Overview

overview

7

Static

static

3

wolskill-w...up.exe

windows11-21h2-x64

7

$PLUGINSDI...er.dll

windows11-21h2-x64

3

$PLUGINSDI...ls.dll

windows11-21h2-x64

3

$PLUGINSDI...em.dll

windows11-21h2-x64

3

$PLUGINSDI...ll.dll

windows11-21h2-x64

3

LICENSES.c...m.html

windows11-21h2-x64

3

d3dcompiler_47.dll

windows11-21h2-x64

1

ffmpeg.dll

windows11-21h2-x64

1

libEGL.dll

windows11-21h2-x64

1

libGLESv2.dll

windows11-21h2-x64

1

natives_blob.js

windows11-21h2-x64

3

resources/elevate.exe

windows11-21h2-x64

3

swiftshade...GL.dll

windows11-21h2-x64

1

swiftshade...v2.dll

windows11-21h2-x64

1

wolskill.exe

windows11-21h2-x64

7

$PLUGINSDI...ec.dll

windows11-21h2-x64

3

$PLUGINSDI...ss.dll

windows11-21h2-x64

3

$PLUGINSDI...7z.dll

windows11-21h2-x64

3

Uninstall ...ll.exe

windows11-21h2-x64

7

Sharing

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General

  • Target

    wolskill-windows-x64-setup.exe

  • Size

    43.6MB

  • Sample

    240820-e9agjsteke

  • MD5

    4bcbc8e08fcebac824cbee197af8a91a

  • SHA1

    ff94273dbd17f0ae47f21c900a369c1b7b1c5491

  • SHA256

    4ac656e49c04e50f3ddcf806d8564d444c922d95af39cebc446548ce437acc20

  • SHA512

    f02c5d3fdb7719705590507fa4ce967381ccb864edfbb439de2030b2d936f0f5eb718763cdb4fcc40a87bd8ea0fd46e627939965855982fe73c44503b56b2925

  • SSDEEP

    786432:sP9tH2cZBiUX9aa15OCWIx5PPmAXGHwdTAFtDE0hsq851XmpCUsP:s2aiK5OCW8H2wNAPijmpCUG

Score
7/10
discoveryexecutionpersistence

Malware Config

Targets

    • Target

      wolskill-windows-x64-setup.exe

    • Size

      43.6MB

    • MD5

      4bcbc8e08fcebac824cbee197af8a91a

    • SHA1

      ff94273dbd17f0ae47f21c900a369c1b7b1c5491

    • SHA256

      4ac656e49c04e50f3ddcf806d8564d444c922d95af39cebc446548ce437acc20

    • SHA512

      f02c5d3fdb7719705590507fa4ce967381ccb864edfbb439de2030b2d936f0f5eb718763cdb4fcc40a87bd8ea0fd46e627939965855982fe73c44503b56b2925

    • SSDEEP

      786432:sP9tH2cZBiUX9aa15OCWIx5PPmAXGHwdTAFtDE0hsq851XmpCUsP:s2aiK5OCW8H2wNAPijmpCUG

    Score
    7/10
    discoverypersistence

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Checks installed software on the system

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

      discovery
    behavioral1

    • Target

      $PLUGINSDIR/SpiderBanner.dll

    • Size

      9KB

    • MD5

      17309e33b596ba3a5693b4d3e85cf8d7

    • SHA1

      7d361836cf53df42021c7f2b148aec9458818c01

    • SHA256

      996a259e53ca18b89ec36d038c40148957c978c0fd600a268497d4c92f882a93

    • SHA512

      1abac3ce4f2d5e4a635162e16cf9125e059ba1539f70086c2d71cd00d41a6e2a54d468e6f37792e55a822d7082fb388b8dfecc79b59226bbb047b7d28d44d298

    • SSDEEP

      192:5lkE3uqRI1y7/xcfK4PRef6gQzJyY1rpKlVrw:5lkMBI1y7UKcef6XzJrpKY

    Score
    3/10
    discovery
    behavioral2

    • Target

      $PLUGINSDIR/StdUtils.dll

    • Size

      100KB

    • MD5

      c6a6e03f77c313b267498515488c5740

    • SHA1

      3d49fc2784b9450962ed6b82b46e9c3c957d7c15

    • SHA256

      b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e

    • SHA512

      9870c5879f7b72836805088079ad5bbafcb59fc3d9127f2160d4ec3d6e88d3cc8ebe5a9f5d20a4720fe6407c1336ef10f33b2b9621bc587e930d4cbacf337803

