Malware Analysis Report

2024-10-19 09:28

Sample ID 240712-g9glzavapf
Target vNrcPvMYLZmn2cc.exe
SHA256 0b2881dffc8cd0c36764d955f9478964c95822672da0f5ba29a5af5c16059b16
Tags
formbook mc10 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

0b2881dffc8cd0c36764d955f9478964c95822672da0f5ba29a5af5c16059b16

Threat Level: Known bad

The file vNrcPvMYLZmn2cc.exe was found to be: Known bad.

Malicious Activity Summary

formbook mc10 rat spyware stealer trojan

Formbook

Formbook payload

Deletes itself

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of UnmapMainImage

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Modifies registry class

Suspicious behavior: MapViewOfSection

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-07-12 06:30

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-12 06:30

Reported

2024-07-12 06:32

Platform

win7-20240708-en

Max time kernel

147s

Max time network

19s

Command Line

C:\Windows\Explorer.EXE

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

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

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1328 set thread context of 2180 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 2180 set thread context of 1188 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Windows\Explorer.EXE
PID 2768 set thread context of 1188 N/A C:\Windows\SysWOW64\systray.exe C:\Windows\Explorer.EXE

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\systray.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1328 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 1328 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 1328 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 1328 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 1328 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 1328 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 1328 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 1188 wrote to memory of 2768 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\systray.exe
PID 1188 wrote to memory of 2768 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\systray.exe
PID 1188 wrote to memory of 2768 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\systray.exe
PID 1188 wrote to memory of 2768 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\systray.exe
PID 2768 wrote to memory of 2820 N/A C:\Windows\SysWOW64\systray.exe C:\Windows\SysWOW64\cmd.exe
PID 2768 wrote to memory of 2820 N/A C:\Windows\SysWOW64\systray.exe C:\Windows\SysWOW64\cmd.exe
PID 2768 wrote to memory of 2820 N/A C:\Windows\SysWOW64\systray.exe C:\Windows\SysWOW64\cmd.exe
PID 2768 wrote to memory of 2820 N/A C:\Windows\SysWOW64\systray.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe

"C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe"

C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe

"C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe"

C:\Windows\SysWOW64\systray.exe

"C:\Windows\SysWOW64\systray.exe"

C:\Windows\SysWOW64\cmd.exe

/c del "C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe"

Network

N/A

Files

memory/1328-0-0x00000000743CE000-0x00000000743CF000-memory.dmp

memory/1328-1-0x00000000008E0000-0x0000000000990000-memory.dmp

memory/1328-2-0x00000000743C0000-0x0000000074AAE000-memory.dmp

memory/1328-3-0x0000000000470000-0x0000000000482000-memory.dmp

memory/1328-4-0x0000000000680000-0x0000000000688000-memory.dmp

memory/1328-5-0x0000000000690000-0x000000000069E000-memory.dmp

memory/1328-6-0x0000000004A60000-0x0000000004AD6000-memory.dmp

memory/2180-7-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2180-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2180-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2180-9-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1328-14-0x00000000743C0000-0x0000000074AAE000-memory.dmp

memory/2180-15-0x0000000000C60000-0x0000000000F63000-memory.dmp

memory/2180-19-0x0000000000280000-0x0000000000294000-memory.dmp

memory/2180-18-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1188-20-0x0000000006570000-0x0000000006693000-memory.dmp

memory/2768-21-0x00000000004A0000-0x00000000004A5000-memory.dmp

memory/2768-23-0x00000000004A0000-0x00000000004A5000-memory.dmp

memory/2768-24-0x0000000000080000-0x00000000000AF000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-12 06:30

Reported

2024-07-12 06:32

Platform

win10v2004-20240709-en

Max time kernel

150s

Max time network

154s

Command Line

C:\Windows\Explorer.EXE

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1832 set thread context of 2064 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 2064 set thread context of 3456 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Windows\Explorer.EXE
PID 2868 set thread context of 3456 N/A C:\Windows\SysWOW64\wscript.exe C:\Windows\Explorer.EXE

