expiro | de1981ad190f45f83b04e1eccb99d3d0c6533e6b0f490951695b8fab115bd389

Analysis

max time kernel
92s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
05/12/2024, 22:25

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General

Target

c9a77097b6a003e20a0abfba839df1fb_JaffaCakes118.exe
Size

417KB
MD5

c9a77097b6a003e20a0abfba839df1fb
SHA1

af2b2f3395377f6ab22aaa6c22579391ec1ca3a5
SHA256

de1981ad190f45f83b04e1eccb99d3d0c6533e6b0f490951695b8fab115bd389
SHA512

ca5bd94b774eba82121030dd5ac47befdea9a5415dd416c5c9928866ff9417cc9dc6b499cc6ffddd16cd524988429e256080000c5e3c6029c61a71308a9a0521
SSDEEP

6144:KSpwTEOzPSK5U2SoJ8VWackuV1ZmXRWLgKocUq8nOfaIROo71YvK09lw+45B:d+IK5U2Soys1mwLQcUqgsPBYv745B

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/2872-0-0x0000000000A3C000-0x0000000000ACF000-memory.dmp	family_expiro1
behavioral2/memory/2872-1-0x00000000009D0000-0x0000000000ACF000-memory.dmp	family_expiro1
behavioral2/memory/2872-2-0x0000000000A3C000-0x0000000000ACF000-memory.dmp	family_expiro1
behavioral2/memory/2872-3-0x00000000009D0000-0x0000000000ACF000-memory.dmp	family_expiro1

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1028	2872	WerFault.exe	82

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	c9a77097b6a003e20a0abfba839df1fb_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\c9a77097b6a003e20a0abfba839df1fb_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c9a77097b6a003e20a0abfba839df1fb_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2872
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2872 -s 256
  2⤵
  - Program crash
  PID:1028

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2872 -ip 2872
1⤵
PID:1652

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

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Downloads

memory/2872-0-0x0000000000A3C000-0x0000000000ACF000-memory.dmp

Filesize
588KB

Download
memory/2872-1-0x00000000009D0000-0x0000000000ACF000-memory.dmp

Filesize
1020KB

Download
memory/2872-2-0x0000000000A3C000-0x0000000000ACF000-memory.dmp

Filesize
588KB

Download
memory/2872-3-0x00000000009D0000-0x0000000000ACF000-memory.dmp

Filesize
1020KB

Download