Analysis

  • max time kernel
    120s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    22-05-2024 19:15

General

  • Target

    SteamSetup.exe

  • Size

    2.3MB

  • MD5

    1b54b70beef8eb240db31718e8f7eb5d

  • SHA1

    da5995070737ec655824c92622333c489eb6bce4

  • SHA256

    7d3654531c32d941b8cae81c4137fc542172bfa9635f169cb392f245a0a12bcb

  • SHA512

    fda935694d0652dab3f1017faaf95781a300b420739e0f9d46b53ce07d592a4cfa536524989e2fc9f83602d315259817638a89c4e27da709aada5d1360b717eb

  • SSDEEP

    49152:UDP/q9MIX/crfcNVBaXp1m0zyVCMwBHgFzoZhRP8:kC9MI8Hm0GCjgFc3Rk

Malware Config

Signatures

  • Adds Run key to start application 2 TTPs 1 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 36 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 40 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SteamSetup.exe
    "C:\Users\Admin\AppData\Local\Temp\SteamSetup.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Program Files directory
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of WriteProcessMemory
    PID:2328
    • C:\Program Files (x86)\Steam\bin\steamservice.exe
      "C:\Program Files (x86)\Steam\bin\steamservice.exe" /Install
      2⤵
      • Drops file in Program Files directory
      • Executes dropped EXE
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      PID:2612

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\Steam\public\steambootstrapper_brazilian.txt

    Filesize

    4KB

    MD5

    0340d1a0bbdb8f3017d2326f4e351e0a

    SHA1

    90d078e9f732794db5b0ffeb781a1f2ed2966139

    SHA256

    0fcd7ae491b467858f2a8745c5ecdd55451399778c2119517ee686d1f264b544

    SHA512

    9d23e020875ed35825169a6542512ec2ffdb349472a12eb1e59ddc635e57c8fd65fa919873821e35c755aa7d027c9a62d3d0fa617340449d7b2c4cf8dd707e93

  • C:\Program Files (x86)\Steam\public\steambootstrapper_bulgarian.txt

    Filesize

    6KB

    MD5

    4c81277a127e3d65fb5065f518ffe9c2

    SHA1

    253264b9b56e5bac0714d5be6cade09ae74c2a3a

    SHA256

    76a6bd74194efd819d33802decdfddaae893069d7000e44944dda05022cfa6d9

    SHA512

    be077b61f3b6d56a1f4d24957deaf18d2dff699bda6569604aac4f1edb57c3cfd0abc5e2a67809f72e31a90b4aed0813536c153886da2099376964c60e56001a

  • C:\Program Files (x86)\Steam\public\steambootstrapper_czech.txt

    Filesize

    4KB

    MD5

    2158881817b9163bf0fd4724d549aed4

    SHA1

    c500f2e8f47a11129114ee4f19524aee8fecc502

    SHA256

    650a265dffdc5dc50200bb82d56f416a3a423eecc08c962cfd1ba2d40a1ff3f7

    SHA512

    f3594aad9d6c50254f690c903f078a5b7a58c33bd418abdad711ebb74cfbdb5564679593e08fb2d4378faaf4160d45e3d276ba1aa8a174ed77a5791bcac46f28

  • C:\Program Files (x86)\Steam\public\steambootstrapper_danish.txt

    Filesize

    4KB

    MD5

    03b664bd98485425c21cdf83bc358703

    SHA1

    0a31dcfeb1957e0b00b87c2305400d004a9a5bdb

    SHA256

    fdf7b42b3b027a12e1b79cb10ab9e6e34c668b04eb9e8a907d8611ba46473115

    SHA512

    4a8cdd4b98432ba9d9b36bc64aab9a2eab31a074d1cbdfab3d35a14216c60752b5580c41bbb70104993420043685d3bd47eb6637b8fcbb3f42f76a15e4be041d

