Analysis

  • max time kernel
    151s
  • max time network
    92s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    15-03-2021 02:18

General

  • Target

    Hoa don tien no/Noi dung chi tiet hoa don tien no gui chi Thuong . Cong hoa xa hoi chu nghia Viet Na.exe

  • Size

    339KB

  • MD5

    ceaa5817a65e914aa178b28f12359a46

  • SHA1

    534a7ea9c67bab3e8f2d41977bf43d41dfe951cf

  • SHA256

    6c959cfb001fbb900958441dfd8b262fb33e052342948bab338775d3e83ef7f7

  • SHA512

    fef4c0b451d18a9eb73045b3ddcd44450294f06c616cc7175850e6315a6265bd077c8fd09782c486eea624145c7d4c18f8e00a94c0deb394900f9b3e70e60320

Score
8/10

Malware Config

Signatures

  • Suspicious Office macro 1 IoCs

    Office document equipped with 4.0 macros.

  • 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 9 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Hoa don tien no\Noi dung chi tiet hoa don tien no gui chi Thuong . Cong hoa xa hoi chu nghia Viet Na.exe
    "C:\Users\Admin\AppData\Local\Temp\Hoa don tien no\Noi dung chi tiet hoa don tien no gui chi Thuong . Cong hoa xa hoi chu nghia Viet Na.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:528
    • 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\Office.doc"
      2⤵
      • Drops file in Windows directory
      • Modifies Internet Explorer settings
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:2004

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\Office.doc
    MD5

    76d0b64858e5772a13d44a4268bb1217

    SHA1

    39d0daedfb2af65dcbe88fa171d6100843c98c09

    SHA256

    35444de65a359a2206eaf4dbf394582543088b196e1e88a1029bf7531125cc5b

    SHA512

    bdae16ce85117eed1c25ce0a676b67a1754e8d2223d6f04216d6ec1aad77c98d9e30a9fa338fe051395e33e6d7043ef7e5572d03e9db64885e0efa99d279e20a

  • memory/528-2-0x0000000075D01000-0x0000000075D03000-memory.dmp
    Filesize

    8KB

  • memory/528-5-0x0000000000200000-0x0000000000201000-memory.dmp
    Filesize

    4KB

  • memory/528-6-0x0000000000120000-0x0000000000121000-memory.dmp
    Filesize

    4KB

  • memory/528-11-0x0000000002DE0000-0x00000000037E0000-memory.dmp
    Filesize

    10.0MB

  • memory/1004-10-0x000007FEF7D40000-0x000007FEF7FBA000-memory.dmp
    Filesize

    2.5MB

  • memory/2004-3-0x0000000000000000-mapping.dmp
  • memory/2004-4-0x0000000072F01000-0x0000000072F04000-memory.dmp
    Filesize

    12KB

  • memory/2004-7-0x0000000070981000-0x0000000070983000-memory.dmp
    Filesize

    8KB

  • memory/2004-8-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB