Analysis

  • max time kernel
    34s
  • max time network
    41s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    29-10-2022 22:23

General

  • Target

    85a2172264b2486eeb9cb4a4dd388fb7889a2a4242953220e7bfd6d9fcbd6757.exe

  • Size

    732KB

  • MD5

    84bc05e699128ec6a3f824ac961a47d0

  • SHA1

    c12ba51f80a17265072ef64290aa069a44682a27

  • SHA256

    85a2172264b2486eeb9cb4a4dd388fb7889a2a4242953220e7bfd6d9fcbd6757

  • SHA512

    b18f6368a265b31369c8d3075d6ed2fef5c28f954b1e0d7c0833baf10d03b7809c469135cb1b2c5ea6ba53e55d3253b499a6c10575471c8b470eca4ad062cb94

  • SSDEEP

    12288:hfrXVhdHtm+EFS0H2uUQ37hkWOKWm3GZQfW7mpbsBqeqHJjQ:hjFhdHtv8P2HQ37hLGZQfg8bsB8JjQ

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 12 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 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • NSIS installer 14 IoCs
  • Modifies registry class 22 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\85a2172264b2486eeb9cb4a4dd388fb7889a2a4242953220e7bfd6d9fcbd6757.exe
    "C:\Users\Admin\AppData\Local\Temp\85a2172264b2486eeb9cb4a4dd388fb7889a2a4242953220e7bfd6d9fcbd6757.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1348
    • C:\Users\Admin\AppData\Local\Temp\115br_pdf_31.exe
      "C:\Users\Admin\AppData\Local\Temp\115br_pdf_31.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:1272
      • C:\Program Files (x86)\115\browser\115br.exe
        "C:\Program Files (x86)\115\browser\115br.exe" SetDef115Bro
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Program Files directory
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:944
        • C:\Program Files (x86)\115\browser\115br.exe
          "C:\Program Files (x86)\115\browser\115br.exe" SetDefBro
          4⤵
          • Executes dropped EXE
          • Modifies registry class
          • Suspicious use of AdjustPrivilegeToken
          PID:1716

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files (x86)\115\browser\115br.exe

    Filesize

    920KB

    MD5

    bbcc427d62ec2f51b905b9597ccd0636

    SHA1

    a41b427cbb2f9012d998066e2a7ba28f3553cc87

    SHA256

    7db04a246c57555b91a68f72c9d3099417ac866371dbf8cf60501fd47ba789d9

    SHA512

    fb3014c8adb8c0f1d164ebf8670eef112795d004d9c5409f2e3c0153638cf7eb0713ce6ed85abbe12c294388dacddfe48683309d372d295b8a567af9c93072c2

  • C:\Program Files (x86)\115\browser\115br.exe

    Filesize

    920KB

    MD5

    bbcc427d62ec2f51b905b9597ccd0636

    SHA1

    a41b427cbb2f9012d998066e2a7ba28f3553cc87

    SHA256

    7db04a246c57555b91a68f72c9d3099417ac866371dbf8cf60501fd47ba789d9

    SHA512

    fb3014c8adb8c0f1d164ebf8670eef112795d004d9c5409f2e3c0153638cf7eb0713ce6ed85abbe12c294388dacddfe48683309d372d295b8a567af9c93072c2

  • C:\Program Files (x86)\115\browser\115br.exe

    Filesize

    920KB

    MD5

    bbcc427d62ec2f51b905b9597ccd0636

    SHA1

    a41b427cbb2f9012d998066e2a7ba28f3553cc87

    SHA256

    7db04a246c57555b91a68f72c9d3099417ac866371dbf8cf60501fd47ba789d9

    SHA512

    fb3014c8adb8c0f1d164ebf8670eef112795d004d9c5409f2e3c0153638cf7eb0713ce6ed85abbe12c294388dacddfe48683309d372d295b8a567af9c93072c2

