expiro | eda3f18c9145125002fd98051cd2da7e4ccb21db905560c55c98758100fd3145

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
03-01-2025 18:26

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General

Target

JaffaCakes118_6e9c6bc31a8a22309ed4e8a98a943978.exe
Size

3.0MB
MD5

6e9c6bc31a8a22309ed4e8a98a943978
SHA1

ddcce6b114bbdb28ed142fdaa3596e3b2fdcda41
SHA256

eda3f18c9145125002fd98051cd2da7e4ccb21db905560c55c98758100fd3145
SHA512

f33bc6fbde3307ce8c12e52a0678c55f8a91e6b02cdc039523b3666fa231c22c0407b6ad46d02b77e59037eefa9ac276fff6ec0158f6f2177c90f714b6f2ab2d
SSDEEP

49152:O0iC/rk62xWNol+5gOsLddaMXSFHXwy0t96c2Y+1f0CfQWhbARSCe21d1vWK4xW:drZ23Abs5DCFHXwV+f1/QQARne21d1+w

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
behavioral1/memory/2644-2-0x0000000001000000-0x00000000011C6000-memory.dmp	family_expiro1

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1988	2644	WerFault.exe	29

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_6e9c6bc31a8a22309ed4e8a98a943978.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2644 wrote to memory of 1988	2644	JaffaCakes118_6e9c6bc31a8a22309ed4e8a98a943978.exe	30
PID 2644 wrote to memory of 1988	2644	JaffaCakes118_6e9c6bc31a8a22309ed4e8a98a943978.exe	30
PID 2644 wrote to memory of 1988	2644	JaffaCakes118_6e9c6bc31a8a22309ed4e8a98a943978.exe	30
PID 2644 wrote to memory of 1988	2644	JaffaCakes118_6e9c6bc31a8a22309ed4e8a98a943978.exe	30
PID 2644 wrote to memory of 1988	2644	JaffaCakes118_6e9c6bc31a8a22309ed4e8a98a943978.exe	30
PID 2644 wrote to memory of 1988	2644	JaffaCakes118_6e9c6bc31a8a22309ed4e8a98a943978.exe	30
PID 2644 wrote to memory of 1988	2644	JaffaCakes118_6e9c6bc31a8a22309ed4e8a98a943978.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e9c6bc31a8a22309ed4e8a98a943978.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e9c6bc31a8a22309ed4e8a98a943978.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2644
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2644 -s 268
  2⤵
  - Program crash
  PID:1988

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/2644-0-0x0000000001000000-0x00000000011C6000-memory.dmp

Filesize
1.8MB

Download
memory/2644-1-0x0000000000AF0000-0x0000000000CB6000-memory.dmp

Filesize
1.8MB

Download
memory/2644-2-0x0000000001000000-0x00000000011C6000-memory.dmp

Filesize
1.8MB

Download