Analysis

  • max time kernel
    42s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 04:27

General

  • Target

    191720a048e0633840dcdcc464229f2e0a869186da6e16e486f700c51f0b07f2.exe

  • Size

    4.3MB

  • MD5

    2cc584f073ca5b499e25f2cd49547096

  • SHA1

    4579594c1569f371a1cd14b37cc29e92b397d63f

  • SHA256

    191720a048e0633840dcdcc464229f2e0a869186da6e16e486f700c51f0b07f2

  • SHA512

    e94ce2ce2b038a6e06a2575dc92b031bdbf66f6d541397e6c000d87fe8419ada39d22328e41dd8d2b44c9a281e4c27fb9332fdeb12bc32c7e5ad8f6f69ef46ab

  • SSDEEP

    49152:fhOqIruzyb7SO6rmxup4ZdGKvghxfki1iPXGIjQbZ8hpTQdu/:nuuzAT6/KcEP2iQbZspsdu

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\191720a048e0633840dcdcc464229f2e0a869186da6e16e486f700c51f0b07f2.exe
    "C:\Users\Admin\AppData\Local\Temp\191720a048e0633840dcdcc464229f2e0a869186da6e16e486f700c51f0b07f2.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:364
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "C:\Program Files (x86)\GoSave\S8Jy181ai4NYS1.x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2044
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\GoSave\S8Jy181ai4NYS1.x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:1928

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Browser Extensions

1
T1176

Defense Evasion

Modify Registry

3
T1112

Discovery

Query Registry

1
T1012

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\GoSave\S8Jy181ai4NYS1.dat
    Filesize

    4KB

    MD5

    f73f78cb7720d0eefed6fc1130c2808f

    SHA1

    11ddaea59fb8b0349507d6537ec20f045fca12c3

    SHA256

    a508e6a8178d1e350930b5d68f24cfbf01224e41e93e403a9dfb5be8665dcee3

    SHA512

    f5f4cc42da5877b2a75d423d5a5d56bd42113999ae8dd84a60aacdc41bf951902b30bfd40687c13a19a2db01d5792edbd18a37c0d8ebe667a0525ce6feecf87f

  • C:\Program Files (x86)\GoSave\S8Jy181ai4NYS1.tlb
    Filesize

    3KB

    MD5

    e3ab22d8beac0180520ab5289a64419b

    SHA1

    1456ba2c78b293e5a80185fefdf05f5dbe424937

    SHA256

    0d3342857b67678dd76e6a24e137f0d75ba399bb48bf5095d7e4f7dfa0bbe416

    SHA512

    c04163026ffa1c6fab34b4fdbf23702148c7c2a31dd356d26f9541027db078b6433aff3a5f749a209a3acbcf3a853a9b5f77984540e21be1f823ce92bcbfc4bf

  • C:\Program Files (x86)\GoSave\S8Jy181ai4NYS1.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\S8Jy181ai4NYS1.dll
    Filesize

    738KB

    MD5

    49961c7c9a7aef57f49adf50d1c810f6

    SHA1

    fc2078aeff5d5abee27c9e8a500cb2d6ae755b05

    SHA256

    c80abdc502d18db54137edc2680a498402c765999814b7fe1b2a7b69a64ce846

    SHA512

    8ad2c3dbd3b4390e4c49561f25ff2acdd4ab4468074e213f3efc81a598f71620e8f21fc87114623a6c0509997e47e1c4f5ffe703c7421ae313f7ba536df2772f

  • \Program Files (x86)\GoSave\S8Jy181ai4NYS1.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\S8Jy181ai4NYS1.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • memory/364-54-0x0000000075131000-0x0000000075133000-memory.dmp
    Filesize

    8KB

  • memory/364-55-0x0000000002AE0000-0x0000000002BA9000-memory.dmp
    Filesize

    804KB

  • memory/1928-65-0x0000000000000000-mapping.dmp
  • memory/1928-66-0x000007FEFB6B1000-0x000007FEFB6B3000-memory.dmp
    Filesize

    8KB

  • memory/2044-61-0x0000000000000000-mapping.dmp