expiro | 0a499add88a3dab712320f60458dc76f1cae1f301b03f19df2e28ccb2e98816e

Analysis

max time kernel
92s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02/01/2025, 00:54

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General

Target

JaffaCakes118_61ad90b914ad6dbc912bb9d0dbe21740.exe
Size

220KB
MD5

61ad90b914ad6dbc912bb9d0dbe21740
SHA1

9d1d34f45cc85f4e124cddc0418d4d8710e38797
SHA256

0a499add88a3dab712320f60458dc76f1cae1f301b03f19df2e28ccb2e98816e
SHA512

2cbb0258920b20c0aad5823ed4335b87ff0ffb1b2847fac8fe0163448c3bf96fb161689966ca05e86dca0dd2f3cf35f454191fb632c3ba9d19624b46f7dd2232
SSDEEP

6144:hiKgrxmxq3f3xzYy1bo7Mq42r6O7P/M4hpfiLu7lEWxEmXtpa2OLB9Y2O:kDxjvZl5kD/M4rfA5lrFq

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/1236-1-0x0000000001000000-0x0000000001086000-memory.dmp	family_expiro1

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4360	1236	WerFault.exe	81

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_61ad90b914ad6dbc912bb9d0dbe21740.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61ad90b914ad6dbc912bb9d0dbe21740.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61ad90b914ad6dbc912bb9d0dbe21740.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:1236
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1236 -s 288
  2⤵
  - Program crash
  PID:4360

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 1236 -ip 1236
1⤵
PID:5016

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/1236-0-0x0000000001000000-0x0000000001086000-memory.dmp

Filesize
536KB

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memory/1236-1-0x0000000001000000-0x0000000001086000-memory.dmp

Filesize
536KB

Download