  • C:\Program Files (x86)\Steam\public\steambootstrapper_dutch.txt

    Filesize

    4KB

    MD5

    31a29061e51e245f74bb26d103c666ad

    SHA1

    271e26240db3ba0dcffc10866ccfcfa1c33cf1cc

    SHA256

    56c8a86fa95eab0d8f34f498e079b5516b96d2a2f1ad9c2a888555e50e47f192

    SHA512

    f85865c1e9ab45e5586d3dd2b45d15265193e8a3c34b6bb1ac7e415a1ea878cfb044e8e01012e917e4f00bb9e0a422f56253f328df1bac99a145e19433354cf8

  • C:\Program Files (x86)\Steam\public\steambootstrapper_english.txt

    Filesize

    4KB

    MD5

    da6cd2483ad8a21e8356e63d036df55b

    SHA1

    0e808a400facec559e6fbab960a7bdfaab4c6b04

    SHA256

    ebececd3f691ac20e5b73e5c81861a01531203df3cf2baa9e1b6d004733a42a6

    SHA512

    06145861eb4803c9813a88cd715769a4baa0bab0e87b28f59aa242d4369817789f4c85114e8d0ceb502e080ec3ec03400385924ec7537e7b04f724ba7f17b925

  • C:\Program Files (x86)\Steam\public\steambootstrapper_finnish.txt

    Filesize

    4KB

    MD5

    9e62fc923c65bfc3f40aaf6ec4fd1010

    SHA1

    8f76faff18bd64696683c2a7a04d16aac1ef7e61

    SHA256

    8ff0f3cbdf28102ff037b9cda90590e4b66e1e654b90f9aea2cd5364494d02b7

    SHA512

    c8ff15373b37e848e6239a82424569e77c82a5fc557d17e7d2ed1d0d2b2f7d026cc1e2bc98cb5ee945c02cfefb82803c23fa6a26f48ff0adcf762f94cd5dd035

  • C:\Program Files (x86)\Steam\public\steambootstrapper_french.txt

    Filesize

    4KB

    MD5

    10c429eb58b4274af6b6ef08f376d46c

    SHA1

    af1e049ddb9f875c609b0f9a38651fc1867b50d3

    SHA256

    a1f6ba57ee41e009d904905c0ce5e75a59ee6790e08542561303109e1faafa13

    SHA512

    d8760f61760bffd8671b727d386ae220e7e6e68829a01553cfd5eb60ef8bd1d7c1b25e7b17a6db5bd17ba6712ef44999726764459318e784843c73bc4facaf46

  • C:\Program Files (x86)\Steam\public\steambootstrapper_german.txt

    Filesize

    4KB

    MD5

    5c026fd6072a7c5cf31c75818cddedec

    SHA1

    341aa1df1d034e6f0a7dff88d37c9f11a716cae6

    SHA256

    0828572e4fa00c186dbf1d9072a6154d65cb499c6a37e338f3305f77a2fee382

    SHA512

    f9d28714b2a05f8d9025f1692e4d7e8baa6daf6176353f65646a38814a242ef2adededa44419edd69f10cf96ffba506dab7cb6e52111457bf69cffef12174b12

  • C:\Program Files (x86)\Steam\public\steambootstrapper_greek.txt

    Filesize

    6KB

    MD5

    189ba063d1481528cbd6e0c4afc3abaa

    SHA1

    40bdd169fcc59928c69eea74fd7e057096b33092

    SHA256

    c0a7a1df442ac080668762df795c72aa322e9d415c41bd0a4c676a4dc0551695

    SHA512

    ce59ad9b17bab4de1254e92ce4fe7d8c8242832f62ab382e8f54199a9932cd11b5800cc33895441426373d5210cc74104e0271b721a7e26ed400b716ae4d5903

  • C:\Program Files (x86)\Steam\public\steambootstrapper_hungarian.txt

    Filesize

    4KB

    MD5

    18aaaf5ffcdd21b1b34291e812d83063

    SHA1

    aa9c7ae8d51e947582db493f0fd1d9941880429f

    SHA256

    1f45bb7bdfa01424f9237eec60eba35dc7f0dc4e8c2e193fe768fe96d3ff76d5

    SHA512

    4f3e56d1abe26b56d3f805dc85baaca450c0c7bec57ebcf8a6bb6ebb8588307dad130c83bf792bac76694909a14fd6a4d7d1e9b31e32fba11256343b9fc18154