    • SSDEEP

      3072:WNuZmJ9TDP3ahD2TF7Rq9cJNPhF9vyHf:WNuZ81zaAFHhF9v

    Score
    3/10
    discovery
    behavioral3

    • Target

      $PLUGINSDIR/System.dll

    • Size

      11KB

    • MD5

      75ed96254fbf894e42058062b4b4f0d1

    • SHA1

      996503f1383b49021eb3427bc28d13b5bbd11977

    • SHA256

      a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

    • SHA512

      58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

    • SSDEEP

      192:X24sihno0bW+l97H4GB7QDs91kMtwtobTr4u+QHbazMNHT7dmNIEr:m8vJl97JeoxtN/r3z7YV

    Score
    3/10
    discovery
    behavioral4

    • Target

      $PLUGINSDIR/WinShell.dll

    • Size

      3KB

    • MD5

      1cc7c37b7e0c8cd8bf04b6cc283e1e56

    • SHA1

      0b9519763be6625bd5abce175dcc59c96d100d4c

    • SHA256

      9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6

    • SHA512

      7acf7f8e68aa6066b59ca9f2ae2e67997e6b347bc08eb788d2a119b3295c844b5b9606757168e8d2fbd61c2cda367bf80e9e48c9a52c28d5a7a00464bfd2048f

    Score
    3/10
    discovery
    behavioral5

    • Target

      LICENSES.chromium.html

    • Size

      4.5MB

    • MD5

      c91c1d7d87f2ec9aec7efa9d34808000

    • SHA1

      5325eeb991fb27fcb8640ac3b272ab387a884eb4

    • SHA256

      67885e1586ecf0354e79467340cebe4d977b8ddcb432f7e832008b4ff3c8a1ff

    • SHA512

      6dc0e6518cc682e26572fcc4627ad2a5a616931b4f9fc328a12272876e9139ceefa8bb8164984de6f574e8d76952cf206c79f1af6c9e75eafd92a37619a9d735

    • SSDEEP

      24576:3sOBLmnLiLxsmrwrDK7qcj/kUg7wWnQJ8um:cGLmLAKUuObjhJ6

    Score
    3/10
    discovery
    behavioral6

    • Target

      d3dcompiler_47.dll

    • Size

      4.3MB

    • MD5

      fea40e5b591127ae3b065389d058a445

    • SHA1

      621fa52fb488271c25c10c646d67e7ce5f42d4f8

    • SHA256

      4b074a3976399dc735484f5d43d04b519b7bdee8ac719d9ab8ed6bd4e6be0345

    • SHA512

      d2412b701d89e2762c72dd99a48283d601dd4311e3731d690cc2ab6cced20994fa67bf3fea4920291fc407cd946e20bdc85836e6786766a1b98a86febaa0e3d9

    • SSDEEP

      49152:cwBNwAqRvTvbehyCZ5xRmhErU6jFyU+dQZTHchy0eQago4I+oiP85+hA6+Se4QQU:SUZ5P7FwcAgLbz+3s0Bm

    Score
    1/10
    behavioral7

    • Target

      ffmpeg.dll

    • Size

      2.0MB

    • MD5

      9e470c0b3c89a5897f3d5d903297c65c

    • SHA1

      ec342ca979bf9e765ee8ff8bd55a3ce253477495

    • SHA256

      f222d284e0a8206f10e5272ac87c006959379cd185c8c4152848e4e7a89b9ae3

    • SHA512

      3f2778732d1add971b475a5a058cf727d410c396834946dbe0df1bcd9d3b64948f563b9f96e7200c2df0738eafe8393c0a60905baea54c59d5d1a717b52dc728

    • SSDEEP

      49152:L+cOvGFd/RIgWtRZgE3A0bsPSZAjhwFo7zMYq/X+838tUy1z1:LDOvkOjtRZgEwykU41

    Score
    1/10
    behavioral8

    • Target

      libEGL.dll

    • Size

      138KB

    • MD5

      6fa9e5d7f0100612f31e4de68cdc3387

    • SHA1

      bb1fba878b90bdd386778ae8ac4901f3d3870302

    • SHA256

      d38da60cf89eda2696957dc77231f137475de4c4cc879f8d6ec37a767db3d3f7

    • SHA512

      c7d4d45554ffffd5fab0259235ecea345d77a2b755c7f3c01534cd0289d2e7d4c18d68aa192d3b984ba2b55a609577986dcf9b20e11c30a42d6c84425098a108

