Analysis

  • max time kernel
    36s
  • max time network
    42s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    01/12/2022, 06:41

General

  • Target

    a9fbb17b23e3f96f7951ea9e55b5a00e0dca6f7432a8609d2f701c4f9de2f5b7.exe

  • Size

    250KB

  • MD5

    5ddb00b5bfc816d74d405a12703518d5

  • SHA1

    3294bd3f57e9eecb2fa855dbebcc04ac2f8746eb

  • SHA256

    a9fbb17b23e3f96f7951ea9e55b5a00e0dca6f7432a8609d2f701c4f9de2f5b7

  • SHA512

    47c14ee2641580f6b0f4f1c1c310caea9fcfaa8cc820d6c7096e62d519d24fd59984fc4e0b06fa20b0cebe2e547ac4aad40c88840dfb9efd039f63b953c63d93

  • SSDEEP

    6144:h1OgDPdkBAFZWjadD4s52xoH9VStQDVR84XVR16pzy:h1OgLdaOD+tQDVq4XVR1GG

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Installs/modifies Browser Helper Object 2 TTPs 4 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Enumerates physical storage devices 1 TTPs

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

  • NSIS installer 8 IoCs
  • Modifies registry class 63 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a9fbb17b23e3f96f7951ea9e55b5a00e0dca6f7432a8609d2f701c4f9de2f5b7.exe
    "C:\Users\Admin\AppData\Local\Temp\a9fbb17b23e3f96f7951ea9e55b5a00e0dca6f7432a8609d2f701c4f9de2f5b7.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1988
    • C:\Users\Admin\AppData\Local\Temp\7zS7485.tmp\506892dd14c95.exe
      .\506892dd14c95.exe /s
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      • System policy modification
      PID:1984

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\7zS7485.tmp\[email protected]\bootstrap.js

          Filesize

          2KB

          MD5

          a9736a2bdbeabcf9d860103e235e87cf

          SHA1

          19866fabdbc4b214656b4328b74044abce59b044

          SHA256

          e753c62ba622808decc1f8aae56895072e1150be5cda1fecee71b7dba57f4942

          SHA512

          bdbfe450129e1576cf009283eb2d525d35d4eda1c897f05b2590fed40d6bbccef8871fa2e7894fff534f68c7a9508e0a5770fc38696a8a86876cd4ae499cbc46

        • C:\Users\Admin\AppData\Local\Temp\7zS7485.tmp\[email protected]\chrome.manifest

          Filesize

          116B

          MD5

          0a7c3f6a7733ee0ff1dfa632ec6e4b2d

          SHA1

          2192398073e30447813e21086d0f8b65a1e45cdd

          SHA256

          69278d57abdbf310171e8f9a3f6745e171052de472cb5f911e40f2e719f76c69

          SHA512

          07908c92fb6c6ee4206c52ef9930ce284522832402d90227279235981995ef4b496a05e6b7a9b925c522d0c4d3e61816896eb982da22cbce6965d5918efcd0aa

        • C:\Users\Admin\AppData\Local\Temp\7zS7485.tmp\[email protected]\content\bg.js

          Filesize

          8KB

          MD5

          50cd958a24edacf48cfa0555d9c15d24

          SHA1

          f62c1e71d50a6fd89d531d92368d48b0d8a0a23e

          SHA256

          f5da79ee1f2a30cb221dc5ad27e1e88828cd64b070881b4bae9446975f7c00dc

          SHA512

          c35bb712c7ffb8dd25d11902f14454235245c710072079907128554274777f266827db2c083d2de79b3ca9cc507de08015fdd5470c6d42f19583e6243c2368fc

        • C:\Users\Admin\AppData\Local\Temp\7zS7485.tmp\[email protected]\content\zy.xul

          Filesize

          225B

          MD5

          ad182a772cd397df8b0f72a29eed9d92

          SHA1

          71a4e694ee322c3c5f175afe9397af96fb640d8a

          SHA256

          b93e1c676be6c5ad389f2145e5e2e9348b1bc6ba88a92d09994cd35a7528f8a8

          SHA512

          6fdbabbe2b5d8d495b01e1af89600ce65016eb7776cb99150c8d3092e33cee5abbbcb4188ca926b1ceaba0069cc96217b038f4c559a43445d6d6bcbe07bab29f

