Analysis

  • max time kernel
    36s
  • max time network
    42s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 19:24

General

  • Target

    c8108123390ea985083d03ccae82402170d644f014a7d623bd12a3e24869839c.exe

  • Size

    4.4MB

  • MD5

    993d17d78e9ad9e9190aedf31da857c8

  • SHA1

    1f88692236b0ad8257b442857338c1a7a7d563a8

  • SHA256

    c8108123390ea985083d03ccae82402170d644f014a7d623bd12a3e24869839c

  • SHA512

    abd0776ad71af66cf9d95a764a3ca7ad861e5cdc3c760d420702d3fa8515eb0b2e2fd4a9d79219ff560b1fc03d25d15f5d9be740b093b45f747185c049f217f4

  • SSDEEP

    49152:DhuK4jmWrCBDT+qLmxup4mdGKvghxfki1gOCrZguQ1jSlM/Zf0weeDNxiC:b2mWrKyqwKclWZgPj8MNtLNxi

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\c8108123390ea985083d03ccae82402170d644f014a7d623bd12a3e24869839c.exe
    "C:\Users\Admin\AppData\Local\Temp\c8108123390ea985083d03ccae82402170d644f014a7d623bd12a3e24869839c.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:784
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "C:\Program Files (x86)\GoSave\kXrcDTWehzeTv7.x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1992
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\GoSave\kXrcDTWehzeTv7.x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:1272

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files (x86)\GoSave\kXrcDTWehzeTv7.dat

    Filesize

    4KB

    MD5

    3b6d73a0e029cbb39ec1323c3e9c4b15

    SHA1

    d645a0549cc105d7be417f20a0d79ddfe0c91a2f

    SHA256

    5d344e9b5b77c95197a4f1a3b906650410c383ba7afc2715df0718fb961a09ca

    SHA512

    a55f57e39bac284aca8afdfac61879455c28f0ea528b1d191b3cab2ad58f7eb2e53db4b7dd9c195e6080ae65f716fe81ebb9b4b8a158f73d8ee47306d1f2adf9

  • C:\Program Files (x86)\GoSave\kXrcDTWehzeTv7.tlb

    Filesize

    3KB

    MD5

    e3ab22d8beac0180520ab5289a64419b

    SHA1

    1456ba2c78b293e5a80185fefdf05f5dbe424937

    SHA256

    0d3342857b67678dd76e6a24e137f0d75ba399bb48bf5095d7e4f7dfa0bbe416

    SHA512

    c04163026ffa1c6fab34b4fdbf23702148c7c2a31dd356d26f9541027db078b6433aff3a5f749a209a3acbcf3a853a9b5f77984540e21be1f823ce92bcbfc4bf

  • C:\Program Files (x86)\GoSave\kXrcDTWehzeTv7.x64.dll

    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\kXrcDTWehzeTv7.dll

    Filesize

    738KB

    MD5

    49961c7c9a7aef57f49adf50d1c810f6

    SHA1

    fc2078aeff5d5abee27c9e8a500cb2d6ae755b05

    SHA256

    c80abdc502d18db54137edc2680a498402c765999814b7fe1b2a7b69a64ce846

    SHA512

    8ad2c3dbd3b4390e4c49561f25ff2acdd4ab4468074e213f3efc81a598f71620e8f21fc87114623a6c0509997e47e1c4f5ffe703c7421ae313f7ba536df2772f

  • \Program Files (x86)\GoSave\kXrcDTWehzeTv7.x64.dll

    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\kXrcDTWehzeTv7.x64.dll

    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • memory/784-54-0x0000000075FC1000-0x0000000075FC3000-memory.dmp

    Filesize

    8KB

  • memory/784-55-0x0000000002A20000-0x0000000002AE9000-memory.dmp

    Filesize

    804KB

  • memory/1272-65-0x0000000000000000-mapping.dmp

  • memory/1272-66-0x000007FEFB871000-0x000007FEFB873000-memory.dmp

    Filesize

    8KB

  • memory/1992-61-0x0000000000000000-mapping.dmp