Analysis

  • max time kernel
    164s
  • max time network
    168s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    31-12-2023 04:54

General

  • Target

    2900a61eb29a80a368fbb6930396212d.exe

  • Size

    341KB

  • MD5

    2900a61eb29a80a368fbb6930396212d

  • SHA1

    fedcb5ab469a93328f3cede81119308686ca35b5

  • SHA256

    f9474d7e4bb0cb581aab83d0003f3334520d2b55f9e6185a5cfd9b0972c8c815

  • SHA512

    63f11365544b5425cae2c5eb1ffbf3e7bb35bf159c120b419a0ccad1de4cd6777b962ce3cef43a80343e6d437de1f731012f4b8107ff0ee70cdc9abedc389bcc

  • SSDEEP

    6144:hGFY/6JkMZqf9V7Yo6LHruTDdRvoZplfiF7AlWFSsyS5306OVjyQ6ss:h5WZqf9hQHreYpJi5wWVyS5k5yQJs

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 9 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • UPX packed file 7 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Program Files directory 6 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2900a61eb29a80a368fbb6930396212d.exe
    "C:\Users\Admin\AppData\Local\Temp\2900a61eb29a80a368fbb6930396212d.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2920
    • C:\Users\Admin\AppData\Local\Temp\r3BzlINUYVgyzER.exe
      C:\Users\Admin\AppData\Local\Temp\r3BzlINUYVgyzER.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1740
      • C:\Users\Admin\AppData\Local\Temp\7zSCC67F186\setup-stub.exe
        .\setup-stub.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Program Files directory
        • Modifies system certificate store
        • Suspicious use of FindShellTrayWindow
        PID:2616
    • C:\Windows\CTS.exe
      "C:\Windows\CTS.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:2868

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/1740-10-0x0000000000400000-0x0000000000446000-memory.dmp

    Filesize

    280KB

  • memory/1740-68-0x0000000000400000-0x0000000000446000-memory.dmp

    Filesize

    280KB

  • memory/2616-52-0x0000000000380000-0x000000000038F000-memory.dmp

    Filesize

    60KB

  • memory/2868-19-0x00000000003C0000-0x00000000003D7000-memory.dmp

    Filesize

    92KB

  • memory/2868-69-0x00000000003C0000-0x00000000003D7000-memory.dmp

    Filesize

    92KB

  • memory/2920-0-0x0000000000B50000-0x0000000000B67000-memory.dmp

    Filesize

    92KB

  • memory/2920-4-0x0000000000400000-0x0000000000446000-memory.dmp

    Filesize

    280KB

  • memory/2920-18-0x0000000000220000-0x0000000000237000-memory.dmp

    Filesize

    92KB

  • memory/2920-14-0x0000000000B50000-0x0000000000B67000-memory.dmp

    Filesize

    92KB