        • C:\Users\Admin\AppData\Local\Temp\7zS7485.tmp\[email protected]\install.rdf

          Filesize

          717B

          MD5

          f23b108cee260d619f443463a9ad1f5e

          SHA1

          9928ce378130b4bab5d06c4870506e4113f5f9c9

          SHA256

          8c0a37ce2f3a91155ff4bb27f557646483a05708a1e658c1276daa6cb6f4f96f

          SHA512

          e82e8148db3045f66c85ef9b2739f4a3f50752aaaac6acacb14dcb706f8272c2f6a36cd8ea2bfab1840e4b6ed66823e60e556ff85d9dd3a47f9e79703a60b4b7

        • C:\Users\Admin\AppData\Local\Temp\7zS7485.tmp\506892dd14c95.exe

          Filesize

          65KB

          MD5

          4ccf1a317aa8539c857835e4ebe9c806

          SHA1

          223b73d09d7398f40aff3ccc569e66cae3886ee9

          SHA256

          4529889c5575cd4e28b3691f0489c806442840292a9e459ada4dab3e024cc242

          SHA512

          ecab68799b5a51c7d2a3735a9b3c17ba20a315618aa9575a5b02d5d4535716966031a26982012669f069dbfd8a6ab62f95737b7c402bf680f3a498900f627312

        • C:\Users\Admin\AppData\Local\Temp\7zS7485.tmp\506892dd14c95.exe

          Filesize

          65KB

          MD5

          4ccf1a317aa8539c857835e4ebe9c806

          SHA1

          223b73d09d7398f40aff3ccc569e66cae3886ee9

          SHA256

          4529889c5575cd4e28b3691f0489c806442840292a9e459ada4dab3e024cc242

          SHA512

          ecab68799b5a51c7d2a3735a9b3c17ba20a315618aa9575a5b02d5d4535716966031a26982012669f069dbfd8a6ab62f95737b7c402bf680f3a498900f627312

        • C:\Users\Admin\AppData\Local\Temp\7zS7485.tmp\506892dd14ccd.ocx

          Filesize

          151KB

          MD5

          c78c6140cb88ef4dc94f999291bb5ab1

          SHA1

          65b47ed5ec889e0e558c79a13a81193fc59b8ce9

          SHA256

          6cfc7fb43715fb13c53ab2a29b68f3a0a0f285c85d1b1443f2c5e73526646851

          SHA512

          ac8865cb1bec889ba493cad3f4c4bac87bfb2fdb15c518626ffa5f8ac6799a6f5c84f358d3e7d35824d6aba29af46c1078acdf30c3bd93981be61312baf6bd26

        • C:\Users\Admin\AppData\Local\Temp\7zS7485.tmp\506892dd14d06.html

          Filesize

          4KB

          MD5

          f3494fef34d6b4c7ccce5a2f91af73fc

          SHA1

          4b45404104615f311abfae2afc88edfee514af1f

          SHA256

          2e390a35917d19ce6b46bf5bdb8f6d0d1d1f13d105918fec0ed145f07cd3132f

          SHA512

          fab952669aab6a216fb535b8cc468330e903b49de36be5bf29bf66de309cd1b6d85f48c74f26e447debbedcc356817bad92e068170e747a2266a7dee3632c5c2

        • C:\Users\Admin\AppData\Local\Temp\7zS7485.tmp\506892dd14d26.js

          Filesize

          9B

          MD5

          99fa5d714d971a49b67de27e0d8871be

          SHA1

          d0621e846ea60fa8d0b2c8e622e495af49cd7359

          SHA256

          f560d76474380da948a0c5ab8682dc026822d9685268c592f315224b1b968bf6

          SHA512

          2fec19e4f2a974227922a7e057890141523ae73fbfa127f9e8cd00dff71b29abb93cb865c6d74ecf3df8bca440c558d4fbf2f80e82cc9636320ab5edb95ebad5

