expiro | 85442e19d37b450dfce14bfeb91d5dd24a95a166b3fafe6c0caccc624fb37d74

Analysis

max time kernel
121s
max time network
123s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
11-01-2025 05:55

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General

Target

JaffaCakes118_f8ceda7ddc4e54094f02763fd156a6c5.exe
Size

457KB
MD5

f8ceda7ddc4e54094f02763fd156a6c5
SHA1

ceafa013aa37a64a80faec190b87f7f395b592a3
SHA256

85442e19d37b450dfce14bfeb91d5dd24a95a166b3fafe6c0caccc624fb37d74
SHA512

e5aa18952dc87fb2733f15f03a219eea22d26c827b4a5e34df13234dd9a0b2e82ba58cf26e3dbc5c07c9c216dd0baec0c8eadb152601d9d14a158c21f64d940b
SSDEEP

6144:VZiEOK99kXQIsgpHezxMVwgdVzoi4t+OrmS38qpsocSJwL3CQvws0Rvgu7qlL8+F:V8ppHe9gJoiAR0o5weQYsUT7EzOl

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/2916-0-0x0000000010074000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/2916-1-0x0000000010000000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/2916-2-0x0000000010074000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/2916-3-0x0000000010000000-0x0000000010108000-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_f8ceda7ddc4e54094f02763fd156a6c5.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f8ceda7ddc4e54094f02763fd156a6c5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f8ceda7ddc4e54094f02763fd156a6c5.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2916

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/2916-0-0x0000000010074000-0x0000000010108000-memory.dmp

Filesize
592KB

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memory/2916-1-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

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memory/2916-2-0x0000000010074000-0x0000000010108000-memory.dmp

Filesize
592KB

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memory/2916-3-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

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