Analysis
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max time kernel
234s -
max time network
244s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
08-05-2024 15:14
Static task
static1
Behavioral task
behavioral1
Sample
free_vbuks.zip
Resource
win10v2004-20240508-en
General
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Target
free_vbuks.zip
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Size
41KB
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MD5
1df9a18b18332f153918030b7b516615
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SHA1
6c42c62696616b72bbfc88a4be4ead57aa7bc503
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SHA256
bbd05de19aa2af1455c0494639215898a15286d9b05073b6c4817fe24b2c36fa
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SHA512
6382ca9c307d66ab7566acf78b1afd44b18b24d766253e1dc1cb3a3c0be96ecf1f2042d6bd3332d49078ffee571cf98869c1284c1d3e5c1c7dc3e4c64f71af80
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SSDEEP
768:hzyVr8GSKL6O3QOXk/0u3wqOghrFCezL1VFJdbq2QTJTw02Q:hGx8DKXE//ZhhCirFi2cwK
Malware Config
Signatures
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Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000_Classes\Local Settings OpenWith.exe -
Suspicious behavior: GetForegroundWindowSpam 2 IoCs
pid Process 2696 7zFM.exe 2364 OpenWith.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
description pid Process Token: SeRestorePrivilege 2696 7zFM.exe Token: 35 2696 7zFM.exe Token: SeRestorePrivilege 3884 7zG.exe Token: 35 3884 7zG.exe Token: SeSecurityPrivilege 3884 7zG.exe Token: SeSecurityPrivilege 3884 7zG.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 2696 7zFM.exe 3884 7zG.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2364 OpenWith.exe
Processes
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C:\Windows\Explorer.exeC:\Windows\Explorer.exe /idlist,,C:\Users\Admin\AppData\Local\Temp\free_vbuks.zip1⤵PID:5112
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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 --field-trial-handle=3988,i,18168883380598738769,14202261231630113808,262144 --variations-seed-version --mojo-platform-channel-handle=4160 /prefetch:81⤵PID:1892
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:4088
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C:\Program Files\7-Zip\7zFM.exe"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\free_vbuks.rar"1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:2696
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C:\Program Files\7-Zip\7zG.exe"C:\Program Files\7-Zip\7zG.exe" x -o"C:\Users\Admin\AppData\Local\Temp\free_vbuks\" -spe -an -ai#7zMap29828:100:7zEvent134701⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:3884
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C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2364
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
34KB
MD50a76bd3e26768bba68aca3d210997069
SHA1753690994a18cf58ed0fe3749d16448b763047b8
SHA2569056b87f079861d1b0f041317d6415927d9ffb6498ce2530ff90fda69fa64e78
SHA51214408ea7f44bc365a58d7480fff9ea3b10fa21bfbd3363c6e30b74a4d4121677e20ce1108cce12c203f0760768aee1c1aa69b130e090c409f9a516ea02d70c49