Malware Analysis Report

2025-08-11 00:04

Sample ID 240525-2chszsdc38
Target 73724d3a89e86bd39f6085b09651156d_JaffaCakes118
SHA256 41088ef88942366234d3df66d21a16c337922e10f5e5b6103a77d8a0609d86d6
Tags
evasion
score
9/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
9/10

SHA256

41088ef88942366234d3df66d21a16c337922e10f5e5b6103a77d8a0609d86d6

Threat Level: Likely malicious

The file 73724d3a89e86bd39f6085b09651156d_JaffaCakes118 was found to be: Likely malicious.

Malicious Activity Summary

evasion

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

Checks BIOS information in registry

Identifies Wine through registry keys

Suspicious use of NtSetInformationThreadHideFromDebugger

Unsigned PE

Program crash

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-25 22:26

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-25 22:26

Reported

2024-05-25 22:28

Platform

win10v2004-20240508-en

Max time kernel

129s

Max time network

98s

Command Line

"C:\Users\Admin\AppData\Local\Temp\73724d3a89e86bd39f6085b09651156d_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\73724d3a89e86bd39f6085b09651156d_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\73724d3a89e86bd39f6085b09651156d_JaffaCakes118.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\73724d3a89e86bd39f6085b09651156d_JaffaCakes118.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\73724d3a89e86bd39f6085b09651156d_JaffaCakes118.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\73724d3a89e86bd39f6085b09651156d_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\73724d3a89e86bd39f6085b09651156d_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\73724d3a89e86bd39f6085b09651156d_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1712 -ip 1712

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1712 -s 1432

Network

Country Destination Domain Proto
US 8.8.8.8:53 onemilionbrazilian.com udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 145.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 45.19.74.20.in-addr.arpa udp

Files

memory/1712-0-0x00000000007F0000-0x0000000000B38000-memory.dmp

memory/1712-1-0x0000000077434000-0x0000000077436000-memory.dmp

memory/1712-2-0x00000000007F1000-0x00000000007FC000-memory.dmp

memory/1712-3-0x00000000007F0000-0x0000000000B38000-memory.dmp

memory/1712-4-0x00000000007F0000-0x0000000000B38000-memory.dmp

memory/1712-5-0x00000000007F0000-0x0000000000B38000-memory.dmp

memory/1712-6-0x00000000007F0000-0x0000000000B38000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-25 22:26

Reported

2024-05-25 22:28

Platform

win7-20240419-en

Max time kernel

141s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\73724d3a89e86bd39f6085b09651156d_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\73724d3a89e86bd39f6085b09651156d_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\73724d3a89e86bd39f6085b09651156d_JaffaCakes118.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\73724d3a89e86bd39f6085b09651156d_JaffaCakes118.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\73724d3a89e86bd39f6085b09651156d_JaffaCakes118.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\73724d3a89e86bd39f6085b09651156d_JaffaCakes118.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\73724d3a89e86bd39f6085b09651156d_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\73724d3a89e86bd39f6085b09651156d_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\73724d3a89e86bd39f6085b09651156d_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2248 -s 940

Network

Country Destination Domain Proto
US 8.8.8.8:53 onemilionbrazilian.com udp

Files

memory/2248-0-0x00000000007F0000-0x0000000000B38000-memory.dmp

memory/2248-1-0x0000000077930000-0x0000000077932000-memory.dmp

memory/2248-2-0x00000000007F1000-0x00000000007FC000-memory.dmp

memory/2248-3-0x00000000007F0000-0x0000000000B38000-memory.dmp

memory/2248-4-0x00000000007F0000-0x0000000000B38000-memory.dmp