Malware Analysis Report

2025-08-05 23:04

Sample ID 240412-drr37sgf5v
Target eeff79e377ccf03b15a01543ed665f4f_JaffaCakes118
SHA256 977763d2819ee3fdd238d383eebd7f10d69e32cd91b1fda9dfbe4e13c358bb5f
Tags
upx themida evasion trojan
score
9/10

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
9/10

SHA256

977763d2819ee3fdd238d383eebd7f10d69e32cd91b1fda9dfbe4e13c358bb5f

Threat Level: Likely malicious

The file eeff79e377ccf03b15a01543ed665f4f_JaffaCakes118 was found to be: Likely malicious.

Malicious Activity Summary

upx themida evasion trojan

Identifies VirtualBox via ACPI registry values (likely anti-VM)

Themida packer

UPX packed file

Checks BIOS information in registry

Checks whether UAC is enabled

Unsigned PE

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-12 03:14

Signatures

Themida packer

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

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-12 03:14

Reported

2024-04-12 03:17

Platform

win7-20240221-en

Max time kernel

142s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\eeff79e377ccf03b15a01543ed665f4f_JaffaCakes118.exe"

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\eeff79e377ccf03b15a01543ed665f4f_JaffaCakes118.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\eeff79e377ccf03b15a01543ed665f4f_JaffaCakes118.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\eeff79e377ccf03b15a01543ed665f4f_JaffaCakes118.exe N/A

UPX packed file

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

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\eeff79e377ccf03b15a01543ed665f4f_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\eeff79e377ccf03b15a01543ed665f4f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\eeff79e377ccf03b15a01543ed665f4f_JaffaCakes118.exe"

Network

N/A

Files

memory/2304-0-0x0000000000400000-0x0000000000C2F000-memory.dmp

memory/2304-1-0x0000000000400000-0x0000000000C2F000-memory.dmp

memory/2304-2-0x0000000000400000-0x0000000000C2F000-memory.dmp

memory/2304-5-0x0000000000400000-0x0000000000C2F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-12 03:14

Reported

2024-04-12 03:18

Platform

win10v2004-20240226-en

Max time kernel

190s

Max time network

206s

Command Line

"C:\Users\Admin\AppData\Local\Temp\eeff79e377ccf03b15a01543ed665f4f_JaffaCakes118.exe"

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\eeff79e377ccf03b15a01543ed665f4f_JaffaCakes118.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\eeff79e377ccf03b15a01543ed665f4f_JaffaCakes118.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\eeff79e377ccf03b15a01543ed665f4f_JaffaCakes118.exe N/A

UPX packed file

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

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\eeff79e377ccf03b15a01543ed665f4f_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\eeff79e377ccf03b15a01543ed665f4f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\eeff79e377ccf03b15a01543ed665f4f_JaffaCakes118.exe"

Network

Country Destination Domain Proto
NL 52.142.223.178:80 tcp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 24.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 209.143.182.52.in-addr.arpa udp

Files

memory/2212-0-0x0000000000400000-0x0000000000C2F000-memory.dmp

memory/2212-1-0x0000000000400000-0x0000000000C2F000-memory.dmp

memory/2212-2-0x0000000000400000-0x0000000000C2F000-memory.dmp