Malware Analysis Report

2025-06-16 06:57

Sample ID 241104-baklpayhqh
Target 8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118
SHA256 df4a00cefda94fd8e9c271d1aca219d8c7f3615417749ab4d25e2892f863c386
Tags
discovery evasion persistence trojan
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

df4a00cefda94fd8e9c271d1aca219d8c7f3615417749ab4d25e2892f863c386

Threat Level: Known bad

The file 8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

discovery evasion persistence trojan

Modifies visiblity of hidden/system files in Explorer

UAC bypass

Adds policy Run key to start application

Disables taskbar notifications via registry modification

Deletes itself

Blocklisted process makes network request

Drops file in Program Files directory

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-04 00:56

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-04 00:56

Reported

2024-11-04 03:20

Platform

win7-20241010-en

Max time kernel

117s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe"

Signatures

Modifies visiblity of hidden/system files in Explorer

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" C:\Windows\SysWOW64\msiexec.exe N/A

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\SysWOW64\msiexec.exe N/A

Adds policy Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\software\microsoft\windows\currentversion\Policies\Explorer\Run C:\Windows\SysWOW64\msiexec.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\1704421287 = "C:\\PROGRA~3\\mskcfx.exe" C:\Windows\SysWOW64\msiexec.exe N/A

Disables taskbar notifications via registry modification

evasion

Deletes itself

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

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~3\mskcfx.exe C:\Windows\SysWOW64\msiexec.exe N/A
File created C:\PROGRA~3\259455465 C:\Windows\SysWOW64\msiexec.exe N/A
File opened for modification C:\PROGRA~3\mskcfx.exe C:\Windows\SysWOW64\msiexec.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\msiexec.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\msiexec.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe N/A
N/A N/A C:\Windows\SysWOW64\msiexec.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\msiexec.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2552 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe C:\Windows\SysWOW64\msiexec.exe
PID 2552 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe C:\Windows\SysWOW64\msiexec.exe
PID 2552 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe C:\Windows\SysWOW64\msiexec.exe
PID 2552 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe C:\Windows\SysWOW64\msiexec.exe
PID 2552 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe C:\Windows\SysWOW64\msiexec.exe
PID 2552 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe C:\Windows\SysWOW64\msiexec.exe
PID 2552 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe C:\Windows\SysWOW64\msiexec.exe
PID 2552 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe C:\Windows\SysWOW64\msiexec.exe
PID 2552 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe C:\Windows\SysWOW64\msiexec.exe
PID 2552 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe C:\Windows\SysWOW64\msiexec.exe
PID 2552 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe C:\Windows\SysWOW64\msiexec.exe
PID 2552 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe C:\Windows\SysWOW64\msiexec.exe
PID 2552 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe C:\Windows\SysWOW64\msiexec.exe
PID 2552 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe C:\Windows\SysWOW64\msiexec.exe

Processes

C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe"

C:\Windows\SysWOW64\msiexec.exe

"C:\Windows\system32\msiexec.exe"

C:\Windows\SysWOW64\msiexec.exe

"C:\Windows\system32\msiexec.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 europe.pool.ntp.org udp
US 8.8.4.4:53 microsoft.com udp
NL 20.76.201.171:80 microsoft.com tcp
US 8.8.4.4:53 tds.repack.it udp
US 8.8.8.8:53 tds.repack.it udp
US 8.8.4.4:53 bmp.pilenga.co.uk udp
US 8.8.8.8:53 bmp.pilenga.co.uk udp
US 8.8.4.4:53 microsoft.com udp
AU 20.70.246.20:80 microsoft.com tcp
US 8.8.4.4:53 tds.repack.it udp
US 8.8.4.4:53 bmp.pilenga.co.uk udp

