Analysis

  • max time kernel
    145s
  • max time network
    147s
  • 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 00:46

General

  • Target

    9775e0b681fcab10caa2a5f2bc9e29a42089631aa280a3584edb25f0697153da.exe

  • Size

    80KB

  • MD5

    13febf7a5e39b4716d743ca0131af98f

  • SHA1

    3398a7640d466fb0fcf5973c53047af0a1fbab22

  • SHA256

    9775e0b681fcab10caa2a5f2bc9e29a42089631aa280a3584edb25f0697153da

  • SHA512

    df06af8c2dae2eaf10b62f5ac080ac636177e1a728502ad26e6db89769a9716217f8a1a9577c6461828f18d3f5b02b2c27f8729f74947bf9c7f04c82bde2f703

  • SSDEEP

    768:qGHV45EDE477AZbUJx0rZGE3jCELoiMMj6hZ3nE+EXVmkDbjRL8Khc15Z6J1S:qG14P477AxUYrZGoC09k0SkTRHhWqP

Malware Config

Signatures

  • Blocklisted process makes network request 3 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.

  • 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 4 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\9775e0b681fcab10caa2a5f2bc9e29a42089631aa280a3584edb25f0697153da.exe
    "C:\Users\Admin\AppData\Local\Temp\9775e0b681fcab10caa2a5f2bc9e29a42089631aa280a3584edb25f0697153da.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2928
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&c:\pnrxlofur.exe "C:\Users\Admin\AppData\Local\Temp\9775e0b681fcab10caa2a5f2bc9e29a42089631aa280a3584edb25f0697153da.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:4068
      • 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:4268
      • \??\c:\pnrxlofur.exe
        c:\pnrxlofur.exe "C:\Users\Admin\AppData\Local\Temp\9775e0b681fcab10caa2a5f2bc9e29a42089631aa280a3584edb25f0697153da.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:400
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\pwhclic\nsoaz.dll",init c:\pnrxlofur.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:3968

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\pnrxlofur.exe

    Filesize

    80KB

    MD5

    e926b08ff37a69ef93b18974596f07a8

    SHA1

    4d6eec391ea269fa4f5ba663f899e8ce1237091f

    SHA256

    85ad9fe165c030001edc50de1fb4e12cc837206f049f0bb1f94da965ca0e0893

    SHA512

    4f886a7b3d0426e4c72eccf5f28bbd96a9c7a366686cbb57872ec47dd057c313daaa2e01d0aedcf430d9e60c900fb7af1e7f5b42a93a8a9ac60e475adec512e7

  • \??\c:\pwhclic\nsoaz.dll

    Filesize

    42KB

    MD5

    36e3fb5964d663272cf1169e1e1ca478

    SHA1

    58115e08b49505bcbbb5c88a28a86222ba18d5d4

    SHA256

    c7c41689de030df0f78f471422fa2a6383b36e77c94e7f6f124a96feb3e27ed7

    SHA512

    daff53b11aa400437a06287707a334a09661c1ef7d0fd8beaf1a874c79c16fe45bd1188343d0623e839d3ead5ea2dd90896e37ccf3b252c7220c74989a9ba442

  • memory/400-7-0x0000000000630000-0x0000000000631000-memory.dmp

    Filesize

    4KB

  • memory/400-9-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

  • memory/2928-0-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

  • memory/2928-1-0x0000000000930000-0x0000000000931000-memory.dmp

    Filesize

    4KB

  • memory/2928-3-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

  • memory/3968-12-0x0000000010000000-0x000000001002E000-memory.dmp

    Filesize

    184KB

  • memory/3968-13-0x0000000010000000-0x000000001002E000-memory.dmp

    Filesize

    184KB

  • memory/3968-14-0x0000000010000000-0x000000001002E000-memory.dmp

    Filesize

    184KB

  • memory/3968-15-0x00000000010C0000-0x00000000010C1000-memory.dmp

    Filesize

    4KB