Analysis

  • max time kernel
    141s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    02-09-2024 01:08

General

  • Target

    2024-09-02_089d89ba68389434aa357a8ba14e67e1_avoslocker.exe

  • Size

    4.6MB

  • MD5

    089d89ba68389434aa357a8ba14e67e1

  • SHA1

    368adc864abf3dc2a5e96decbc702742e343e3b8

  • SHA256

    0b4739a256423710208eb61d9a97906a132b8886602ae09efd0c225daa7c201c

  • SHA512

    36b1479e23cb3c8553e27618bd29b370daf2801df519db987583be86f59acd1afff8c9744873838c5946f800c21f4635cd7857514d662ce3e84ecb5915d84773

  • SSDEEP

    98304:5Wqq+Mb+lyWv5rIy5YFWAvwzn6IhTE3mFFkKmIcoRbO462gnw:5WagWvpIy5YPvwzn6Ii3skKm9WOdBw

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 35 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

    Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-02_089d89ba68389434aa357a8ba14e67e1_avoslocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-02_089d89ba68389434aa357a8ba14e67e1_avoslocker.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2748
    • C:\Windows\temp\0667725E7C86FE114BC06CEF50A379A6\2024-09-02_089d89ba68389434aa357a8ba14e67e1_avoslocker.exe
      "C:\Windows\temp\0667725E7C86FE114BC06CEF50A379A6\2024-09-02_089d89ba68389434aa357a8ba14e67e1_avoslocker.exe" -initialNonSecureSetupPath="C:\Users\Admin\AppData\Local\Temp\2024-09-02_089d89ba68389434aa357a8ba14e67e1_avoslocker.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks whether UAC is enabled
      • Writes to the Master Boot Record (MBR)
      • Checks for VirtualBox DLLs, possible anti-VM trick
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      • Suspicious use of WriteProcessMemory
      PID:2828
      • C:\Users\Admin\AppData\Local\Temp\018C165E7C86FE114BC06CEF50A379A6\setup_ui.exe
        "C:\Users\Admin\AppData\Local\Temp\018C165E7C86FE114BC06CEF50A379A6\setup_ui.exe" -cp=objref:TUVPVwEAAAAAAAAAAAAAAMAAAAAAAABGgQIAAAAAAADpvPx+zfrQDxkJ0+bsszSIApwAAAwL//8b8biomMSqxy4AGAAHAFgAZQBjAHUAZABuAGMAZAAAAAcAMQAwAC4AMQAyADcALgAxAC4AMgAxAAAAAAAJAP//AAAeAP//AAAQAP//AAAKAP//AAAOAP//AAAWAP//AAAfAP//AAAAAA==:
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2820

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\Kaspersky Lab Setup Files\KFA21.18.5.438.0.282.0\au_setup_E561C813-68C7-11EF-B40C-C6FE053A976A\startup.exe

    Filesize

    4.6MB

    MD5

    3a153807503eeaed8f58c2ea14beafb6

    SHA1

    391168e3edd238fa06ab8d28ddbf2352365d4ede

    SHA256

    1e73fdb4ddfe7d58dcbaad2ff21ed70965a2d015b14698be0b737d6aa7235935

    SHA512

    9d4e503f6d411e1d1f49fc76a50338402f990571b6c14241d84b98fd5303df81ee415c390a2319d72ee30c45daac34520e0f342d76e7f81835a7c081903c4a46

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

    Filesize

    342B

    MD5

    d5ecc591fdd34c4c68c864cb80a9c3a4

    SHA1

    651209664bfe4d73b7864995a34393e280ec2b88

    SHA256

    1926a382f77b1d0fcf5ee2e9d4209f7ea3f42b4049f0d84cf873bb27f605129a

    SHA512

    8060cd85f767f66754aa7402ca03011a7654e11df1f39097c634893f172a21f4034b4820322c3526f84a566a2b606f753ef3a4ec741bf7a5950637b15a896d9f

  • C:\Users\Admin\AppData\Local\Temp\018C165E7C86FE114BC06CEF50A379A6\kl.setup.ui.dll

