Analysis

  • max time kernel
    146s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/12/2023, 09:46

General

  • Target

    64c8b0772fc9c2077c629c5f4f3e7afb.exe

  • Size

    313KB

  • MD5

    64c8b0772fc9c2077c629c5f4f3e7afb

  • SHA1

    a6432eabbc8de69494905126571d373b24c352d9

  • SHA256

    a75627a2f9f639e5be1c10862f678818bdf5bef2a873d4b55f29f6d91c7d7dcb

  • SHA512

    1e742a601de3796b515fdae3f75f8ff71414b10b1ce27a8d4bba3ddd7a4a1ccd467fb068e889af0cbd3cf0ffbd4f7d4b5b69be73f66a356ba4cdb6aade340565

  • SSDEEP

    6144:91OgDPdkBAFZWjadD4sS0lotSH2CCjXqVX0QCZRYGw0Tc49AqQcurn+8CBaM2UH:91OgLdaVLSHeM0JZRYPi/9ANn+mM2U

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 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).

  • NSIS installer 4 IoCs
  • Modifies registry class 63 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\64c8b0772fc9c2077c629c5f4f3e7afb.exe
    "C:\Users\Admin\AppData\Local\Temp\64c8b0772fc9c2077c629c5f4f3e7afb.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3504
    • C:\Users\Admin\AppData\Local\Temp\7zS5237.tmp\setup.exe
      .\setup.exe /s
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      • System policy modification
      PID:4900

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\Bcool\uninstall.exe

          Filesize

          46KB

          MD5

          2628f4240552cc3b2ba04ee51078ae0c

          SHA1

          5b0cca662149240d1fd4354beac1338e97e334ea

          SHA256

          03c965d0bd9827a978ef4080139533573aa800c9803599c0ce91da48506ad8f6

          SHA512

          6ecfcc97126373e82f1edab47020979d7706fc2be39ca792e8f30595133cd762cd4a65a246bee9180713e40e61efa373ecfb5eb72501ee18b38f13e32e61793b

        • C:\Users\Admin\AppData\Local\Temp\7zS5237.tmp\[email protected]\chrome.manifest

          Filesize

          114B

          MD5

          a5016a6aa78028029fd2f804ca0d81fa

          SHA1

          4522b21bab9edbf0967658cb637553eba1ee0552

          SHA256

          c4eb4f608a6dfd823b498f653b2d2086adde83176dd68071e0a25d1b045f81a2

          SHA512

          2f3541dbe75fea9f3df63c1dee0a576e9ddf96af0dead483555f42058c449f7fa04d75c63b7b11bff3b6ab1ffdd836e3537a5f36533bef95ecc03273d1f54f28

        • C:\Users\Admin\AppData\Local\Temp\7zS5237.tmp\[email protected]\content\indexeddb.js

          Filesize

          1KB

          MD5

          0d2843b6f9c1b5f397d67f9b95db6947

          SHA1

          78ee29afcc02877526e59c0e1e9c2edf1a284f2c

          SHA256

          88e79f064b25f13a0561dc99a7e983fc02c56b340e91c8fa4a9b352d5d5237fc

          SHA512

          9f7c5f91af72f481013a29ac2b622d1165ded68679657ce79b5dbb967b3c0dbd1c6287b58b1ed520932c5c527e076eaaca441a239c96f683b60d76d2b9c2c8ce

        • C:\Users\Admin\AppData\Local\Temp\7zS5237.tmp\[email protected]\content\jquery.js

          Filesize

          91KB

          MD5

          4bab8348a52d17428f684ad1ec3a427e

          SHA1

          56c912a8c8561070aee7b9808c5f3b2abec40063

          SHA256

          3739b485ac39b157caa066b883e4d9d3f74c50beff0b86cd8a24ce407b179a23

          SHA512

          a693069c66d8316d73a3c01ed9e6a4553c9b92d98b294f0e170cc9f9f5502c814255f5f92b93aeb07e0d6fe4613f9a1d511e1bfd965634f04e6cf18f191a7480

