Analysis

  • max time kernel
    149s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    10-11-2024 01:30

General

  • Target

    54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8.exe

  • Size

    410KB

  • MD5

    e62821ca3e227ea0dcf49df005e0b991

  • SHA1

    5051c0a586fadc90ae517d392fef451fd18d6f44

  • SHA256

    54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8

  • SHA512

    03e9dcdaddf891ad81572a94c2c49688754695c59892a99fd4e0c783088e5fcd836cce229645e54a56dbbbff83bd87b28f3bc7422db24ff916dac4643e620eb4

  • SSDEEP

    6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4:gtRfJcNYFNm8UhlZGse

Malware Config

Signatures

  • Blocklisted process makes network request 10 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 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 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8.exe
    "C:\Users\Admin\AppData\Local\Temp\54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2288
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\yjqyxl.exe "C:\Users\Admin\AppData\Local\Temp\54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:2848
      • 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:1636
      • C:\Users\Admin\AppData\Local\Temp\yjqyxl.exe
        C:\Users\Admin\AppData\Local\Temp\\yjqyxl.exe "C:\Users\Admin\AppData\Local\Temp\54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8.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:836
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\Program Files\hxpbs\zrpcx.dll",Verify C:\Users\Admin\AppData\Local\Temp\yjqyxl.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:2076

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \??\c:\Program Files\hxpbs\zrpcx.dll

    Filesize

    228KB

    MD5

    405e56ca9e961d17de9f38e00a6662f5

    SHA1

    45c8a78f34708a54ed985b5f4d3efa39f7a1a531

    SHA256

    936fc593b0e0b7103d7a88c5a07f2c1788746a30fad11b90ad50f88b06c58997

    SHA512

    1aea9da8bab8eff05f9513e9fd6b6b108585cb79d86a48f00517b9a986752254ff911630a43894e3c609e95059b69b0878efa79e1d6653849c7008df702e259f

  • \Users\Admin\AppData\Local\Temp\yjqyxl.exe

    Filesize

    410KB

    MD5

    ca17d04a2d757e93e467a201b1f41512

    SHA1

    16afb6de935de33f1d2f4d09d1d1bf9c707aa47e

    SHA256

    31c6cb71fae7303aaa69d0cd4adee29dfbc8c1c2f76f0d22804521c5cc1d58b2

    SHA512

    885a0e2e8f331ced3513a707cc9a2f19abfbad925e41220b59348cb82a54ff35032871aee73c355d5742ad24bbb476aa7b77a43edad64a7b97a2acebcbbf6fca

  • memory/836-9-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/2076-12-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/2076-17-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/2076-16-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/2076-18-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/2076-20-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/2288-0-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/2288-2-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/2848-4-0x0000000000160000-0x00000000001C4000-memory.dmp

    Filesize

    400KB