Analysis

  • max time kernel
    57s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 22:48

General

  • Target

    868da88158951b51e5ad58d698bfdb75ec3b2898b4584232e31f5b47c298c110.exe

  • Size

    4.3MB

  • MD5

    293d119f5a6b9f39e59172fe7d8642fe

  • SHA1

    2460c77642696ba55d56295396e1deca4c7302a8

  • SHA256

    868da88158951b51e5ad58d698bfdb75ec3b2898b4584232e31f5b47c298c110

  • SHA512

    a48faca114569219e9d12af640c0a876a998a0a456ccc7db4fec14c532d993aaf1b686093f3c456e329560ce952b82db58869b5990afd4477f4e3a871160b1d3

  • SSDEEP

    49152:5COqIz5U23CZ+6rmxup4YdGKvghxfki1hPXGIjQ7yoC3yE/Ac5mWxnmOb:Q25U946+KcbP2iQuoWNAxen5

Malware Config

Signatures

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

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

  • Drops file in Program Files directory 8 IoCs
  • Modifies Internet Explorer settings 1 TTPs 8 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\868da88158951b51e5ad58d698bfdb75ec3b2898b4584232e31f5b47c298c110.exe
    "C:\Users\Admin\AppData\Local\Temp\868da88158951b51e5ad58d698bfdb75ec3b2898b4584232e31f5b47c298c110.exe"
    1⤵
    • Loads dropped DLL
    • Installs/modifies Browser Helper Object
    • Drops file in Program Files directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:1704
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "C:\Program Files (x86)\GoSave\FjfjTBbvX6JBcx.x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:936
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\GoSave\FjfjTBbvX6JBcx.x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:1864

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files (x86)\GoSave\FjfjTBbvX6JBcx.dat

    Filesize

    4KB

    MD5

    cb1681afe36e2a38b80a1e54ac1a2766

    SHA1

    8cf7e310e51737b9f7891a557b0b2b8dafd0addc

    SHA256

    1043f20481dbed98c8fbdce230e8cb20e0df8f11fc5d545bee18d80878c334e8

    SHA512

    b886f0c65d00614e37dd1ef8214ed7917acc192e3422d47e0720e501beed7f4e567276e5c2e161dd60ec40ae6b0ba93de9d8f82ea2d1651d72b47a7aafe5c296

  • C:\Program Files (x86)\GoSave\FjfjTBbvX6JBcx.tlb

    Filesize

    3KB

    MD5

    e3ab22d8beac0180520ab5289a64419b

    SHA1

    1456ba2c78b293e5a80185fefdf05f5dbe424937

    SHA256

    0d3342857b67678dd76e6a24e137f0d75ba399bb48bf5095d7e4f7dfa0bbe416

    SHA512

    c04163026ffa1c6fab34b4fdbf23702148c7c2a31dd356d26f9541027db078b6433aff3a5f749a209a3acbcf3a853a9b5f77984540e21be1f823ce92bcbfc4bf

  • C:\Program Files (x86)\GoSave\FjfjTBbvX6JBcx.x64.dll

    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\FjfjTBbvX6JBcx.dll

    Filesize

    738KB

    MD5

    49961c7c9a7aef57f49adf50d1c810f6

    SHA1

    fc2078aeff5d5abee27c9e8a500cb2d6ae755b05

    SHA256

    c80abdc502d18db54137edc2680a498402c765999814b7fe1b2a7b69a64ce846

    SHA512

    8ad2c3dbd3b4390e4c49561f25ff2acdd4ab4468074e213f3efc81a598f71620e8f21fc87114623a6c0509997e47e1c4f5ffe703c7421ae313f7ba536df2772f

  • \Program Files (x86)\GoSave\FjfjTBbvX6JBcx.x64.dll

    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\FjfjTBbvX6JBcx.x64.dll

    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • memory/936-61-0x0000000000000000-mapping.dmp

  • memory/1704-54-0x0000000075591000-0x0000000075593000-memory.dmp

    Filesize

    8KB

  • memory/1704-55-0x0000000002A60000-0x0000000002B29000-memory.dmp

    Filesize

    804KB

  • memory/1864-65-0x0000000000000000-mapping.dmp

  • memory/1864-66-0x000007FEFBF01000-0x000007FEFBF03000-memory.dmp

    Filesize

    8KB