        • C:\Users\Admin\AppData\Local\Temp\7zS5237.tmp\[email protected]\content\jsext.js

          Filesize

          6KB

          MD5

          0e83ce5e3f75e6e010cd06e78b60f1b1

          SHA1

          ee3b9c06fe97389361da6c31050c20e2c096fa2f

          SHA256

          118eafa60a73a5a05047c1dad3e42f29ffcad6124ae598a9572b775170011cce

          SHA512

          1c1d6aba148484507cf4bf582ffdb2e6204069659db0cf26250c08479888a18e02e0eece0f481431295f317a6bcc769f7930cd521f10c01346a98f419928d2bc

        • C:\Users\Admin\AppData\Local\Temp\7zS5237.tmp\[email protected]\content\lsdb.js

          Filesize

          1KB

          MD5

          dbd25d55df91e8b364b4e83252168fce

          SHA1

          e522ab8d501d8bdbf75604b879c5ed1c9ad15b50

          SHA256

          e3d90c1c3ec9e5f72505626f98add1c6ba871501954265680927f26102ecd638

          SHA512

          0c760480db771ea1a31a6c3e376fb6cc716a67ebff2a4f81cfb1970158a417dd567469c4f4ff13e338f4f93faeae562c9e2e4bca893b9537eb6cecce8909a72f

        • C:\Users\Admin\AppData\Local\Temp\7zS5237.tmp\[email protected]\content\prfdb.js

          Filesize

          1KB

          MD5

          e100e82af219553e38d499e50d26c204

          SHA1

          6521b7b588db2437d4e4f3d8c54d492b32ec2650

          SHA256

          e80e1706503daca5daa19cb973447f81331cc2179f1ddbac167342cd92f3f403

          SHA512

          8ba7e6c9b24be391155f05337839e9f8f78bb89318406a0b05cd9033cf5d1c88a0a92e7e66cb49862d5a6d06ab4931922acee7b22f3681f34a70bae9f5d7bb19

        • C:\Users\Admin\AppData\Local\Temp\7zS5237.tmp\[email protected]\content\sqlite.js

          Filesize

          1KB

          MD5

          5853724d8843ec5b5430233ed45ce43d

          SHA1

          612736185ed060e1a35abcc399b7505289100372

          SHA256

          23fbe46bdb170b9a5b7bdbc7c1940bcc4443095d794f3a591d6ea7e811f54849

          SHA512

          6e6ce0123b72fbaa2c13b7807d47f8dec95adcf011d4932c92c7172b89b6906eb08a5837b41f481d6e9e5d33470422b4e46b77e694cb98a69d2caddc653e19d5

        • C:\Users\Admin\AppData\Local\Temp\7zS5237.tmp\[email protected]\content\wx.xul

          Filesize

          228B

          MD5

          4131249bd379f2d4c8ccd33035822345

          SHA1

          149fabfd1e2b9e20209c4636730d90752abf89ea

          SHA256

          cfabeff802f35d0ad615026b66e16fb301605c0f7f533f9457819bed2375dabc

          SHA512

          09d2a8b3d357ef3b6b2b21b0cacb4f35f124c6d72d09393e1a3dcafc16a951e90e3517d35e1b7229599cd860e0094fa920af100bb7377f8b18f14f5677963172

        • C:\Users\Admin\AppData\Local\Temp\7zS5237.tmp\[email protected]\install.rdf

          Filesize

          668B

          MD5

          e4d6a3ee4966a1c609b75aff3f9fd851

          SHA1

          192234f23144c0ac8b5828303705f57cd205c9be

          SHA256

          a89c3db8d8517889d8028ea5ef0c26afbf5ebe2a319adc5cf3832113a20aed3c

          SHA512

          3a09ad0d2aaefdab612b5d8dc03e360262e000e1ef194be21d7279c922dd23b040c2705beab349a5c94f1ba43c51733c2c0e213efbeb2720456338eba8f29952