  • C:\Program Files (x86)\Steam\public\steambootstrapper_indonesian.txt

    Filesize

    4KB

    MD5

    1514d082b672b372cdfb8dd85c3437f1

    SHA1

    336a01192edb76ae6501d6974b3b6f0c05ea223a

    SHA256

    3b3c5c615fd82070cc951ab482d3de8cb12df0b3df59fbd11f9d3271fa2fbca4

    SHA512

    4d41c945ce7c94746875b0dbceb14811d4966de4e97fe047406a304162fde7e1e2a16367fc2e43978e2e5aa66749f036b4444aa2312673c2cc3af296e8b77f55

  • C:\Program Files (x86)\Steam\public\steambootstrapper_italian.txt

    Filesize

    4KB

    MD5

    8958371646901eac40807eeb2f346382

    SHA1

    55fb07b48a3e354f7556d7edb75144635a850903

    SHA256

    b01ec64d75fd1fbd00fbeb45a3fb39244911a8b22bb43de4e0c03f205184f585

    SHA512

    14c5dbb017822336f22bf6779ccd4a66604ddc5f2c3caa24271e96f739fef007754d96844efa422d6682cbcd2d3bc902c36f0f6acb3eb87ed8d7b3f885973554

  • C:\Program Files (x86)\Steam\public\steambootstrapper_japanese.txt

    Filesize

    5KB

    MD5

    7e1d15fc9ba66a868c5c6cb1c2822f83

    SHA1

    bfe9a25fdc8721d7b76cecb9527a9ba7823dc3d7

    SHA256

    fc74e26a8baabbe4851109512d85173b75dbf7293d41eb3b92a1957a773c8265

    SHA512

    0892be14a858cc860766afb1c996b2c355108a7e50971ea3ec00d15069e919a6eb05a61fa839bea3938492c391e274144c5e248f4c204a602bf36adf27e5b406

  • C:\Program Files (x86)\Steam\public\steambootstrapper_koreana.txt

    Filesize

    4KB

    MD5

    202b825d0ef72096b82db255c4e747fa

    SHA1

    3a3265e5bbaa1d1b774195a3858f29cea75c9e75

    SHA256

    3d1399f5323a3ece1b1a8b3b31f8fd7f50c3bd319ab3f1c38c6e347452c95314

    SHA512

    e8fc7cc09f431301d22a07b238179ee053505090e3c4db30ead061513fe7159f1fe8b80efc93f4597fe00f01087bbe0bb2231e13693d72c8def138657cb91566

  • C:\Program Files (x86)\Steam\public\steambootstrapper_latam.txt

    Filesize

    4KB

    MD5

    7913f3f33839e3af9e10455df69866c2

    SHA1

    15fa957d0a6a2717027f5b35f4dbe5e0ab8ece25

    SHA256

    05bc1f4973c6d36002ac1b37ce46b1f941fcb4338282e0ec1ec83fb558d1a88c

    SHA512

    534e541757d19ee157a268bf7ea358b48015f400542fcfa49cdb547cd652926160f015fe2cf026d9c4996e56ab90ca3899dfd457997d915bf6bc9d7bb00ba804

  • C:\Program Files (x86)\Steam\public\steambootstrapper_norwegian.txt

    Filesize

    4KB

    MD5

    58e0fcbee3cca4ef61b97928cfe89535

    SHA1

    1297e3af3ca9e4fe3cc5db78ebbfa642e8a2c57b

    SHA256

    c084a68b65d507eb831831aa2ab9afb9536cb99a840d248cc155ff87fad18425

    SHA512

    99aff0c481e34cd0e4fcbb2af471afb56d91aa11be664462b08e17ae169ca03ef77e7063b4ecd0f38ca7b2f6dc0bf2e316c7b31dffbbcfc763cd8fae27dc78d2