    Filesize

    279KB

    MD5

    3c7d941e01763db131f05cd5e17909d0

    SHA1

    a7f8afec2bae02d5e71de09691ed23a59afbb36b

    SHA256

    a985540c3dedab11d80faa0537ffc3e91f3f778da28f7d60dff3ccbbec97de74

    SHA512

    78ce5069df9da39b01ebea7ef7c6b582a2b266e51359d1d2561413df290f3eb2039341fc474317c116232542899d7cdd0d84e92837677770988d164f53e2b65f

  • C:\Users\Admin\AppData\Local\Temp\018C165E7C86FE114BC06CEF50A379A6\kl.setup.ui.interoplayer.dll

    Filesize

    55KB

    MD5

    ecc8a400ad9e21c8482a879eb161b820

    SHA1

    c880c3ca976b3c9ace7c5690b05c9b7323012530

    SHA256

    91c2c0e8e42ce3fbfdb9654d5e5c7b8b6ae192d64e5b2c67781669e1d6ad7046

    SHA512

    71afc54089027d9de144945d40278658780babcf09aad6e0f4a1805428f8a68903b5749c21758c37ff6e1691b7973f8c66f5e23b23002e124ed9f1d892ce6a74

  • C:\Users\Admin\AppData\Local\Temp\018C165E7C86FE114BC06CEF50A379A6\kl.ui.framework.dll

    Filesize

    213KB

    MD5

    676bdc05672d36e2ef7de38aa83a2803

    SHA1

    1a87a7c0b8571631800c517fac92a06bd88657b9

    SHA256

    79c7455735eb0b7e8b3cf46da78b06fb81229169d85039afab44ca74fe3f9a43

    SHA512

    c136de38e9bf50b901ab79d51169356f6f8077c18d440ea39d6920f2335f7cd67537697b90479be4a6dc59529842121b84f2e7b9223c740e6453ae47ac3de78d

  • C:\Users\Admin\AppData\Local\Temp\018C165E7C86FE114BC06CEF50A379A6\kl.ui.framework.uikit.b2c.dll

    Filesize

    659KB

    MD5

    8acd5d780ddd04ce22f90db393027cc6

    SHA1

    2466b7e57fb2997e50cfac797065cbe7c565e671

    SHA256

    029317b7e585abd3561020ae0d9a941f64abf01302024270c7fa55648d0c5360

    SHA512

    a57c323a7267a21d2f262d99edd4edc7ba8254e301c3f9c0f8b9d9fbf21914896c0e4517a3a1985976cc80dc2afca595c7369537fa11d10185be26b734179946

  • C:\Users\Admin\AppData\Local\Temp\018C165E7C86FE114BC06CEF50A379A6\kl.ui.framework.uikit.dll

    Filesize

    2.9MB

    MD5

    05b722edf678407e6da411924d11bf74

    SHA1

    2df3ba610c858ea6156867f1ade8aebe3f278d28

    SHA256

    41eb3558586ee2eacc0822b725fba7f755f54c7b0ac450dfeba5a59057192b44

    SHA512

    16a16d35cbb0a71298ce3413d44fd790ee49d8649e0eb9587cd6f20621a3ede6987de6bdb2377180d4616c4fc2b677cff378e89aa9e8e37da3b5a7e6e5ab7484

  • C:\Users\Admin\AppData\Local\Temp\018C165E7C86FE114BC06CEF50A379A6\sharpvectordom.dll

    Filesize

    55KB

    MD5

    46f91941e61609973979d8e5bf321a31

    SHA1

    1b86653c3fdee62d587d3afdad0ffa5aad01235e

    SHA256

    21675b87be651e4a2e7ce2af5a62d9e10a1a04dc2c58e1751b304089a7d5a070

    SHA512

    1a251c8491061a9b01406ba4f89d356edf8417cd89e29a961007964b501ed5ce10baeeb7a388cfb661b21b4cdb09d2a8b2c1c207a85cc285a76614775e71c923

  • C:\Users\Admin\AppData\Local\Temp\Cab540.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\Tar553.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • \Users\Admin\AppData\Local\Temp\018C165E7C86FE114BC06CEF50A379A6\kl.setup.ui.core.dll

