expiro | 955f73242344d65a6bc127b958f2831a41d594abfe7ad0547d8b5ce4a9fc9ffe

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
31/12/2024, 10:07

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General

Target

JaffaCakes118_139229ffc286044dbf5bc7b175c77d41.exe
Size

457KB
MD5

139229ffc286044dbf5bc7b175c77d41
SHA1

f1fc4d0f0dae695462e42c245b87b5107219938d
SHA256

955f73242344d65a6bc127b958f2831a41d594abfe7ad0547d8b5ce4a9fc9ffe
SHA512

1a9fed5e983a41188fbba2ea80623b6dafc7dfd4bb6e3aa643db181de09d8980667e12f81b90c4fd96c795363e60c1a0cb3025a7015730a98d2ac39dbcbbbcf7
SSDEEP

6144:mZjEOK99kXRk0z6J2lt9IJ8AeZOtLML5tZUwdsR89Tay0Z3ZhsvmZVaA+C6Nx:mhW0z6sbG8mONTm8GPZ3v3erN

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/2636-0-0x0000000010074000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/2636-1-0x0000000010000000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/2636-2-0x0000000010074000-0x0000000010108000-memory.dmp	family_expiro1
behavioral1/memory/2636-3-0x0000000010000000-0x0000000010108000-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_139229ffc286044dbf5bc7b175c77d41.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_139229ffc286044dbf5bc7b175c77d41.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_139229ffc286044dbf5bc7b175c77d41.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2636

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/2636-0-0x0000000010074000-0x0000000010108000-memory.dmp

Filesize
592KB

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memory/2636-1-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

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memory/2636-2-0x0000000010074000-0x0000000010108000-memory.dmp

Filesize
592KB

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memory/2636-3-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

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