expiro | c12ef45ad9611e6cf9762065777fc6bdf7a1ef406f2de4763e63796c47871caf

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
09-01-2025 07:25

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General

Target

JaffaCakes118_c23e3970f33d1009f9bcd387b6632391.exe
Size

456KB
MD5

c23e3970f33d1009f9bcd387b6632391
SHA1

a54f2988d410afc0544e86b508048d797b9e9136
SHA256

c12ef45ad9611e6cf9762065777fc6bdf7a1ef406f2de4763e63796c47871caf
SHA512

7e487bab99f36a3c6e78c912bcc4ac79dcf0f67302fa5ec2de71cc34ec175de6fef68b743cf01bfd442f9def59673fc7d5f365ea9001e35a7f38776bab18bed1
SSDEEP

12288:OhzOCTtN8miF2RWkFhWsdO3E+2MNF3TKJ1DE+Vx2NMPQ5I:aRTtN8miIRWk+sdOpNF3TYICC

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/2496-0-0x0000000000474000-0x0000000000507000-memory.dmp	family_expiro1
behavioral1/memory/2496-1-0x0000000000400000-0x0000000000507000-memory.dmp	family_expiro1
behavioral1/memory/2496-2-0x0000000000474000-0x0000000000507000-memory.dmp	family_expiro1
behavioral1/memory/2496-3-0x0000000000400000-0x0000000000507000-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_c23e3970f33d1009f9bcd387b6632391.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c23e3970f33d1009f9bcd387b6632391.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c23e3970f33d1009f9bcd387b6632391.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2496

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/2496-0-0x0000000000474000-0x0000000000507000-memory.dmp

Filesize
588KB

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memory/2496-1-0x0000000000400000-0x0000000000507000-memory.dmp

Filesize
1.0MB

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memory/2496-2-0x0000000000474000-0x0000000000507000-memory.dmp

Filesize
588KB

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memory/2496-3-0x0000000000400000-0x0000000000507000-memory.dmp

Filesize
1.0MB

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