Analysis

  • max time kernel
    158s
  • max time network
    213s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-11-2022 23:03

General

  • Target

    81ec4b8488962c08dbf6258d97106981430c95df714a8c76848a67b34822fcb8.exe

  • Size

    4.4MB

  • MD5

    baee1d7c815fdc93659b5ed0aebdf6ba

  • SHA1

    d728d1eb875750f7b434b0349a44a58239b3be78

  • SHA256

    81ec4b8488962c08dbf6258d97106981430c95df714a8c76848a67b34822fcb8

  • SHA512

    2086d667c738d8eeb220edfef8ab6b8ceda159c4e820c3a957fbbf402e63aac42f833b654e456d6b307c77afc101551f73ca74752da5e791cca1545252a2fbfe

  • SSDEEP

    49152:E9aK6zTouxmBF0HDxup4FSetcZppWmD/M2BKQli9buOBqFRyoC3yE/Ac5mWxnmLB:qwToXj01cZpp1D/sbuOBqFkoWNAxens

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 5 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 8 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\81ec4b8488962c08dbf6258d97106981430c95df714a8c76848a67b34822fcb8.exe
    "C:\Users\Admin\AppData\Local\Temp\81ec4b8488962c08dbf6258d97106981430c95df714a8c76848a67b34822fcb8.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:4920
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "C:\Program Files (x86)\GoSave\ljnpb0BCVR9WaQ.x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:552
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\GoSave\ljnpb0BCVR9WaQ.x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:2180
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:3216
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
      1⤵
        PID:2892

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\Program Files (x86)\GoSave\ljnpb0BCVR9WaQ.dat

        Filesize

        4KB

        MD5

        91105884223725e325ad41069d956b24

        SHA1

        6af7a2649bc657e030ee01d618bfb4f766b94794

        SHA256

        5025dc8f58c11c440f931869acd605d087374d85bc7f8367d47a9646912a1655

        SHA512

        bc1aa114f5aefddfd8e368b31a580c40a066dd541717344e90724d6c0fb75e1d01e64e6362e9ebfa1e2ef52eed3c192b2651deca8c5ec09088c09eff0684f54a

      • C:\Program Files (x86)\GoSave\ljnpb0BCVR9WaQ.dll

        Filesize

        738KB

        MD5

        49961c7c9a7aef57f49adf50d1c810f6

        SHA1

        fc2078aeff5d5abee27c9e8a500cb2d6ae755b05

        SHA256

        c80abdc502d18db54137edc2680a498402c765999814b7fe1b2a7b69a64ce846

        SHA512

        8ad2c3dbd3b4390e4c49561f25ff2acdd4ab4468074e213f3efc81a598f71620e8f21fc87114623a6c0509997e47e1c4f5ffe703c7421ae313f7ba536df2772f

      • C:\Program Files (x86)\GoSave\ljnpb0BCVR9WaQ.tlb

        Filesize

        3KB

        MD5

        e3ab22d8beac0180520ab5289a64419b

        SHA1

        1456ba2c78b293e5a80185fefdf05f5dbe424937

        SHA256

        0d3342857b67678dd76e6a24e137f0d75ba399bb48bf5095d7e4f7dfa0bbe416

        SHA512

        c04163026ffa1c6fab34b4fdbf23702148c7c2a31dd356d26f9541027db078b6433aff3a5f749a209a3acbcf3a853a9b5f77984540e21be1f823ce92bcbfc4bf

      • C:\Program Files (x86)\GoSave\ljnpb0BCVR9WaQ.x64.dll

        Filesize

        872KB

        MD5

        337b97dbbcc7ad4d75fb5a90652e6de3

        SHA1

        50e50243af1819e62a7512d85e6dd67b8e1ed103

        SHA256

        b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

        SHA512

        dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

      • C:\Program Files (x86)\GoSave\ljnpb0BCVR9WaQ.x64.dll

        Filesize

        872KB

        MD5

        337b97dbbcc7ad4d75fb5a90652e6de3

        SHA1

        50e50243af1819e62a7512d85e6dd67b8e1ed103

        SHA256

        b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

        SHA512

        dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

      • C:\Program Files (x86)\GoSave\ljnpb0BCVR9WaQ.x64.dll

        Filesize

        872KB

        MD5

        337b97dbbcc7ad4d75fb5a90652e6de3

        SHA1

        50e50243af1819e62a7512d85e6dd67b8e1ed103

        SHA256

        b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

        SHA512

        dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

      • memory/552-138-0x0000000000000000-mapping.dmp

      • memory/2180-141-0x0000000000000000-mapping.dmp

      • memory/4920-132-0x0000000002E90000-0x0000000002F59000-memory.dmp

        Filesize

        804KB