Analysis

  • max time kernel
    78s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7v200430
  • submitted
    09-07-2020 23:23

General

  • Target

    Shipping_docs.xlsx

  • Size

    575KB

  • MD5

    810424744a4fe0841782a3951a960289

  • SHA1

    39482846b08dc45f293a6ef53b69e262459f747d

  • SHA256

    29ab73c3458a25362a6b1dd25d77301156887f6ac2f6e9def94282bcb54631d2

  • SHA512

    bc42c366891eab39fb464d736188a3b0eb60a96c0dd703015a7b6c59784763cb7099e24665e766f0547fadaad0d97601ad7e876463c78b1092aae7e42cbbb768

Score
8/10

Malware Config

Signatures

  • Blacklisted process makes network request 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 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.

  • Uses the VBS compiler for execution 1 TTPs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 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.

  • Suspicious use of WriteProcessMemory 23 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Modifies registry class 280 IoCs
  • Launches Equation Editor 1 TTPs 1 IoCs

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

  • Loads dropped DLL 1 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\Shipping_docs.xlsx
    1⤵
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Modifies registry class
    PID:1392
  • C:\Program Files\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
    "C:\Program Files\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
    1⤵
    • Blacklisted process makes network request
    • Suspicious use of WriteProcessMemory
    • Launches Equation Editor
    • Loads dropped DLL
    PID:1604
    • C:\Users\Admin\AppData\Roaming\vbc.exe
      "C:\Users\Admin\AppData\Roaming\vbc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      • Suspicious behavior: EnumeratesProcesses
      PID:1804
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"
        3⤵
          PID:2004
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
          "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious behavior: EnumeratesProcesses
          PID:2012

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scripting

    1
    T1064

    Exploitation for Client Execution

    1
    T1203

    Defense Evasion

    Scripting

    1
    T1064

    Credential Access

    Credentials in Files

    2
    T1081

    Collection

    Data from Local System

    2
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\vbc.exe
    • C:\Users\Admin\AppData\Roaming\vbc.exe
    • \Users\Admin\AppData\Roaming\vbc.exe
    • memory/1392-4-0x00000000024D0000-0x00000000024D1000-memory.dmp
      Filesize

      4KB

    • memory/1392-6-0x00000000024D0000-0x00000000024D1000-memory.dmp
      Filesize

      4KB

    • memory/1804-1-0x0000000000000000-mapping.dmp
    • memory/2012-7-0x0000000000400000-0x000000000044A000-memory.dmp
      Filesize

      296KB

    • memory/2012-8-0x00000000004456EE-mapping.dmp
    • memory/2012-9-0x0000000000400000-0x000000000044A000-memory.dmp
      Filesize

      296KB

    • memory/2012-10-0x0000000000400000-0x000000000044A000-memory.dmp
      Filesize

      296KB