expiro | fa3ac3e12fb58a8d22bbceda4fe89ad83c561f1cdb607d6950ecbccf2b8f9396

Analysis

max time kernel
94s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
19-02-2025 04:12

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General

Target

JaffaCakes118_035d7db89f69b0d3cb2d93bafc334210.exe
Size

219KB
MD5

035d7db89f69b0d3cb2d93bafc334210
SHA1

dd7e1910f97da1b9ddc1a3fdb027d5d44b4b2a52
SHA256

fa3ac3e12fb58a8d22bbceda4fe89ad83c561f1cdb607d6950ecbccf2b8f9396
SHA512

610300ca90ce5a7416540d153e749051971d65faee6794eb1f60d39b2fe284083723b190ec5dfe38693ea234651f8dbb2206b70529858704c4796a1b236cdfc4
SSDEEP

6144:32+/ny/HPzP+lzNe4V0Vv3GEC/vtcJEKxJS:3pnGHraQ4kq8BxJ

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/2280-1-0x0000000030000000-0x0000000030168000-memory.dmp	family_expiro1

Program crash 1 IoCs

pid	pid_target	Process	procid_target
516	2280	WerFault.exe	85

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_035d7db89f69b0d3cb2d93bafc334210.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_035d7db89f69b0d3cb2d93bafc334210.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_035d7db89f69b0d3cb2d93bafc334210.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2280
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2280 -s 440
  2⤵
  - Program crash
  PID:516

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2280 -ip 2280
1⤵
PID:4540

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/2280-0-0x0000000030000000-0x0000000030168000-memory.dmp

Filesize
1.4MB

Download
memory/2280-1-0x0000000030000000-0x0000000030168000-memory.dmp

Filesize
1.4MB

Download