  • C:\Program Files (x86)\115\browser\DownLoad.xml

    Filesize

    76B

    MD5

    0f09ec0e44b12348c309f7748dafe977

    SHA1

    c3fd0f2d3a9d867f8a1016012d3c0a19223019ce

    SHA256

    d5a927499b2a7d219251f7873cba9ac04b33688b08a325834c831f10b49aeb7e

    SHA512

    cbb325d3e0d150005323edc75c0b50e09358e3b4c1e688f1f5074ebe532cbd4b7823486730abe4403a30f3fc068cbe03d0679a794ecf5e252a92f6d2d641a547

  • C:\Program Files (x86)\115\browser\Recent.ini

    Filesize

    208B

    MD5

    d5c974407da5f3f660bd1d781f723170

    SHA1

    c0a6225677adb9a70d85dce2a03c3503c19385ca

    SHA256

    06d4038fde569197ca10e75973457561e9ee5a26b54ccdb1d7424e46c567f19a

    SHA512

    ff042a86bf8b537e7c2adf645224468f6647488082a4df73f89a338d6eccde491f0df1c4fc950550da39f27b3ac0a1adef036ee704c9b6125de89a9cb4756bc2

  • C:\Program Files (x86)\115\browser\Recent.ini

    Filesize

    395B

    MD5

    4ca78e7a46b624bbedf780075521b713

    SHA1

    a93af4f7410353fbed10d48de0272ddf3a01c006

    SHA256

    249afd8a9e33a2e3565665a6b756a5b629e4bda63d03cd1f5ff1f401db889d87

    SHA512

    17da4f8bfe25645c9ba85f73bf2a6ac1db21b9f126264a2592dc07b127cd5a9ccf9970ed193cdc509f243539b49cf49553453eca8b8e678a6d45474dc3dda0cd

  • C:\Program Files (x86)\115\browser\cfg.ini

    Filesize

    136B

    MD5

    d86ab48bceb6346eec7aed9ce37a0b5d

    SHA1

    4a11c4541480291e9867e239c19afdc27bf0cd12

    SHA256

    48cab9f0049a125d35942a54b4a1bd1d084f73e5136004bf7430552fec9afb8c

    SHA512

    c611f95a593465618a554238d36f9d96edc50840bffac979777508cec2d6f159bbba04c2626f53efb8e07c0ecf12ef25c9f58831d4c7bb2c4cdd75576a1608e4

  • C:\Program Files (x86)\115\browser\cfg.ini

    Filesize

    136B

    MD5

    d86ab48bceb6346eec7aed9ce37a0b5d

    SHA1

    4a11c4541480291e9867e239c19afdc27bf0cd12

    SHA256

    48cab9f0049a125d35942a54b4a1bd1d084f73e5136004bf7430552fec9afb8c

    SHA512

    c611f95a593465618a554238d36f9d96edc50840bffac979777508cec2d6f159bbba04c2626f53efb8e07c0ecf12ef25c9f58831d4c7bb2c4cdd75576a1608e4

  • C:\Program Files (x86)\115\browser\setting.ini

    Filesize

    1KB

    MD5

    0ba9f36822fbf02b8144128d4b35a019

    SHA1

    35e14dae533dd38499a1c240c554e11c46dfd2fa

    SHA256

    53bd4b887ee8a5272b4cec17d638258eec0c6523dd6bcca408e5718966b4f1e4

    SHA512

    5d1cfc7ca65cca9784e9ef93fa42f9844e82bcfa49f3abf5f88466a22ccdb20813a5721dc417f5e825cf65b821c1f37e08eb88f1395a81387b266942bb5481f7

  • C:\Program Files (x86)\115\browser\uninst.exe

    Filesize

    48KB

    MD5

    4f3dfc7666c44d21eb870d576f2294c8

    SHA1

    57c07303cdb2274fc0898f273184ec31f6ce23d0

    SHA256

    3f0658eb0b7649bf04e579bee42de1873207643178273db0294f44c820a39f18

    SHA512

    0e3a2de65841cc78a0466b41266f9a1429c2fd1346e0a2d830163b309eacffebd5d5069d1a2628549318224d40ca58f5c2e0fee61c8ad2abfdd182ede6aafacd

