Analysis

  • max time kernel
    120s
  • max time network
    75s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    08/07/2020, 09:00

General

  • Target

    httpbiz9holdings.comINVOICEM.xlsx

  • Size

    14KB

  • MD5

    e46baf854751a3373f7c3e2b29795c4b

  • SHA1

    9ab7b5e8212077d63e4e3bba9e11723642ac2d13

  • SHA256

    ba3c7a930968407429cc8e33aa79f4033e1cf2d1597973b6d6cd31b9382cef37

  • SHA512

    a0401ae1b513ff4ccb314bebc77c682c4543a057609d8a724a6161625565de6687e4c04a1d0062684c5ed02a92cfac95960aef872aee900a07f06d4f8cf8828c

Score
8/10

Malware Config

Signatures

  • Adds Run entry to start application 2 TTPs 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Blacklisted process makes network request 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 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\httpbiz9holdings.comINVOICEM.xlsx
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious behavior: AddClipboardFormatListener
    PID:1124
  • C:\Program Files\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
    "C:\Program Files\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
    1⤵
    • Launches Equation Editor
    • Blacklisted process makes network request
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1448
    • C:\Users\Admin\AppData\Roaming\regasms.exe
      C:\Users\Admin\AppData\Roaming\regasms.exe
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      • Suspicious behavior: EnumeratesProcesses
      PID:1520
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jFINBUxQqt" /XML "C:\Users\Admin\AppData\Local\Temp\tmp24FD.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1940
      • C:\Users\Admin\AppData\Roaming\regasms.exe
        "{path}"
        3⤵
        • Adds Run entry to start application
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of AdjustPrivilegeToken
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        PID:2020

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/2020-6-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/2020-9-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/2020-10-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB