Analysis

  • max time kernel
    130s
  • max time network
    117s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    07-12-2020 15:04

General

  • Target

    instrument indenture_12.20.doc

  • Size

    74KB

  • MD5

    9afbe47292bfd00a63dab5ab0e566a36

  • SHA1

    1e34087c2729ebe48d5022dc4eec1cf5eb07e8aa

  • SHA256

    64de1f3425d0aa59ad9c6b59a2e7f0510248458c6bbf7755d7770030438a31cc

  • SHA512

    614489eb44b42f119e7205042cb7619cedf3d87395bb7f30bf1d30ca9b1a30252508c2d09a0f0c17e870b8378e7bddb4fc37563e16d1b6f8657ba601ebdc7330

Score
10/10

Malware Config

Signatures

  • IcedID, BokBot

    IcedID is a banking trojan capable of stealing credentials.

  • 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 8 IoCs
  • Downloads MZ/PE file
  • Loads dropped DLL 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 10 IoCs
  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 17 IoCs
  • Suspicious use of WriteProcessMemory 22 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\instrument indenture_12.20.doc"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2024
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\System32\rundll32.exe" url.dll,OpenURL c:\users\public\index.hta
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:1236
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\users\public\index.hta"
        3⤵
        • Blocklisted process makes network request
        • Modifies Internet Explorer settings
        • Suspicious use of WriteProcessMemory
        PID:1760
        • C:\Windows\SysWOW64\rundll32.exe
          "C:\Windows\System32\rundll32.exe" c:\programdata\aSF9P.pdf,ShowDialogA -r
          4⤵
          • Blocklisted process makes network request
          • Loads dropped DLL
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          PID:1172
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:684

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Defense Evasion

    Modify Registry

    2
    T1112

    Install Root Certificate

    1
    T1130

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\users\public\index.hta
      MD5

      16d4ed03d9bb2ed8edd29daeb0f25e9f

      SHA1

      87104e1373d4dc62c22bac22d8c4b29f19be7280

      SHA256

      5a84c9213268178c70df6dfdcc2b71e3b1316f891e8b62d4d0528150b999b3fc

      SHA512

      4aa01548dc81c6bf98040c43deb786df41282337c7ec6f3b5b0d9812654e615801bef6f05f7c4e892be4f6e29ea41447e0158bcf721b6c41ba98ca29f49d6894

    • \??\c:\programdata\aSF9P.pdf
      MD5

      55a67d831641e2794749f79bb5dc6cc0

      SHA1

      f08e04421956eeb859c81472e5a99ef1a4cf58d8

      SHA256

      34c51f11835d890863fd0af27888bda91467f57607540e6cd70e547c27bde683

      SHA512

      80d955796c1ed3eeb97dd017f941054b835fc6bca47a131f40e599a9675f1a1d84886fcb032fec087c47dbf976cdacdb09f2f0f3a117851f2d5ec9462fcb1d6b

    • \ProgramData\aSF9P.pdf
      MD5

      55a67d831641e2794749f79bb5dc6cc0

      SHA1

      f08e04421956eeb859c81472e5a99ef1a4cf58d8

      SHA256

      34c51f11835d890863fd0af27888bda91467f57607540e6cd70e547c27bde683

      SHA512

      80d955796c1ed3eeb97dd017f941054b835fc6bca47a131f40e599a9675f1a1d84886fcb032fec087c47dbf976cdacdb09f2f0f3a117851f2d5ec9462fcb1d6b

    • memory/684-7-0x0000000000000000-mapping.dmp
    • memory/1172-9-0x0000000000000000-mapping.dmp
    • memory/1236-4-0x0000000000000000-mapping.dmp
    • memory/1760-6-0x0000000000000000-mapping.dmp
    • memory/1760-12-0x00000000060F0000-0x0000000006113000-memory.dmp
      Filesize

      140KB

    • memory/1824-8-0x000007FEF77C0000-0x000007FEF7A3A000-memory.dmp
      Filesize

      2.5MB

    • memory/2024-2-0x0000000004CE0000-0x0000000004D45000-memory.dmp
      Filesize

      404KB

    • memory/2024-3-0x00000000004DC000-0x00000000004E0000-memory.dmp
      Filesize

      16KB