Malware Analysis Report

2024-09-22 06:57

Sample ID 240617-fl4adsvgpb
Target Report.ps1
SHA256 bb3f2ff46e9dae66cf62c6e7606a66d02b65abc8dac96e96acd554ebf6fd40ad
Tags
asyncrat default execution rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

bb3f2ff46e9dae66cf62c6e7606a66d02b65abc8dac96e96acd554ebf6fd40ad

Threat Level: Known bad

The file Report.ps1 was found to be: Known bad.

Malicious Activity Summary

asyncrat default execution rat

AsyncRat

Suspicious use of SetThreadContext

Command and Scripting Interpreter: PowerShell

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-17 04:58

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-17 04:58

Reported

2024-06-17 04:59

Platform

win7-20240508-en

Max time kernel

59s

Max time network

59s

Command Line

powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\Report.ps1

Signatures

AsyncRat

rat asyncrat

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1612 set thread context of 2656 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1612 wrote to memory of 2656 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 1612 wrote to memory of 2656 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 1612 wrote to memory of 2656 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 1612 wrote to memory of 2656 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 1612 wrote to memory of 2656 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 1612 wrote to memory of 2656 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 1612 wrote to memory of 2656 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 1612 wrote to memory of 2656 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 1612 wrote to memory of 2656 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe

Processes

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\Report.ps1

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 services-line2.freeddns.org udp
US 8.8.8.8:53 services-line2.freeddns.org udp
US 8.8.8.8:53 services-line2.freeddns.org udp
US 8.8.8.8:53 services-line2.freeddns.org udp

Files

memory/1612-4-0x000007FEF58CE000-0x000007FEF58CF000-memory.dmp

memory/1612-5-0x000000001B880000-0x000000001BB62000-memory.dmp

memory/1612-7-0x000007FEF5610000-0x000007FEF5FAD000-memory.dmp

memory/1612-6-0x00000000021D0000-0x00000000021D8000-memory.dmp

memory/1612-9-0x000007FEF5610000-0x000007FEF5FAD000-memory.dmp

memory/1612-8-0x000007FEF5610000-0x000007FEF5FAD000-memory.dmp

memory/1612-10-0x000007FEF5610000-0x000007FEF5FAD000-memory.dmp

memory/1612-11-0x000007FEF5610000-0x000007FEF5FAD000-memory.dmp

memory/1612-12-0x0000000002B60000-0x0000000002B6A000-memory.dmp

memory/2656-13-0x0000000000400000-0x0000000000416000-memory.dmp

memory/2656-14-0x0000000000400000-0x0000000000416000-memory.dmp

memory/2656-15-0x0000000000400000-0x0000000000416000-memory.dmp

memory/2656-18-0x0000000000400000-0x0000000000416000-memory.dmp

memory/2656-20-0x0000000000400000-0x0000000000416000-memory.dmp

memory/2656-22-0x0000000000400000-0x0000000000416000-memory.dmp

memory/2656-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2656-16-0x0000000000400000-0x0000000000416000-memory.dmp

memory/2656-24-0x0000000073F4E000-0x0000000073F4F000-memory.dmp

memory/1612-23-0x000007FEF5610000-0x000007FEF5FAD000-memory.dmp

memory/2656-25-0x0000000073F40000-0x000000007462E000-memory.dmp

memory/2656-26-0x0000000073F4E000-0x0000000073F4F000-memory.dmp

memory/2656-27-0x0000000073F40000-0x000000007462E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-17 04:58

Reported

2024-06-17 04:59

Platform

win10v2004-20240508-en

Max time kernel

58s

Max time network

64s

Command Line

powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\Report.ps1

Signatures

AsyncRat

rat asyncrat

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4036 set thread context of 3368 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4036 wrote to memory of 1660 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 4036 wrote to memory of 1660 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 4036 wrote to memory of 1660 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 4036 wrote to memory of 3368 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 4036 wrote to memory of 3368 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 4036 wrote to memory of 3368 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 4036 wrote to memory of 3368 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 4036 wrote to memory of 3368 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 4036 wrote to memory of 3368 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 4036 wrote to memory of 3368 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 4036 wrote to memory of 3368 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe

Processes

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\Report.ps1

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.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 --no-appcompat-clear --field-trial-handle=4356,i,14486271492189381216,15799931579469722648,262144 --variations-seed-version --mojo-platform-channel-handle=4212 /prefetch:8

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 services-line2.freeddns.org udp
US 8.8.8.8:53 services-line2.freeddns.org udp
US 8.8.8.8:53 services-line2.freeddns.org udp
US 8.8.8.8:53 services-line2.freeddns.org udp

Files

memory/4036-0-0x00007FFF16A73000-0x00007FFF16A75000-memory.dmp

memory/4036-1-0x0000017AF62A0000-0x0000017AF62C2000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yczojobu.5hp.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/4036-11-0x00007FFF16A70000-0x00007FFF17531000-memory.dmp

memory/4036-12-0x00007FFF16A70000-0x00007FFF17531000-memory.dmp

memory/4036-13-0x0000017AF4060000-0x0000017AF406A000-memory.dmp

memory/3368-14-0x0000000000400000-0x0000000000416000-memory.dmp

memory/4036-17-0x00007FFF16A70000-0x00007FFF17531000-memory.dmp

memory/3368-18-0x0000000074C3E000-0x0000000074C3F000-memory.dmp

memory/3368-19-0x0000000074C30000-0x00000000753E0000-memory.dmp

memory/3368-20-0x0000000005E80000-0x0000000006424000-memory.dmp

memory/3368-21-0x0000000005A70000-0x0000000005B02000-memory.dmp

memory/3368-22-0x0000000005A60000-0x0000000005A6A000-memory.dmp

memory/3368-23-0x0000000074C30000-0x00000000753E0000-memory.dmp