Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20250207-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20250207-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    17-02-2025 20:06

General

  • Target

    slinky/slinky_library.dll

  • Size

    11.7MB

  • MD5

    f4f7eacab208d7b50d50f196bd3facd2

  • SHA1

    82ca056ecb89d1612df069a42952e077f7e079e1

  • SHA256

    4f35cfe4d051d56cc22dc2743024ffa0f3b4ee906b34c4336c72d71bc55de708

  • SHA512

    9b61bd125e066df121186057bcb163bfb3d8fb9ff3447963df0e9b14ab57fdf6a8d1faf61a5e75dc3e53425f541bb624b9d8b787e322ea6b675489d532b8f001

  • SSDEEP

    3:WAYJYJYJYJYJYJYJYJYJYJYJYJYJYJYJYJYJYJYJYJYJYJYJYJYJYJYJYJYJYJYw:z

Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 7 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\slinky\slinky_library.dll,#1
    1⤵
      PID:4412
    • C:\Windows\SysWOW64\wermgr.exe
      "C:\Windows\system32\wermgr.exe" "-outproc" "0" "2192" "1156" "1084" "1160" "0" "0" "0" "0" "0" "0" "0" "0"
      1⤵
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Enumerates system info in registry
      PID:4656
    • C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
      "C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz48cmVxdWVzdCBwcm90b2NvbD0iMy4wIiB1cGRhdGVyPSJPbWFoYSIgdXBkYXRlcnZlcnNpb249IjEuMy4xOTUuNDMiIHNoZWxsX3ZlcnNpb249IjEuMy4xOTUuNDMiIGlzbWFjaGluZT0iMSIgc2Vzc2lvbmlkPSJ7RUY1QTk2MUItNkNGRS00MkZGLTkyNjQtQTlBQUQ4QzNFN0UyfSIgdXNlcmlkPSJ7N0NDNzMzNTYtQ0VFNi00REQ3LUJCMzMtRkFENkZFODcyRTE5fSIgaW5zdGFsbHNvdXJjZT0ic2NoZWR1bGVyIiByZXF1ZXN0aWQ9Ins1MDU0M0U4RS0zNEQ1LTQ4NUQtQjZDMC04QUJDRkM1NkRCMjB9IiBkZWR1cD0iY3IiIGRvbWFpbmpvaW5lZD0iMCI-PGh3IGxvZ2ljYWxfY3B1cz0iMiIgcGh5c21lbW9yeT0iNCIgZGlza190eXBlPSIyIiBzc2U9IjEiIHNzZTI9IjEiIHNzZTM9IjEiIHNzc2UzPSIxIiBzc2U0MT0iMSIgc3NlNDI9IjEiIGF2eD0iMSIvPjxvcyBwbGF0Zm9ybT0id2luIiB2ZXJzaW9uPSIxMC4wLjE5MDQ0LjQ1MjkiIHNwPSIiIGFyY2g9Ing2NCIgcHJvZHVjdF90eXBlPSIxMjUiIGlzX3dpcD0iMCIgaXNfaW5fbG9ja2Rvd25fbW9kZT0iMCIvPjxvZW0gcHJvZHVjdF9tYW51ZmFjdHVyZXI9IiIgcHJvZHVjdF9uYW1lPSIiLz48ZXhwIGV0YWc9IiZxdW90O3I0NTJ0MStrMlRncS9IWHpqdkZOQlJob3BCV1I5c2JqWHhxZVVESDl1WDA9JnF1b3Q7Ii8-PGFwcCBhcHBpZD0iezU2RUIxOEY4LUIwMDgtNENCRC1CNkQyLThDOTdGRTdFOTA2Mn0iIHZlcnNpb249IjEzMi4wLjI5NTcuMTQwIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSIiIGJyYW5kPSJJTkJYIiBjbGllbnQ9IiIgaW5zdGFsbGFnZT0iMTAiIGluc3RhbGxkYXRldGltZT0iMTczODkzNTA2MSI-PGV2ZW50IGV2ZW50dHlwZT0iMzIiIGV2ZW50cmVzdWx0PSIxIiBlcnJvcmNvZGU9IjAiIGV4dHJhY29kZTE9IjQiIHN5c3RlbV91cHRpbWVfdGlja3M9IjcyODAzNTgxMDkiLz48L2FwcD48L3JlcXVlc3Q-
      1⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      PID:4952
    • C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{697970F7-E07B-4A52-A925-297E728C7A62}\MicrosoftEdge_X64_133.0.3065.69_132.0.2957.140.exe
      "C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{697970F7-E07B-4A52-A925-297E728C7A62}\MicrosoftEdge_X64_133.0.3065.69_132.0.2957.140.exe" --msedge --verbose-logging --do-not-launch-msedge --system-level --channel=stable
      1⤵
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:5116
      • C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{697970F7-E07B-4A52-A925-297E728C7A62}\EDGEMITMP_910B8.tmp\setup.exe
        "C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{697970F7-E07B-4A52-A925-297E728C7A62}\EDGEMITMP_910B8.tmp\setup.exe" --install-archive="C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{697970F7-E07B-4A52-A925-297E728C7A62}\MicrosoftEdge_X64_133.0.3065.69_132.0.2957.140.exe" --previous-version="132.0.2957.140" --msedge --verbose-logging --do-not-launch-msedge --system-level --channel=stable
        2⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4436
        • C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{697970F7-E07B-4A52-A925-297E728C7A62}\EDGEMITMP_910B8.tmp\setup.exe
          "C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{697970F7-E07B-4A52-A925-297E728C7A62}\EDGEMITMP_910B8.tmp\setup.exe" --type=crashpad-handler /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Windows\SystemTemp\MsEdgeCrashpad --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=133.0.6943.99 "--annotation=exe=C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{697970F7-E07B-4A52-A925-297E728C7A62}\EDGEMITMP_910B8.tmp\setup.exe" --annotation=plat=Win64 --annotation=prod=Edge --annotation=ver=133.0.3065.69 --initial-client-data=0x248,0x24c,0x250,0x224,0x254,0x7ff667c26a68,0x7ff667c26a74,0x7ff667c26a80
          3⤵
          • Executes dropped EXE
          • Drops file in Windows directory
          PID:1280

    Network

    MITRE ATT&CK Enterprise v15

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    Downloads

    • C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{697970F7-E07B-4A52-A925-297E728C7A62}\EDGEMITMP_910B8.tmp\setup.exe

      Filesize

      6.8MB

      MD5

      bdb1aecedc15fc82a63083452dad45c2

      SHA1

      a074fcd78665ff90ee3e50ffcccad5f6c3e7ddcb

      SHA256

      4ea0907c3fc2c2f6a4259002312671c82e008846d49957bb3b9915612e35b99f

      SHA512

      50909640c2957fc35dd5bcac3b51797aa5daa2fb95364e69df95d3577482e13f0c36a70ae098959cb9c2aaeb4cfe43025c1d8d55b5f8858b474bcb702609749d