Malware Analysis Report

2025-08-05 16:19

Sample ID 231023-t8hh4acd87
Target NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe
SHA256 2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2a
Tags
formbook cy12 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

2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2a

Threat Level: Known bad

The file NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe was found to be: Known bad.

Malicious Activity Summary

formbook cy12 rat spyware stealer trojan

Formbook

Formbook payload

Suspicious use of SetThreadContext

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-10-23 16:43

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-10-23 16:43

Reported

2023-10-23 16:53

Platform

win7-20231023-en

Max time kernel

122s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_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 AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2380 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe
PID 2380 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe
PID 2380 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe
PID 2380 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe
PID 2380 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe
PID 2380 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe
PID 2380 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe

Processes

C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe"

C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe"

Network

N/A

Files

memory/2380-0-0x0000000000B80000-0x0000000000C18000-memory.dmp

memory/2380-1-0x0000000073FC0000-0x00000000746AE000-memory.dmp

memory/2380-2-0x0000000004D10000-0x0000000004D50000-memory.dmp

memory/2380-3-0x00000000006F0000-0x0000000000708000-memory.dmp

memory/2380-4-0x0000000073FC0000-0x00000000746AE000-memory.dmp

memory/2380-5-0x0000000004D10000-0x0000000004D50000-memory.dmp

memory/2380-6-0x0000000000440000-0x0000000000450000-memory.dmp

memory/2380-7-0x0000000005800000-0x000000000586E000-memory.dmp

memory/2712-8-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2712-10-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2712-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2712-14-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2380-15-0x0000000073FC0000-0x00000000746AE000-memory.dmp

memory/2712-16-0x0000000000C20000-0x0000000000F23000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-10-23 16:43

Reported

2023-10-23 16:49

Platform

win10v2004-20231020-en

Max time kernel

141s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_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 AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 5028 wrote to memory of 1776 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe
PID 5028 wrote to memory of 1776 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe
PID 5028 wrote to memory of 1776 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe
PID 5028 wrote to memory of 1776 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe
PID 5028 wrote to memory of 1776 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe
PID 5028 wrote to memory of 1776 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe

Processes

C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe"

C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.2f717becc408420e2dfdcac5643bcf420ce2a8e3e28320c23b3db7a489235f2aexe_JC.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
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 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 126.179.238.8.in-addr.arpa udp
US 8.8.8.8:53 254.23.238.8.in-addr.arpa udp
US 52.111.227.11:443 tcp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 8.3.197.209.in-addr.arpa udp
US 8.8.8.8:53 67.112.168.52.in-addr.arpa udp

Files

memory/5028-0-0x0000000074570000-0x0000000074D20000-memory.dmp

memory/5028-1-0x0000000000970000-0x0000000000A08000-memory.dmp

memory/5028-2-0x0000000005900000-0x0000000005EA4000-memory.dmp

memory/5028-3-0x00000000053F0000-0x0000000005482000-memory.dmp

memory/5028-4-0x0000000005380000-0x0000000005390000-memory.dmp

memory/5028-5-0x00000000055A0000-0x00000000055AA000-memory.dmp

memory/5028-6-0x0000000005690000-0x000000000572C000-memory.dmp

memory/5028-7-0x00000000069A0000-0x00000000069B8000-memory.dmp

memory/5028-8-0x0000000074570000-0x0000000074D20000-memory.dmp

memory/5028-9-0x0000000005380000-0x0000000005390000-memory.dmp

memory/5028-10-0x0000000006C40000-0x0000000006C50000-memory.dmp

memory/5028-11-0x0000000006FF0000-0x000000000705E000-memory.dmp

memory/1776-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/5028-14-0x0000000074570000-0x0000000074D20000-memory.dmp

memory/1776-15-0x0000000001160000-0x00000000014AA000-memory.dmp