = "vCard File"	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\DefaultIcon	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.vcf\Content Type = "text/x-vcard"	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\shell\open\command	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\shell\open\command\ = "\"C:\\Program Files (x86)\\Windows Mail\\wab.exe\" /vcard %1"	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\DefaultIcon\ = "\"C:\\Program Files (x86)\\Windows Mail\\wab.exe\",1"	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\text/x-vcard	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\text/x-vcard\Extension = ".vcf"	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe"
1⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
PID:2556

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

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/2556-0-0x0000000001000000-0x0000000001084000-memory.dmp

Filesize
528KB

Download
memory/2556-1-0x0000000001003000-0x0000000001004000-memory.dmp

Filesize
4KB

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memory/2556-2-0x0000000001000000-0x0000000001084000-memory.dmp

Filesize
528KB

Download