Analysis

  • max time kernel
    113s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    15/10/2024, 21:54

General

  • Target

    3811d9d2010a0379f2c9bb99ad45fd2608e8c2f0ce0f15c8142a13eda7848e43N.exe

  • Size

    98KB

  • MD5

    df46def194ea28b5509e2cc130635bc0

  • SHA1

    e4bc07ab6c3c28730a1be80b5ba3704eee399f60

  • SHA256

    3811d9d2010a0379f2c9bb99ad45fd2608e8c2f0ce0f15c8142a13eda7848e43

  • SHA512

    f67a6e142e684554f6bbe0b6e03d95998efaa8bce49ca048d4661abfbf5a60bf3fa68151e0d6e2f7ec6909e6ef1e5fe20cb7d6372aaada0b258378b5ec7243d3

  • SSDEEP

    3072:11PgEOng1d66jRVa+n4NmNNouukrD7HNS:TpOg1xFV54eNobG7H

Malware Config

Signatures

  • Blocklisted process makes network request 9 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 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.

  • UPX packed file 7 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • System Location Discovery: System Language Discovery 1 TTPs 6 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.

  • Kills process with taskkill 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3811d9d2010a0379f2c9bb99ad45fd2608e8c2f0ce0f15c8142a13eda7848e43N.exe
    "C:\Users\Admin\AppData\Local\Temp\3811d9d2010a0379f2c9bb99ad45fd2608e8c2f0ce0f15c8142a13eda7848e43N.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2328
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\cewks.exe "C:\Users\Admin\AppData\Local\Temp\3811d9d2010a0379f2c9bb99ad45fd2608e8c2f0ce0f15c8142a13eda7848e43N.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:2616
      • 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:2608
      • C:\Users\Admin\AppData\Local\Temp\cewks.exe
        C:\Users\Admin\AppData\Local\Temp\\cewks.exe "C:\Users\Admin\AppData\Local\Temp\3811d9d2010a0379f2c9bb99ad45fd2608e8c2f0ce0f15c8142a13eda7848e43N.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2204
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\erwrb\vbhtkml.btv",crc32 C:\Users\Admin\AppData\Local\Temp\cewks.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
          • Suspicious use of WriteProcessMemory
          PID:2948
          • \??\c:\windows\SysWOW64\taskkill.exe
            taskkill /f /im attrib.exe
            5⤵
            • System Location Discovery: System Language Discovery
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:2896

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • \??\c:\erwrb\vbhtkml.btv

          Filesize

          57KB

          MD5

          2f53f49e01f09d6e6064871eec1955cd

          SHA1

          a6e1a6e5c2080d0fb2f7a872e3902a8a4a1a9b5f

          SHA256

          964e4dd2532d540bb61d3c7ccc833f2358d8cd6b2eabc3a2d51183a18b59f82d

          SHA512

          2cb98030c3df7417c04f796f78f23f96d381871d9c7ae4a14116764e915b2e2f56b9b3a6fb76fedc50a17788de9538fc7954a7b73bf17e4be43e1fc1a06bc218

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

          Filesize

          98KB

          MD5

          83f115c11fee444b9e62c58a9f94b66a

          SHA1

          fcd89b1a255535a343c374814951ee7fa1cf9f59

          SHA256

          e14ac228da14bff6ed9acb02ac522c5f3e69aad9ceaf88f21db9872bce88c9ba

          SHA512

          96e88d5af8900f7281299c1cf2f7b8422c5ad93ad76c56f61c2a2c15cdd17edb1973dd45cae7a691ba145df37c04145d0b2dce85937e5529230facc08abff9fb

        • memory/2204-11-0x0000000000400000-0x0000000000428000-memory.dmp

          Filesize

          160KB

        • memory/2328-1-0x0000000000380000-0x0000000000381000-memory.dmp

          Filesize

          4KB

        • memory/2328-3-0x0000000000400000-0x0000000000428000-memory.dmp

          Filesize

          160KB

        • memory/2328-0-0x0000000000400000-0x0000000000428000-memory.dmp

          Filesize

          160KB

        • memory/2616-5-0x00000000001A0000-0x00000000001C8000-memory.dmp

          Filesize

          160KB

        • memory/2616-8-0x00000000001A0000-0x00000000001C8000-memory.dmp

          Filesize

          160KB

        • memory/2948-14-0x0000000010000000-0x0000000010022000-memory.dmp

          Filesize

          136KB

        • memory/2948-15-0x0000000010000000-0x0000000010022000-memory.dmp

          Filesize

          136KB

        • memory/2948-19-0x0000000010000000-0x0000000010022000-memory.dmp

          Filesize

          136KB

        • memory/2948-20-0x0000000010000000-0x0000000010022000-memory.dmp

          Filesize

          136KB

        • memory/2948-21-0x0000000010000000-0x0000000010022000-memory.dmp

          Filesize

          136KB

        • memory/2948-26-0x0000000010000000-0x0000000010022000-memory.dmp

          Filesize

          136KB