Malware Analysis Report

2025-08-06 02:47

Sample ID 241031-bs29fsxmbr
Target 810132d096e4a90fffdcbec370fb4954_JaffaCakes118
SHA256 4d94cfc56febc282da0ed34cacc64284940e0c82c33843a93d7949b056106587
Tags
defense_evasion discovery persistence upx
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

4d94cfc56febc282da0ed34cacc64284940e0c82c33843a93d7949b056106587

Threat Level: Known bad

The file 810132d096e4a90fffdcbec370fb4954_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

defense_evasion discovery persistence upx

Modifies WinLogon for persistence

Loads dropped DLL

Executes dropped EXE

Impair Defenses: Safe Mode Boot

Adds Run key to start application

UPX packed file

System Location Discovery: System Language Discovery

Program crash

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Kills process with taskkill

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-31 01:25

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-31 01:25

Reported

2024-10-31 03:13

Platform

win7-20241023-en

Max time kernel

143s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\810132d096e4a90fffdcbec370fb4954_JaffaCakes118.exe"

Signatures

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "C:\\WINDÎWS\\åõðlîrår.exe" C:\WINDÎWS\åõðlîrår.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\WINDÎWS\åõðlîrår.exe N/A

Impair Defenses: Safe Mode Boot

defense_evasion
Description Indicator Process Target
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\ProfSvc C:\WINDÎWS\åõðlîrår.exe N/A
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\Power C:\WINDÎWS\åõðlîrår.exe N/A
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\WinDefend C:\WINDÎWS\åõðlîrår.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\C:\WINDÎWS\åõðlîrår.exe = "C:\\WINDÎWS\\åõðlîrår.exe" C:\WINDÎWS\åõðlîrår.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

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\810132d096e4a90fffdcbec370fb4954_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\WINDÎWS\åõðlîrår.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\taskkill.exe N/A

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\810132d096e4a90fffdcbec370fb4954_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\810132d096e4a90fffdcbec370fb4954_JaffaCakes118.exe"

C:\WINDÎWS\åõðlîrår.exe

C:\WINDÎWS\åõðlîrår.exe

C:\Windows\SysWOW64\taskkill.exe

taskkill /F /IM explorer.exe

Network

N/A

Files

memory/1372-0-0x0000000000404000-0x000000000040A000-memory.dmp

memory/1372-1-0x0000000000400000-0x000000000042E000-memory.dmp

memory/1372-2-0x0000000000400000-0x000000000042E000-memory.dmp

\WINDÎWS\åõðlîrår.exe

MD5 810132d096e4a90fffdcbec370fb4954
SHA1 43eb66678e036d09b18c0388331bc6e5c3815d22
SHA256 4d94cfc56febc282da0ed34cacc64284940e0c82c33843a93d7949b056106587
SHA512 25e1bd903ec9651fe233678c6de27c6d02621f89850e7742125be1f8f43fc0311d12df4177a52f9366bdfab2345f8cfbaa74caed4118bee45b3f5939e1ab7836

memory/1884-11-0x0000000000400000-0x000000000042E000-memory.dmp

memory/1884-12-0x0000000000400000-0x000000000042E000-memory.dmp

memory/1884-13-0x0000000000400000-0x000000000042E000-memory.dmp

memory/1372-14-0x0000000000404000-0x000000000040A000-memory.dmp

memory/1372-15-0x0000000000400000-0x000000000042E000-memory.dmp

memory/1884-17-0x0000000000400000-0x000000000042E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-31 01:25

Reported

2024-10-31 03:14

Platform

win10v2004-20241007-en

Max time kernel

143s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\810132d096e4a90fffdcbec370fb4954_JaffaCakes118.exe"

Signatures

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "C:\\WINDÎWS\\åõðlîrår.exe" C:\WINDÎWS\åõðlîrår.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\WINDÎWS\åõðlîrår.exe N/A

Impair Defenses: Safe Mode Boot

defense_evasion
Description Indicator Process Target
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\CBDHSvc C:\WINDÎWS\åõðlîrår.exe N/A
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\UserManager C:\WINDÎWS\åõðlîrår.exe N/A
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\SerCx2.sys C:\WINDÎWS\åõðlîrår.exe N/A
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\ProfSvc C:\WINDÎWS\åõðlîrår.exe N/A
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\Power C:\WINDÎWS\åõðlîrår.exe N/A
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\iai2c.sys C:\WINDÎWS\åõðlîrår.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\C:\WINDÎWS\åõðlîrår.exe = "C:\\WINDÎWS\\åõðlîrår.exe" C:\WINDÎWS\åõðlîrår.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

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\810132d096e4a90fffdcbec370fb4954_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\WINDÎWS\åõðlîrår.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\taskkill.exe N/A

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\810132d096e4a90fffdcbec370fb4954_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\810132d096e4a90fffdcbec370fb4954_JaffaCakes118.exe"

C:\WINDÎWS\åõðlîrår.exe

C:\WINDÎWS\åõðlîrår.exe

C:\Windows\SysWOW64\taskkill.exe

taskkill /F /IM explorer.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1060 -ip 1060

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1060 -s 376

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 2604 -ip 2604

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2604 -s 716

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2604 -ip 2604

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2604 -s 720

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2604 -ip 2604

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2604 -s 724

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 79.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 58.99.105.20.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 73.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 71.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa 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 8.8.8.8:53 169.117.168.52.in-addr.arpa udp

Files

memory/1060-0-0x0000000000404000-0x000000000040A000-memory.dmp

memory/1060-1-0x0000000000400000-0x000000000042E000-memory.dmp

memory/1060-2-0x0000000000400000-0x000000000042E000-memory.dmp

C:\WINDÎWS\åõðlîrår.exe

MD5 810132d096e4a90fffdcbec370fb4954
SHA1 43eb66678e036d09b18c0388331bc6e5c3815d22
SHA256 4d94cfc56febc282da0ed34cacc64284940e0c82c33843a93d7949b056106587
SHA512 25e1bd903ec9651fe233678c6de27c6d02621f89850e7742125be1f8f43fc0311d12df4177a52f9366bdfab2345f8cfbaa74caed4118bee45b3f5939e1ab7836

memory/2604-7-0x0000000000400000-0x000000000042E000-memory.dmp

memory/2604-8-0x0000000000400000-0x000000000042E000-memory.dmp

memory/2604-9-0x0000000000400000-0x000000000042E000-memory.dmp

memory/1060-10-0x0000000000404000-0x000000000040A000-memory.dmp

memory/1060-11-0x0000000000400000-0x000000000042E000-memory.dmp

memory/2604-13-0x0000000000400000-0x000000000042E000-memory.dmp