expiro | dc76ae19bce12384ea967df5a37fb4289bae3a3fb7267036fcedca9938bd157e

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10-01-2025 05:06

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General

Target

JaffaCakes118_dbac576015f705c1b45efb39261cc0f6.exe
Size

415KB
MD5

dbac576015f705c1b45efb39261cc0f6
SHA1

a12956af53f3226a05ec02cd9d949db90bbf8e85
SHA256

dc76ae19bce12384ea967df5a37fb4289bae3a3fb7267036fcedca9938bd157e
SHA512

e2b7f52e99e2d489fa1fce872568ccb06bf89f31855ed4f2ee2091861400bfbf36f4741c3874145a06075dd1bb3a4032fe90c418802ab030af823b33b9458214
SSDEEP

6144:t+xZ1TBULRpV0C7+mStAbZvkSZZUk6XS4Xp9dqv786qH2h3ghmJju72d11ZVwTgh:otB8RpV0Cam5vkYACa9dMOJSjld1SA

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/1848-0-0x00000000008DB000-0x000000000096E000-memory.dmp	family_expiro1
behavioral2/memory/1848-1-0x0000000000870000-0x000000000096E000-memory.dmp	family_expiro1
behavioral2/memory/1848-2-0x00000000008DB000-0x000000000096E000-memory.dmp	family_expiro1
behavioral2/memory/1848-3-0x0000000000870000-0x000000000096E000-memory.dmp	family_expiro1

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3688	1848	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	JaffaCakes118_dbac576015f705c1b45efb39261cc0f6.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dbac576015f705c1b45efb39261cc0f6.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dbac576015f705c1b45efb39261cc0f6.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:1848
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1848 -s 260
  2⤵
  - Program crash
  PID:3688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 1848 -ip 1848
1⤵
PID:3636

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/1848-0-0x00000000008DB000-0x000000000096E000-memory.dmp

Filesize
588KB

Download
memory/1848-1-0x0000000000870000-0x000000000096E000-memory.dmp

Filesize
1016KB

Download
memory/1848-2-0x00000000008DB000-0x000000000096E000-memory.dmp

Filesize
588KB

Download
memory/1848-3-0x0000000000870000-0x000000000096E000-memory.dmp

Filesize
1016KB

Download