    Filesize

    73KB

    MD5

    3d791db3fb8df9cfb95cdc1c89f576cf

    SHA1

    977725bdd90b7e20d86285c9d91c294a98f76ece

    SHA256

    6ff013a27dab58effd6b1fcc885e49302ac99a371c640f01001e036c4f06c6e0

    SHA512

    64cb627d2fefb9245462b5410cc7bbc111d84838f3be2fb8091cb5847faf115fe00397159db01ef6079cf6bbee0062ba71bf8a253b103f271562c61a79eb4a6e

  • \Users\Admin\AppData\Local\Temp\018C165E7C86FE114BC06CEF50A379A6\kl.setup.ui.visuals.dll

    Filesize

    406KB

    MD5

    70f74920e8265226ea92aae61e555df1

    SHA1

    1ba3bec7011418d63d181c1ac452cec1f7beb3a3

    SHA256

    6ac4ff8fd298f8f78c825eb714c801f026db14a1862eec9562952b59a2f862f8

    SHA512

    4ca6d4f881a2dbc1f6c0194451429c389fa0b6a9bd18f5477227895fbb5a5d513c212c4adb48d956603a95216f70c52f07016be2ad92a5c5ccf4f5c44d592673

  • \Users\Admin\AppData\Local\Temp\018C165E7C86FE114BC06CEF50A379A6\kl.ui.framework.localization.dll

    Filesize

    285KB

    MD5

    2985b28c3485039cbee81b840b5437b4

    SHA1

    c7020d197d094196137655da3b0196720d99d2de

    SHA256

    586c371ecc1b17c7cac9f8d72961d9d6504b0bf855ca3501262bb0338c6654a4

    SHA512

    9c2c82c1c1bee1a9e76868a7598998c0b927505395e700d6aac05e7c2a4f522f715534bcd8a512152b7879fc87ee11ceb07c4ef440de5519295d8ababdac6022

  • \Users\Admin\AppData\Local\Temp\018C165E7C86FE114BC06CEF50A379A6\setup.dll

    Filesize

    5.7MB

    MD5

    9c766093f7d40e8762d72aeda819e8ae

    SHA1

    8ee3ad0b31d5e330ee90e67956ee527f99375fd4

    SHA256

    abf726a8acc5988d90f271f1b754da96176797f7e7918797d5b76762f3b88903

    SHA512

    c3d52d511a50efd6e8d38008d3c08147a3cf165cea7ecc8c016915c31d00081c6ecad5f87dd58f1c81d4d52854a2b43a6283006540eaa893aa6b94d826238e6a

  • \Users\Admin\AppData\Local\Temp\018C165E7C86FE114BC06CEF50A379A6\setup_ui.exe

    Filesize

    655KB

    MD5

    79d2f02c6cca6df2bed9e977ca773e0a

    SHA1

    2722d74170d2408ae04d2afa98b7278713d83b1b

    SHA256

    a706cbd6848adc4424108e362412bec9c2e549d8796406a31624301a47e7076c

    SHA512

    c2e09e2b3babcd65bf24c6410bcd4b3f694a44980907a0c3bc6c9d3362806b434c23fb48c669a8a5465446e7283df85fd622ae86f5f70a65d5d625195faf92e8

  • \Users\Admin\AppData\Local\Temp\018C165E7C86FE114BC06CEF50A379A6\sharpvectorconverterswpf.dll

    Filesize

    136KB

    MD5

    9ed0b05697672396a56f9d5c249b7c53

    SHA1

    928e251256859ed146c8b566287ccbcece647878

    SHA256

    93a87c48b86a10f6c0e59827ae90e7af45a0fc61f92df2a64ee47e4219b3873f

    SHA512

    e0ab1c3a50d09ee5174cd1a3ff27566a0e23e5a75c7d16da6635df227e57d68e9cc3cb0f89a14148fe5a9d506e0431f2654bc678a26c928fdd093140051b974f

  • \Users\Admin\AppData\Local\Temp\018C165E7C86FE114BC06CEF50A379A6\sharpvectorcore.dll

