expiro | 7a7a461eb2717b429008f8c75abb075de4355ef677dbe4bdef5830653d30c5b5

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
02/01/2025, 01:23

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General

Target

7a7a461eb2717b429008f8c75abb075de4355ef677dbe4bdef5830653d30c5b5.exe
Size

1.8MB
MD5

7096a99b6ebadcd73318516cb8af9ba0
SHA1

3d7118366b4556f987ecb836a954951db2a3439d
SHA256

7a7a461eb2717b429008f8c75abb075de4355ef677dbe4bdef5830653d30c5b5
SHA512

27b366ac2f22eb4021bf96b2fb7e46f948f3aa3fab94f5a559ca5d3765b75c2720087f230c11ae9089b1a7588016fe1ab42266077a5702428f8ef0260fd12dcc
SSDEEP

24576:GbJDcYm+kU3QAOTUlbM9+kU3QAOTUlbMU:IDufA2WbM9fA2WbMU

Score

10^/10

expiro backdoor discovery upx

Malware Config

Signatures

Expiro family
expiro
Expiro, m0yv
Expiro aka m0yv is a multi-functional backdoor written in C++.
backdoor expiro

Expiro payload 1 IoCs

backdoor

resource	yara_rule
behavioral1/memory/2384-2-0x0000000001000000-0x00000000012B0000-memory.dmp	family_expiro1

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2384-0-0x0000000001000000-0x00000000012B0000-memory.dmp	upx
behavioral1/memory/2384-2-0x0000000001000000-0x00000000012B0000-memory.dmp	upx

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	7a7a461eb2717b429008f8c75abb075de4355ef677dbe4bdef5830653d30c5b5.exe

C:\Users\Admin\AppData\Local\Temp\7a7a461eb2717b429008f8c75abb075de4355ef677dbe4bdef5830653d30c5b5.exe
"C:\Users\Admin\AppData\Local\Temp\7a7a461eb2717b429008f8c75abb075de4355ef677dbe4bdef5830653d30c5b5.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2384

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/2384-0-0x0000000001000000-0x00000000012B0000-memory.dmp

Filesize
2.7MB

Download
memory/2384-1-0x000000000100A000-0x000000000100B000-memory.dmp

Filesize
4KB

Download
memory/2384-2-0x0000000001000000-0x00000000012B0000-memory.dmp

Filesize
2.7MB

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