expiro | a68e93bba8097cb95f7139ba26d9e9250f7e7cae93ec7527ea484cad87a0ffad

Analysis

max time kernel
104s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20250207-en
resource tags

arch:x64arch:x86image:win10v2004-20250207-enlocale:en-usos:windows10-2004-x64system
submitted
08-02-2025 15:49

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General

Target

a68e93bba8097cb95f7139ba26d9e9250f7e7cae93ec7527ea484cad87a0ffad.exe
Size

1.9MB
MD5

edb836a9e67e323fe3581101f68e009e
SHA1

f7e7daa690efdd57ab9b5730273af125fb430337
SHA256

a68e93bba8097cb95f7139ba26d9e9250f7e7cae93ec7527ea484cad87a0ffad
SHA512

879817910957de023365a6d674980e48823cdbe2bdea24b5b8ddcc367b47368791517fc0942fd25dd7477895d3fcd75feb1f4851704d5397b81b6ddf5014cc02
SSDEEP

49152:v0ZWI+llRK7lC1oClOQZFcY161tVeNIcTr6wtRPGsuK5BY:cUVaYNsnVRERPl56

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
behavioral2/memory/656-0-0x00000000002E8000-0x000000000037C000-memory.dmp	family_expiro1
behavioral2/memory/656-1-0x0000000000100000-0x000000000037C000-memory.dmp	family_expiro1
behavioral2/memory/656-2-0x00000000002E8000-0x000000000037C000-memory.dmp	family_expiro1
behavioral2/memory/656-3-0x0000000000100000-0x000000000037C000-memory.dmp	family_expiro1

Downloads MZ/PE file 1 IoCs

flow	pid	Process
19	1208	Process not Found

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2008	656	WerFault.exe	85

System Location Discovery: System Language Discovery 1 TTPs 2 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	a68e93bba8097cb95f7139ba26d9e9250f7e7cae93ec7527ea484cad87a0ffad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1408	MicrosoftEdgeUpdate.exe

C:\Users\Admin\AppData\Local\Temp\a68e93bba8097cb95f7139ba26d9e9250f7e7cae93ec7527ea484cad87a0ffad.exe
"C:\Users\Admin\AppData\Local\Temp\a68e93bba8097cb95f7139ba26d9e9250f7e7cae93ec7527ea484cad87a0ffad.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:656
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 656 -s 564
  2⤵
  - Program crash
  PID:2008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 656 -ip 656
1⤵
PID:1112

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDcxNzgiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxOTY4MDM3MTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI0NzA5NzU2MTcyIi8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:1408

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

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/656-0-0x00000000002E8000-0x000000000037C000-memory.dmp

Filesize
592KB

Download
memory/656-1-0x0000000000100000-0x000000000037C000-memory.dmp

Filesize
2.5MB

Download
memory/656-2-0x00000000002E8000-0x000000000037C000-memory.dmp

Filesize
592KB

Download
memory/656-3-0x0000000000100000-0x000000000037C000-memory.dmp

Filesize
2.5MB

Download