Analysis

  • max time kernel
    126s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-11-2022 05:40

General

  • Target

    003b058b2e52088abfe019bea89f6313bf74410f8730edccec0c7b0a6fef340d.exe

  • Size

    4.5MB

  • MD5

    ae2deccce2383c22134044d4419a9205

  • SHA1

    78dd1483b221cf78825171dee4c2326531623492

  • SHA256

    003b058b2e52088abfe019bea89f6313bf74410f8730edccec0c7b0a6fef340d

  • SHA512

    b671f909398e8536039ebc8052d6d20eaa7989d43b272eee38939dd1c0503b69b1e12414798678605ddbd30404fb4aa33fffcf9b372449b4baeccb7212152cfd

  • SSDEEP

    49152:LlkQ3etW30mzG0Paxup4LZAhdGKvghxfki1Ec7SKGjSlM/Zf0weeDNxL4:bOtWrq0XKKcn7SKGj8MNtLNxL

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\003b058b2e52088abfe019bea89f6313bf74410f8730edccec0c7b0a6fef340d.exe
    "C:\Users\Admin\AppData\Local\Temp\003b058b2e52088abfe019bea89f6313bf74410f8730edccec0c7b0a6fef340d.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:2288
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "C:\Program Files (x86)\GoSave\AO3xuCtDO3naq0.x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4816
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\GoSave\AO3xuCtDO3naq0.x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:3864
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:32
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
      1⤵
        PID:4772

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Program Files (x86)\GoSave\AO3xuCtDO3naq0.dat

        Filesize

        4KB

        MD5

        9d020a88ba1919373d214e256f9a0be0

        SHA1

        062fbeb0762fcef41ef1a034b96bcfb0368f2096

        SHA256

        18963a592fa4b3b80bbee3d3ff0565f712c2de7788b5b668d90e88f785d48af6

        SHA512

        e03f82469f1f18d01ff114baa2826e73005c31cdc5f0da99d49d592b2ca66d1f5b51db9697f0788fc77f1ebde82fbdafaf93bf47f9fa463e9fb515f28c3b5815

      • C:\Program Files (x86)\GoSave\AO3xuCtDO3naq0.dll

        Filesize

        738KB

        MD5

        49961c7c9a7aef57f49adf50d1c810f6

        SHA1

        fc2078aeff5d5abee27c9e8a500cb2d6ae755b05

        SHA256

        c80abdc502d18db54137edc2680a498402c765999814b7fe1b2a7b69a64ce846

        SHA512

        8ad2c3dbd3b4390e4c49561f25ff2acdd4ab4468074e213f3efc81a598f71620e8f21fc87114623a6c0509997e47e1c4f5ffe703c7421ae313f7ba536df2772f

      • C:\Program Files (x86)\GoSave\AO3xuCtDO3naq0.tlb

        Filesize

        3KB

        MD5

        e3ab22d8beac0180520ab5289a64419b

        SHA1

        1456ba2c78b293e5a80185fefdf05f5dbe424937

        SHA256

        0d3342857b67678dd76e6a24e137f0d75ba399bb48bf5095d7e4f7dfa0bbe416

        SHA512

        c04163026ffa1c6fab34b4fdbf23702148c7c2a31dd356d26f9541027db078b6433aff3a5f749a209a3acbcf3a853a9b5f77984540e21be1f823ce92bcbfc4bf

      • C:\Program Files (x86)\GoSave\AO3xuCtDO3naq0.x64.dll

        Filesize

        872KB

        MD5

        337b97dbbcc7ad4d75fb5a90652e6de3

        SHA1

        50e50243af1819e62a7512d85e6dd67b8e1ed103

        SHA256

        b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

        SHA512

        dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

      • C:\Program Files (x86)\GoSave\AO3xuCtDO3naq0.x64.dll

        Filesize

        872KB

        MD5

        337b97dbbcc7ad4d75fb5a90652e6de3

        SHA1

        50e50243af1819e62a7512d85e6dd67b8e1ed103

        SHA256

        b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

        SHA512

        dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

      • C:\Program Files (x86)\GoSave\AO3xuCtDO3naq0.x64.dll

        Filesize

        872KB

        MD5

        337b97dbbcc7ad4d75fb5a90652e6de3

        SHA1

        50e50243af1819e62a7512d85e6dd67b8e1ed103

        SHA256

        b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

        SHA512

        dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

      • memory/2288-132-0x0000000003790000-0x0000000003859000-memory.dmp

        Filesize

        804KB

      • memory/3864-141-0x0000000000000000-mapping.dmp

      • memory/4816-138-0x0000000000000000-mapping.dmp