Malware Analysis Report

2025-03-15 05:53

Sample ID 240628-p756jstdmn
Target 1a35caea333db3be203aa25000987fb4_JaffaCakes118
SHA256 ac2afda9e5df38f43680fc64b6718167593d940d9c1986037d128b459f42c327
Tags
persistence privilege_escalation vmprotect
score
8/10

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
8/10

SHA256

ac2afda9e5df38f43680fc64b6718167593d940d9c1986037d128b459f42c327

Threat Level: Likely malicious

The file 1a35caea333db3be203aa25000987fb4_JaffaCakes118 was found to be: Likely malicious.

Malicious Activity Summary

persistence privilege_escalation vmprotect

Event Triggered Execution: AppInit DLLs

Checks computer location settings

VMProtect packed file

Enumerates physical storage devices

Unsigned PE

Modifies registry class

Runs .reg file with regedit

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-28 12:59

Signatures

VMProtect packed file

vmprotect
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: behavioral2

Detonation Overview

Submitted

2024-06-28 12:59

Reported

2024-06-28 13:01

Platform

win10v2004-20240611-en

Max time kernel

130s

Max time network

101s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\1a35caea333db3be203aa25000987fb4_JaffaCakes118.dll,#1

Signatures

Event Triggered Execution: AppInit DLLs

persistence privilege_escalation

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000\Control Panel\International\Geo\Nation C:\Windows\SysWOW64\cmd.exe N/A

VMProtect packed file

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

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command\ = "regedit.exe /s \"%1\"" C:\Windows\SysWOW64\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000_Classes\Local Settings C:\Windows\SysWOW64\cmd.exe N/A

Runs .reg file with regedit

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2236 wrote to memory of 1844 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2236 wrote to memory of 1844 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2236 wrote to memory of 1844 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1844 wrote to memory of 2220 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 1844 wrote to memory of 2220 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 1844 wrote to memory of 2220 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2220 wrote to memory of 2488 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\regedit.exe
PID 2220 wrote to memory of 2488 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\regedit.exe
PID 2220 wrote to memory of 2488 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\regedit.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\1a35caea333db3be203aa25000987fb4_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\1a35caea333db3be203aa25000987fb4_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\cmd.exe

cmd /c C:\Users\Admin\AppData\Local\Temp\a.reg

C:\Windows\SysWOW64\regedit.exe

"regedit.exe" /s "C:\Users\Admin\AppData\Local\Temp\a.reg"

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.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 95.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 80.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.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 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/1844-0-0x0000000010000000-0x000000001000F000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\a.reg

MD5 b100f5324ef74ded0b998e64d07a2e19
SHA1 40b0d7f51bf2dd8451f1b723d21355c471a5fa46
SHA256 3db613d24a75ae220891698c055e1c580a42e58564f568a0510db87581cc2042
SHA512 c12391bb37c334074f7d7e1257b6364fd5cbce848e0a8fe15b8326f54fd9568fe3baec58618c4334027a774a06a08ec249cb71db925c1f85feee6a3d3a816c04

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 12:59

Reported

2024-06-28 13:01

Platform

win7-20240508-en

Max time kernel

121s

Max time network

122s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\1a35caea333db3be203aa25000987fb4_JaffaCakes118.dll,#1

Signatures

Event Triggered Execution: AppInit DLLs

persistence privilege_escalation

VMProtect packed file

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

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command\ = "regedit.exe /s \"%1\"" C:\Windows\SysWOW64\rundll32.exe N/A

Runs .reg file with regedit

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2884 wrote to memory of 2096 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2884 wrote to memory of 2096 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2884 wrote to memory of 2096 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2884 wrote to memory of 2096 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2884 wrote to memory of 2096 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2884 wrote to memory of 2096 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2884 wrote to memory of 2096 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2096 wrote to memory of 2212 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2096 wrote to memory of 2212 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2096 wrote to memory of 2212 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2096 wrote to memory of 2212 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2212 wrote to memory of 2612 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\regedit.exe
PID 2212 wrote to memory of 2612 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\regedit.exe
PID 2212 wrote to memory of 2612 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\regedit.exe
PID 2212 wrote to memory of 2612 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\regedit.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\1a35caea333db3be203aa25000987fb4_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\1a35caea333db3be203aa25000987fb4_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\cmd.exe

cmd /c C:\Users\Admin\AppData\Local\Temp\a.reg

C:\Windows\SysWOW64\regedit.exe

"regedit.exe" /s "C:\Users\Admin\AppData\Local\Temp\a.reg"

Network

N/A

Files

memory/2096-0-0x0000000010000000-0x000000001000F000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\a.reg

MD5 b100f5324ef74ded0b998e64d07a2e19
SHA1 40b0d7f51bf2dd8451f1b723d21355c471a5fa46
SHA256 3db613d24a75ae220891698c055e1c580a42e58564f568a0510db87581cc2042
SHA512 c12391bb37c334074f7d7e1257b6364fd5cbce848e0a8fe15b8326f54fd9568fe3baec58618c4334027a774a06a08ec249cb71db925c1f85feee6a3d3a816c04