  • C:\Program Files (x86)\Steam\public\steambootstrapper_polish.txt

    Filesize

    4KB

    MD5

    9b0b0e82f753cc115d87c7199885ad1b

    SHA1

    5743a4ab58684c1f154f84895d87f000b4e98021

    SHA256

    0bdeee9fa28d54d384e06ea646fbcfe3f06698a31dfdc1a50703ffe83ad78d32

    SHA512

    b7780b82fbe705bc8e5a527c011eb685c99ef0b2eb810617b9f82b891341af95ef1c2f46dce9e458c0c4dcc3e7a0d21db6c77f03419cd1c4b521a9b72f9017df

  • C:\Program Files (x86)\Steam\public\steambootstrapper_portuguese.txt

    Filesize

    4KB

    MD5

    eb8926608c5933f05a3f0090e551b15d

    SHA1

    a1012904d440c0e74dad336eac8793ac110f78f8

    SHA256

    2ed2b0d654d60e0a82b0968a91d568b775144e9d92f2b077b6da75f85ad12d04

    SHA512

    9113c42c38836f71ff0cc7019aff8c873845f47fbf1ab97e981cb038f4d8495b6df784402b1ee9666e8e567ae866b0284c81e6a16efb47131d5ef88569c4843a

  • C:\Program Files (x86)\Steam\public\steambootstrapper_romanian.txt

    Filesize

    4KB

    MD5

    6367f43ea3780c4ee166454f5936b1a8

    SHA1

    027a2c24c8320458c49cd78053f586cb4d94ee6f

    SHA256

    f8d1972e75a320344e3c834ba0a3a6a86edb39e20ef706bda9b7965d440d1998

    SHA512

    31aab33e0d272cb43a8c160b3d37256716a683e5052192fd0e4d3cdaf30a10a9afa9d26d5d14ad216ee455627c32892a711d2bc137ee7a7df9a297f001a19e32

  • C:\Program Files (x86)\Steam\public\steambootstrapper_russian.txt

    Filesize

    6KB

    MD5

    e04ad6c236b6c61fc53e2cb57ced87e8

    SHA1

    e9d4846b7e6cc755ee14a5d3fa45ee7d3bf425a4

    SHA256

    08c775efa77c2a92d369f794882e467b6e2526e61bc7aa7724f48e174524502e

    SHA512

    0dfb7e6d811d649103499018f3d115c542fcaba420ceb69124a4d837fe162ce514e7be2040860c5ef5f9c01c961fa6eea8730606b73ec107d87597989b6fd331

  • C:\Program Files (x86)\Steam\public\steambootstrapper_schinese.txt

    Filesize

    4KB

    MD5

    56dcf7b68f70826262a6ffaffe6b1c49

    SHA1

    12e4272ba0e4eabc610670cdc6941f942da1eb6a

    SHA256

    948cad1bb27109e008f2457248880c759d3fa98b92c5b4033b94f455cb8ac43f

    SHA512

    c3fd9caf0bd4c303a7cc300faada9cfe6dd752e82d67625b31f4c0c2c091596508bb477fe19f758fdf79b25b8ac3f5320a8785d2b6705b9bcc28a054a59454e2

  • C:\Program Files (x86)\Steam\public\steambootstrapper_spanish.txt

    Filesize

    4KB

    MD5

    66456d2b1085446a9f2dbd9e4632754b

    SHA1

    8da6248b57e5c2970d853b8d21373772a34b1c28

    SHA256

    c4f821a4903c4e7faea2931c7fb1cf261eba06a9840c78fdca689f5c784c06c4

    SHA512

    196c2282ba13715709ece706c9219fe70c05dd295840082e7d901b9e5592e74b1bb556782181cdbe35bd1ab0d6197fef67258b09491fabc6f27606dbed667d49

