Analysis

  • max time kernel
    120s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    13-04-2024 17:42

General

  • Target

    kayflock-beta/kayflock.exe

  • Size

    253KB

  • MD5

    2ea6211ab19482dddf2b32fdeddfe409

  • SHA1

    bfb9ab42d59ec933d1ebb8674bc697faaa99a52e

  • SHA256

    7a25def99b85f8486606ec7eb4d52395308afcc930e7b2df23897022b1d6baf1

  • SHA512

    e54d8b6db035ab9274c3f3a00474cf19d1543eb19f1c8eb89e11e33ddc6d675648201a70f495e6ddc0da4d71f17f01e3f6d77d5264effe1f0c46877379933bae

  • SSDEEP

    3072:yczkitvo4BpYN/6mBPry8TXROLdW5m4mURh9OOGm0kqxidvA8qY:yA4NCmBPry/N2VOOPwxU1q

Score
1/10

Malware Config

Signatures

  • Modifies Internet Explorer settings 1 TTPs 34 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\kayflock-beta\kayflock.exe
    "C:\Users\Admin\AppData\Local\Temp\kayflock-beta\kayflock.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1412
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" https://aka.ms/dotnet-core-applaunch?missing_runtime=true&arch=x64&rid=win7-x64&apphost_version=6.0.28&gui=true
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2204
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2204 CREDAT:275457 /prefetch:2
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:2468

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
    Filesize

    68KB

    MD5

    29f65ba8e88c063813cc50a4ea544e93

    SHA1

    05a7040d5c127e68c25d81cc51271ffb8bef3568

    SHA256

    1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

    SHA512

    e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    008ae01a0151cd256c6dc2315d4c3baa

    SHA1

    5b7603cca635adf8254c6575a7638d624a3439bc

    SHA256

    77167ebae8f406ce31eaf45e30f57f866cd84798dee1af81809b2a49b28dfd84

    SHA512

    aadb70e771cde1c3c5c12be5a483da64219b987d39ff0caba74edb1dd15ba92f55ace302442bfbfd2a72b62e6c4d61e4ee5f5bb89ee2afb7d854affd52de9b4e

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    20ef39d2266a4febc77ae102e22929a9

    SHA1

    72e24be0da9a62c8732709c52c8b53edcdf0e1be

    SHA256

    f10fe832fbb3b1eaa07ffd0eeeea27c3ceba8c12e6b3b0f94e61f65dab502be3

    SHA512

    3b76fda46f70c626d0de90dc3e625f6438e3b39596dd94cb5371a81b5778fc6dc170cea9b0af5302987bae12a4fc596d049fcf71e6a1dafd8eca45aab875902a

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    8de593bac367080bebf2777aefc6d0a8

    SHA1

    b470b93965f0777e9e7b8d6e93edf9b65676e22a

    SHA256

    5be9410bd20ef49d244af2de4ff58ceae1a0e1cc4515c446f169f447d47e354c

    SHA512

    aa18c8b78dd7a235b49b938f09bd8f4128dd41dc22086763623b57e5858a85909ef551cfb26a825c83f62a2099335f8dc9711f0de8b5cb448e0233ba4c9110f7

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    b43b74ffdb9a22838de86e77152ac7e4

    SHA1

    41f1d6e976e0417b2cfe05815c1687e6358fd44f

    SHA256

    ac27c557360a5ed18ad3207af1c0d4048b12ac9707873b7fc761f10de63d06c5

    SHA512

    b3aca66cab2ced9cd730531bbe7fb882bdf8ebea3ac68d0bd6f50d962dd9848b5b5fec46e5be44a53bb62cb72b5224b9b095a034f619f47668c0bd1a277c3a15

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    ab3a85ddfd7c9ff602b4544571656695

    SHA1

    e777fa648b272e13adb3a3b3544843b40ba86fea

    SHA256

    cccf19f2bfb1b25b5bade5d524e58cbcfa2a6d5dc56eb0c68251ca44638e77ff

    SHA512

    576e3eda9b182502de46c5ab76247f70bbe4f5ee1e9a25cbdb8f7fe0b8af8684131616e28bceabfca395e66ca2205b651976a5d1efa4eb2c762257fdfa1a3c62

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    3261a16e1dfe43ac6bb4656bf5315e56

    SHA1

    fdf009478237b6a538fb21f3f402f5d569cfb169

    SHA256

    0671557ade32493fdd63840e0da75f96115d0095431cb4631552c0fb8eae40f7

    SHA512

    e5ad5a32e0ad5174fe50455b371d0ec2b149cdfbf184a66016785cfe9c3b26924a34a84c0b9d3da80f80f56005057fccc9eba1fddcc5f3f43abe3ceef1af835a

