Malware Analysis Report

2025-03-15 05:52

Sample ID 240628-mh2eysvarf
Target 19c9ebb9f0f15b7a84db4101836656f0_JaffaCakes118
SHA256 474f13805ec346c7514fb92dc35ab449848da6a3f1152ef6104ffc8f46c6c364
Tags
vmprotect persistence privilege_escalation
score
8/10

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
8/10

SHA256

474f13805ec346c7514fb92dc35ab449848da6a3f1152ef6104ffc8f46c6c364

Threat Level: Likely malicious

The file 19c9ebb9f0f15b7a84db4101836656f0_JaffaCakes118 was found to be: Likely malicious.

Malicious Activity Summary

vmprotect persistence privilege_escalation

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 10:28

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: behavioral1

Detonation Overview

Submitted

2024-06-28 10:28

Reported

2024-06-28 10:31

Platform

win7-20240611-en

Max time kernel

121s

Max time network

121s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\19c9ebb9f0f15b7a84db4101836656f0_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 816 wrote to memory of 1568 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 816 wrote to memory of 1568 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 816 wrote to memory of 1568 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 816 wrote to memory of 1568 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 816 wrote to memory of 1568 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 816 wrote to memory of 1568 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 816 wrote to memory of 1568 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1568 wrote to memory of 768 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 1568 wrote to memory of 768 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 1568 wrote to memory of 768 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 1568 wrote to memory of 768 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 768 wrote to memory of 2644 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\regedit.exe
PID 768 wrote to memory of 2644 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\regedit.exe
PID 768 wrote to memory of 2644 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\regedit.exe
PID 768 wrote to memory of 2644 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\19c9ebb9f0f15b7a84db4101836656f0_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\19c9ebb9f0f15b7a84db4101836656f0_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/1568-0-0x0000000010000000-0x000000001000F000-memory.dmp

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

MD5 b100f5324ef74ded0b998e64d07a2e19
SHA1 40b0d7f51bf2dd8451f1b723d21355c471a5fa46
SHA256 3db613d24a75ae220891698c055e1c580a42e58564f568a0510db87581cc2042
SHA512 c12391bb37c334074f7d7e1257b6364fd5cbce848e0a8fe15b8326f54fd9568fe3baec58618c4334027a774a06a08ec249cb71db925c1f85feee6a3d3a816c04

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 10:28

Reported

2024-06-28 10:31

Platform

win10v2004-20240611-en

Max time kernel

149s

Max time network

150s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\19c9ebb9f0f15b7a84db4101836656f0_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-1-5-21-4204450073-1267028356-951339405-1000\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-1-5-21-4204450073-1267028356-951339405-1000_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 4976 wrote to memory of 3624 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4976 wrote to memory of 3624 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4976 wrote to memory of 3624 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3624 wrote to memory of 3608 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 3624 wrote to memory of 3608 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 3624 wrote to memory of 3608 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 3608 wrote to memory of 652 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\regedit.exe
PID 3608 wrote to memory of 652 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\regedit.exe
PID 3608 wrote to memory of 652 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\19c9ebb9f0f15b7a84db4101836656f0_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\19c9ebb9f0f15b7a84db4101836656f0_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 8.8.8.8.in-addr.arpa udp
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 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 2.181.190.20.in-addr.arpa udp
BE 88.221.83.184:443 www.bing.com tcp
US 8.8.8.8:53 184.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/3624-0-0x0000000010000000-0x000000001000F000-memory.dmp

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

MD5 b100f5324ef74ded0b998e64d07a2e19
SHA1 40b0d7f51bf2dd8451f1b723d21355c471a5fa46
SHA256 3db613d24a75ae220891698c055e1c580a42e58564f568a0510db87581cc2042
SHA512 c12391bb37c334074f7d7e1257b6364fd5cbce848e0a8fe15b8326f54fd9568fe3baec58618c4334027a774a06a08ec249cb71db925c1f85feee6a3d3a816c04