Analysis

  • max time kernel
    142s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    10-11-2024 01:07

General

  • Target

    a016036446bb528c7b2cb64bc7bd1ab9bb7a55e95da544177724f1ce451a678f.exe

  • Size

    115KB

  • MD5

    d4b4525c79418ea457b15763458fc0ff

  • SHA1

    8f44a5abf652b586282faf2986453713525b1d3b

  • SHA256

    a016036446bb528c7b2cb64bc7bd1ab9bb7a55e95da544177724f1ce451a678f

  • SHA512

    e5ec8183b0b47483891c6463bb5ddd766eab813cc06ff555f3212175150deb50867aa6587447b756deb59424d966ab0ee9b1035b5f4305dfa7511fb0d85ca0f7

  • SSDEEP

    1536:TRiAXaKD5grAhdVA2VukXKzMf3liaL+SWzR+fy1ZZosMiZ7RtEs:liAXaKDLVaroj6SWzosZGyRtEs

Malware Config

Signatures

  • Blocklisted process makes network request 10 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 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.

  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a016036446bb528c7b2cb64bc7bd1ab9bb7a55e95da544177724f1ce451a678f.exe
    "C:\Users\Admin\AppData\Local\Temp\a016036446bb528c7b2cb64bc7bd1ab9bb7a55e95da544177724f1ce451a678f.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3012
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&c:\ntksxkn.exe "C:\Users\Admin\AppData\Local\Temp\a016036446bb528c7b2cb64bc7bd1ab9bb7a55e95da544177724f1ce451a678f.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:2056
      • 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:2820
      • \??\c:\ntksxkn.exe
        c:\ntksxkn.exe "C:\Users\Admin\AppData\Local\Temp\a016036446bb528c7b2cb64bc7bd1ab9bb7a55e95da544177724f1ce451a678f.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2960
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\hrooi\mkihh.dll",GetWindowClass c:\ntksxkn.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)
          • System Location Discovery: System Language Discovery
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2996

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \??\c:\hrooi\mkihh.dll

    Filesize

    63KB

    MD5

    06c39ca503305efbf7274f6bf9394f28

    SHA1

    bec4daadab49f1f58a951d9cc1b2d7c1e2ae8450

    SHA256

    19f33ba32f20dae1ea6a6b87824dc8e3e74527b34f9cd01a6e4f67e3e79dd867

    SHA512

    e6c8b19892b5ce5108909824ad37b0fe0eed2459939f0249133bf3e3c1470308d6d51aa3fbf42aabcbf37bb2412c8a27bff445e23dc0495910ec5f445055d931

  • \??\c:\ntksxkn.exe

    Filesize

    116KB

    MD5

    6ba3d2b0e8f147dc0fe7fb7c2e70bf94

    SHA1

    a61c21792bba3007b9f1e48b7aea05bd5547e247

    SHA256

    3a80d206a13232bdb28ed355a99585b0b6734a82a912c10d64ab229d62e73e91

    SHA512

    3b531cf8d5a79a099af4fd85a1689df8ac3ee93b5e990744730c5c6b103233222050c03c73ab8d65134272412292caac0d6590bb386130f2c0d54a95eb3a5480

  • memory/2056-5-0x0000000000370000-0x000000000038D000-memory.dmp

    Filesize

    116KB

  • memory/2960-7-0x0000000000400000-0x000000000041D000-memory.dmp

    Filesize

    116KB

  • memory/2996-15-0x0000000010033000-0x0000000010034000-memory.dmp

    Filesize

    4KB

  • memory/2996-14-0x0000000010000000-0x0000000010036000-memory.dmp

    Filesize

    216KB

  • memory/2996-13-0x0000000010000000-0x0000000010036000-memory.dmp

    Filesize

    216KB

  • memory/2996-16-0x0000000010000000-0x0000000010036000-memory.dmp

    Filesize

    216KB

  • memory/2996-17-0x0000000010033000-0x0000000010034000-memory.dmp

    Filesize

    4KB

  • memory/2996-18-0x0000000010000000-0x0000000010036000-memory.dmp

    Filesize

    216KB

  • memory/2996-22-0x0000000010000000-0x0000000010036000-memory.dmp

    Filesize

    216KB

  • memory/2996-23-0x0000000010000000-0x0000000010036000-memory.dmp

    Filesize

    216KB

  • memory/2996-24-0x0000000010000000-0x0000000010036000-memory.dmp

    Filesize

    216KB

  • memory/2996-26-0x0000000010000000-0x0000000010036000-memory.dmp

    Filesize

    216KB

  • memory/3012-2-0x0000000000400000-0x000000000041D000-memory.dmp

    Filesize

    116KB

  • memory/3012-0-0x0000000000400000-0x000000000041D000-memory.dmp

    Filesize

    116KB