Analysis

  • max time kernel
    146s
  • max time network
    162s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/03/2024, 16:53

General

  • Target

    c921a19a803a3eb62ff67ecd9f5d238b.exe

  • Size

    24KB

  • MD5

    c921a19a803a3eb62ff67ecd9f5d238b

  • SHA1

    8e48e538abf42a23ccb23714cf59593c41bbaaae

  • SHA256

    d816fbf9bf26b466bc69a0cb1624c82bae397fe6f8ce6f388a330f70fe2d8150

  • SHA512

    ce4b39da393c141e8fe890fd9c40f36c232684ee7000f106178e784ec04c382998e7fed76278a43f35d3fcb4fa679487b90ff4986cac188305c1bf7b40d6344f

  • SSDEEP

    384:E3eVES+/xwGkRKJilM61qmTTMVF9/q5N0:bGS+ZfbJiO8qYoAi

Score
6/10

Malware Config

Signatures

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Enumerates processes with tasklist 1 TTPs 1 IoCs
  • Gathers network information 2 TTPs 2 IoCs

    Uses commandline utility to view network configuration.

  • Runs net.exe
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c921a19a803a3eb62ff67ecd9f5d238b.exe
    "C:\Users\Admin\AppData\Local\Temp\c921a19a803a3eb62ff67ecd9f5d238b.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Program Files directory
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4644
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ver >c:\windows\temp\flash.log & cmd /c set >>c:\windows\temp\flash.log & ipconfig /all >>c:\windows\temp\flash.log & tasklist >>c:\windows\temp\flash.log & net start>>c:\windows\temp\flash.log & netstat -an >>c:\windows\temp\flash.log
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1280
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c set
        3⤵
          PID:4364
        • C:\Windows\SysWOW64\ipconfig.exe
          ipconfig /all
          3⤵
          • Gathers network information
          PID:908
        • C:\Windows\SysWOW64\tasklist.exe
          tasklist
          3⤵
          • Enumerates processes with tasklist
          • Suspicious use of AdjustPrivilegeToken
          PID:960
        • C:\Windows\SysWOW64\net.exe
          net start
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1116
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start
            4⤵
              PID:4668
          • C:\Windows\SysWOW64\NETSTAT.EXE
            netstat -an
            3⤵
            • Gathers network information
            • Suspicious use of AdjustPrivilegeToken
            PID:840

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • \??\c:\windows\temp\flash.log

        Filesize

        14KB

        MD5

        b1a67ef03eb778768408a7b825338b1f

        SHA1

        7d1ae8f0d76106cf6db74627edc930bee2502dea

        SHA256

        05e8e04205d685287dd8e6141ba6c2c2f88fbc00c1533ae7f76fd1e573b52d46

        SHA512

        9e38869ff4f8f9fdd6b64d84e1a1f929fa26bddcfe611e8d8800d87c1382cf46cf5298cbd374e3d5f6bb4f7a57b9e8fd48ef1e7d019c30ca81e86737f5c9e9a1