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Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    19/03/2023, 18:49

General

  • Target

    osu!install.exe

  • Size

    4.3MB

  • MD5

    321cf9cb89893c3f78f49c0e19718d08

  • SHA1

    59228593ccbe311dba685af04eb961c87acff981

  • SHA256

    f0b2a03e625517cab9f760e2b6b8ff56ad5aacd1249becb2872bc22fa8817426

  • SHA512

    a25562da867ccb48df6ba42b91a93f8190d77dfb1ec18637afface0cd3dfd6427a2df7a2b7c64157079a619d173d8726b0ae3b8e65d08eb08bdf0d85a438ef44

  • SSDEEP

    49152:kSicrIcF+DhSfDG6zsIGzUwES6pcAsf+hZtXvA+xrQRLYSDnwxRxpDOhB:kh9Dh56w4wES62R0xRxpDOhB

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\osu!install.exe
    "C:\Users\Admin\AppData\Local\Temp\osu!install.exe"
    1⤵
    • Loads dropped DLL
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1964
    • C:\Users\Admin\AppData\Local\osu!\osu!.exe
      "C:\Users\Admin\AppData\Local\osu!\osu!.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1412

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\18E6B4A57A6BC7EC9B861CDF2D6D0D02_C3B142D2C5374581DC2FDFFDEDBDEDDB

    Filesize

    765B

    MD5

    cc1dfcf33cec09cf4b02162f29a2c9ea

    SHA1

    a2d9977e00e49dac782209a10e16893a87c5f8a3

    SHA256

    57831e2f282ae5cf0af7250482eb273f084d2f9eded56adbb5ccdb201b8df8e3

    SHA512

    c241bde31bff14294e460769043108f526999891163dba0498b835f3fa63dc35034fc37b35ab8c43bb7b39816b1ca69fd5abd7469735d038da13f4bea1876a89

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

    Filesize

    61KB

    MD5

    e71c8443ae0bc2e282c73faead0a6dd3

    SHA1

    0c110c1b01e68edfacaeae64781a37b1995fa94b

    SHA256

    95b0a5acc5bf70d3abdfd091d0c9f9063aa4fde65bd34dbf16786082e1992e72

    SHA512

    b38458c7fa2825afb72794f374827403d5946b1132e136a0ce075dfd351277cf7d957c88dc8a1e4adc3bcae1fa8010dae3831e268e910d517691de24326391a6

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

    Filesize

    61KB

    MD5

    e71c8443ae0bc2e282c73faead0a6dd3

    SHA1

    0c110c1b01e68edfacaeae64781a37b1995fa94b

    SHA256

    95b0a5acc5bf70d3abdfd091d0c9f9063aa4fde65bd34dbf16786082e1992e72

    SHA512

    b38458c7fa2825afb72794f374827403d5946b1132e136a0ce075dfd351277cf7d957c88dc8a1e4adc3bcae1fa8010dae3831e268e910d517691de24326391a6

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\AEACCDA8653DD8D7B2EA32F21D15D44F_C99E84AF904BD8598CB3FED576528926

    Filesize

    637B

    MD5

    f6b81037865b527245d8e678b1409f8b

    SHA1

    433045640fd295c2503b575c9ede7406d2e7f42a

    SHA256

    da1579ac52643b907ce3e97b8c7b3d96dc44dd21fddbf4691223a8678d73d51c

    SHA512

    fb57a69f086d563d59c45936a98df7629e134302d25bf47f9a0fe88d7e27618069ffa5121944a853324596da701ed688c062b023a04aabebffb0014de41327cd

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_93702E680A5530C052C8D2BA33A2225F

    Filesize

    1KB

    MD5

    e2b38e80a0b051bf6a94370a1be65b43

    SHA1

    9b6203ec15376f74fe0e73bd81f1cd2c86341163

    SHA256

    cc3abffacfa492e6de85519380a95050e139794ae09b05e45f3c116199e7375d

    SHA512

    f5ac4fd53a4ee6bc7b934e632fc11899b0bf9cc791d307067969a2a1a342d80fc90f90caea5863fdeb3c562e7cf220e10e1c70c92cf9bf27cb6ab0bbccf53ab1

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\18E6B4A57A6BC7EC9B861CDF2D6D0D02_C3B142D2C5374581DC2FDFFDEDBDEDDB

    Filesize

    484B

    MD5

    d177051bc52da5552e20505e1238cf53

    SHA1

    e9bb0128ad9c12015ec3a7ca3086aba33325145a

    SHA256

    2187a094adf82deec66939773686ec33b34704b6d3fc41da5afe1e04c69b5f58

    SHA512

    b615cb41d5f763936fdf6dd9a9b03d314c4a7835fc0ff6878e787599f95513040c832a56f70da3713e2fd3b80ab11cfc54e5b796c1711fea78be109223a788ef

