Malware Analysis Report

2025-08-05 16:19

Sample ID 231023-wv3m8aea39
Target NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe
SHA256 cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196
Tags
formbook a9h3 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

cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196

Threat Level: Known bad

The file NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe was found to be: Known bad.

Malicious Activity Summary

formbook a9h3 rat spyware stealer trojan

Formbook

Formbook payload

Suspicious use of SetThreadContext

Unsigned PE

Program crash

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-10-23 18:15

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-10-23 18:15

Reported

2023-10-23 18:27

Platform

win7-20231023-en

Max time kernel

119s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2196 -s 668

Network

N/A

Files

memory/2196-0-0x0000000000200000-0x000000000029A000-memory.dmp

memory/2196-1-0x00000000746C0000-0x0000000074DAE000-memory.dmp

memory/2196-2-0x0000000004340000-0x0000000004380000-memory.dmp

memory/2196-3-0x0000000000380000-0x0000000000392000-memory.dmp

memory/2196-4-0x00000000746C0000-0x0000000074DAE000-memory.dmp

memory/2196-5-0x0000000004340000-0x0000000004380000-memory.dmp

memory/2196-6-0x00000000003B0000-0x00000000003C0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-10-23 18:15

Reported

2023-10-23 18:20

Platform

win10v2004-20231023-en

Max time kernel

79s

Max time network

133s

Command Line

"C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_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.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3260 wrote to memory of 4296 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe
PID 3260 wrote to memory of 4296 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe
PID 3260 wrote to memory of 4296 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe
PID 3260 wrote to memory of 3812 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe
PID 3260 wrote to memory of 3812 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe
PID 3260 wrote to memory of 3812 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe
PID 3260 wrote to memory of 3812 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe
PID 3260 wrote to memory of 3812 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe
PID 3260 wrote to memory of 3812 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe

Processes

C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe"

C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe"

C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.cab1239af46720e7dea7b06c3c9c6e3fc7928445e84db2636fb5427ae1ef4196exe_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 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 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 8.3.197.209.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/3260-0-0x0000000074AD0000-0x0000000075280000-memory.dmp

memory/3260-1-0x0000000000100000-0x000000000019A000-memory.dmp

memory/3260-2-0x00000000050C0000-0x0000000005664000-memory.dmp

memory/3260-3-0x0000000004BB0000-0x0000000004C42000-memory.dmp

memory/3260-4-0x0000000004E00000-0x0000000004E10000-memory.dmp

memory/3260-5-0x0000000004B90000-0x0000000004B9A000-memory.dmp

memory/3260-6-0x0000000074AD0000-0x0000000075280000-memory.dmp

memory/3260-7-0x0000000006480000-0x0000000006492000-memory.dmp

memory/3260-8-0x0000000004E00000-0x0000000004E10000-memory.dmp

memory/3260-9-0x0000000005E80000-0x0000000005E90000-memory.dmp

memory/3260-10-0x0000000006110000-0x000000000617E000-memory.dmp

memory/3260-11-0x000000000A210000-0x000000000A2AC000-memory.dmp

memory/3812-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/3260-15-0x0000000074AD0000-0x0000000075280000-memory.dmp

memory/3812-14-0x00000000017A0000-0x0000000001AEA000-memory.dmp