expiro | fac186c240d49b483e6514184ddeb93365c0478e96b8b267beab74b16ba92259

Analysis

max time kernel
148s
max time network
151s
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, 03:35

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General

Target

c5b41619d777060416607a429a63cda3_JaffaCakes118.exe
Size

738KB
MD5

c5b41619d777060416607a429a63cda3
SHA1

3d626b26ec5d0ffea26e9bf97c69dff0730b364c
SHA256

fac186c240d49b483e6514184ddeb93365c0478e96b8b267beab74b16ba92259
SHA512

fe3d34f5cc2e244fb7fc258d095ec98533779ae7c56152be2573da3680d20b44e7c6b6006aefdeb4d6138d93c868c935324d8e4345e037f1f9f9bb988b8f74bc
SSDEEP

12288:uAwSfxL/2Dc3jDLLmt0LDQewsHjhWW1d9cwO0qIlp7+x9xhIS2:TGewsHjoW1d9ckNa98

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/4072-0-0x00000000009EF000-0x0000000000A82000-memory.dmp	family_expiro1
behavioral2/memory/4072-1-0x0000000000930000-0x0000000000A82000-memory.dmp	family_expiro1
behavioral2/memory/4072-3-0x0000000000930000-0x0000000000A82000-memory.dmp	family_expiro1
behavioral2/memory/4072-2-0x00000000009EF000-0x0000000000A82000-memory.dmp	family_expiro1

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4480	4072	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	c5b41619d777060416607a429a63cda3_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\c5b41619d777060416607a429a63cda3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c5b41619d777060416607a429a63cda3_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:4072
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4072 -s 336
  2⤵
  - Program crash
  PID:4480

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4072 -ip 4072
1⤵
PID:4164

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/4072-0-0x00000000009EF000-0x0000000000A82000-memory.dmp

Filesize
588KB

Download
memory/4072-1-0x0000000000930000-0x0000000000A82000-memory.dmp

Filesize
1.3MB

Download
memory/4072-3-0x0000000000930000-0x0000000000A82000-memory.dmp

Filesize
1.3MB

Download
memory/4072-2-0x00000000009EF000-0x0000000000A82000-memory.dmp

Filesize
588KB

Download