  • C:\Program Files (x86)\Steam\public\steambootstrapper_swedish.txt

    Filesize

    4KB

    MD5

    b2248784049e1af0c690be2af13a4ef3

    SHA1

    aec7461fa46b7f6d00ff308aa9d19c39b934c595

    SHA256

    4bf6b25bf5b18e13b04db6ed2e5ed635eb844fc52baa892f530194d9471f5690

    SHA512

    f5cee6bba20a4d05473971f7f87a36990e88a44b2855c7655b77f48f223219978d91bcd02d320c7e6c2ec368234e1d0201be85b5626ef4909e047e416e1a066c

  • C:\Program Files (x86)\Steam\public\steambootstrapper_tchinese.txt

    Filesize

    4KB

    MD5

    194a73f900a3283da4caa6c09fefcb08

    SHA1

    a7a8005ca77b9f5d9791cb66fcdf6579763b2abb

    SHA256

    5e4f2de5ee98d5d76f5d76fb925417d6668fba08e89f7240f923f3378e3e66f6

    SHA512

    25842535c165d48f4cf4fa7fd06818ec5585cc3719eff933f5776a842713d7adb5667c3b9b1a122a1152450e797535fc7a8e97ebdd31c14b4d4900a33ede01f3

  • C:\Program Files (x86)\Steam\public\steambootstrapper_thai.txt

    Filesize

    7KB

    MD5

    53f7e8ac1affb04bf132c2ca818eb01e

    SHA1

    bffc3e111761e4dc514c6398a07ffce8555697f6

    SHA256

    488294b7faff720dc3ab5a72e0607761484c678b96d6bcd6aad9ee2388356a83

    SHA512

    c2e79c2505a6fd075df113ffce92ad42c146424ca39087601daa4ed15a2b5528d478a093921d9d8a738c7b6b963275a0693ebe526b6e2135d14ced03639d0e70

  • C:\Program Files (x86)\Steam\public\steambootstrapper_turkish.txt

    Filesize

    4KB

    MD5

    29f9a5ab4adfae371bf980b82de2cb57

    SHA1

    6f7ef52a09b99868dd7230f513630ffe473eddf8

    SHA256

    711675edb20b3cb70acf6cf75f2eea8e0d87c8ace3e11c8df362b4517427a34f

    SHA512

    543fe63f791250e05e8fda24fd2ceadebb4c8925e8927de49ae490895c87eed3e61a9ad50237532649f99fe3165836261de215ee3f66ffbfc6d677ddeea7732a

  • C:\Program Files (x86)\Steam\public\steambootstrapper_ukrainian.txt

    Filesize

    6KB

    MD5

    cadd7a2f359b22580bdd6281ea23744d

    SHA1

    e82e790a7561d0908aee8e3b1af97823e147f88b

    SHA256

    3dd0edfbe68236e668fb308f92fe7c6493dbb05bfca85a48de93588f479ccc99

    SHA512

    53672dd13e6ccbe96f6d4a61297c595b6d6cba8de92caa51ccf8ab1d8a82eea5a425eab348f295b9ec27de0026ef849d9230f751a46e040be8863923f91b8519

  • C:\Program Files (x86)\Steam\public\steambootstrapper_vietnamese.txt

    Filesize

    4KB

    MD5

    f350c8747d77777f456037184af9212c

    SHA1

    753d8c260b852a299df76c4f215b0d2215f6a723

    SHA256

    15b6a564e05857a3d2fd6eec85a5a30c491a7553d15ffc025156b3665b919185

    SHA512

    efb86809a0b357b4fcd3ba2770c97d225d0f4d9fb7430c515e847c3dd77ee109def4bef11b650b9773c17050e618008fc03377638c1db3393ac780b5b0bc31b2

  • C:\Users\Admin\AppData\Local\Temp\nsyAAC2.tmp\modern-wizard.bmp

    Filesize

    150KB

    MD5

    3614a4be6b610f1daf6c801574f161fe

    SHA1

    6edee98c0084a94caa1fe0124b4c19f42b4e7de6

    SHA256

    16e0edc9f47e6e95a9bcad15adbdc46be774fbcd045dd526fc16fc38fdc8d49b

    SHA512

    06e0eff28dfd9a428b31147b242f989ce3e92474a3f391ba62ac8d0d05f1a48f4cf82fd27171658acbd667eaffb94cb4e1baf17040dc3b6e8b27f39b843ca281