Files

memory/2552-0-0x0000000000220000-0x0000000000226000-memory.dmp

memory/2552-1-0x0000000000120000-0x0000000000160000-memory.dmp

memory/2576-2-0x0000000000A10000-0x0000000000A24000-memory.dmp

memory/2576-3-0x0000000000A10000-0x0000000000A24000-memory.dmp

memory/2576-5-0x0000000000A10000-0x0000000000A24000-memory.dmp

memory/2552-8-0x0000000000400000-0x0000000000427000-memory.dmp

memory/2552-9-0x0000000000120000-0x0000000000160000-memory.dmp

memory/2720-13-0x0000000000090000-0x0000000000098000-memory.dmp

memory/2720-14-0x00000000024A0000-0x00000000024E0000-memory.dmp

memory/2720-21-0x0000000000090000-0x0000000000098000-memory.dmp

memory/2720-22-0x00000000024A0000-0x00000000024E0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-04 00:56

Reported

2024-11-04 03:05

Platform

win10v2004-20241007-en

Max time kernel

140s

Max time network

138s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe"

Signatures

Modifies visiblity of hidden/system files in Explorer

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" C:\Windows\SysWOW64\msiexec.exe N/A

Adds policy Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\software\microsoft\windows\currentversion\Policies\Explorer\Run C:\Windows\SysWOW64\msiexec.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\1619438023 = "C:\\PROGRA~3\\msskva.exe" C:\Windows\SysWOW64\msiexec.exe N/A

Disables taskbar notifications via registry modification

evasion

Deletes itself

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

Blocklisted process makes network request

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

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~3\241140593 C:\Windows\SysWOW64\msiexec.exe N/A
File opened for modification C:\PROGRA~3\msskva.exe C:\Windows\SysWOW64\msiexec.exe N/A
File created C:\PROGRA~3\msskva.exe C:\Windows\SysWOW64\msiexec.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\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\msiexec.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\msiexec.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\8e5aa79fe68b88513435f0bcb03dddae_JaffaCakes118.exe"

C:\Windows\SysWOW64\msiexec.exe

"C:\Windows\system32\msiexec.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 europe.pool.ntp.org udp
US 8.8.4.4:53 microsoft.com udp
US 20.112.250.133:80 microsoft.com tcp
US 8.8.8.8:53 tds.repack.it udp
US 8.8.8.8:53 bmp.pilenga.co.uk udp
US 8.8.8.8:53 73.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 27.59.147.94.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 4.4.8.8.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 133.250.112.20.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.4.4:53 microsoft.com udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
AU 20.70.246.20:80 microsoft.com tcp
US 8.8.8.8:53 tds.repack.it udp
US 8.8.8.8:53 bmp.pilenga.co.uk udp
US 8.8.8.8:53 20.246.70.20.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.4.4:53 microsoft.com udp
US 20.112.250.133:80 microsoft.com tcp
US 8.8.8.8:53 tds.repack.it udp
US 8.8.8.8:53 bmp.pilenga.co.uk udp

Files

memory/2072-0-0x00000000009D0000-0x00000000009D6000-memory.dmp

memory/2072-1-0x0000000000930000-0x0000000000940000-memory.dmp

memory/1716-2-0x0000000000270000-0x0000000000282000-memory.dmp

memory/1716-6-0x0000000000270000-0x0000000000282000-memory.dmp

memory/1716-4-0x0000000000270000-0x0000000000282000-memory.dmp

memory/1716-7-0x0000000000200000-0x0000000000208000-memory.dmp

memory/1716-8-0x0000000001FE0000-0x0000000001FF0000-memory.dmp

memory/2072-9-0x0000000000400000-0x0000000000427000-memory.dmp

memory/1716-11-0x0000000001FE0000-0x0000000001FF0000-memory.dmp

memory/1716-17-0x0000000000200000-0x0000000000208000-memory.dmp

memory/1716-19-0x0000000001FE0000-0x0000000001FF0000-memory.dmp

memory/1716-20-0x0000000001FE0000-0x0000000001FF0000-memory.dmp