Analysis

  • max time kernel
    24s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 19:43

General

  • Target

    792dc357035f28946bc110611cf90889039d02df0edf88268bd2fc11033a4762.exe

  • Size

    3.9MB

  • MD5

    0adc478edc0414bb8a2fd8fd1bb16834

  • SHA1

    669e9c2ca6788daa82e910316ad1e9f9c3271050

  • SHA256

    792dc357035f28946bc110611cf90889039d02df0edf88268bd2fc11033a4762

  • SHA512

    de8c8614673313afe64b74611fd3206419315fdef7628ab4150b1beeb3da6176010ff442cc324f4f81a0e770a257675774ebc158fc1b52f3d66c2d4fcfbea714

  • SSDEEP

    98304:MyyuPkNb1A/r1e+vrB4O/Kcb+hsOQj5IFzJEshNiPemHRNGF0W6JONwxXpUswO1y:NkNK/rxSQWevqiA

Malware Config

Signatures

  • Registers COM server for autorun 1 TTPs 4 IoCs
  • Loads dropped DLL 3 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.

  • Drops Chrome extension 3 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 8 IoCs

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

  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 8 IoCs
  • Modifies Internet Explorer settings 1 TTPs 8 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\792dc357035f28946bc110611cf90889039d02df0edf88268bd2fc11033a4762.exe
    "C:\Users\Admin\AppData\Local\Temp\792dc357035f28946bc110611cf90889039d02df0edf88268bd2fc11033a4762.exe"
    1⤵
    • Loads dropped DLL
    • Drops Chrome extension
    • Installs/modifies Browser Helper Object
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:1728
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "C:\Program Files (x86)\GGoSave\K8BusXGc.x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1760
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\GGoSave\K8BusXGc.x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:1772

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files (x86)\GGoSave\K8BusXGc.dat
    Filesize

    4KB

    MD5

    c158d3a402b4b639faa8400caba14ee5

    SHA1

    6b59dfc19ba19e16c7130780ce5ca6a25a11d7cb

    SHA256

    200b793535e0696699aabad0abd27a555d3f40a60250c516409e427889ad920b

    SHA512

    ebe9724a87a211282454ba3dcd9e08c991d828fd7196bba1ea1325fb80a2359b8945a354bd94bb21f0b099b183eebec04bfae43a6e612cbbeef355b32d0c3d24

  • C:\Program Files (x86)\GGoSave\K8BusXGc.tlb
    Filesize

    3KB

    MD5

    123d8e428b231b034495720766d9db44

    SHA1

    20db932b0f9fb5045ae866259d4c4c2650e519fe

    SHA256

    e5a0972cb89bbe9ca59f02a11f145178b7cfee9d43cd2e6729b4d4b9c1809d1f

    SHA512

    79444ea1e1eecf5adaef18c229516bb095898a7ceed229133a6d6e7082ce02c9e40612ca2b3474d8934f47f41077784cf252ca5832faf0b7063d8cb3c31a1afa

  • C:\Program Files (x86)\GGoSave\K8BusXGc.x64.dll
    Filesize

    693KB

    MD5

    036a783b0d4af93086c9bef9bf1ed7d8

    SHA1

    58624b183fda19f285365c464914d8c342f693e5

    SHA256

    1cb50065e24f17a830d511888a1d857556e804ad0ad82d67953b3cbf04a406ec

    SHA512

    5f25cd28cad3bdd19475d2adfe7385cf177f0177010cd30d2cb03b237f011ae14b993a61466b71fa81613b51664f6b7c4ece954e78d667a17146e9aa38752062

  • \Program Files (x86)\GGoSave\K8BusXGc.dll
    Filesize

    612KB

    MD5

    4e8d65edf539af96ec6861d8445573ae

    SHA1

    1b4554cd7c108aa09bb3aed009ac8440c0f8bb93

    SHA256

    f7931fcce1da10bbc25b3aff0b72a6744a7e454d9fc5d83f9c612e142eafee87

    SHA512

    a0ffd39e17e3e39d12d36bacebd21ac309f09b36e26b786d54e0218d6c41c01a3c3ecfe37aa7c4636f8be3c6821f21a21a3ba327d93fbddcb7adfca591838455

  • \Program Files (x86)\GGoSave\K8BusXGc.x64.dll
    Filesize

    693KB

    MD5

    036a783b0d4af93086c9bef9bf1ed7d8

    SHA1

    58624b183fda19f285365c464914d8c342f693e5

    SHA256

    1cb50065e24f17a830d511888a1d857556e804ad0ad82d67953b3cbf04a406ec

    SHA512

    5f25cd28cad3bdd19475d2adfe7385cf177f0177010cd30d2cb03b237f011ae14b993a61466b71fa81613b51664f6b7c4ece954e78d667a17146e9aa38752062

  • \Program Files (x86)\GGoSave\K8BusXGc.x64.dll
    Filesize

    693KB

    MD5

    036a783b0d4af93086c9bef9bf1ed7d8

    SHA1

    58624b183fda19f285365c464914d8c342f693e5

    SHA256

    1cb50065e24f17a830d511888a1d857556e804ad0ad82d67953b3cbf04a406ec

    SHA512

    5f25cd28cad3bdd19475d2adfe7385cf177f0177010cd30d2cb03b237f011ae14b993a61466b71fa81613b51664f6b7c4ece954e78d667a17146e9aa38752062

  • memory/1728-54-0x0000000076091000-0x0000000076093000-memory.dmp
    Filesize

    8KB

  • memory/1728-55-0x0000000000230000-0x00000000002D5000-memory.dmp
    Filesize

    660KB

  • memory/1760-72-0x0000000000000000-mapping.dmp
  • memory/1772-76-0x0000000000000000-mapping.dmp
  • memory/1772-77-0x000007FEFBCA1000-0x000007FEFBCA3000-memory.dmp
    Filesize

    8KB