Malware Analysis Report

2025-01-18 12:25

Sample ID 240830-fge21axcme
Target ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118
SHA256 318d039e63460267fa92391159395a8d82f58e98c4c88831eb20780e485d81b3
Tags
formbook l5 bootkit discovery persistence rat spyware stealer 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

318d039e63460267fa92391159395a8d82f58e98c4c88831eb20780e485d81b3

Threat Level: Known bad

The file ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

formbook l5 bootkit discovery persistence rat spyware stealer trojan

Formbook

Formbook payload

Writes to the Master Boot Record (MBR)

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-30 04:50

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-30 04:50

Reported

2024-08-30 04:52

Platform

win7-20240708-en

Max time kernel

122s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe"

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

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

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.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\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2692 wrote to memory of 2936 N/A C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe
PID 2692 wrote to memory of 2936 N/A C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe
PID 2692 wrote to memory of 2936 N/A C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe
PID 2692 wrote to memory of 2936 N/A C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe
PID 2692 wrote to memory of 2936 N/A C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe
PID 2692 wrote to memory of 2936 N/A C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe
PID 2692 wrote to memory of 2936 N/A C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe

Network

N/A

Files

memory/2692-1-0x0000000000670000-0x00000000006B2000-memory.dmp

memory/2692-0-0x0000000000400000-0x00000000005FD000-memory.dmp

memory/2692-11-0x0000000001F50000-0x0000000001F52000-memory.dmp

memory/2692-18-0x0000000002090000-0x0000000002091000-memory.dmp

memory/2692-17-0x00000000020A0000-0x00000000020A1000-memory.dmp

memory/2692-16-0x00000000020B0000-0x00000000020B1000-memory.dmp

memory/2692-15-0x0000000001F30000-0x0000000001F31000-memory.dmp

memory/2692-14-0x0000000001F20000-0x0000000001F21000-memory.dmp

memory/2692-13-0x0000000001F60000-0x0000000001F61000-memory.dmp

memory/2692-12-0x0000000001F40000-0x0000000001F41000-memory.dmp

memory/2692-10-0x00000000006E0000-0x00000000006E1000-memory.dmp

memory/2692-9-0x00000000002A0000-0x00000000002A1000-memory.dmp

memory/2692-8-0x00000000001F0000-0x00000000001F1000-memory.dmp

memory/2692-7-0x00000000002B0000-0x00000000002B1000-memory.dmp

memory/2692-6-0x00000000002C0000-0x00000000002C1000-memory.dmp

memory/2692-5-0x00000000002D0000-0x00000000002D1000-memory.dmp

memory/2692-4-0x00000000001C0000-0x00000000001C1000-memory.dmp

memory/2692-3-0x00000000001E0000-0x00000000001E1000-memory.dmp

memory/2692-19-0x00000000020C0000-0x00000000020C1000-memory.dmp

memory/2692-2-0x00000000006C0000-0x00000000006C1000-memory.dmp

memory/2692-20-0x0000000000400000-0x00000000005FD000-memory.dmp

memory/2692-21-0x0000000000670000-0x00000000006B2000-memory.dmp

memory/2692-23-0x00000000020C0000-0x00000000020C1000-memory.dmp

memory/2936-25-0x0000000000400000-0x000000000042A000-memory.dmp

memory/2692-33-0x00000000041C0000-0x00000000043BD000-memory.dmp

memory/2936-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2936-29-0x0000000000400000-0x000000000042A000-memory.dmp

memory/2936-27-0x0000000000400000-0x000000000042A000-memory.dmp

memory/2692-35-0x0000000000400000-0x00000000005FD000-memory.dmp

memory/2936-38-0x00000000008D0000-0x0000000000BD3000-memory.dmp

memory/2936-39-0x00000000008D0000-0x0000000000BD3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-30 04:50

Reported

2024-08-30 04:52

Platform

win10v2004-20240802-en

Max time kernel

132s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe"

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

rat
Description Indicator Process Target
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\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.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=4028,i,8231329449558834090,4540802069600791165,262144 --variations-seed-version --mojo-platform-channel-handle=4464 /prefetch:8

C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\ca3bf59d8a50c50129515551c389f6d8_JaffaCakes118.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 65.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa 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 66.229.138.52.in-addr.arpa udp

Files

memory/2028-0-0x0000000000400000-0x00000000005FD000-memory.dmp

memory/2028-1-0x0000000000950000-0x0000000000992000-memory.dmp

memory/2028-8-0x00000000008E0000-0x00000000008E1000-memory.dmp

memory/2028-7-0x0000000000920000-0x0000000000921000-memory.dmp

memory/2028-10-0x0000000002590000-0x0000000002591000-memory.dmp

memory/2028-11-0x00000000025D0000-0x00000000025D2000-memory.dmp

memory/2028-9-0x0000000000910000-0x0000000000911000-memory.dmp

memory/2028-6-0x0000000000930000-0x0000000000931000-memory.dmp

memory/2028-5-0x0000000002540000-0x0000000002541000-memory.dmp

memory/2028-4-0x00000000008B0000-0x00000000008B1000-memory.dmp

memory/2028-3-0x00000000008D0000-0x00000000008D1000-memory.dmp

memory/2028-2-0x0000000002570000-0x0000000002571000-memory.dmp

memory/2028-18-0x00000000025C0000-0x00000000025C1000-memory.dmp

memory/2028-17-0x00000000025F0000-0x00000000025F1000-memory.dmp

memory/2028-16-0x0000000002600000-0x0000000002601000-memory.dmp

memory/2028-15-0x0000000002610000-0x0000000002611000-memory.dmp

memory/2028-14-0x00000000025B0000-0x00000000025B1000-memory.dmp

memory/2028-13-0x00000000025A0000-0x00000000025A1000-memory.dmp

memory/2028-12-0x00000000025E0000-0x00000000025E1000-memory.dmp

memory/2028-19-0x0000000002870000-0x0000000002871000-memory.dmp

memory/2028-20-0x0000000000400000-0x00000000005FD000-memory.dmp

memory/2028-21-0x0000000000950000-0x0000000000992000-memory.dmp

memory/2028-23-0x0000000002870000-0x0000000002871000-memory.dmp

memory/1068-25-0x0000000000400000-0x000000000042A000-memory.dmp

memory/2028-28-0x0000000000400000-0x00000000005FD000-memory.dmp

memory/1068-29-0x00000000009B0000-0x0000000000CFA000-memory.dmp