    • SSDEEP

      3072:cu1goINM1Rn1Pd9rN+xrBXs0AZ8ia5od09WPgFSXu:cYB+iBD9R+780AZ+e7+

    Score
    1/10
    behavioral9

    • Target

      libGLESv2.dll

    • Size

      7.4MB

    • MD5

      0988ce390d3ff7542ec747425e2cf37b

    • SHA1

      ebfab63a108a09f6ceeb1ec7c3373fe990d4347e

    • SHA256

      8e5eff35f39cdcf525c04469431cebf24a038fc5d5e8bfd8ba82fa3a6dd2ee89

    • SHA512

      240fb7ce78f5e6fca3a5d4cb5a629ec08a38a6b23f285b48a7b3ff2cce4924af240c53cf5f936ded00472c1a87c0b4db3efa25f68024a851b108a673c2453727

    • SSDEEP

      49152:C430yYnlr+v9j2JzYP5YMVBtYKXUu+MHk5ktmveyBiXh3VfE4wfepY/23LdId74Y:C4xqk7YM/xweVPKi+EyJj/RrqGU0

    Score
    1/10
    behavioral10

    • Target

      natives_blob.bin

    • Size

      80KB

    • MD5

      1582ffe1b8cb37438bc22edee6cd0a90

    • SHA1

      01af249f33b2e5ffba18ba8f7cd76f2ee0e5f425

    • SHA256

      02586eeaf4ce40d1b34310d885e34fb63e8e9f155fcedbd796536735907cbe80

    • SHA512

      8c66ba4ef15fea573c29f0f6977e290b8fd72f4c8833f31a9b0ef4285f5493e9b27daf3a02c352ed12eadce36cda933d9d97576bfa4dcbbcc04294e73ad9ebfc

    • SSDEEP

      1536:+bz4Oif2sMnL8gDpKD0rrr/4or06mGsY3csV3iEBSsU0fHBvJ4YfD3z5Q29ei7gy:+bz4Oif2sMaEBSJ0fHBvOYbj5heikwVJ

    Score
    3/10
    execution
    behavioral11

    • Target

      resources/elevate.exe

    • Size

      105KB

    • MD5

      792b92c8ad13c46f27c7ced0810694df

    • SHA1

      d8d449b92de20a57df722df46435ba4553ecc802

    • SHA256

      9b1fbf0c11c520ae714af8aa9af12cfd48503eedecd7398d8992ee94d1b4dc37

    • SHA512

      6c247254dc18ed81213a978cce2e321d6692848c64307097d2c43432a42f4f4f6d3cf22fb92610dfa8b7b16a5f1d94e9017cf64f88f2d08e79c0fe71a9121e40

    • SSDEEP

      3072:1bLnrwQoRDtdMMgSXiFJWcIgUVCfRjV/GrWl:1PrwRhte1XsE1l

    Score
    3/10
    discovery
    behavioral12

    • Target

      swiftshader/libEGL.dll

    • Size

      333KB

    • MD5

      bb1e07d694f6ce830948bc744a190ed6

    • SHA1

      4929cf6a2913d83e2334e6c6f1efda41d0ba5a32

    • SHA256

      d772a8ab69670309f49168c4b5ebe52b4d2b9a85c8a973d97f6c14105fc5b79d

    • SHA512

      8fe6f0a6d8b3471795efc4af76ca77de58b84cc3dac1ab20f5f0da838569e30ff0fdcea5bb48a0a8424d33c23c682c86acec473797b9bdba4cba437ef0f70780

    • SSDEEP

      6144:pK2D69btDbN+DSNx/Ijuyb+s4y8JsAtrajfJAIfCtSswdDm:Fc/+DFbFf8Jfsdrfy

    Score
    1/10
    behavioral13

    • Target

      swiftshader/libGLESv2.dll

    • Size

      3.7MB

    • MD5

      08a81bb285739d860ad515474812a55f

    • SHA1

      0a2f8e76f31c0104b1b3b38061a9b3c625ec9044

    • SHA256

      7cb485b9683747429c77aa52a5f0da6e1b5e641a0b116281b08e29a56391d85f

    • SHA512

      141748dcfa473f70b402b6bd138c4c01a3471d3abd30bc8ba206df9974c2066339b3e0e4d18707d93fda672cb736e8819c01ff08216382bdce594fceaa2ee72a

    • SSDEEP

      49152:X2f+5k/DO3kxF2tDqVJlNEcmJYL2ig2t+Jm3xPS2BA7/YwFidZ0HYukr7W9J6n9d:ux/ekmnQ2Mt2+S2BA7/YwRtgUET

