expiro | b786f439162c18f6efcbddc428bfcf681241fd3310ce51dc9e2dddd9fdcf41d1

Analysis

max time kernel
93s
max time network
99s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-12-2024 19:06

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General

Target

b786f439162c18f6efcbddc428bfcf681241fd3310ce51dc9e2dddd9fdcf41d1N.exe
Size

635KB
MD5

1cb552af189bc084cedbcc01a7358100
SHA1

3d9faeb13cffe132e6e426fef7a5e88d53431898
SHA256

b786f439162c18f6efcbddc428bfcf681241fd3310ce51dc9e2dddd9fdcf41d1
SHA512

1f58e7d85cdba1294612c69b54e1ea571435fbde329697d1887820e3b878b31793db7c7fd917ce523a0e96ee1b942464e95b4a31cb176ca1c7d567142eb5a8ff
SSDEEP

12288:gQRXH29Zn+hBzHF/vWHlnTtqSCHzBFKM40YBG9RiO:gQR3SZncBzl/viT3CzBFd009n

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 1 IoCs

backdoor

resource	yara_rule
behavioral2/memory/452-2-0x0000000030000000-0x00000000301CD000-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	b786f439162c18f6efcbddc428bfcf681241fd3310ce51dc9e2dddd9fdcf41d1N.exe

C:\Users\Admin\AppData\Local\Temp\b786f439162c18f6efcbddc428bfcf681241fd3310ce51dc9e2dddd9fdcf41d1N.exe
"C:\Users\Admin\AppData\Local\Temp\b786f439162c18f6efcbddc428bfcf681241fd3310ce51dc9e2dddd9fdcf41d1N.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:452

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/452-0-0x0000000030000000-0x00000000301CD000-memory.dmp

Filesize
1.8MB

Download
memory/452-1-0x0000000030014000-0x0000000030015000-memory.dmp

Filesize
4KB

Download
memory/452-2-0x0000000030000000-0x00000000301CD000-memory.dmp

Filesize
1.8MB

Download