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    8db15366aca761143d25383c67ae4f06

    SHA1

    64cefba62f75a51baaaa74876c646220180ffc7d

    SHA256

    34e5912200b9d3c0bfd65b19c77de88cdc8ee7c4983fc32f1d4f706f498c2c80

    SHA512

    808d4a33b1b3376a9200b0c19cc53b7d4aeb4ec247300eec4d3eab72daa1f6d628afe301b8a5ffd0f4ecb654148e74a9a110f342f095d6689a453ed0c6509bd9

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    97a1f2ac2aedf7feddc9179bfcbabed6

    SHA1

    734181ba49a969e10f1a23a79a1d7759dae4493c

    SHA256

    4ed6ce5dc0112e1a55d354b4041fe69286436148e7cb5899df20a834b0758910

    SHA512

    e31061c4342e84e81d16ae5f0d644a43bb2e7fa96a0bcfc94ec36903bb3cae13ce1849ec593c6e9aa5e3152c4c777ea8bbde475346365a1d2438d4d381137837

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    14a09b6cc39621752a6c68f03825c04f

    SHA1

    3f63675f9db54ed2b834edaaddd9de25d11438f0

    SHA256

    9a119356bbe1e1cc8cdf5332c185dedb540d0b0b8a5d2f6fbdc74a14a86e4600

    SHA512

    8981e0b295814c99dfdafcce7c3ab781d554ea551a5f5fc0db5c2b1cf88e13cfa5ef9a7e997d8d8d0918171e130086b3e8b7b88c98438be49988017c44f587d3

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    77eb2c8fb76c19624f949237ff4eabd0

    SHA1

    54ee1729bc9251fd0919d2e5b521fe2d4dc96a56

    SHA256

    ff685c601a4de34b8f9006be7d392335cc8307b8a3adb99a249198d26b08bdc4

    SHA512

    5ef91b537e1eba860122f7f52945e4561b8928609c7b683d25d34b57fff90e15459d1595479ef7d5d7b6d8edc192ad1b2be29778e445f87dc56a84d3ec2cf275

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    77534cff368d63ef1592204a5cb739a8

    SHA1

    878aeb0e0f0301a38a7f8662c3670a07cd57455b

    SHA256

    32b57a971875b25e9757c8641c5e71b2519e5dda4d2ae2fa36972ad52b4a9937

    SHA512

    4d8851237d6ae0c2e110f0d44cf85b64dfe23666b13fdb02cbea378891bbc9fa6069ef03f39ec6fb7e2bb1fb35679c5e1d345a4ce1555b7e15957132c20083b7

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    b2f798e95fbcc52c9176f3d98e79a0aa

    SHA1

    1533e279993303f8de9d6ebc39ed3fa3104373a9

    SHA256

    96c56289d7a012d683b2a0e53c500c897828691309015692722f55d45bcd7d7a

    SHA512

    c9396ea16d8ec997c58dd33a5d3eca927ea3061313ca1f3242a9f310ee95577876f3fc4ec33440c85608c420516572d476929fffc09f3702c223a40d9c109932

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    7285fc48ae15a4f7e0f1a61a0285aa4a

    SHA1

    501af22fa78460cb4912d02c40fbabb3816efc0a

    SHA256

    6215742e6a6e41567a80e45cb414086f73266c2c8d3906d8661004368e442ce5

    SHA512

    63a81d1cac281fe48919cf8cc2ac900702351718cd2471702bb1bb73c2729db9a3bf95af21975ba59471b78fb56142c6c54e651ac353cb830ebdca5e73e96d2c

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    521ee67904128e7a242b84f4605c4927

    SHA1

    d7657c6e37bdc15a4f40899e84f4ff2e9fd6d373

    SHA256

    e2b22e092ab10d1c33c83cdf12111d81063a79954c684426f8b92b924c993cde

    SHA512

    aad34c7c6163381760e4a85d1818636ee57b6bf925439ec510032ab55a39736a86ecc542f89b38fd2594deb6d567e431c77728f72950e1329c1b70c2bf1ea3a6

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    e3d57c28c5002d5b598cefd448156dc9

    SHA1

    51d8ca74c4f78e589129314cef75bc230a8c2916

    SHA256

    a9e015781d496c5979f7819a139ec491b2cca928a56ffbf0a91778f72e732a6b

    SHA512

    5489a6a459d5948528ef53c1260ad3edfad1452335194fc317b2eeea257f081548be786928007a61e88b9beb3b95e00acd7b9b331b335455b57882ae62cc76b5