        • C:\Users\Admin\AppData\Local\Temp\7zS7485.tmp\gbkhmmigklkcnhdiimmgifkfnolbncef.crx

          Filesize

          7KB

          MD5

          bd88d2d50a6dcd8a69a6fd3d50848307

          SHA1

          52496cd4c03e46b86006f4dfb0659000343ade5f

          SHA256

          e213f9d4041e7fb31e50c029e57986bcefc65e0d73813478a0cdb2b1b9eeaded

          SHA512

          71cd7f9125f5fb94671624706c82887261127be3ae19e5ea68bac34329a8a068c74f29df360193c8d3683c3eb08822e63331065ca839adef5b847eed3609beba

        • C:\Users\Admin\AppData\Local\Temp\7zS7485.tmp\settings.ini

          Filesize

          903B

          MD5

          ceb303218b2d8ad1801c2f57a33058ca

          SHA1

          f4438cae34e5f492b8b373bcf9cb773ec8f8d844

          SHA256

          1f381b5441002fad2762c7abb2c53d9f01585ec9a8476115fb93e4261e561543

          SHA512

          a17aa86fb4ae2f23038215da663b7c97096793c6e2ef4bcc330991664b298ff8bdb32c6ba1869661d4fdea5e3e96dcef938d8e331950222840b9bb96716a47eb

        • \ProgramData\wxDownload\506892dd14ccd.ocx

          Filesize

          151KB

          MD5

          c78c6140cb88ef4dc94f999291bb5ab1

          SHA1

          65b47ed5ec889e0e558c79a13a81193fc59b8ce9

          SHA256

          6cfc7fb43715fb13c53ab2a29b68f3a0a0f285c85d1b1443f2c5e73526646851

          SHA512

          ac8865cb1bec889ba493cad3f4c4bac87bfb2fdb15c518626ffa5f8ac6799a6f5c84f358d3e7d35824d6aba29af46c1078acdf30c3bd93981be61312baf6bd26

        • \ProgramData\wxDownload\uninstall.exe

          Filesize

          48KB

          MD5

          a724dac649142fef71fe4b529684e969

          SHA1

          e2878e84886ec53a1332ad969a825062526b5cd4

          SHA256

          b58c58b5073034d74c5d93902bbb9d402be063e907bdf77115b55bbb99af21dc

          SHA512

          9f475ad52fa2b7f82e74df87c02e42f937b5e3b62773b7d51cb53facfcc8b4934ad3c2fc21496cfabaa4dd103a309ed5cccad1ad3d6037f6c4f3a540e3e9d5b3

        • \Users\Admin\AppData\Local\Temp\7zS7485.tmp\506892dd14c95.exe

          Filesize

          65KB

          MD5

          4ccf1a317aa8539c857835e4ebe9c806

          SHA1

          223b73d09d7398f40aff3ccc569e66cae3886ee9

          SHA256

          4529889c5575cd4e28b3691f0489c806442840292a9e459ada4dab3e024cc242

          SHA512

          ecab68799b5a51c7d2a3735a9b3c17ba20a315618aa9575a5b02d5d4535716966031a26982012669f069dbfd8a6ab62f95737b7c402bf680f3a498900f627312

        • \Users\Admin\AppData\Local\Temp\nst77E0.tmp\UserInfo.dll

          Filesize

          4KB

          MD5

          7579ade7ae1747a31960a228ce02e666

          SHA1

          8ec8571a296737e819dcf86353a43fcf8ec63351

          SHA256

          564c80dec62d76c53497c40094db360ff8a36e0dc1bda8383d0f9583138997f5

          SHA512

          a88bc56e938374c333b0e33cb72951635b5d5a98b9cb2d6785073cbcad23bf4c0f9f69d3b7e87b46c76eb03ced9bb786844ce87656a9e3df4ca24acf43d7a05b

        • memory/1988-54-0x0000000075A91000-0x0000000075A93000-memory.dmp

          Filesize

          8KB