Malware Analysis Report

2025-01-18 12:24

Sample ID 240829-klb85ascmh
Target c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118
SHA256 cc7b6a1d27e2c8f4606dd8c6d5746eba33b7ac47a5d032151ceeeaa6ebc184eb
Tags
formbook grv discovery 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

cc7b6a1d27e2c8f4606dd8c6d5746eba33b7ac47a5d032151ceeeaa6ebc184eb

Threat Level: Known bad

The file c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

formbook grv discovery rat spyware stealer trojan

Formbook

Formbook payload

Suspicious use of SetThreadContext

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-29 08:40

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-29 08:40

Reported

2024-08-29 08:43

Platform

win7-20240704-en

Max time kernel

120s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_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\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2316 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe
PID 2316 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe
PID 2316 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe
PID 2316 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe
PID 2316 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe
PID 2316 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe
PID 2316 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe"

Network

N/A

Files

memory/2316-0-0x0000000074D2E000-0x0000000074D2F000-memory.dmp

memory/2316-1-0x0000000000820000-0x00000000008C2000-memory.dmp

memory/2316-2-0x0000000074D20000-0x000000007540E000-memory.dmp

memory/2316-3-0x0000000001E60000-0x0000000001E6A000-memory.dmp

memory/2316-4-0x0000000074D2E000-0x0000000074D2F000-memory.dmp

memory/2316-5-0x0000000074D20000-0x000000007540E000-memory.dmp

memory/2316-6-0x0000000004960000-0x00000000049CC000-memory.dmp

memory/2648-7-0x0000000000400000-0x000000000042E000-memory.dmp

memory/2648-9-0x0000000000400000-0x000000000042E000-memory.dmp

memory/2648-14-0x0000000000400000-0x000000000042E000-memory.dmp

memory/2648-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2316-15-0x0000000074D20000-0x000000007540E000-memory.dmp

memory/2648-16-0x00000000008D0000-0x0000000000BD3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-29 08:40

Reported

2024-08-29 08:43

Platform

win10v2004-20240802-en

Max time kernel

137s

Max time network

135s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_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\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_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=4512,i,4174666705242427184,7333705955694532165,262144 --variations-seed-version --mojo-platform-channel-handle=4500 /prefetch:8

C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\c87f83cb7568c13d1049f8308fe2fea0_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.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 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 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 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

Files

memory/1300-0-0x0000000074A1E000-0x0000000074A1F000-memory.dmp

memory/1300-1-0x0000000000360000-0x0000000000402000-memory.dmp

memory/1300-2-0x0000000004DC0000-0x0000000004E5C000-memory.dmp

memory/1300-3-0x0000000005480000-0x0000000005A24000-memory.dmp

memory/1300-4-0x0000000004ED0000-0x0000000004F62000-memory.dmp

memory/1300-5-0x0000000004E70000-0x0000000004E7A000-memory.dmp

memory/1300-6-0x00000000050C0000-0x0000000005116000-memory.dmp

memory/1300-7-0x0000000074A10000-0x00000000751C0000-memory.dmp

memory/1300-8-0x00000000052C0000-0x00000000052CA000-memory.dmp

memory/1300-9-0x0000000074A1E000-0x0000000074A1F000-memory.dmp

memory/1300-10-0x0000000074A10000-0x00000000751C0000-memory.dmp

memory/1300-11-0x0000000000CE0000-0x0000000000D4C000-memory.dmp

memory/3976-12-0x0000000000400000-0x000000000042E000-memory.dmp

memory/1300-14-0x0000000074A10000-0x00000000751C0000-memory.dmp

memory/3976-15-0x0000000001BC0000-0x0000000001F0A000-memory.dmp