Malware Analysis Report

2025-08-05 16:22

Sample ID 231023-wa899sbg5s
Target NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe
SHA256 a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8
Tags
formbook hinf 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

a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8

Threat Level: Known bad

The file NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe was found to be: Known bad.

Malicious Activity Summary

formbook hinf rat spyware stealer trojan

Formbook

Formbook payload

Suspicious use of SetThreadContext

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-10-23 17:44

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-10-23 17:44

Reported

2023-10-23 17:54

Platform

win7-20231020-en

Max time kernel

120s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_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.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1212 wrote to memory of 2768 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe
PID 1212 wrote to memory of 2768 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe
PID 1212 wrote to memory of 2768 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe
PID 1212 wrote to memory of 2768 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe
PID 1212 wrote to memory of 2768 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe
PID 1212 wrote to memory of 2768 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe
PID 1212 wrote to memory of 2768 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe

Processes

C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe"

C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe"

Network

N/A

Files

memory/1212-0-0x0000000000990000-0x0000000000A2A000-memory.dmp

memory/1212-1-0x0000000074C30000-0x000000007531E000-memory.dmp

memory/1212-2-0x00000000004C0000-0x0000000000500000-memory.dmp

memory/1212-3-0x00000000004A0000-0x00000000004B8000-memory.dmp

memory/1212-4-0x0000000074C30000-0x000000007531E000-memory.dmp

memory/1212-5-0x00000000004C0000-0x0000000000500000-memory.dmp

memory/1212-6-0x0000000000470000-0x0000000000480000-memory.dmp

memory/1212-7-0x0000000005090000-0x00000000050FE000-memory.dmp

memory/2768-8-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2768-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2768-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2768-9-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1212-13-0x0000000074C30000-0x000000007531E000-memory.dmp

memory/2768-14-0x0000000000A30000-0x0000000000D33000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-10-23 17:44

Reported

2023-10-23 17:51

Platform

win10v2004-20231023-en

Max time kernel

136s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_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.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1108 wrote to memory of 2892 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe
PID 1108 wrote to memory of 2892 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe
PID 1108 wrote to memory of 2892 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe
PID 1108 wrote to memory of 3540 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe
PID 1108 wrote to memory of 3540 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe
PID 1108 wrote to memory of 3540 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe
PID 1108 wrote to memory of 3540 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe
PID 1108 wrote to memory of 3540 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe
PID 1108 wrote to memory of 3540 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe

Processes

C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe"

C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe"

C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.a40c92a00ca0f04cd04883d555859cf2c8e884a01329defd3631c7cc61204ff8exe_JC.exe"

Network

Country Destination Domain Proto
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 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 29.81.57.23.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 84.65.42.20.in-addr.arpa udp

Files

memory/1108-0-0x0000000074D30000-0x00000000754E0000-memory.dmp

memory/1108-1-0x0000000000920000-0x00000000009BA000-memory.dmp

memory/1108-2-0x0000000005950000-0x0000000005EF4000-memory.dmp

memory/1108-3-0x00000000053A0000-0x0000000005432000-memory.dmp

memory/1108-4-0x0000000074D30000-0x00000000754E0000-memory.dmp

memory/1108-5-0x0000000005560000-0x0000000005570000-memory.dmp

memory/1108-6-0x0000000005450000-0x000000000545A000-memory.dmp

memory/1108-7-0x0000000005660000-0x00000000056FC000-memory.dmp

memory/1108-8-0x0000000005560000-0x0000000005570000-memory.dmp

memory/1108-9-0x0000000007060000-0x0000000007078000-memory.dmp

memory/1108-10-0x0000000000EB0000-0x0000000000EC0000-memory.dmp

memory/1108-11-0x0000000006780000-0x00000000067EE000-memory.dmp

memory/3540-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/3540-13-0x00000000017D0000-0x0000000001B1A000-memory.dmp

memory/1108-15-0x0000000074D30000-0x00000000754E0000-memory.dmp