expiro | d39241c692b5f612e9ccb11119fa3cdd3e4076170bac9ed929925116edfc135f

Analysis

max time kernel
93s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09/09/2024, 05:00

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General

Target

d5b0d98e788fdede4ad2472a18b4d508_JaffaCakes118.exe
Size

7.3MB
MD5

d5b0d98e788fdede4ad2472a18b4d508
SHA1

4644d73f4509794996078c6652b9bd3f1e0667f4
SHA256

d39241c692b5f612e9ccb11119fa3cdd3e4076170bac9ed929925116edfc135f
SHA512

97db6e0b1ab033db205570f07e0a3fdec3bd8099d6531a042dba4926d9037b58ef750d84a66476d07f2ff02227e51b1b596efab2af71586976c19e6770457ed3
SSDEEP

98304:pxC3ud6MOIvysiwCQKzo5qphIHVruP3WpF3UdE1hZHEdLFwmil+:uGQFMkhgJuP32+dmhZk/m

Score

10^/10

expiro backdoor discovery

Malware Config

Signatures

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/4608-0-0x000000000152E000-0x00000000015C1000-memory.dmp	family_expiro1
behavioral2/memory/4608-1-0x0000000000DE0000-0x00000000015C1000-memory.dmp	family_expiro1
behavioral2/memory/4608-2-0x000000000152E000-0x00000000015C1000-memory.dmp	family_expiro1
behavioral2/memory/4608-3-0x0000000000DE0000-0x00000000015C1000-memory.dmp	family_expiro1

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1200	4608	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	d5b0d98e788fdede4ad2472a18b4d508_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\d5b0d98e788fdede4ad2472a18b4d508_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d5b0d98e788fdede4ad2472a18b4d508_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:4608
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4608 -s 424
  2⤵
  - Program crash
  PID:1200

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4608 -ip 4608
1⤵
PID:3508

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/4608-0-0x000000000152E000-0x00000000015C1000-memory.dmp

Filesize
588KB

Download
memory/4608-1-0x0000000000DE0000-0x00000000015C1000-memory.dmp

Filesize
7.9MB

Download
memory/4608-2-0x000000000152E000-0x00000000015C1000-memory.dmp

Filesize
588KB

Download
memory/4608-3-0x0000000000DE0000-0x00000000015C1000-memory.dmp

Filesize
7.9MB

Download