Malware Analysis Report

2025-03-15 00:55

Sample ID 240626-slw8aszekf
Target 126d45710a48006d4e8d3c13a96a5b97_JaffaCakes118
SHA256 2cc89fa3dc1b4a107694aae6de5c6211724bcb02f4a15ade957d1382915dced5
Tags
upx defense_evasion evasion persistence
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

2cc89fa3dc1b4a107694aae6de5c6211724bcb02f4a15ade957d1382915dced5

Threat Level: Known bad

The file 126d45710a48006d4e8d3c13a96a5b97_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

upx defense_evasion evasion persistence

Modifies WinLogon for persistence

Disables Task Manager via registry modification

UPX packed file

Checks computer location settings

Impair Defenses: Safe Mode Boot

Unsigned PE

Enumerates physical storage devices

Kills process with taskkill

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-26 15:13

Signatures

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-26 15:13

Reported

2024-06-26 15:15

Platform

win7-20240508-en

Max time kernel

140s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\126d45710a48006d4e8d3c13a96a5b97_JaffaCakes118.exe"

Signatures

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\126d45710a48006d4e8d3c13a96a5b97_JaffaCakes118.exe\"" C:\Users\Admin\AppData\Local\Temp\126d45710a48006d4e8d3c13a96a5b97_JaffaCakes118.exe N/A

Disables Task Manager via registry modification

evasion

Impair Defenses: Safe Mode Boot

defense_evasion
Description Indicator Process Target
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\WinDefend C:\Users\Admin\AppData\Local\Temp\126d45710a48006d4e8d3c13a96a5b97_JaffaCakes118.exe N/A
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\ProfSvc C:\Users\Admin\AppData\Local\Temp\126d45710a48006d4e8d3c13a96a5b97_JaffaCakes118.exe N/A
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\Power C:\Users\Admin\AppData\Local\Temp\126d45710a48006d4e8d3c13a96a5b97_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

Enumerates physical storage devices

Kills process with taskkill

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

Suspicious use of AdjustPrivilegeToken

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

Processes

C:\Users\Admin\AppData\Local\Temp\126d45710a48006d4e8d3c13a96a5b97_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\126d45710a48006d4e8d3c13a96a5b97_JaffaCakes118.exe"

C:\Windows\SysWOW64\taskkill.exe

"C:\Windows\System32\taskkill.exe" /f /im explorer.exe

Network

N/A

Files

memory/1904-1-0x00000000001B0000-0x00000000001B2000-memory.dmp

memory/1904-0-0x0000000000400000-0x000000000045B000-memory.dmp

memory/1904-2-0x0000000000400000-0x000000000045B000-memory.dmp

memory/1904-3-0x0000000000400000-0x000000000045B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-26 15:13

Reported

2024-06-26 15:15

Platform

win10v2004-20240611-en

Max time kernel

141s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\126d45710a48006d4e8d3c13a96a5b97_JaffaCakes118.exe"

Signatures

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\126d45710a48006d4e8d3c13a96a5b97_JaffaCakes118.exe\"" C:\Users\Admin\AppData\Local\Temp\126d45710a48006d4e8d3c13a96a5b97_JaffaCakes118.exe N/A

Disables Task Manager via registry modification

evasion

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\126d45710a48006d4e8d3c13a96a5b97_JaffaCakes118.exe N/A

Impair Defenses: Safe Mode Boot

defense_evasion
Description Indicator Process Target
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\SerCx2.sys C:\Users\Admin\AppData\Local\Temp\126d45710a48006d4e8d3c13a96a5b97_JaffaCakes118.exe N/A
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\ProfSvc C:\Users\Admin\AppData\Local\Temp\126d45710a48006d4e8d3c13a96a5b97_JaffaCakes118.exe N/A
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\Power C:\Users\Admin\AppData\Local\Temp\126d45710a48006d4e8d3c13a96a5b97_JaffaCakes118.exe N/A
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\iai2c.sys C:\Users\Admin\AppData\Local\Temp\126d45710a48006d4e8d3c13a96a5b97_JaffaCakes118.exe N/A
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\CBDHSvc C:\Users\Admin\AppData\Local\Temp\126d45710a48006d4e8d3c13a96a5b97_JaffaCakes118.exe N/A
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\UserManager C:\Users\Admin\AppData\Local\Temp\126d45710a48006d4e8d3c13a96a5b97_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

Enumerates physical storage devices

Kills process with taskkill

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

Suspicious use of AdjustPrivilegeToken

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

Processes

C:\Users\Admin\AppData\Local\Temp\126d45710a48006d4e8d3c13a96a5b97_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\126d45710a48006d4e8d3c13a96a5b97_JaffaCakes118.exe"

C:\Windows\SysWOW64\taskkill.exe

"C:\Windows\System32\taskkill.exe" /f /im explorer.exe

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4440,i,8998666007764333392,14724298544432336038,262144 --variations-seed-version --mojo-platform-channel-handle=4132 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.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 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 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 89.90.14.23.in-addr.arpa udp
BE 2.17.107.128:443 www.bing.com tcp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 128.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 107.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
IE 52.111.236.22:443 tcp
US 8.8.8.8:53 80.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.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 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/2352-0-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2352-1-0x0000000001F20000-0x0000000001F22000-memory.dmp

memory/2352-2-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2352-3-0x0000000000400000-0x000000000045B000-memory.dmp