Analysis

  • max time kernel
    106s
  • max time network
    39s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    21-03-2023 23:15

General

  • Target

    CU211490942534_202303220815.doc

  • Size

    290KB

  • MD5

    9e165cbfb9c884725bbd4df0f83b139a

  • SHA1

    713a6d2bc02f69c677c15a6552185eca010394dd

  • SHA256

    c7cb8dbdcd8cfdb6d2440080afc3e715b6984b5ab2b88e9919fbb70136325368

  • SHA512

    cc0a6546df04e53546ab456d380c61b8859555e7219a34f42161157b157d59bfc31caff7b216be57186aa9d369fc7d2a0f64e2c9bf53956941b779478b52261f

  • SSDEEP

    3072:Fnmahvzr1u2/MbZWMRch0bND6b38zFjjac92mM0WDTAG7UaVGVFoQ9cTMsTViEdp:YkvgZWth0bd6b3QnJ2JbuaaqTMCJp

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Loads dropped DLL 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\CU211490942534_202303220815.doc"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2040
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\System32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\001541.tmp"
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:864
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Users\Admin\AppData\Local\Temp\001541.tmp"
        3⤵
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1692
        • C:\Windows\system32\regsvr32.exe
          C:\Windows\system32\regsvr32.exe "C:\Windows\system32\ZMVJijX\ptcGHKLobZjtNX.dll"
          4⤵
            PID:1920
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        2⤵
          PID:832

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\001541.tmp

        Filesize

        477.1MB

        MD5

        93af932a5fa3ae4fa7646386418da305

        SHA1

        f69fb2fd675b8c5aed747e99229372006654af79

        SHA256

        b949cc17b6f53ecfebb8900e03fda84677c63cc99b72a3a8b1c2e9ed4646e158

        SHA512

        9c24b99a2eb7b25ec4597d6a80441835c7a4c19d255b699c249c6f695d9117079d3694619a02774a8d330e5a8f1d92c26c0150f820a5a772cfad574376eefbc6

      • C:\Users\Admin\AppData\Local\Temp\001607.zip

        Filesize

        949KB

        MD5

        920beeae5812bf6193115e94616d0c40

        SHA1

        363df991fd787fc0e33a450d8c1ee7b50b6d5792

        SHA256

        24f0b8bc8eee58c0ea36935fc1c969047132b41f5e0e5fb64273062a0c24515b

        SHA512

        4bb5f9cdbbd16dcbe0afbd534efbddab362159392211fdf658772187d6108ffea65fa5eb7ab34a53e6a6b67521fa0a8bc29917ba01be0e7f971994a74f839d73

      • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

        Filesize

        20KB

        MD5

        9304aaabd2632bba83c7ca21a8e44e95

        SHA1

        54ef3fd1eb3d5b2848bd8ed05c6b0fd0306cd0cf

        SHA256

        7665856b148a02b19b477d93cfd38fc375060427a5196e411de10ba3c83a0f66

        SHA512

        9772515114e50ec8d45070fc90a0a3a70244ce699f4b519dea3ace07458f9a8b884aea1d8723c16c3fa7d0fb85d7f2ddd5349135fe1e5b629c60e90c37f927d2

      • \Users\Admin\AppData\Local\Temp\001541.tmp

        Filesize

        435.8MB

        MD5

        d0e156028f398b12d442e39e26e33b3a

        SHA1

        4cfdce54863041cf9aeb057a90903ae784ee424f

        SHA256

        3184c8651467ae6762f942a34e3273c583b15d05bc41ac6a00e65c603c25d86e

        SHA512

        7482bc9f73c447fac3813b6186057073aec8394c20891589fb77efea1a0d8b1e4c7bd6bdf46c339d36c7ad36e3ecd428cdadb5d0da57c21fd5e19910accf49c5

      • \Users\Admin\AppData\Local\Temp\001541.tmp

        Filesize

        509.9MB

        MD5

        c03951ac70552d5c6ddaac720916be61

        SHA1

        a7e86222b50fca01b5ef42fd4923c5b26435cee2

        SHA256

        6dc3bd52836a6cc136c6806ef153e69501342183c0a3509bdc8f477d34d0a16f

        SHA512

        8e6f6a1e1176df75dc1b316a670acf3bb1bd848c2951e975cec1f1f59d0178f9a630ec27c4fa7c7982a7d366abec27a2408f5fa3571b559005dc79a8ad8c3d4a

      • memory/1692-842-0x0000000000130000-0x0000000000131000-memory.dmp

        Filesize

        4KB

      • memory/1920-847-0x0000000000170000-0x0000000000171000-memory.dmp

        Filesize

        4KB

      • memory/2040-75-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-82-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-67-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-68-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-69-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-71-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-72-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-73-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-74-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-76-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-77-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

        Filesize

        64KB

      • memory/2040-79-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-80-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-81-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-66-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-78-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-70-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-65-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-62-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-83-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-84-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-111-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-64-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-63-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-61-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-57-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-59-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-60-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/2040-58-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB