Analysis

  • max time kernel
    118s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    08/01/2024, 03:42

General

  • Target

    4a5881510b389c117ceefd6ebd7ac781.exe

  • Size

    1.8MB

  • MD5

    4a5881510b389c117ceefd6ebd7ac781

  • SHA1

    3da55e46f30e773cb1be090c75105994c96c18b0

  • SHA256

    e24e506c5f0e94aff89f5623a3d948aaaf9a1a511656793dc9937cfe04e36ba1

  • SHA512

    c1f572d732687f45c7660753717de42b799f663f8aac5b1be0bc56c0118d6e09a0d5d579f3653960336f353fe38365f9f5c3d876a7d29d3c87ddf336125c1177

  • SSDEEP

    49152:4uIwAxgmP8D9D2ufHU9XFg75oQcxwKFvCWqj9N9JLZ:4uZ99SsU9XidIwwS7bV

Malware Config

Signatures

  • Executes dropped EXE 7 IoCs
  • Loads dropped DLL 53 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Registers COM server for autorun 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Installs/modifies Browser Helper Object 2 TTPs 6 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 25 IoCs
  • Modifies data under HKEY_USERS 3 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs

Processes

  • C:\PROGRA~2\DICTIO~1\bar\1.bin\v4barsvc.exe
    C:\PROGRA~2\DICTIO~1\bar\1.bin\v4barsvc.exe
    1⤵
    • Executes dropped EXE
    PID:2992
  • C:\Program Files (x86)\DictionaryBoss\bar\1.bin\v4HighIn.exe
    "C:\Program Files (x86)\DictionaryBoss\bar\1.bin\v4HighIn.exe" v4tpinst.dll,#5
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    PID:2468
  • C:\PROGRA~2\DICTIO~1\bar\1.bin\v4brmon.exe
    "C:\PROGRA~2\DICTIO~1\bar\1.bin\v4brmon.exe"
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    PID:2176
  • C:\PROGRA~2\DICTIO~1\bar\1.bin\v4barsvc.exe
    "C:\PROGRA~2\DICTIO~1\bar\1.bin\v4barsvc.exe" -install
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    PID:3020
  • C:\PROGRA~2\DICTIO~1\bar\1.bin\v4barsvc.exe
    "C:\PROGRA~2\DICTIO~1\bar\1.bin\v4barsvc.exe" -remove
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    PID:2576
  • C:\PROGRA~2\DICTIO~1\bar\1.bin\v4srchmn.exe
    "C:\PROGRA~2\DICTIO~1\bar\1.bin\v4srchmn.exe" /m=2 /w /h /r
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    PID:2772
  • C:\Users\Admin\AppData\Local\Temp\T8SETUP.EXE
    "C:\Users\Admin\AppData\Local\Temp\T8SETUP.EXE" /p=XQ/n="DictionaryBoss"
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Registers COM server for autorun
    • Adds Run key to start application
    • Installs/modifies Browser Helper Object
    • Drops file in Program Files directory
    • Modifies Internet Explorer settings
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1948
  • C:\Users\Admin\AppData\Local\Temp\4a5881510b389c117ceefd6ebd7ac781.exe
    "C:\Users\Admin\AppData\Local\Temp\4a5881510b389c117ceefd6ebd7ac781.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1848

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • memory/1948-155-0x00000000033F0000-0x000000000349B000-memory.dmp

          Filesize

          684KB