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    685b922882b367781be76a326dac7054

    SHA1

    39f4a099d5f5c60ed2271eb5aa95581e22b8cc66

    SHA256

    1e266bce2939dee6f48fec9ac408bd53a95a00637be0563e4606e7464fcc4ef1

    SHA512

    ec50f0dde222cab88473fde8297a737a2296083f1f1ca3de3e53827b24bbc0f71648f538aa356301a492a6f367c9a00d1d06186f3a02fec788c4eb508a9e0f77

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    acefd083412e0ba1deaf8f6617129f73

    SHA1

    e205baf7ab77b651cde8c7d620c4143815dfb1b2

    SHA256

    dcd6169e57f97b2a7f60a1c1b6331ab24994ed66a5e6ba78a7ff2d8d2293758e

    SHA512

    1cae72c5bdd775da262628d1d7de18e0a70dac7986b389a90f613257de40cd65b1194f05896f448b688f5475013507b2e1d810fb9b5054d43505d6b414913ec3

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    5a1d640b1b7c581c95e4ab7501c851b9

    SHA1

    5ca4f22ca9806ba4b06b30bb8a985bd772c91c97

    SHA256

    da95abf630eb130fdd1aee19c29946b09499a123113cbf0c7d34968431dbe70b

    SHA512

    ae353fa3fd1a21370125781580a9386010b069a242960d02a90a78338647f5e17f0db8547e563edd8f26ab6b39acb2a94014c9312ff9fe4410d3a8cc934b52f6

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    704e423d92c7308cb5b11376b2c1d10e

    SHA1

    cc09a5afb64a686f56abf4e9c68aadca363361e8

    SHA256

    0eb104bd3a2366c985b0b61aec0016df0d578bded30416c74c44bad9d26ffdb3

    SHA512

    14a19778ec5e1be50433ac84bb54dd86cc1ce3f352b93f63f178d877f37f9bd24eb9912e0d8d1ae9a9e2b5bd959beb7bef1c7671ad0bd69e336c24a0b5d903e2

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    583b4f29f8c78d7c65ec3eab7b3e13bb

    SHA1

    2a60e72b8d410a4116686a0ec4c01a63a43b9bf6

    SHA256

    3c2f35aec305e6fb7d8f9491e5a8b6d5d834d65042447c51070c1b3190290a5e

    SHA512

    5963389c8cbd5d76db5b0122d6514bcfb7f1ac7483318720f0cfe8b9bc7b063cfab5d99b3e0ca8e64d91d6b1529484ac0a07106eff9540e75667e7a41b250c5a

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    15939efb7307f95f423091cfafc1285a

    SHA1

    346c76cd70233a1bfa88fbf70fbe884f06808262

    SHA256

    82990ea4cdd470db7d8323a92dbea43c693e3f2178e8277114cec453a9db2994

    SHA512

    850fe89bf455627961ad34275818960e5501aa072f4a3419f84cea3b4596e2cc58352948ccb1dca4f05859a3106e817fde5ef614f8faaf60d3f93f48b055f01a

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    733209b81571d102e78ed4a4793ee26f

    SHA1

    c99a4af7a14cbbe56bbe50779f4bda300f4a70ca

    SHA256

    1de633113d924c9e373ad6398af6c0950e5ca2ca9b2814ef6a57cb9e3b024183

    SHA512

    86f0452a66cbf4db4c87257e2b182fb5082562952720e4560bb9ef0f94b94c05e2715c7429f9219e0b560683a20f1db1c6ac8b21d807a36b4aada11b0e4c2f20

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    18b7ed90594076613d6caef0db7e34a3

    SHA1

    edabd168a401ecee5d589bdba0246ecc56a00313

    SHA256

    85af84b648f9e5c0ae4754852513de01e347bb004027fa4a84f2800322218454

    SHA512

    32811882076548185b4e5cc44f14128727b2c36368cb5bd3dd31ebc90e4a4261039e33141af955cd6a2e9d47b7b5a05be1df2000d4ad2df87653aeb2a7a79b22

  • C:\Users\Admin\AppData\Local\Temp\CabDF1B.tmp
    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\TarE163.tmp
    Filesize

    177KB

    MD5

    435a9ac180383f9fa094131b173a2f7b

    SHA1

    76944ea657a9db94f9a4bef38f88c46ed4166983

    SHA256

    67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

    SHA512

    1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a