  • C:\Users\Admin\AppData\Local\Temp\115br_pdf_31.exe

    Filesize

    663KB

    MD5

    e80df9a92f51f4a7060f5ccc7d056914

    SHA1

    819446da2af8ad8a5150fb854bb74b1b3dfa7ef1

    SHA256

    ce34d8aa4cacd4556b6d5f162b70bfecde9e94e7a36905188835cb43710184d5

    SHA512

    f972e8ed5658467b0ea275d33e109c1b0b8a8174f7139b3542538c6e36a599ca5c76519e199570a9cb7c7eb16fd633ed993f8cc974b8a3a489739b8c11a74927

  • C:\Users\Admin\AppData\Local\Temp\115br_pdf_31.exe

    Filesize

    663KB

    MD5

    e80df9a92f51f4a7060f5ccc7d056914

    SHA1

    819446da2af8ad8a5150fb854bb74b1b3dfa7ef1

    SHA256

    ce34d8aa4cacd4556b6d5f162b70bfecde9e94e7a36905188835cb43710184d5

    SHA512

    f972e8ed5658467b0ea275d33e109c1b0b8a8174f7139b3542538c6e36a599ca5c76519e199570a9cb7c7eb16fd633ed993f8cc974b8a3a489739b8c11a74927

  • \Program Files (x86)\115\browser\115br.exe

    Filesize

    920KB

    MD5

    bbcc427d62ec2f51b905b9597ccd0636

    SHA1

    a41b427cbb2f9012d998066e2a7ba28f3553cc87

    SHA256

    7db04a246c57555b91a68f72c9d3099417ac866371dbf8cf60501fd47ba789d9

    SHA512

    fb3014c8adb8c0f1d164ebf8670eef112795d004d9c5409f2e3c0153638cf7eb0713ce6ed85abbe12c294388dacddfe48683309d372d295b8a567af9c93072c2

  • \Program Files (x86)\115\browser\115br.exe

    Filesize

    920KB

    MD5

    bbcc427d62ec2f51b905b9597ccd0636

    SHA1

    a41b427cbb2f9012d998066e2a7ba28f3553cc87

    SHA256

    7db04a246c57555b91a68f72c9d3099417ac866371dbf8cf60501fd47ba789d9

    SHA512

    fb3014c8adb8c0f1d164ebf8670eef112795d004d9c5409f2e3c0153638cf7eb0713ce6ed85abbe12c294388dacddfe48683309d372d295b8a567af9c93072c2

  • \Program Files (x86)\115\browser\115br.exe

    Filesize

    920KB

    MD5

    bbcc427d62ec2f51b905b9597ccd0636

    SHA1

    a41b427cbb2f9012d998066e2a7ba28f3553cc87

    SHA256

    7db04a246c57555b91a68f72c9d3099417ac866371dbf8cf60501fd47ba789d9

    SHA512

    fb3014c8adb8c0f1d164ebf8670eef112795d004d9c5409f2e3c0153638cf7eb0713ce6ed85abbe12c294388dacddfe48683309d372d295b8a567af9c93072c2

  • \Program Files (x86)\115\browser\115br.exe

    Filesize

    920KB

    MD5

    bbcc427d62ec2f51b905b9597ccd0636

    SHA1

    a41b427cbb2f9012d998066e2a7ba28f3553cc87

    SHA256

    7db04a246c57555b91a68f72c9d3099417ac866371dbf8cf60501fd47ba789d9

    SHA512

    fb3014c8adb8c0f1d164ebf8670eef112795d004d9c5409f2e3c0153638cf7eb0713ce6ed85abbe12c294388dacddfe48683309d372d295b8a567af9c93072c2

  • \Program Files (x86)\115\browser\115br.exe

    Filesize

    920KB

    MD5

    bbcc427d62ec2f51b905b9597ccd0636

    SHA1

    a41b427cbb2f9012d998066e2a7ba28f3553cc87

    SHA256

    7db04a246c57555b91a68f72c9d3099417ac866371dbf8cf60501fd47ba789d9

    SHA512

    fb3014c8adb8c0f1d164ebf8670eef112795d004d9c5409f2e3c0153638cf7eb0713ce6ed85abbe12c294388dacddfe48683309d372d295b8a567af9c93072c2

