expiro | f5192fd901af91d42629a250a7f41d2a4573f1a905774ca8941d78e64d73d2a9

Analysis

max time kernel
120s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03/01/2025, 11:00

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General

Target

JaffaCakes118_6c2732f9a03893d94281166c1c1474c0.exe
Size

542KB
MD5

6c2732f9a03893d94281166c1c1474c0
SHA1

b9fe05bd545c13e2d444c635c2325cdae42ffcff
SHA256

f5192fd901af91d42629a250a7f41d2a4573f1a905774ca8941d78e64d73d2a9
SHA512

d39e98eedae28528740429539ce5dbc95bf1501facb3095dbda764be0f380a4263db8a91506b8cec7b6b11c5c5e42ee0373b15232343ed416e1a8bd3e9a9cd6d
SSDEEP

12288:mgrJ9Yo1DNIZmzIbwUBhqXab56rSebWwDhkuJ:fRimzIbwuhqXMWvbrhZ

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/2304-0-0x000000000048E000-0x00000000004B5000-memory.dmp	family_expiro1
behavioral1/memory/2304-1-0x0000000000400000-0x00000000004B5000-memory.dmp	family_expiro1
behavioral1/memory/2304-4-0x0000000000400000-0x00000000004B5000-memory.dmp	family_expiro1
behavioral1/memory/2304-3-0x000000000048E000-0x00000000004B5000-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_6c2732f9a03893d94281166c1c1474c0.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2304	JaffaCakes118_6c2732f9a03893d94281166c1c1474c0.exe
2304	JaffaCakes118_6c2732f9a03893d94281166c1c1474c0.exe
2304	JaffaCakes118_6c2732f9a03893d94281166c1c1474c0.exe
2304	JaffaCakes118_6c2732f9a03893d94281166c1c1474c0.exe
2304	JaffaCakes118_6c2732f9a03893d94281166c1c1474c0.exe
2304	JaffaCakes118_6c2732f9a03893d94281166c1c1474c0.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c2732f9a03893d94281166c1c1474c0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c2732f9a03893d94281166c1c1474c0.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2304

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/2304-0-0x000000000048E000-0x00000000004B5000-memory.dmp

Filesize
156KB

Download
memory/2304-1-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2304-4-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2304-3-0x000000000048E000-0x00000000004B5000-memory.dmp

Filesize
156KB

Download