Malware Analysis Report

2025-01-18 12:25

Sample ID 240830-2g3nyszhmm
Target 78a84bac46aef38e745ddf44119e2d8207e35a1600eb35a9b22c4cc69c8c3e6c
SHA256 78a84bac46aef38e745ddf44119e2d8207e35a1600eb35a9b22c4cc69c8c3e6c
Tags
formbook pe discovery rat spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

78a84bac46aef38e745ddf44119e2d8207e35a1600eb35a9b22c4cc69c8c3e6c

Threat Level: Known bad

The file 78a84bac46aef38e745ddf44119e2d8207e35a1600eb35a9b22c4cc69c8c3e6c was found to be: Known bad.

Malicious Activity Summary

formbook pe discovery rat spyware stealer trojan

Formbook

Formbook payload

Drops startup file

Suspicious use of SetThreadContext

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-30 22:34

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-30 22:34

Reported

2024-08-30 22:36

Platform

win7-20240729-en

Max time kernel

117s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe"

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

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

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Ungirt.vbe C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2544 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe
PID 2544 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe
PID 2544 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe
PID 2544 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe
PID 2544 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe
PID 2544 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe
PID 2544 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe
PID 2544 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe

Processes

C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe

"C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe"

C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe

"C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe"

Network

N/A

Files

memory/2504-4-0x0000000000400000-0x000000000042A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-30 22:34

Reported

2024-08-30 22:36

Platform

win10v2004-20240802-en

Max time kernel

130s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe"

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

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

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Ungirt.vbe C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1080 wrote to memory of 1684 N/A C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe
PID 1080 wrote to memory of 1684 N/A C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe
PID 1080 wrote to memory of 1684 N/A C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe
PID 1080 wrote to memory of 1684 N/A C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe
PID 1080 wrote to memory of 1684 N/A C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe
PID 1080 wrote to memory of 1684 N/A C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe
PID 1080 wrote to memory of 1684 N/A C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe

Processes

C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe

"C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe"

C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe

"C:\Users\Admin\AppData\Local\Temp\299dd5c3192a96d29e2eacb650c5235a4aadc3e7ec921e89940fb77519700d66.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 44.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp

Files

memory/1080-6-0x0000000077261000-0x0000000077381000-memory.dmp

memory/1684-5-0x0000000000400000-0x000000000042A000-memory.dmp

memory/1080-2-0x0000000077261000-0x0000000077381000-memory.dmp