Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-11-2024 01:27

General

  • Target

    e84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845.exe

  • Size

    410KB

  • MD5

    42ded6fecf6e261cae9b73ce58011db7

  • SHA1

    579b5303fb2c127f8169936aa2e11dc5323c9afa

  • SHA256

    e84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845

  • SHA512

    25d9eea0d589bf2d0f95723f791635ad8a4935048e53b7ec3416a10549120b2c8c874ff41c3861f4f987716bc0f75c5ac27a807c30f3e16d07a0d26578097d8a

  • SSDEEP

    6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4:gtRfJcNYFNm8UhlZGse

Malware Config

Signatures

  • Blocklisted process makes network request 8 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845.exe
    "C:\Users\Admin\AppData\Local\Temp\e84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4972
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ivzft.exe "C:\Users\Admin\AppData\Local\Temp\e84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:4744
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:3892
      • C:\Users\Admin\AppData\Local\Temp\ivzft.exe
        C:\Users\Admin\AppData\Local\Temp\\ivzft.exe "C:\Users\Admin\AppData\Local\Temp\e84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:244
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\Program Files\ikurvyr\wjnnz.dll",Verify C:\Users\Admin\AppData\Local\Temp\ivzft.exe
          4⤵
          • Blocklisted process makes network request
          • Loads dropped DLL
          • Adds Run key to start application
          • Enumerates connected drives
          • Writes to the Master Boot Record (MBR)
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • System Location Discovery: System Language Discovery
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3992

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\ivzft.exe

    Filesize

    410KB

    MD5

    d08eee4a8460d9c92780c4360921f35f

    SHA1

    a6e3cd8442d030cba03daeea21f4e2ab7aa16a46

    SHA256

    f206fda692c2e15751d8e61e4fe55e938ff9c775215094979c96e19ff07c626e

    SHA512

    f1883171c6d98cff4e27ffbf71776a48708122abafe6ca5c6883b2b65e035dd705a907288be69eba39ccd7e02d5a22af06689d0e338e4548f82dd7f1242b8a5a

  • \??\c:\Program Files\ikurvyr\wjnnz.dll

    Filesize

    228KB

    MD5

    fa5b53d0f6597efc233f23b06d9be508

    SHA1

    091979ab3072839272c36d3f240123ecda6325e7

    SHA256

    4325197d1bf397aefcd445719aad8b6b0a56f7e6375bfa60605660027959a07e

    SHA512

    509f1f74adf5cb3a59953109901008f9d108ace00ac1280d4e5d9b46ae3877f6c5ce0e14c3fc7909632eeaa6a4b6faa178f66c51d6a33fd2e847fff9d76a7058

  • memory/244-7-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/3992-10-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/3992-11-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/3992-13-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/4972-0-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/4972-2-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB