Malware Analysis Report

2025-01-18 12:31

Sample ID 240831-s7mkzssaqb
Target fb90829fafd93c8e83d7c3dc8f6af02d.zip
SHA256 42f46f9dccecd88e438399b21d2e65df9168e5e09106ba44c1f745053ec1005e
Tags
formbook s2wt 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

42f46f9dccecd88e438399b21d2e65df9168e5e09106ba44c1f745053ec1005e

Threat Level: Known bad

The file fb90829fafd93c8e83d7c3dc8f6af02d.zip was found to be: Known bad.

Malicious Activity Summary

formbook s2wt discovery rat spyware stealer trojan

Formbook

Formbook payload

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-31 15:46

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-31 15:46

Reported

2024-08-31 15:48

Platform

win7-20240729-en

Max time kernel

119s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.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

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\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2524 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe
PID 2524 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe
PID 2524 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe
PID 2524 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe
PID 2524 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe
PID 2524 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe
PID 2524 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe

Processes

C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe

"C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe"

C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe

"C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe"

Network

N/A

Files

memory/2524-0-0x0000000074E3E000-0x0000000074E3F000-memory.dmp

memory/2524-1-0x00000000012B0000-0x0000000001346000-memory.dmp

memory/2524-2-0x0000000074E30000-0x000000007551E000-memory.dmp

memory/2524-3-0x00000000003A0000-0x00000000003AE000-memory.dmp

memory/2524-4-0x0000000074E3E000-0x0000000074E3F000-memory.dmp

memory/2524-5-0x0000000074E30000-0x000000007551E000-memory.dmp

memory/2524-6-0x0000000000D10000-0x0000000000D68000-memory.dmp

memory/2824-7-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2824-8-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2824-11-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2824-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2524-12-0x0000000074E30000-0x000000007551E000-memory.dmp

memory/2824-13-0x00000000009E0000-0x0000000000CE3000-memory.dmp

memory/2824-14-0x00000000009E0000-0x0000000000CE3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-31 15:46

Reported

2024-08-31 15:48

Platform

win10v2004-20240802-en

Max time kernel

140s

Max time network

131s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe"

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

rat
Description Indicator Process Target
N/A N/A N/A 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\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1592 wrote to memory of 3492 N/A C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe
PID 1592 wrote to memory of 3492 N/A C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe
PID 1592 wrote to memory of 3492 N/A C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe
PID 1592 wrote to memory of 4144 N/A C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe
PID 1592 wrote to memory of 4144 N/A C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe
PID 1592 wrote to memory of 4144 N/A C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe
PID 1592 wrote to memory of 4144 N/A C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe
PID 1592 wrote to memory of 4144 N/A C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe
PID 1592 wrote to memory of 4144 N/A C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe

Processes

C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe

"C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe"

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3036,i,11251706013556949551,5157034131170452377,262144 --variations-seed-version --mojo-platform-channel-handle=4188 /prefetch:8

C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe

"C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe"

C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe

"C:\Users\Admin\AppData\Local\Temp\8195d90a65592855ca10dc169e75e02dd055f91462c9993d18c879ee8431cfbf.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
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 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 192.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 35.56.20.217.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

Files

memory/1592-0-0x000000007533E000-0x000000007533F000-memory.dmp

memory/1592-1-0x0000000000FE0000-0x0000000001076000-memory.dmp

memory/1592-2-0x00000000084C0000-0x0000000008A64000-memory.dmp

memory/1592-3-0x0000000007FB0000-0x0000000008042000-memory.dmp

memory/1592-4-0x00000000033A0000-0x00000000033AA000-memory.dmp

memory/1592-5-0x0000000075330000-0x0000000075AE0000-memory.dmp

memory/1592-6-0x0000000008480000-0x000000000848E000-memory.dmp

memory/1592-7-0x000000007533E000-0x000000007533F000-memory.dmp

memory/1592-8-0x0000000075330000-0x0000000075AE0000-memory.dmp

memory/1592-9-0x0000000009450000-0x00000000094EC000-memory.dmp

memory/1592-10-0x00000000095A0000-0x00000000095F8000-memory.dmp

memory/4144-11-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1592-14-0x0000000075330000-0x0000000075AE0000-memory.dmp

memory/4144-13-0x00000000016E0000-0x0000000001A2A000-memory.dmp