Malware Analysis Report

2025-01-06 07:35

Sample ID 240613-f3g4gszamp
Target a3f8ca55a0ce42205794d653a66670f6_JaffaCakes118
SHA256 5982c5afb55664cdf9b51717e92b28bfc93b58c49ae4e0506aecf8d81c0e86dc
Tags
evasion
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

5982c5afb55664cdf9b51717e92b28bfc93b58c49ae4e0506aecf8d81c0e86dc

Threat Level: Likely malicious

The file a3f8ca55a0ce42205794d653a66670f6_JaffaCakes118 was found to be: Likely malicious.

Malicious Activity Summary

evasion

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

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Drops desktop.ini file(s)

Drops file in Windows directory

Program crash

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Enumerates system info in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-13 05:23

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-13 05:23

Reported

2024-06-13 05:26

Platform

win7-20240611-en

Max time kernel

120s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a3f8ca55a0ce42205794d653a66670f6_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\a3f8ca55a0ce42205794d653a66670f6_JaffaCakes118.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\n7861\s7861.exe N/A

Enumerates physical storage devices

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS C:\Users\Admin\AppData\Local\Temp\a3f8ca55a0ce42205794d653a66670f6_JaffaCakes118.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer C:\Users\Admin\AppData\Local\Temp\a3f8ca55a0ce42205794d653a66670f6_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\n7861\s7861.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\n7861\s7861.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\n7861\s7861.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a3f8ca55a0ce42205794d653a66670f6_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\a3f8ca55a0ce42205794d653a66670f6_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\n7861\s7861.exe

"C:\Users\Admin\AppData\Local\Temp\n7861\s7861.exe" ins.exe /e 13029947 /h ef64a6.api.socdn.com /u 8765b7a1-1326-11e4-8a58-80c16e6f498c /v "C:\Users\Admin\AppData\Local\Temp\a3f8ca55a0ce42205794d653a66670f6_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 ef64a6.api.socdn.com udp
US 13.248.148.254:80 ef64a6.api.socdn.com tcp

Files

\Users\Admin\AppData\Local\Temp\n7861\s7861.exe

MD5 7bfe6bbe12a10323b0aa5c1bad6ecd5b
SHA1 7ce4508ddfa0200a95cdbfbe66c4c6b5a8b87122
SHA256 f15a491ef671ebddcc3710a4817244c18fe1a5dd444c83137c2fbd601d1c7214
SHA512 bf0438520ade14a53c7d8a76b7f7e3d8eec9060003954e0da1ee17ed5db024c44a28bae23ebfaa006fd50da400faf9fc77a4dcb1071d0501d753b47a6146d5d7

memory/2592-17-0x000007FEF632E000-0x000007FEF632F000-memory.dmp

memory/2592-18-0x0000000000450000-0x000000000045E000-memory.dmp

memory/2592-19-0x000007FEF6070000-0x000007FEF6A0D000-memory.dmp

memory/2592-20-0x000007FEF6070000-0x000007FEF6A0D000-memory.dmp

memory/2592-21-0x000007FEF6070000-0x000007FEF6A0D000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 05:23

Reported

2024-06-13 05:26

Platform

win10v2004-20240611-en

Max time kernel

150s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a3f8ca55a0ce42205794d653a66670f6_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\a3f8ca55a0ce42205794d653a66670f6_JaffaCakes118.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2447855248-390457009-3660902674-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\a3f8ca55a0ce42205794d653a66670f6_JaffaCakes118.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\n7864\s7864.exe N/A

Drops desktop.ini file(s)

Description Indicator Process Target
File created C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\n7864\s7864.exe N/A
File opened for modification C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\n7864\s7864.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\n7864\s7864.exe N/A
File opened for modification C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\n7864\s7864.exe N/A
File opened for modification C:\Windows\assembly C:\Users\Admin\AppData\Local\Temp\n7864\s7864.exe N/A

Enumerates physical storage devices

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS C:\Users\Admin\AppData\Local\Temp\a3f8ca55a0ce42205794d653a66670f6_JaffaCakes118.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer C:\Users\Admin\AppData\Local\Temp\a3f8ca55a0ce42205794d653a66670f6_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\n7864\s7864.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\n7864\s7864.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\n7864\s7864.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a3f8ca55a0ce42205794d653a66670f6_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\a3f8ca55a0ce42205794d653a66670f6_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\n7864\s7864.exe

"C:\Users\Admin\AppData\Local\Temp\n7864\s7864.exe" ins.exe /e 13029947 /h ef64a6.api.socdn.com /u 8765b7a1-1326-11e4-8a58-80c16e6f498c /v "C:\Users\Admin\AppData\Local\Temp\a3f8ca55a0ce42205794d653a66670f6_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1748 -ip 1748

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1748 -s 3860

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
NL 23.62.61.75:443 www.bing.com tcp
US 8.8.8.8:53 45.19.74.20.in-addr.arpa udp
US 8.8.8.8:53 75.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 ef64a6.api.socdn.com udp
US 76.223.26.96:80 ef64a6.api.socdn.com tcp
US 8.8.8.8:53 96.26.223.76.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 201.64.52.20.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\n7864\s7864.exe

MD5 7bfe6bbe12a10323b0aa5c1bad6ecd5b
SHA1 7ce4508ddfa0200a95cdbfbe66c4c6b5a8b87122
SHA256 f15a491ef671ebddcc3710a4817244c18fe1a5dd444c83137c2fbd601d1c7214
SHA512 bf0438520ade14a53c7d8a76b7f7e3d8eec9060003954e0da1ee17ed5db024c44a28bae23ebfaa006fd50da400faf9fc77a4dcb1071d0501d753b47a6146d5d7

memory/1800-14-0x00007FFE40D55000-0x00007FFE40D56000-memory.dmp

memory/1800-15-0x00007FFE40AA0000-0x00007FFE41441000-memory.dmp

memory/1800-16-0x00007FFE40AA0000-0x00007FFE41441000-memory.dmp

memory/1800-17-0x0000000001350000-0x000000000135E000-memory.dmp

memory/1800-20-0x000000001BF90000-0x000000001C45E000-memory.dmp

memory/1800-21-0x000000001C500000-0x000000001C59C000-memory.dmp

memory/1800-22-0x000000001C7D0000-0x000000001C832000-memory.dmp

memory/1800-23-0x00007FFE40AA0000-0x00007FFE41441000-memory.dmp

memory/1800-24-0x00007FFE40AA0000-0x00007FFE41441000-memory.dmp

memory/1800-25-0x000000001C5D0000-0x000000001C5D8000-memory.dmp

memory/1800-26-0x00007FFE40AA0000-0x00007FFE41441000-memory.dmp

memory/1800-27-0x00007FFE40AA0000-0x00007FFE41441000-memory.dmp

memory/1800-28-0x00007FFE40AA0000-0x00007FFE41441000-memory.dmp

memory/1800-29-0x00007FFE40AA0000-0x00007FFE41441000-memory.dmp

memory/1800-30-0x000000001E5D0000-0x000000001E70C000-memory.dmp

memory/1800-31-0x0000000020690000-0x0000000020B9E000-memory.dmp

memory/1800-32-0x00007FFE40AA0000-0x00007FFE41441000-memory.dmp

memory/1800-33-0x00007FFE40D55000-0x00007FFE40D56000-memory.dmp

memory/1800-34-0x00007FFE40AA0000-0x00007FFE41441000-memory.dmp

memory/1800-35-0x00007FFE40AA0000-0x00007FFE41441000-memory.dmp

memory/1800-37-0x00007FFE40AA0000-0x00007FFE41441000-memory.dmp