  • \Program Files (x86)\115\browser\115br.exe

    Filesize

    920KB

    MD5

    bbcc427d62ec2f51b905b9597ccd0636

    SHA1

    a41b427cbb2f9012d998066e2a7ba28f3553cc87

    SHA256

    7db04a246c57555b91a68f72c9d3099417ac866371dbf8cf60501fd47ba789d9

    SHA512

    fb3014c8adb8c0f1d164ebf8670eef112795d004d9c5409f2e3c0153638cf7eb0713ce6ed85abbe12c294388dacddfe48683309d372d295b8a567af9c93072c2

  • \Program Files (x86)\115\browser\115br.exe

    Filesize

    920KB

    MD5

    bbcc427d62ec2f51b905b9597ccd0636

    SHA1

    a41b427cbb2f9012d998066e2a7ba28f3553cc87

    SHA256

    7db04a246c57555b91a68f72c9d3099417ac866371dbf8cf60501fd47ba789d9

    SHA512

    fb3014c8adb8c0f1d164ebf8670eef112795d004d9c5409f2e3c0153638cf7eb0713ce6ed85abbe12c294388dacddfe48683309d372d295b8a567af9c93072c2

  • \Users\Admin\AppData\Local\Temp\115br_pdf_31.exe

    Filesize

    663KB

    MD5

    e80df9a92f51f4a7060f5ccc7d056914

    SHA1

    819446da2af8ad8a5150fb854bb74b1b3dfa7ef1

    SHA256

    ce34d8aa4cacd4556b6d5f162b70bfecde9e94e7a36905188835cb43710184d5

    SHA512

    f972e8ed5658467b0ea275d33e109c1b0b8a8174f7139b3542538c6e36a599ca5c76519e199570a9cb7c7eb16fd633ed993f8cc974b8a3a489739b8c11a74927

  • \Users\Admin\AppData\Local\Temp\115br_pdf_31.exe

    Filesize

    663KB

    MD5

    e80df9a92f51f4a7060f5ccc7d056914

    SHA1

    819446da2af8ad8a5150fb854bb74b1b3dfa7ef1

    SHA256

    ce34d8aa4cacd4556b6d5f162b70bfecde9e94e7a36905188835cb43710184d5

    SHA512

    f972e8ed5658467b0ea275d33e109c1b0b8a8174f7139b3542538c6e36a599ca5c76519e199570a9cb7c7eb16fd633ed993f8cc974b8a3a489739b8c11a74927

  • \Users\Admin\AppData\Local\Temp\115br_pdf_31.exe

    Filesize

    663KB

    MD5

    e80df9a92f51f4a7060f5ccc7d056914

    SHA1

    819446da2af8ad8a5150fb854bb74b1b3dfa7ef1

    SHA256

    ce34d8aa4cacd4556b6d5f162b70bfecde9e94e7a36905188835cb43710184d5

    SHA512

    f972e8ed5658467b0ea275d33e109c1b0b8a8174f7139b3542538c6e36a599ca5c76519e199570a9cb7c7eb16fd633ed993f8cc974b8a3a489739b8c11a74927

  • \Users\Admin\AppData\Local\Temp\115br_pdf_31.exe

    Filesize

    663KB

    MD5

    e80df9a92f51f4a7060f5ccc7d056914

    SHA1

    819446da2af8ad8a5150fb854bb74b1b3dfa7ef1

    SHA256

    ce34d8aa4cacd4556b6d5f162b70bfecde9e94e7a36905188835cb43710184d5

    SHA512

    f972e8ed5658467b0ea275d33e109c1b0b8a8174f7139b3542538c6e36a599ca5c76519e199570a9cb7c7eb16fd633ed993f8cc974b8a3a489739b8c11a74927

  • \Users\Admin\AppData\Local\Temp\nsjAD43.tmp\System.dll

    Filesize

    11KB

    MD5

    c17103ae9072a06da581dec998343fc1

    SHA1

    b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

    SHA256

    dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

    SHA512

    d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

  • memory/944-68-0x0000000000000000-mapping.dmp

  • memory/1272-61-0x0000000000000000-mapping.dmp

  • memory/1348-56-0x0000000074F41000-0x0000000074F43000-memory.dmp

    Filesize

    8KB

  • memory/1716-80-0x0000000000000000-mapping.dmp