Analysis

  • max time kernel
    185s
  • max time network
    189s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-11-2022 17:21

General

  • Target

    ec6f2df3e3569e3e9f7e4355565052ac2c8bff24859cb747ff48ac7587adcb59.exe

  • Size

    4.5MB

  • MD5

    5b79685571bdf00feb3154f8718390be

  • SHA1

    f841c70d3d812f01d452a458b4702c7334dd6399

  • SHA256

    ec6f2df3e3569e3e9f7e4355565052ac2c8bff24859cb747ff48ac7587adcb59

  • SHA512

    59d45c8f33818dbf445f4f508be99488c8f97a8fdf917819778d0525ff54f1902722c5bab6e9e57b85ceeecf75f8511f2baa0987d004634a7b7637bf3dbb8ef9

  • SSDEEP

    98304:fOJE/tU1M0kpthCzP5EP2iQ+oWNAxenT:GJdP5p5BonT

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
  • Program crash 1 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\ec6f2df3e3569e3e9f7e4355565052ac2c8bff24859cb747ff48ac7587adcb59.exe
    "C:\Users\Admin\AppData\Local\Temp\ec6f2df3e3569e3e9f7e4355565052ac2c8bff24859cb747ff48ac7587adcb59.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:4388
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "C:\Program Files (x86)\GoSave\hz1cQetSgC06Du.x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4416
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\GoSave\hz1cQetSgC06Du.x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:4548
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4388 -s 1516
      2⤵
      • Program crash
      PID:2140
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:4200
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
      1⤵
        PID:4868
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 4388 -ip 4388
        1⤵
          PID:4484

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Program Files (x86)\GoSave\hz1cQetSgC06Du.dat

          Filesize

          4KB

          MD5

          775ee829ba610615aa4d1e3d75dccb07

          SHA1

          b6c3189ad489a7341ca2e0c026f7172a5fe5d3b1

          SHA256

          a0ae4d9df3c5e6a4ac11a33018266564768ebf30940d64026dc8f99469294846

          SHA512

          0870bf04ec14cccfeeb8b0648ce4c59851d7969195a0b7cc4ff9f629e3c885f746ff2591832a698bbcc2469cf11aedd0b4d9683f9df5afaf54080f36e5968815

        • C:\Program Files (x86)\GoSave\hz1cQetSgC06Du.dll

          Filesize

          738KB

          MD5

          49961c7c9a7aef57f49adf50d1c810f6

          SHA1

          fc2078aeff5d5abee27c9e8a500cb2d6ae755b05

          SHA256

          c80abdc502d18db54137edc2680a498402c765999814b7fe1b2a7b69a64ce846

          SHA512

          8ad2c3dbd3b4390e4c49561f25ff2acdd4ab4468074e213f3efc81a598f71620e8f21fc87114623a6c0509997e47e1c4f5ffe703c7421ae313f7ba536df2772f

        • C:\Program Files (x86)\GoSave\hz1cQetSgC06Du.tlb

          Filesize

          3KB

          MD5

          e3ab22d8beac0180520ab5289a64419b

          SHA1

          1456ba2c78b293e5a80185fefdf05f5dbe424937

          SHA256

          0d3342857b67678dd76e6a24e137f0d75ba399bb48bf5095d7e4f7dfa0bbe416

          SHA512

          c04163026ffa1c6fab34b4fdbf23702148c7c2a31dd356d26f9541027db078b6433aff3a5f749a209a3acbcf3a853a9b5f77984540e21be1f823ce92bcbfc4bf

        • C:\Program Files (x86)\GoSave\hz1cQetSgC06Du.x64.dll

          Filesize

          872KB

          MD5

          337b97dbbcc7ad4d75fb5a90652e6de3

          SHA1

          50e50243af1819e62a7512d85e6dd67b8e1ed103

          SHA256

          b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

          SHA512

          dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

        • C:\Program Files (x86)\GoSave\hz1cQetSgC06Du.x64.dll

          Filesize

          872KB

          MD5

          337b97dbbcc7ad4d75fb5a90652e6de3

          SHA1

          50e50243af1819e62a7512d85e6dd67b8e1ed103

          SHA256

          b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

          SHA512

          dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

        • C:\Program Files (x86)\GoSave\hz1cQetSgC06Du.x64.dll

          Filesize

          872KB

          MD5

          337b97dbbcc7ad4d75fb5a90652e6de3

          SHA1

          50e50243af1819e62a7512d85e6dd67b8e1ed103

          SHA256

          b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

          SHA512

          dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

        • memory/4388-132-0x0000000000400000-0x00000000004C9000-memory.dmp

          Filesize

          804KB

        • memory/4416-138-0x0000000000000000-mapping.dmp

        • memory/4548-141-0x0000000000000000-mapping.dmp