Malware Analysis Report

2025-03-15 04:36

Sample ID 241027-16dkpavbjm
Target 7635820815d5e249ba90931ba32f70c1_JaffaCakes118
SHA256 bbcd9cd4a24ade21beb738ef84fa10afd475ecef65108ec29405b414ed34ce99
Tags
upx xtremerat discovery persistence rat spyware
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

bbcd9cd4a24ade21beb738ef84fa10afd475ecef65108ec29405b414ed34ce99

Threat Level: Known bad

The file 7635820815d5e249ba90931ba32f70c1_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

upx xtremerat discovery persistence rat spyware

Xtremerat family

XtremeRAT

Detect XtremeRAT payload

Boot or Logon Autostart Execution: Active Setup

Adds Run key to start application

UPX packed file

Drops file in System32 directory

Enumerates physical storage devices

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-27 22:15

Signatures

Detect XtremeRAT payload

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

Xtremerat family

xtremerat

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-27 22:15

Reported

2024-10-27 22:18

Platform

win7-20241010-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7635820815d5e249ba90931ba32f70c1_JaffaCakes118.exe"

Signatures

Detect XtremeRAT payload

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

XtremeRAT

persistence spyware rat xtremerat

Xtremerat family

xtremerat

Boot or Logon Autostart Execution: Active Setup

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{A81J14C6-813V-MUU8-S8N6-O3NG48YTA8L7} C:\Users\Admin\AppData\Local\Temp\7635820815d5e249ba90931ba32f70c1_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{A81J14C6-813V-MUU8-S8N6-O3NG48YTA8L7}\StubPath = "C:\\Windows\\system32\\InstallDir\\csrss.exe restart" C:\Users\Admin\AppData\Local\Temp\7635820815d5e249ba90931ba32f70c1_JaffaCakes118.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\InstallDir\\csrss.exe" C:\Users\Admin\AppData\Local\Temp\7635820815d5e249ba90931ba32f70c1_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallDir\\csrss.exe" C:\Users\Admin\AppData\Local\Temp\7635820815d5e249ba90931ba32f70c1_JaffaCakes118.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\InstallDir\csrss.exe C:\Users\Admin\AppData\Local\Temp\7635820815d5e249ba90931ba32f70c1_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\InstallDir\csrss.exe C:\Users\Admin\AppData\Local\Temp\7635820815d5e249ba90931ba32f70c1_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

Enumerates physical storage devices

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\7635820815d5e249ba90931ba32f70c1_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\notepad.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\notepad.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\7635820815d5e249ba90931ba32f70c1_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\7635820815d5e249ba90931ba32f70c1_JaffaCakes118.exe"

C:\Windows\SysWOW64\svchost.exe

svchost.exe

C:\Windows\SysWOW64\notepad.exe

notepad.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 hackerfruko.no-ip.org udp

Files

memory/2344-0-0x0000000000C80000-0x0000000000CFC000-memory.dmp

memory/2164-8-0x0000000000C80000-0x0000000000CFC000-memory.dmp

memory/2164-6-0x0000000000C80000-0x0000000000CFC000-memory.dmp

memory/2344-9-0x0000000000C80000-0x0000000000CFC000-memory.dmp

memory/2164-11-0x0000000000C80000-0x0000000000CFC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-27 22:15

Reported

2024-10-27 22:21

Platform

win10v2004-20241007-en

Max time kernel

146s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7635820815d5e249ba90931ba32f70c1_JaffaCakes118.exe"

Signatures

Detect XtremeRAT payload

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
N/A N/A N/A N/A
N/A N/A N/A N/A

XtremeRAT

persistence spyware rat xtremerat

Xtremerat family

xtremerat

Boot or Logon Autostart Execution: Active Setup

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{A81J14C6-813V-MUU8-S8N6-O3NG48YTA8L7}\StubPath = "C:\\Windows\\system32\\InstallDir\\csrss.exe restart" C:\Users\Admin\AppData\Local\Temp\7635820815d5e249ba90931ba32f70c1_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{A81J14C6-813V-MUU8-S8N6-O3NG48YTA8L7} C:\Windows\SysWOW64\svchost.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{A81J14C6-813V-MUU8-S8N6-O3NG48YTA8L7}\StubPath = "C:\\Windows\\system32\\InstallDir\\csrss.exe" C:\Windows\SysWOW64\svchost.exe N/A
Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{A81J14C6-813V-MUU8-S8N6-O3NG48YTA8L7} C:\Users\Admin\AppData\Local\Temp\7635820815d5e249ba90931ba32f70c1_JaffaCakes118.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\InstallDir\\csrss.exe" C:\Users\Admin\AppData\Local\Temp\7635820815d5e249ba90931ba32f70c1_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallDir\\csrss.exe" C:\Users\Admin\AppData\Local\Temp\7635820815d5e249ba90931ba32f70c1_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\InstallDir\\csrss.exe" C:\Windows\SysWOW64\svchost.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallDir\\csrss.exe" C:\Windows\SysWOW64\svchost.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\InstallDir\csrss.exe C:\Users\Admin\AppData\Local\Temp\7635820815d5e249ba90931ba32f70c1_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\InstallDir\csrss.exe C:\Users\Admin\AppData\Local\Temp\7635820815d5e249ba90931ba32f70c1_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
N/A N/A N/A N/A
N/A N/A N/A N/A

Enumerates physical storage devices

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\7635820815d5e249ba90931ba32f70c1_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\svchost.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\notepad.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\notepad.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\7635820815d5e249ba90931ba32f70c1_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\7635820815d5e249ba90931ba32f70c1_JaffaCakes118.exe"

C:\Windows\SysWOW64\svchost.exe

svchost.exe

C:\Windows\SysWOW64\notepad.exe

notepad.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 73.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 31.73.42.20.in-addr.arpa udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp
US 8.8.8.8:53 hackerfruko.no-ip.org udp

Files

memory/4188-0-0x0000000000C80000-0x0000000000CFC000-memory.dmp

memory/4524-6-0x0000000000C80000-0x0000000000CFC000-memory.dmp

C:\Windows\SysWOW64\InstallDir\csrss.exe

MD5 7635820815d5e249ba90931ba32f70c1
SHA1 8f676a92c378c6d67af5db6bd012c9943a979011
SHA256 bbcd9cd4a24ade21beb738ef84fa10afd475ecef65108ec29405b414ed34ce99
SHA512 0352f10d28a044ff18cd35c9d61c8a3a496e3e9e3a88dd20d6d916b929ae19844e84c5632c97a7088607ef169a05f21da106ac93597a2fd601cba883c62bcdb2

memory/944-8-0x0000000000C80000-0x0000000000CFC000-memory.dmp

memory/4188-9-0x0000000000C80000-0x0000000000CFC000-memory.dmp

memory/944-11-0x0000000000C80000-0x0000000000CFC000-memory.dmp