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

    Filesize

    342B

    MD5

    fa451ee430611d4d593b06d79ebf93b0

    SHA1

    4f0bacc490bb2305021298ce2b12bc82edce1d28

    SHA256

    fdf77febecf62ae33e677e00e838134da127008f1d66044177aeb32b91847b92

    SHA512

    cbb861638813379c619b0359b204c2315829606250f3a675986292ca550eb796298b412b88394e981ad8529d4571a0dad2c7c67481358e182b71a148b9918fa6

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\AEACCDA8653DD8D7B2EA32F21D15D44F_C99E84AF904BD8598CB3FED576528926

    Filesize

    488B

    MD5

    1b65f9dafa16713a0eb8bb2ac822faec

    SHA1

    4344f239500401a150d5b3625a82874c644b592a

    SHA256

    691255de2e32ce7e8bb2bd357988bffc2ff7bdaac74b70dc2218db2a296b0576

    SHA512

    d1e4a21e58c33e5dbae725f12fb6c28b72f628926f3afed66b639496b7b56d262608c3a1f0c7e1628bbce037aedf5726283029da1f9511235aa640f3e20cf856

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_93702E680A5530C052C8D2BA33A2225F

    Filesize

    482B

    MD5

    8a2b51c0d05c0a6150aae74ae030fde0

    SHA1

    5a4e2ac417cce794a2281d61f5f36d7669c534d8

    SHA256

    b44b90be9b726674963872c9aecf87a12d2a1a9a4b3427648b55a00cc0d4e3f4

    SHA512

    7c22e28c4e5070673648bade3d815d65fa832b69e28ca81ed199108052b396eedfe56c47713cb5b94b34a9b9db1d2c679392582333adb9a95ba9f68d93cd0ce5

  • C:\Users\Admin\AppData\Local\Temp\Cab4EFD.tmp

    Filesize

    61KB

    MD5

    fc4666cbca561e864e7fdf883a9e6661

    SHA1

    2f8d6094c7a34bf12ea0bbf0d51ee9c5bb7939a5

    SHA256

    10f3deb6c452d749a7451b5d065f4c0449737e5ee8a44f4d15844b503141e65b

    SHA512

    c71f54b571e01f247f072be4bbebdf5d8410b67eb79a61e7e0d9853fe857ab9bd12f53e6af3394b935560178107291fc4be351b27deb388eba90ba949633d57d

  • C:\Users\Admin\AppData\Local\Temp\Tar4F2F.tmp

    Filesize

    161KB

    MD5

    73b4b714b42fc9a6aaefd0ae59adb009

    SHA1

    efdaffd5b0ad21913d22001d91bf6c19ecb4ac41

    SHA256

    c0cf8cc04c34b5b80a2d86ad0eafb2dd71436f070c86b0321fba0201879625fd

    SHA512

    73af3c51b15f89237552b1718bef21fd80788fa416bab2cb2e7fb3a60d56249a716eda0d2dd68ab643752272640e7eaaaf57ce64bcb38373ddc3d035fb8d57cd

  • C:\Users\Admin\AppData\Local\Temp\Tar55E9.tmp

    Filesize

    161KB

    MD5

    be2bec6e8c5653136d3e72fe53c98aa3

    SHA1

    a8182d6db17c14671c3d5766c72e58d87c0810de

    SHA256

    1919aab2a820642490169bdc4e88bd1189e22f83e7498bf8ebdfb62ec7d843fd

    SHA512

    0d1424ccdf0d53faf3f4e13d534e12f22388648aa4c23edbc503801e3c96b7f73c7999b760b5bef4b5e9dd923dffe21a21889b1ce836dd428420bf0f4f5327ff

  • C:\Users\Admin\AppData\Local\osu!\Logs\update.log

    Filesize

    370B

    MD5

    64da3bec0d0884c207b6aae7fd12a3fc

    SHA1

    48206041460666a5b8c4e71030e4095be2b7f557

    SHA256

    75db2cbc080a221842188f9f81df865c02012ed8f1da93b498823c8e1a6f2c80

    SHA512

    7fb990d3a0e40e4090b38d330c7bab4a63f779b72a49a55219d18a6695cf54b3d41c8e2f3220be195dfbdffcaa72857ba16fdfec5698e52529625f1d31de65c6

