Malware Analysis Report

2025-01-18 12:40

Sample ID 240402-1xljyaeh96
Target 984eae99ede6562cf394483a1600c4a3_JaffaCakes118
SHA256 e827c29f504045d8e6d8a2eb622a571f83e1bf9afaa8f1b839af76f457b45135
Tags
formbook r4gk 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

e827c29f504045d8e6d8a2eb622a571f83e1bf9afaa8f1b839af76f457b45135

Threat Level: Known bad

The file 984eae99ede6562cf394483a1600c4a3_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

formbook r4gk rat spyware stealer trojan

Formbook

Formbook payload

Checks computer location settings

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Creates scheduled task(s)

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-02 22:01

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-02 22:01

Reported

2024-04-02 22:04

Platform

win7-20240215-en

Max time kernel

121s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe"

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

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

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2916 wrote to memory of 2452 N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2916 wrote to memory of 2452 N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2916 wrote to memory of 2452 N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2916 wrote to memory of 2452 N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2916 wrote to memory of 2152 N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe
PID 2916 wrote to memory of 2152 N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe
PID 2916 wrote to memory of 2152 N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe
PID 2916 wrote to memory of 2152 N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe
PID 2916 wrote to memory of 2152 N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe
PID 2916 wrote to memory of 2152 N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe
PID 2916 wrote to memory of 2152 N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kHyhrJVfXUoPwc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD375.tmp"

C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe"

Network

N/A

Files

memory/2916-0-0x0000000000AD0000-0x0000000000B3E000-memory.dmp

memory/2916-1-0x0000000074940000-0x000000007502E000-memory.dmp

memory/2916-2-0x00000000042A0000-0x00000000042E0000-memory.dmp

memory/2916-3-0x0000000000A90000-0x0000000000A9E000-memory.dmp

memory/2916-4-0x0000000074940000-0x000000007502E000-memory.dmp

memory/2916-5-0x00000000042A0000-0x00000000042E0000-memory.dmp

memory/2916-6-0x0000000004E30000-0x0000000004E88000-memory.dmp

memory/2152-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2152-14-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2152-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2152-18-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2152-19-0x0000000000B40000-0x0000000000E43000-memory.dmp

memory/2916-20-0x0000000074940000-0x000000007502E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-02 22:01

Reported

2024-04-02 22:04

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe"

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3600 wrote to memory of 4848 N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 3600 wrote to memory of 4848 N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 3600 wrote to memory of 4848 N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 3600 wrote to memory of 1868 N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe
PID 3600 wrote to memory of 1868 N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe
PID 3600 wrote to memory of 1868 N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe
PID 3600 wrote to memory of 1868 N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe
PID 3600 wrote to memory of 1868 N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe
PID 3600 wrote to memory of 1868 N/A C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kHyhrJVfXUoPwc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBAF3.tmp"

C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\984eae99ede6562cf394483a1600c4a3_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 78.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 99.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/3600-0-0x0000000000560000-0x00000000005CE000-memory.dmp

memory/3600-1-0x0000000074BC0000-0x0000000075370000-memory.dmp

memory/3600-2-0x00000000054F0000-0x0000000005A94000-memory.dmp

memory/3600-3-0x0000000004FE0000-0x0000000005072000-memory.dmp

memory/3600-4-0x0000000005240000-0x0000000005250000-memory.dmp

memory/3600-5-0x0000000004F90000-0x0000000004F9A000-memory.dmp

memory/3600-6-0x00000000062A0000-0x000000000633C000-memory.dmp

memory/3600-7-0x00000000053C0000-0x00000000053CE000-memory.dmp

memory/3600-8-0x0000000074BC0000-0x0000000075370000-memory.dmp

memory/3600-9-0x0000000005240000-0x0000000005250000-memory.dmp

memory/3600-10-0x0000000006770000-0x00000000067C8000-memory.dmp

memory/1868-16-0x0000000000400000-0x000000000042F000-memory.dmp

memory/3600-18-0x0000000074BC0000-0x0000000075370000-memory.dmp

memory/1868-19-0x0000000001630000-0x000000000197A000-memory.dmp