Malware Analysis Report

2025-01-18 12:28

Sample ID 240830-vdnmasvbjb
Target cb40c157e93e8013af5447c28fd3b942_JaffaCakes118
SHA256 b8d074da8531b10cee3844431f8502da1a3932586fb6fa82da7a38da44409026
Tags
discovery upx formbook l5 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

b8d074da8531b10cee3844431f8502da1a3932586fb6fa82da7a38da44409026

Threat Level: Known bad

The file cb40c157e93e8013af5447c28fd3b942_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

discovery upx formbook l5 rat spyware stealer trojan

Formbook

Formbook payload

UPX packed file

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 16:52

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

2024-08-30 16:52

Reported

2024-08-30 16:55

Platform

win7-20240729-en

Max time kernel

141s

Max time network

16s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe"

Signatures

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
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
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\cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe"

Network

N/A

Files

memory/1036-0-0x0000000000400000-0x0000000000586000-memory.dmp

memory/1036-1-0x0000000000220000-0x0000000000221000-memory.dmp

memory/1036-2-0x0000000000400000-0x0000000000586000-memory.dmp

memory/1036-4-0x0000000000220000-0x0000000000221000-memory.dmp

memory/1036-6-0x0000000000400000-0x0000000000586000-memory.dmp

memory/1036-7-0x0000000000400000-0x0000000000586000-memory.dmp

memory/1036-8-0x0000000000400000-0x0000000000586000-memory.dmp

memory/1036-9-0x0000000000400000-0x0000000000586000-memory.dmp

memory/1036-11-0x0000000000400000-0x0000000000586000-memory.dmp

memory/1036-12-0x0000000000400000-0x0000000000586000-memory.dmp

memory/1036-13-0x0000000000400000-0x0000000000586000-memory.dmp

memory/1036-14-0x0000000000400000-0x0000000000586000-memory.dmp

memory/1036-16-0x0000000000400000-0x0000000000586000-memory.dmp

memory/1036-17-0x0000000000400000-0x0000000000586000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-30 16:52

Reported

2024-08-30 16:55

Platform

win10v2004-20240802-en

Max time kernel

135s

Max time network

133s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe"

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

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

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\cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\cb40c157e93e8013af5447c28fd3b942_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=3884,i,7447299413640964517,4240724842020506306,262144 --variations-seed-version --mojo-platform-channel-handle=4148 /prefetch:8

C:\Users\Admin\AppData\Local\Temp\cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 43.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.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 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 14.179.89.13.in-addr.arpa udp

Files

memory/4532-0-0x0000000000400000-0x0000000000586000-memory.dmp

memory/4532-1-0x0000000002330000-0x0000000002331000-memory.dmp

memory/4532-2-0x0000000000400000-0x0000000000586000-memory.dmp

memory/4532-4-0x0000000002330000-0x0000000002331000-memory.dmp

memory/4052-6-0x0000000000400000-0x000000000042A000-memory.dmp

memory/4532-9-0x0000000000400000-0x0000000000586000-memory.dmp

memory/4052-10-0x0000000000AF0000-0x0000000000E3A000-memory.dmp