    Score
    1/10
    behavioral14

    • Target

      wolskill.exe

    • Size

      99.8MB

    • MD5

      a31e6c33747fc2a39581d555ffcb734d

    • SHA1

      4fc70b69e31b13a587261a7fa56eb9958d13d668

    • SHA256

      21364c69af726798079346ec2f42d5c669a0e42d55576869e2b9cdb9ab0fc72b

    • SHA512

      8004db2dd1db4f96b905079054e9fc7f02509f0f54f77e17098c24f9df9442860bd4730b1df85eb810bbb77c4810075f0e15edfc915cf3d8fc910d4e3cae49b3

    • SSDEEP

      786432:fptPyMKPgwVFhGmrHHdXVtwY+g+52Ds7ZQPkSXthyHzQNlSo22tNPP1hPl:TPyMGgwV68HHpfwR2DslwDqzGlJ2g

    Score
    7/10
    persistence

    • Loads dropped DLL

    • Adds Run key to start application

      persistence
    behavioral15

    • Target

      $PLUGINSDIR/nsExec.dll

    • Size

      6KB

    • MD5

      3d366250fcf8b755fce575c75f8c79e4

    • SHA1

      2ebac7df78154738d41aac8e27d7a0e482845c57

    • SHA256

      8bdd996ae4778c6f829e2bcb651c55efc9ec37eeea17d259e013b39528dddbb6

    • SHA512

      67d2d88de625227ccd2cb406b4ac3a215d1770d385c985a44e2285490f49b45f23ce64745b24444e2a0f581335fda02e913b92781043e8dfd287844435ba9094

    • SSDEEP

      96:cjHFiKaoggCtJzTlKXb0tbo68qD853Ns7GgmkNG3m+s:9bogRtJzTlNR8qD85uGgmkNP

    Score
    3/10
    discovery
    behavioral16

    • Target

      $PLUGINSDIR/nsProcess.dll

    • Size

      4KB

    • MD5

      f0438a894f3a7e01a4aae8d1b5dd0289

    • SHA1

      b058e3fcfb7b550041da16bf10d8837024c38bf6

    • SHA256

      30c6c3dd3cc7fcea6e6081ce821adc7b2888542dae30bf00e881c0a105eb4d11

    • SHA512

      f91fcea19cbddf8086affcb63fe599dc2b36351fc81ac144f58a80a524043ddeaa3943f36c86ebae45dd82e8faf622ea7b7c9b776e74c54b93df2963cfe66cc7

    • SSDEEP

      48:Sz4joMeH+Iwdf8Rom/L+rOnnk5/OCnXeAdbdOAa4GPI+CJ87eILzlq7gthwIsEQW:64c/eFdfS/SSnkxNa4G+ueqPuCtGsj

    Score
    3/10
    discovery
    behavioral17

    • Target

      $PLUGINSDIR/nsis7z.dll

    • Size

      424KB

    • MD5

      80e44ce4895304c6a3a831310fbf8cd0

    • SHA1

      36bd49ae21c460be5753a904b4501f1abca53508

    • SHA256

      b393f05e8ff919ef071181050e1873c9a776e1a0ae8329aefff7007d0cadf592

    • SHA512

      c8ba7b1f9113ead23e993e74a48c4427ae3562c1f6d9910b2bbe6806c9107cf7d94bc7d204613e4743d0cd869e00dafd4fb54aad1e8adb69c553f3b9e5bc64df

    • SSDEEP

      6144:aUWQQ5O3fz0NG3ucDaEUTWfk+ZA0NrCL/k+uyoyBOX1okfW7w+Pfzqibckl:an5QEG39fPAkrE4yrBOXDfaNbck

    Score
    3/10
    discovery
    behavioral18

    • Target

      Uninstall wolskill.exe

    • Size

      147KB

    • MD5

      89d4122eaa695789e076f0bc0367db96

    • SHA1

      cee343a5c87ab2135864119c9fb16683487b1692

    • SHA256

      1b61fecd41b81a4a33a68f5747e6abed2a4a449e54019e52ac80ca280ada2669

    • SHA512

      905ba6daaa51fc19b373fe110bdc0b85b4b85ce663896ce3263970e6bfb1761a87cdd3b170804824d70f02f61f75b770a616f083ab5646695999100f6828a747

    • SSDEEP

      3072:Aa77v0JhE4Dy6LtauF1p3l/b5VbdGWeH9PDsZ/Bw2tvhOEA1RJCir86SrSrvZwam:Aw4JQ6xjFlNLwH9PwZ/W2t0EyL+ewam

    Score
    7/10
    discovery

    • Executes dropped EXE

    • Loads dropped DLL

    behavioral19

MITRE ATT&CK Enterprise v15

Tasks