Malware Analysis Report

2025-08-05 16:22

Sample ID 231023-ycw4tsdg8x
Target NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe
SHA256 fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73
Tags
formbook ls02 rat spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73

Threat Level: Known bad

The file NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe was found to be: Known bad.

Malicious Activity Summary

formbook ls02 rat spyware stealer trojan

Formbook

Formbook payload

Suspicious use of SetThreadContext

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-10-23 19:38

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-10-23 19:38

Reported

2023-10-23 19:45

Platform

win7-20231020-en

Max time kernel

120s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe"

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2888 wrote to memory of 2844 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe
PID 2888 wrote to memory of 2844 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe
PID 2888 wrote to memory of 2844 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe
PID 2888 wrote to memory of 2844 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe
PID 2888 wrote to memory of 2844 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe
PID 2888 wrote to memory of 2844 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe
PID 2888 wrote to memory of 2844 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe

Processes

C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe"

C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe"

Network

N/A

Files

memory/2888-0-0x00000000011D0000-0x0000000001274000-memory.dmp

memory/2888-1-0x0000000074EA0000-0x000000007558E000-memory.dmp

memory/2888-2-0x0000000000CA0000-0x0000000000CE0000-memory.dmp

memory/2888-3-0x0000000000B80000-0x0000000000B98000-memory.dmp

memory/2888-4-0x0000000074EA0000-0x000000007558E000-memory.dmp

memory/2888-5-0x0000000000CA0000-0x0000000000CE0000-memory.dmp

memory/2888-6-0x0000000000380000-0x0000000000390000-memory.dmp

memory/2888-7-0x0000000004FD0000-0x000000000503E000-memory.dmp

memory/2844-8-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2844-10-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2844-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2844-14-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2888-15-0x0000000074EA0000-0x000000007558E000-memory.dmp

memory/2844-16-0x0000000000910000-0x0000000000C13000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-10-23 19:38

Reported

2023-10-23 19:44

Platform

win10v2004-20231020-en

Max time kernel

92s

Max time network

159s

Command Line

"C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe"

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2256 wrote to memory of 3356 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe
PID 2256 wrote to memory of 3356 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe
PID 2256 wrote to memory of 3356 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe
PID 2256 wrote to memory of 3356 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe
PID 2256 wrote to memory of 3356 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe
PID 2256 wrote to memory of 3356 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe

Processes

C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe"

C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.fd8ec7e66dab730de6d7a96168974b95f2e9ba43c0c05b5fac55b3abc8a52d73exe_JC.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 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 1.202.248.87.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 29.81.57.23.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 254.5.248.8.in-addr.arpa udp

Files

memory/2256-0-0x00000000006C0000-0x0000000000764000-memory.dmp

memory/2256-1-0x0000000074AA0000-0x0000000075250000-memory.dmp

memory/2256-2-0x0000000005680000-0x0000000005C24000-memory.dmp

memory/2256-3-0x0000000005170000-0x0000000005202000-memory.dmp

memory/2256-4-0x00000000050D0000-0x00000000050E0000-memory.dmp

memory/2256-5-0x0000000005300000-0x000000000530A000-memory.dmp

memory/2256-6-0x0000000005660000-0x0000000005678000-memory.dmp

memory/2256-7-0x0000000074AA0000-0x0000000075250000-memory.dmp

memory/2256-8-0x00000000050D0000-0x00000000050E0000-memory.dmp

memory/2256-9-0x00000000065B0000-0x00000000065C0000-memory.dmp

memory/2256-10-0x0000000007BE0000-0x0000000007C4E000-memory.dmp

memory/2256-11-0x000000000A320000-0x000000000A3BC000-memory.dmp

memory/3356-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2256-14-0x0000000074AA0000-0x0000000075250000-memory.dmp

memory/3356-15-0x00000000010C0000-0x000000000140A000-memory.dmp