Malware Analysis Report

2025-04-13 23:46

Sample ID 250103-ttnfsssmgx
Target JaffaCakes118_6de4d2fd080960344ac8fac697c85556
SHA256 abf442d8112f2a624cdbaa8a90ba2f91f9776abbc6ee0d952de33e79e5548e9a
Tags
expiro backdoor discovery
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

abf442d8112f2a624cdbaa8a90ba2f91f9776abbc6ee0d952de33e79e5548e9a

Threat Level: Known bad

The file JaffaCakes118_6de4d2fd080960344ac8fac697c85556 was found to be: Known bad.

Malicious Activity Summary

expiro backdoor discovery

Expiro, m0yv

Expiro family

Expiro payload

Checks installed software on the system

Enumerates connected drives

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-01-03 16:21

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-03 16:21

Reported

2025-01-03 16:23

Platform

win7-20240903-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe"

Signatures

Expiro family

expiro

Expiro, m0yv

backdoor expiro

Expiro payload

backdoor
Description Indicator Process Target
N/A N/A N/A N/A

Checks installed software on the system

discovery

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe"

Network

N/A

Files

memory/1668-0-0x0000000000400000-0x0000000000685000-memory.dmp

memory/1668-1-0x0000000000480000-0x0000000000481000-memory.dmp

memory/1668-4-0x00000000011E0000-0x00000000011E8000-memory.dmp

memory/1668-3-0x00000000011E0000-0x00000000011E8000-memory.dmp

memory/1668-2-0x00000000011E0000-0x00000000011E8000-memory.dmp

memory/1668-5-0x0000000000400000-0x0000000000685000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-03 16:21

Reported

2025-01-03 16:23

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe"

Signatures

Expiro family

expiro

Expiro, m0yv

backdoor expiro

Expiro payload

backdoor
Description Indicator Process Target
N/A N/A N/A N/A

Checks installed software on the system

discovery

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 166.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 91.16.208.104.in-addr.arpa udp

Files

memory/3676-0-0x0000000000400000-0x0000000000685000-memory.dmp

memory/3676-1-0x0000000000480000-0x0000000000481000-memory.dmp

memory/3676-2-0x0000000000400000-0x0000000000685000-memory.dmp