  • C:\Users\Admin\AppData\Local\osu!\Logs\update.log

    Filesize

    1KB

    MD5

    9cdeb911bcaab9771d1c153423da1b09

    SHA1

    27b273745e52d2b9825a1ce68c6cb8804e124914

    SHA256

    bd48acaa5e31a7d4cbe8dd8336e09a948ed2292f8cf56d4bef9e7582d655e0ac

    SHA512

    2841ded43c563be183c306a3180d2cf71ef956cbcdc495db5b4dab5d6edba29a06207cba72e63312fe521f7240126a98cb9b4fd4b55607fac88557f09aa7b02e

  • C:\Users\Admin\AppData\Local\osu!\Logs\update.log

    Filesize

    3KB

    MD5

    916dd86c1d4666bf7e7c4ce7cc2c88b1

    SHA1

    3a9d73291a631b29249992c72403fdacdc2a6e75

    SHA256

    cd19596c6de4e9f9998ed4c494542dd188b3cb666aebf074e24623fae0abce98

    SHA512

    c2c559c8d7637a7beb0a2272205e2869f8ffa479aac997f125a1c062a2ecac5a067857d029a02e2a73728646beb5663bd1de3af70f4af750f8cff3e8de68dad1

  • C:\Users\Admin\AppData\Local\osu!\Logs\update.log

    Filesize

    4KB

    MD5

    8d8d609da3dfa2a49233b7480cd0fe64

    SHA1

    7f1975f1ba6ec3de344c44e146168032c4f67717

    SHA256

    f9f77e5ba3bc8eee73c973ee7f53e36ee53652b543a56d7b04c27ec81aaab5d3

    SHA512

    c8d8af8b4213690c3d9014af181511625eab3ede7f98b2e2c84337625969e545961723ab98e76759b7b1afb999ae99b00e9c461348e0ee4b60d372a7996a5077

  • C:\Users\Admin\AppData\Local\osu!\osu!.exe

    Filesize

    4.3MB

    MD5

    321cf9cb89893c3f78f49c0e19718d08

    SHA1

    59228593ccbe311dba685af04eb961c87acff981

    SHA256

    f0b2a03e625517cab9f760e2b6b8ff56ad5aacd1249becb2872bc22fa8817426

    SHA512

    a25562da867ccb48df6ba42b91a93f8190d77dfb1ec18637afface0cd3dfd6427a2df7a2b7c64157079a619d173d8726b0ae3b8e65d08eb08bdf0d85a438ef44

  • C:\Users\Admin\AppData\Local\osu!\osu!.exe

    Filesize

    4.3MB

    MD5

    321cf9cb89893c3f78f49c0e19718d08

    SHA1

    59228593ccbe311dba685af04eb961c87acff981

    SHA256

    f0b2a03e625517cab9f760e2b6b8ff56ad5aacd1249becb2872bc22fa8817426

    SHA512

    a25562da867ccb48df6ba42b91a93f8190d77dfb1ec18637afface0cd3dfd6427a2df7a2b7c64157079a619d173d8726b0ae3b8e65d08eb08bdf0d85a438ef44

  • \Users\Admin\AppData\Local\osu!\osu!.exe

    Filesize

    4.3MB

    MD5

    321cf9cb89893c3f78f49c0e19718d08

    SHA1

    59228593ccbe311dba685af04eb961c87acff981

    SHA256

    f0b2a03e625517cab9f760e2b6b8ff56ad5aacd1249becb2872bc22fa8817426

    SHA512

    a25562da867ccb48df6ba42b91a93f8190d77dfb1ec18637afface0cd3dfd6427a2df7a2b7c64157079a619d173d8726b0ae3b8e65d08eb08bdf0d85a438ef44

  • memory/1412-155-0x0000000004E80000-0x0000000004EC0000-memory.dmp

    Filesize

    256KB

  • memory/1412-139-0x0000000001320000-0x0000000001766000-memory.dmp

    Filesize

    4.3MB

  • memory/1412-156-0x0000000004E80000-0x0000000004EC0000-memory.dmp

    Filesize

    256KB

  • memory/1412-314-0x0000000004E80000-0x0000000004EC0000-memory.dmp

    Filesize

    256KB

  • memory/1412-315-0x0000000004E80000-0x0000000004EC0000-memory.dmp

    Filesize

    256KB

  • memory/1964-54-0x00000000003E0000-0x0000000000826000-memory.dmp

    Filesize

    4.3MB

  • memory/1964-131-0x0000000004C70000-0x0000000004CB0000-memory.dmp

    Filesize

    256KB

  • memory/1964-130-0x0000000004C70000-0x0000000004CB0000-memory.dmp

    Filesize

    256KB

  • memory/1964-129-0x0000000004C70000-0x0000000004CB0000-memory.dmp

    Filesize

    256KB

  • memory/1964-128-0x00000000049F0000-0x0000000004A2C000-memory.dmp

    Filesize

    240KB