Malware Analysis Report

2024-10-19 09:27

Sample ID 240712-g6ecfasakq
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

Blocklisted process makes network request

Deletes itself

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of UnmapMainImage

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-07-12 06:24

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-12 06:24

Reported

2024-07-12 06:27

Platform

win7-20240708-en

Max time kernel

148s

Max time network

16s

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 1400 set thread context of 2948 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 2948 set thread context of 1268 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Windows\Explorer.EXE
PID 2216 set thread context of 1268 N/A C:\Windows\SysWOW64\cscript.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\cscript.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1400 wrote to memory of 2948 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 1400 wrote to memory of 2948 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 1400 wrote to memory of 2948 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 1400 wrote to memory of 2948 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 1400 wrote to memory of 2948 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 1400 wrote to memory of 2948 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 1400 wrote to memory of 2948 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 1268 wrote to memory of 2216 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\cscript.exe
PID 1268 wrote to memory of 2216 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\cscript.exe
PID 1268 wrote to memory of 2216 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\cscript.exe
PID 1268 wrote to memory of 2216 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\cscript.exe
PID 2216 wrote to memory of 2976 N/A C:\Windows\SysWOW64\cscript.exe C:\Windows\SysWOW64\cmd.exe
PID 2216 wrote to memory of 2976 N/A C:\Windows\SysWOW64\cscript.exe C:\Windows\SysWOW64\cmd.exe
PID 2216 wrote to memory of 2976 N/A C:\Windows\SysWOW64\cscript.exe C:\Windows\SysWOW64\cmd.exe
PID 2216 wrote to memory of 2976 N/A C:\Windows\SysWOW64\cscript.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\cscript.exe

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

C:\Windows\SysWOW64\cmd.exe

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

Network

N/A

Files

memory/1400-0-0x000000007499E000-0x000000007499F000-memory.dmp

memory/1400-1-0x0000000001020000-0x00000000010D0000-memory.dmp

memory/1400-2-0x0000000074990000-0x000000007507E000-memory.dmp

memory/1400-3-0x0000000000880000-0x0000000000892000-memory.dmp

memory/1400-4-0x00000000008A0000-0x00000000008A8000-memory.dmp

memory/1400-5-0x00000000008B0000-0x00000000008BE000-memory.dmp

memory/1400-6-0x0000000004F40000-0x0000000004FB6000-memory.dmp

memory/2948-7-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2948-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2948-11-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2948-8-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1400-12-0x0000000074990000-0x000000007507E000-memory.dmp

memory/2948-13-0x0000000000A20000-0x0000000000D23000-memory.dmp

memory/2948-17-0x00000000002D0000-0x00000000002E4000-memory.dmp

memory/2948-16-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1268-15-0x0000000000010000-0x0000000000020000-memory.dmp

memory/1268-18-0x0000000007210000-0x000000000734B000-memory.dmp

memory/2216-20-0x0000000000E00000-0x0000000000E22000-memory.dmp

memory/2216-19-0x0000000000E00000-0x0000000000E22000-memory.dmp

memory/2216-21-0x0000000000070000-0x000000000009F000-memory.dmp

memory/1268-23-0x0000000007210000-0x000000000734B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-12 06:24

Reported

2024-07-12 06:27

Platform

win10v2004-20240709-en

Max time kernel

149s

Max time network

143s

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

Blocklisted process makes network request

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4004 set thread context of 3252 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 3252 set thread context of 3448 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Windows\Explorer.EXE
PID 3920 set thread context of 3448 N/A C:\Windows\SysWOW64\wscript.exe C:\Windows\Explorer.EXE

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
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

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 4004 wrote to memory of 3252 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 4004 wrote to memory of 3252 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 4004 wrote to memory of 3252 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 4004 wrote to memory of 3252 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 4004 wrote to memory of 3252 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 4004 wrote to memory of 3252 N/A C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe C:\Users\Admin\AppData\Local\Temp\vNrcPvMYLZmn2cc.exe
PID 3448 wrote to memory of 3920 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\wscript.exe
PID 3448 wrote to memory of 3920 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\wscript.exe
PID 3448 wrote to memory of 3920 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\wscript.exe
PID 3920 wrote to memory of 4808 N/A C:\Windows\SysWOW64\wscript.exe C:\Windows\SysWOW64\cmd.exe
PID 3920 wrote to memory of 4808 N/A C:\Windows\SysWOW64\wscript.exe C:\Windows\SysWOW64\cmd.exe
PID 3920 wrote to memory of 4808 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\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 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 www.realtors.biz udp
US 76.223.54.146:80 www.realtors.biz tcp
US 8.8.8.8:53 146.54.223.76.in-addr.arpa udp
US 8.8.8.8:53 www.sainikshiksha.com udp
IN 103.191.209.34:80 www.sainikshiksha.com tcp
US 8.8.8.8:53 34.209.191.103.in-addr.arpa udp
US 8.8.8.8:53 www.owl-protect.com udp
DE 217.160.0.231:80 www.owl-protect.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 www.owl-protect.com udp
DE 217.160.0.231:80 www.owl-protect.com tcp
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.bjcysadz.xyz udp
HK 8.218.194.139:80 www.bjcysadz.xyz tcp
US 8.8.8.8:53 139.194.218.8.in-addr.arpa udp
US 8.8.8.8:53 www.yc85w.top udp
HK 38.181.21.82:80 www.yc85w.top tcp
US 8.8.8.8:53 82.21.181.38.in-addr.arpa udp

Files

memory/4004-0-0x000000007443E000-0x000000007443F000-memory.dmp

memory/4004-1-0x0000000000E00000-0x0000000000EB0000-memory.dmp

memory/4004-2-0x0000000005F30000-0x00000000064D4000-memory.dmp

memory/4004-3-0x0000000005880000-0x0000000005912000-memory.dmp

memory/4004-5-0x0000000005950000-0x000000000595A000-memory.dmp

memory/4004-4-0x0000000074430000-0x0000000074BE0000-memory.dmp

memory/4004-6-0x0000000005CB0000-0x0000000005CC2000-memory.dmp

memory/4004-7-0x0000000006AE0000-0x0000000006AE8000-memory.dmp

memory/4004-8-0x0000000006AF0000-0x0000000006AFE000-memory.dmp

memory/4004-9-0x0000000006B10000-0x0000000006B86000-memory.dmp

memory/4004-10-0x0000000008450000-0x00000000084EC000-memory.dmp

memory/3252-11-0x0000000000400000-0x000000000042F000-memory.dmp

memory/4004-13-0x0000000074430000-0x0000000074BE0000-memory.dmp

memory/3252-14-0x0000000000FA0000-0x00000000012EA000-memory.dmp

memory/3252-17-0x00000000009D0000-0x00000000009E4000-memory.dmp

memory/3252-16-0x0000000000400000-0x000000000042F000-memory.dmp

memory/3448-18-0x00000000034C0000-0x0000000003594000-memory.dmp

memory/3920-19-0x0000000000150000-0x0000000000177000-memory.dmp

memory/3920-20-0x0000000000150000-0x0000000000177000-memory.dmp

memory/3920-21-0x0000000000620000-0x000000000064F000-memory.dmp

memory/3448-23-0x00000000034C0000-0x0000000003594000-memory.dmp

memory/3448-25-0x00000000092E0000-0x0000000009444000-memory.dmp

memory/3448-26-0x00000000092E0000-0x0000000009444000-memory.dmp

memory/3448-29-0x00000000092E0000-0x0000000009444000-memory.dmp