Malware Analysis Report

2025-08-05 16:19

Sample ID 231023-x94z9sfd77
Target NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe
SHA256 f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273
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

f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273

Threat Level: Known bad

The file NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_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 19:34

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-10-23 19:34

Reported

2023-10-23 19:40

Platform

win7-20231020-en

Max time kernel

118s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_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.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1944 wrote to memory of 2816 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe
PID 1944 wrote to memory of 2816 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe
PID 1944 wrote to memory of 2816 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe
PID 1944 wrote to memory of 2816 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe
PID 1944 wrote to memory of 2816 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe
PID 1944 wrote to memory of 2816 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe
PID 1944 wrote to memory of 2816 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe

Processes

C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe"

C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe"

Network

N/A

Files

memory/1944-1-0x00000000743D0000-0x0000000074ABE000-memory.dmp

memory/1944-0-0x0000000000DD0000-0x0000000000E66000-memory.dmp

memory/1944-2-0x0000000000390000-0x00000000003D0000-memory.dmp

memory/1944-3-0x0000000000360000-0x0000000000378000-memory.dmp

memory/1944-4-0x00000000743D0000-0x0000000074ABE000-memory.dmp

memory/1944-5-0x0000000000390000-0x00000000003D0000-memory.dmp

memory/1944-6-0x0000000000300000-0x0000000000310000-memory.dmp

memory/1944-7-0x0000000005700000-0x000000000576E000-memory.dmp

memory/2816-8-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2816-9-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2816-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2816-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/1944-13-0x00000000743D0000-0x0000000074ABE000-memory.dmp

memory/2816-14-0x0000000000850000-0x0000000000B53000-memory.dmp

memory/2816-15-0x0000000000850000-0x0000000000B53000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-10-23 19:34

Reported

2023-10-23 19:40

Platform

win10v2004-20231023-en

Max time kernel

138s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_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.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4084 wrote to memory of 3476 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe
PID 4084 wrote to memory of 3476 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe
PID 4084 wrote to memory of 3476 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe
PID 4084 wrote to memory of 3476 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe
PID 4084 wrote to memory of 3476 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe
PID 4084 wrote to memory of 3476 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe

Processes

C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe"

C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.f73717ede50c0ae3573c34a1cca093a90b6e52265fd26b8bfbbfee5b84d57273exe_JC.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 90.16.208.104.in-addr.arpa udp

Files

memory/4084-1-0x0000000000F60000-0x0000000000FF6000-memory.dmp

memory/4084-0-0x0000000074A60000-0x0000000075210000-memory.dmp

memory/4084-2-0x0000000005E90000-0x0000000006434000-memory.dmp

memory/4084-3-0x00000000059D0000-0x0000000005A62000-memory.dmp

memory/4084-4-0x0000000005C00000-0x0000000005C10000-memory.dmp

memory/4084-5-0x0000000005B80000-0x0000000005B8A000-memory.dmp

memory/4084-6-0x0000000005CB0000-0x0000000005D4C000-memory.dmp

memory/4084-7-0x0000000005C60000-0x0000000005C78000-memory.dmp

memory/4084-8-0x0000000074A60000-0x0000000075210000-memory.dmp

memory/4084-9-0x0000000005C00000-0x0000000005C10000-memory.dmp

memory/4084-10-0x0000000005C10000-0x0000000005C20000-memory.dmp

memory/4084-11-0x00000000072D0000-0x000000000733E000-memory.dmp

memory/3476-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/4084-14-0x0000000074A60000-0x0000000075210000-memory.dmp

memory/3476-15-0x0000000001600000-0x000000000194A000-memory.dmp