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ C:\Windows\Explorer.EXE N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\wscript.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Windows\Explorer.EXE N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1832 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 1832 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 1832 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 1832 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 1832 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 1832 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 3456 wrote to memory of 2868 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\wscript.exe
PID 3456 wrote to memory of 2868 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\wscript.exe
PID 3456 wrote to memory of 2868 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\wscript.exe
PID 2868 wrote to memory of 1768 N/A C:\Windows\SysWOW64\wscript.exe C:\Windows\SysWOW64\cmd.exe
PID 2868 wrote to memory of 1768 N/A C:\Windows\SysWOW64\wscript.exe C:\Windows\SysWOW64\cmd.exe
PID 2868 wrote to memory of 1768 N/A C:\Windows\SysWOW64\wscript.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe

"C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe"

C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe

"C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe"

C:\Windows\SysWOW64\autofmt.exe

"C:\Windows\SysWOW64\autofmt.exe"

C:\Windows\SysWOW64\wscript.exe

"C:\Windows\SysWOW64\wscript.exe"

C:\Windows\SysWOW64\cmd.exe

/c del "C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 147.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 www.motolimod.com udp
DE 3.64.163.50:80 www.motolimod.com tcp
US 8.8.8.8:53 50.163.64.3.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 www.allmyabilities.com udp
US 198.49.23.145:80 www.allmyabilities.com tcp
US 8.8.8.8:53 145.23.49.198.in-addr.arpa udp
US 8.8.8.8:53 www.hg44a.com udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 www.767jogo.com udp
TW 210.242.167.101:80 www.767jogo.com tcp
US 8.8.8.8:53 101.167.242.210.in-addr.arpa udp
US 8.8.8.8:53 www.bonjourmignon.com udp
KR 112.175.59.169:80 www.bonjourmignon.com tcp
US 8.8.8.8:53 169.59.175.112.in-addr.arpa udp
US 8.8.8.8:53 www.xpanas.black udp
US 199.59.243.226:80 www.xpanas.black tcp
US 8.8.8.8:53 226.243.59.199.in-addr.arpa udp

Files

memory/1832-0-0x00000000749CE000-0x00000000749CF000-memory.dmp

memory/1832-1-0x0000000000880000-0x0000000000930000-memory.dmp

memory/1832-2-0x00000000057C0000-0x0000000005D64000-memory.dmp

memory/1832-3-0x0000000005310000-0x00000000053A2000-memory.dmp

memory/1832-4-0x00000000053D0000-0x00000000053DA000-memory.dmp

memory/1832-5-0x00000000749C0000-0x0000000075170000-memory.dmp

memory/1832-6-0x0000000006DA0000-0x0000000006DB2000-memory.dmp

memory/1832-7-0x0000000006480000-0x0000000006488000-memory.dmp

memory/1832-8-0x0000000006490000-0x000000000649E000-memory.dmp

memory/1832-9-0x00000000064B0000-0x0000000006526000-memory.dmp

memory/1832-10-0x00000000091A0000-0x000000000923C000-memory.dmp

memory/2064-11-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1832-13-0x00000000749C0000-0x0000000075170000-memory.dmp

memory/2064-14-0x0000000001520000-0x000000000186A000-memory.dmp

memory/2064-16-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2064-17-0x00000000019A0000-0x00000000019B4000-memory.dmp

memory/3456-18-0x00000000027F0000-0x00000000028EF000-memory.dmp

memory/2868-19-0x0000000000B10000-0x0000000000B37000-memory.dmp

memory/2868-20-0x0000000000B10000-0x0000000000B37000-memory.dmp

memory/2868-21-0x00000000011C0000-0x00000000011EF000-memory.dmp

memory/3456-23-0x00000000027F0000-0x00000000028EF000-memory.dmp

memory/3456-25-0x0000000008280000-0x00000000083BF000-memory.dmp

memory/3456-27-0x0000000008280000-0x00000000083BF000-memory.dmp

memory/3456-30-0x0000000008280000-0x00000000083BF000-memory.dmp