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Analysis

  • max time kernel
    136s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7v200430
  • submitted
    26/05/2020, 23:16

General

  • Target

    CaseExport35869.xls

  • Size

    720KB

  • MD5

    4e01760bab19474560ebc97b9fa1c651

  • SHA1

    379f02d85cf7ec50decc934d61cb8140789ddfe6

  • SHA256

    128503f4b0e1174d03d89fcac4cf6991dda494f10d748157daa90ed0a032fd4e

  • SHA512

    680d9f1c2d26000a3a8702312248ba9d725ff6f3044af188462cc48ae8489175a685814d3f04f163049c537984d2c19703ef13c70be9f0fa0338f69d43b2692d

Malware Config

Signatures

  • Suspicious use of SetWindowsHookEx 27 IoCs
  • Executes dropped EXE 1 IoCs
  • Suspicious use of FindShellTrayWindow 5 IoCs
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Checks whether UAC is enabled 3 IoCs
  • Ursnif RM3

    A heavily modified version of Ursnif discovered in the wild.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • Modifies Internet Explorer settings 1 TTPs 37 IoCs

Processes

  • C:\Program Files\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\CaseExport35869.xls
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Modifies system certificate store
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of WriteProcessMemory
    PID:1304
    • C:\RzzmZzW\jxfwimM\HDrMCsH.exe
      "C:\RzzmZzW\jxfwimM\HDrMCsH.exe"
      2⤵
      • Executes dropped EXE
      PID:892
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of FindShellTrayWindow
    • Checks whether UAC is enabled
    • Suspicious use of WriteProcessMemory
    • Modifies Internet Explorer settings
    PID:1864
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1864 CREDAT:275457 /prefetch:2
      2⤵
      • Suspicious use of SetWindowsHookEx
      • Modifies system certificate store
      • Checks whether UAC is enabled
      • Modifies Internet Explorer settings
      PID:1932
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1864 CREDAT:537609 /prefetch:2
      2⤵
      • Suspicious use of SetWindowsHookEx
      • Checks whether UAC is enabled
      • Modifies Internet Explorer settings
      PID:1756

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/892-1-0x0000000000280000-0x0000000000290000-memory.dmp

    Filesize

    64KB

  • memory/1756-7-0x0000000004AF0000-0x0000000004AF3000-memory.dmp

    Filesize

    12KB

  • memory/1932-8-0x0000000002EF0000-0x0000000002EF1000-memory.dmp

    Filesize

    4KB

  • memory/1932-9-0x0000000002EF0000-0x0000000002EF1000-memory.dmp

    Filesize

    4KB

  • memory/1932-11-0x0000000002EF0000-0x0000000002EF1000-memory.dmp

    Filesize

    4KB

  • memory/1932-13-0x0000000002EF0000-0x0000000002EF1000-memory.dmp

    Filesize

    4KB