    Filesize

    201KB

    MD5

    9620b9b61a710c8a2178747a74d066ac

    SHA1

    1d48e8583dcff441d880b2e2d00fa2c9b6ac905f

    SHA256

    3929ef5d1c09611bde783054cdaa6f19e07a9f22c7e9c85edf9510d13c7c423e

    SHA512

    c88b2dccc17e04ecb9afe3133069778a88873a98133cc2989fde6ced1cbe00c434c9bc6019fdab02b0b65db65f81efc18e235dc2dc827a28cbd0f6397f3b7f68

  • \Users\Admin\AppData\Local\Temp\018C165E7C86FE114BC06CEF50A379A6\sharpvectorcss.dll

    Filesize

    108KB

    MD5

    3249c9313d6902a72ef8f971c26f5082

    SHA1

    726f2eb6b2a82e21eee0e5e497a028f461fc9f95

    SHA256

    393d5ac9b4f30928496f39120ad300b7a81cd7533133adc8c935ce3d1ccacf60

    SHA512

    22ab9eadfcfc24680f5c568024e062141d00a9f4d929ee452cafae3c5ea0d039513b8c17ea85ca2d104f1d4e60ab8b9e44a5ecb6818617d008549ae08215214a

  • \Users\Admin\AppData\Local\Temp\018C165E7C86FE114BC06CEF50A379A6\sharpvectormodel.dll

    Filesize

    996KB

    MD5

    768fd4b2b69b57e5a3370dd19db5bd9f

    SHA1

    6fe8859921169d25cf67af7567f2a97df7da7941

    SHA256

    4eb40c9c1019c0804c813cd0eff2c0da709724b022a4e510be5d6a89cc05bab4

    SHA512

    e08ce0545235b1acc43798eff56570752ae2bf77adb38cb3fae8e2781f8c9cc1709d251709e2491fd8ef203676c9ab7fe91590792ae37226c6e605eb36c4a61c

  • \Users\Admin\AppData\Local\Temp\018C165E7C86FE114BC06CEF50A379A6\sharpvectorrenderingwpf.dll

    Filesize

    202KB

    MD5

    e53fe31b6e8e76e82321b1a7333cece0

    SHA1

    d70a43434b8c3022fe9c9b7f2f3be15c49bd8b72

    SHA256

    97ec1da3c2bfa0d12f3f6d03ceb7316214a07e55f183c324746b1ce8f050503d

    SHA512

    e1679116976918d520f01885498d46e0233a1750a47979cbd675ddc4b8f3047a616cfd94bb60ad15c5dd1a9f49357eefced5b012f7e2e90a5ae21515fa51e3fa

  • \Users\Admin\AppData\Local\Temp\018C165E7C86FE114BC06CEF50A379A6\sharpvectorruntimewpf.dll

    Filesize

    69KB

    MD5

    551b9e8050754178469ec56cd0a61c3a

    SHA1

    e8d0ab21a7dad026f50a64d14d5226a7cc1c8574

    SHA256

    560366743fb87ac7f1c3236f3b21856b8585b580d785b3e79349e603fd80fb14

    SHA512

    c545860998595ff730271f94588841e99383138fd6b6ab5064708cf99ad4e88ba22e7573ed49f5533be1d588dff0cb4976de35d32237b99015019aebd4d3112c

  • \Windows\Temp\0667725E7C86FE114BC06CEF50A379A6\2024-09-02_089d89ba68389434aa357a8ba14e67e1_avoslocker.exe

    Filesize

    4.6MB

    MD5

    089d89ba68389434aa357a8ba14e67e1

    SHA1

    368adc864abf3dc2a5e96decbc702742e343e3b8

    SHA256

    0b4739a256423710208eb61d9a97906a132b8886602ae09efd0c225daa7c201c

    SHA512

    36b1479e23cb3c8553e27618bd29b370daf2801df519db987583be86f59acd1afff8c9744873838c5946f800c21f4635cd7857514d662ce3e84ecb5915d84773