        • C:\Users\Admin\AppData\Local\Temp\7zS5237.tmp\background.html

          Filesize

          4KB

          MD5

          674ea48f4af7d597a6618f513c805c77

          SHA1

          93c253fc6e0cf45ed5cae4a26cff672dc00aa9c5

          SHA256

          2626e58e00ac0b5afdc900c6e1d9dfddf666c5a9fe8bf31d86869a2d2c7699f6

          SHA512

          b21dcfa6e80c9736764a46cb145e706ea95df0a7b44595f92ed1309a6d77cd7da74295f7bd545e1602b16b4b73a499c42ce0e1b6ff9c60d69bee1cf865fc49e2

        • C:\Users\Admin\AppData\Local\Temp\7zS5237.tmp\bhoclass.dll

          Filesize

          137KB

          MD5

          ac13c733379328f86568f6e514c2f7f8

          SHA1

          338901240fedcef4e3892fd4c723c89154f4de05

          SHA256

          7bf09b5c2a9b6348227199c1b3951b57907ca6a5c215a04ad8d5e43232f5b562

          SHA512

          35f69a82694a2ea4268a3dde7940af6bd1c87a32d93a72723464f90e4e818805be9e80872469d1cc29150a9aac872fc78613a584baa1327dfa8478c2de5672c4

        • C:\Users\Admin\AppData\Local\Temp\7zS5237.tmp\content.js

          Filesize

          386B

          MD5

          3fcec8fa38a822627d4ecf2359868c49

          SHA1

          490e2ed58feb64ff77c11047ef9345ce99068da7

          SHA256

          6b866a3fb717c3b73357309c25c0e53060addd3fc529f0662397c869155e8b89

          SHA512

          a7eac0ae9b1171c02296a1dacbc82bf1d93657d75bcc86cba7041e90d82d177f50e4366e55ffa9246e5f3d7b409e7d24f25ad4eef2dbb1b29a3ba32011a6bbb2

        • C:\Users\Admin\AppData\Local\Temp\7zS5237.tmp\mpgnihpjmmfnnmebpclmopaiigjajehn.crx

          Filesize

          37KB

          MD5

          2a822d67b0c44f6e10372aa1981f13be

          SHA1

          a7bcc99f225ebf01eeebc55e5d3540fbdcc74773

          SHA256

          6100763ff6a8dd3d1355302d891241a7958d682f13fef14f3ba73e974a3806a0

          SHA512

          34d6df2de13f66710c88ce68861357361e2a6e8f44bd8610290bd7c305e94a3ae1989c958337190eaa419e42d835560044b5643277941c85301ba8c6676f3596

        • C:\Users\Admin\AppData\Local\Temp\7zS5237.tmp\settings.ini

          Filesize

          592B

          MD5

          b03b6c090fe877a799bab3548e99ac8e

          SHA1

          52edb321d23ee4021702c784e6291f006444eb90

          SHA256

          aff00105839bdaca20554b6b1253edd539909f9c58703d160555b19c2f5f3cbc

          SHA512

          57e279b3a81352dae9aaf89fc55630c86640df847f594c37dbb428f5e8baed6dc04916b87a3c83384224a031710d3207842db847dd69feee2cf2996a2da2d1f2

        • C:\Users\Admin\AppData\Local\Temp\7zS5237.tmp\setup.exe

          Filesize

          61KB

          MD5

          201d2311011ffdf6c762fd46cdeb52ab

          SHA1

          65c474ca42a337745e288be0e21f43ceaafd5efe

          SHA256

          15c0e4fd6091cda70fa308ea5ee956996f6eb23d24e44700bd5c74bf111cf2aa

          SHA512

          235d70114f391d9e7a319d94bdfc49665d147723379de7487ef76cfc968f7faa3191153b32ba1ab466caeeeeef4852381529a168c3acca9a8d5a26dfe0436f6b