  • \Program Files (x86)\Steam\Steam.exe

    Filesize

    4.2MB

    MD5

    33bcb1c8975a4063a134a72803e0ca16

    SHA1

    ed7a4e6e66511bb8b3e32cbfb5557ebcb4082b65

    SHA256

    12222b0908eb69581985f7e04aa6240e928fb08aa5a3ec36acae3440633c9eb1

    SHA512

    13f3a7d6215bb4837ea0a1a9c5ba06a985e0c80979c25cfb526a390d71a15d1737c0290a899f4705c2749982c9f6c9007c1751fef1a97b12db529b2f33c97b49

  • \Program Files (x86)\Steam\bin\SteamService.exe

    Filesize

    2.5MB

    MD5

    ba0ea9249da4ab8f62432617489ae5a6

    SHA1

    d8873c5dcb6e128c39cf0c423b502821343659a7

    SHA256

    ce177dc8cf42513ff819c7b8597c7be290f9e98632a34ecd868dc76003421f0d

    SHA512

    52958d55b03e1ddc69afc2f1a02f7813199e4b3bf114514c438ab4d10d5ca83b865ba6090550951c0a43b666c6728304009572212444a27a3f5184663f4b0b8b

  • \Users\Admin\AppData\Local\Temp\nsyAAC2.tmp\System.dll

    Filesize

    22KB

    MD5

    a36fbe922ffac9cd85a845d7a813f391

    SHA1

    f656a613a723cc1b449034d73551b4fcdf0dcf1a

    SHA256

    fa367ae36bfbe7c989c24c7abbb13482fc20bc35e7812dc377aa1c281ee14cc0

    SHA512

    1d1b95a285536ddc2a89a9b3be4bb5151b1d4c018ea8e521de838498f62e8f29bb7b3b0250df73e327e8e65e2c80b4a2d9a781276bf2a51d10e7099bacb2e50b

  • \Users\Admin\AppData\Local\Temp\nsyAAC2.tmp\nsDialogs.dll

    Filesize

    20KB

    MD5

    4e5bc4458afa770636f2806ee0a1e999

    SHA1

    76dcc64af867526f776ab9225e7f4fe076487765

    SHA256

    91a484dc79be64dd11bf5acb62c893e57505fcd8809483aa92b04f10d81f9de0

    SHA512

    b6f529073a943bddbcb30a57d62216c78fcc9a09424b51ac0824ebfb9cac6cae4211bda26522d6923bd228f244ed8c41656c38284c71867f65d425727dd70162

  • \Users\Admin\AppData\Local\Temp\nsyAAC2.tmp\nsExec.dll

    Filesize

    17KB

    MD5

    2095af18c696968208315d4328a2b7fe

    SHA1

    b1b0e70c03724b2941e92c5098cc1fc0f2b51568

    SHA256

    3e2399ae5ce16dd69f7e2c71d928cf54a1024afced8155f1fd663a3e123d9226

    SHA512

    60105dfb1cd60b4048bd7b367969f36ed6bd29f92488ba8cfa862e31942fd529cbc58e8b0c738d91d8bef07c5902ce334e36c66eae1bfe104b44a159b5615ae5

  • \Users\Admin\AppData\Local\Temp\nsyAAC2.tmp\nsProcess.dll

    Filesize

    15KB

    MD5

    08072dc900ca0626e8c079b2c5bcfcf3

    SHA1

    35f2bfa0b1b2a65b9475fb91af31f7b02aee4e37

    SHA256

    bb6ce83ddaad4f530a66a1048fac868dfc3b86f5e7b8e240d84d1633e385aee8

    SHA512

    8981da7f225eb78c414e9fb3c63af0c4daae4a78b4f3033df11cce43c3a22fdbf3853425fe3024f68c73d57ffb128cba4d0db63eda1402212d1c7e0ac022353c