  • memory/2748-1-0x00000000770D0000-0x00000000770E0000-memory.dmp

    Filesize

    64KB

  • memory/2748-0-0x00000000770D0000-0x00000000770E0000-memory.dmp

    Filesize

    64KB

  • memory/2748-2-0x00000000770D0000-0x00000000770E0000-memory.dmp

    Filesize

    64KB

  • memory/2820-145-0x0000000004830000-0x000000000483E000-memory.dmp

    Filesize

    56KB

  • memory/2820-61-0x0000000000980000-0x00000000009B6000-memory.dmp

    Filesize

    216KB

  • memory/2820-57-0x0000000000B50000-0x0000000000B96000-memory.dmp

    Filesize

    280KB

  • memory/2820-118-0x0000000005F50000-0x0000000005FF6000-memory.dmp

    Filesize

    664KB

  • memory/2820-52-0x0000000072AA0000-0x000000007318E000-memory.dmp

    Filesize

    6.9MB

  • memory/2820-121-0x0000000002780000-0x000000000278A000-memory.dmp

    Filesize

    40KB

  • memory/2820-129-0x0000000004D10000-0x0000000004D32000-memory.dmp

    Filesize

    136KB

  • memory/2820-51-0x0000000072AA0000-0x000000007318E000-memory.dmp

    Filesize

    6.9MB

  • memory/2820-133-0x0000000004D80000-0x0000000004DB2000-memory.dmp

    Filesize

    200KB

  • memory/2820-137-0x0000000006730000-0x000000000682A000-memory.dmp

    Filesize

    1000KB

  • memory/2820-47-0x00000000002E0000-0x00000000002EE000-memory.dmp

    Filesize

    56KB

  • memory/2820-50-0x00000000002E0000-0x00000000002EE000-memory.dmp

    Filesize

    56KB

  • memory/2820-93-0x0000000000AF0000-0x0000000000B02000-memory.dmp

    Filesize

    72KB

  • memory/2820-141-0x00000000051E0000-0x00000000051FC000-memory.dmp

    Filesize

    112KB

  • memory/2820-44-0x0000000072AAE000-0x0000000072AAF000-memory.dmp

    Filesize

    4KB

  • memory/2820-76-0x0000000072AA0000-0x000000007318E000-memory.dmp

    Filesize

    6.9MB

  • memory/2820-125-0x00000000049C0000-0x00000000049F4000-memory.dmp

    Filesize

    208KB

  • memory/2820-340-0x0000000002780000-0x000000000278A000-memory.dmp

    Filesize

    40KB

  • memory/2820-101-0x0000000005B60000-0x0000000005E4E000-memory.dmp

    Filesize

    2.9MB

  • memory/2820-149-0x0000000005210000-0x0000000005222000-memory.dmp

    Filesize

    72KB

  • memory/2820-120-0x0000000002780000-0x000000000278A000-memory.dmp

    Filesize

    40KB

  • memory/2820-97-0x0000000000FF0000-0x0000000001038000-memory.dmp

    Filesize

    288KB

  • memory/2820-114-0x00000000059A0000-0x0000000005A06000-memory.dmp

    Filesize

    408KB

  • memory/2820-293-0x0000000072AAE000-0x0000000072AAF000-memory.dmp

    Filesize

    4KB

  • memory/2820-294-0x0000000072AA0000-0x000000007318E000-memory.dmp

    Filesize

    6.9MB

  • memory/2820-295-0x0000000072AA0000-0x000000007318E000-memory.dmp

    Filesize

    6.9MB

  • memory/2820-296-0x0000000072AA0000-0x000000007318E000-memory.dmp

    Filesize

    6.9MB

  • memory/2820-297-0x0000000001170000-0x0000000001215000-memory.dmp

    Filesize

    660KB

  • memory/2828-10-0x00000000770A0000-0x00000000770B0000-memory.dmp

    Filesize

    64KB

  • memory/2828-9-0x00000000770A0000-0x00000000770B0000-memory.dmp

    Filesize

    64KB

  • memory/2828-8-0x00000000770A0000-0x00000000770B0000-memory.dmp

    Filesize

    64KB