Analysis

  • max time kernel
    142s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-05-2024 13:57

General

  • Target

    $PLUGINSDIR/nsJSON.dll

  • Size

    7KB

  • MD5

    b9cd1b0fd3af89892348e5cc3108dce7

  • SHA1

    f7bc59bf631303facfc970c0da67a73568e1dca6

  • SHA256

    49b173504eb9cd07e42a3c4deb84c2cd3f3b49c7fb0858aee43ddfc64660e384

  • SHA512

    fdcbdd21b831a92ca686aab5b240f073a89a08588e42439564747cad9160d79cfa8e3c103b6b4f2917684c1a591880203b4303418b85bc040f9f00b6658b0c90

  • SSDEEP

    96:Zw8NZ0x0OOdzJt0TwYKj7W/NYDNd9fQ6blfW+KrWC69r7ncnrD6Qdm:6e/7vAmrHblfW3iCmDcru

Score
7/10
upx

Malware Config

Signatures

  • UPX packed file 2 IoCs

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

  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsJSON.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5112
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsJSON.dll,#1
      2⤵
        PID:2696
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2696 -s 600
          3⤵
          • Program crash
          PID:2880
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2696 -ip 2696
      1⤵
        PID:448
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1416 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:8
        1⤵
          PID:2508

        Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/2696-0-0x0000000075040000-0x000000007504A000-memory.dmp

          Filesize

          40KB

        • memory/2696-2-0x0000000075040000-0x000000007504A000-memory.dmp

          Filesize

          40KB