expiro | 7736e2923f0969b84166b05537aed354ad3f8a3e571af505daa9003838354d7b

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09-01-2025 10:18

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General

Target

JaffaCakes118_c5b67871b12b397585cad3482b8b1d14.exe
Size

1.2MB
MD5

c5b67871b12b397585cad3482b8b1d14
SHA1

8e1ef341018d9f1581a592514427a051f850fc30
SHA256

7736e2923f0969b84166b05537aed354ad3f8a3e571af505daa9003838354d7b
SHA512

5f286133e974954ea1014ad6365424847a61f5da2f83771ce713daac6b72ea669cf1b3aa3ab9775928694d07a3e4561d916fa2be5edb439160a607c268902d18
SSDEEP

24576:cNQ+9+MzVdi/JZgQzYM65mpXNgbUDGTgl1Y9IrQig38jNayXJUtt:I9HhQBuM65mp9DG0l1Y9IrQBMjXJ

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/1668-0-0x000000000053A000-0x00000000005CE000-memory.dmp	family_expiro1
behavioral1/memory/1668-1-0x0000000000400000-0x00000000005CE000-memory.dmp	family_expiro1
behavioral1/memory/1668-3-0x0000000000400000-0x00000000005CE000-memory.dmp	family_expiro1
behavioral1/memory/1668-2-0x000000000053A000-0x00000000005CE000-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_c5b67871b12b397585cad3482b8b1d14.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c5b67871b12b397585cad3482b8b1d14.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c5b67871b12b397585cad3482b8b1d14.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:1668

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/1668-0-0x000000000053A000-0x00000000005CE000-memory.dmp

Filesize
592KB

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memory/1668-1-0x0000000000400000-0x00000000005CE000-memory.dmp

Filesize
1.8MB

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memory/1668-3-0x0000000000400000-0x00000000005CE000-memory.dmp

Filesize
1.8MB

Download
memory/1668-2-0x000000000053A000-0x00000000005CE000-memory.dmp

Filesize
592KB

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