expiro | 540421cd7a5ee36ae48495465a8e4b3a59f6b99b2bdf79a62affd4b09755bdfe

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
01-01-2025 17:02

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General

Target

JaffaCakes118_5d3aa96ac3f903590db367dd7cfb0edf.exe
Size

457KB
MD5

5d3aa96ac3f903590db367dd7cfb0edf
SHA1

ad2566e08e35eb033ff894b09f78f2bdcbdc0389
SHA256

540421cd7a5ee36ae48495465a8e4b3a59f6b99b2bdf79a62affd4b09755bdfe
SHA512

1a5062f160962df30bc1275e7c14d6cc3a83612f2fc4932d26dd98c82fec2804cd08691e5cbc1601db87275703bc8f4d90f0a010c3f6f1e5407eaa7141d385eb
SSDEEP

6144:YZuEOK99kXiT5Smyg1gQEuAD/3wxH0aVnFUVP5MHhj67Yx2D2iNIdLSarxUGQYNF:YAEmDrCm2HeSiqLSarxtyZl

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/2700-0-0x0000000010074000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/2700-1-0x0000000010000000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/2700-2-0x0000000010074000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/2700-3-0x0000000010000000-0x0000000010108000-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_5d3aa96ac3f903590db367dd7cfb0edf.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5d3aa96ac3f903590db367dd7cfb0edf.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5d3aa96ac3f903590db367dd7cfb0edf.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2700

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/2700-0-0x0000000010074000-0x0000000010108000-memory.dmp

Filesize
592KB

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memory/2700-1-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

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memory/2700-2-0x0000000010074000-0x0000000010108000-memory.dmp

Filesize
592KB

Download
memory/2700-3-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

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