Analysis

  • max time kernel
    43s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 03:26

General

  • Target

    2b9e006f230663d12d092385622ea07a374a679cc2dd804c607098e8c5802305.exe

  • Size

    4.3MB

  • MD5

    71f9a2bb86220455238173645948076f

  • SHA1

    90ef4dba900a62b815367b92c2afc477d7b1735d

  • SHA256

    2b9e006f230663d12d092385622ea07a374a679cc2dd804c607098e8c5802305

  • SHA512

    bb2043fa1e13a0e96a98b61210e86f2c0f42825b7f79bf97dde8edcf4c143b145d7734f24e7924eb4bdef309dc0e9c5326706a68e796a14718b43c2af2d62b67

  • SSDEEP

    49152:8COqIz5U23CZ+6rmxup4xdGKvghxfki1v9buOBqFkjSlM/Zf0weeDNxeb:H25U946nKczbuOBqFkj8MNtLNxe

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\2b9e006f230663d12d092385622ea07a374a679cc2dd804c607098e8c5802305.exe
    "C:\Users\Admin\AppData\Local\Temp\2b9e006f230663d12d092385622ea07a374a679cc2dd804c607098e8c5802305.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:832
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "C:\Program Files (x86)\GoSave\6v3RP7ozNjVRrE.x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:892
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\GoSave\6v3RP7ozNjVRrE.x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:996

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files (x86)\GoSave\6v3RP7ozNjVRrE.dat
    Filesize

    4KB

    MD5

    e7a5c87442fa58a17021a5b508053988

    SHA1

    bf05de0ff3fd64a99794c2780f699703faee1b99

    SHA256

    db26d39f7be9cd86f8d1b543ebf5bef009057d6ba79b3169e457bea9e701c561

    SHA512

    1b4a585488c3856840314101d37b94d728523762c21f589fc5b47909b12fc0eec3ca230509ebfebf7964037bc4813e3d6775fa687c0c8513a2218d28601ef408

  • C:\Program Files (x86)\GoSave\6v3RP7ozNjVRrE.tlb
    Filesize

    3KB

    MD5

    e3ab22d8beac0180520ab5289a64419b

    SHA1

    1456ba2c78b293e5a80185fefdf05f5dbe424937

    SHA256

    0d3342857b67678dd76e6a24e137f0d75ba399bb48bf5095d7e4f7dfa0bbe416

    SHA512

    c04163026ffa1c6fab34b4fdbf23702148c7c2a31dd356d26f9541027db078b6433aff3a5f749a209a3acbcf3a853a9b5f77984540e21be1f823ce92bcbfc4bf

  • C:\Program Files (x86)\GoSave\6v3RP7ozNjVRrE.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\6v3RP7ozNjVRrE.dll
    Filesize

    738KB

    MD5

    49961c7c9a7aef57f49adf50d1c810f6

    SHA1

    fc2078aeff5d5abee27c9e8a500cb2d6ae755b05

    SHA256

    c80abdc502d18db54137edc2680a498402c765999814b7fe1b2a7b69a64ce846

    SHA512

    8ad2c3dbd3b4390e4c49561f25ff2acdd4ab4468074e213f3efc81a598f71620e8f21fc87114623a6c0509997e47e1c4f5ffe703c7421ae313f7ba536df2772f

  • \Program Files (x86)\GoSave\6v3RP7ozNjVRrE.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\6v3RP7ozNjVRrE.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • memory/832-54-0x0000000075921000-0x0000000075923000-memory.dmp
    Filesize

    8KB

  • memory/832-55-0x0000000002A40000-0x0000000002B09000-memory.dmp
    Filesize

    804KB

  • memory/892-61-0x0000000000000000-mapping.dmp
  • memory/996-65-0x0000000000000000-mapping.dmp
  • memory/996-66-0x000007FEFC371000-0x000007FEFC373000-memory.dmp
    Filesize

    8KB