Analysis

  • max time kernel
    120s
  • max time network
    38s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    30/10/2024, 14:50

General

  • Target

    4ee9ec984e9b67d700a144ce7fdfe785f2b8cc2907ff9ee3b4fc4e7fb7fe0f55N.exe

  • Size

    49KB

  • MD5

    5c4f36b6ad585b5b03f615740f858680

  • SHA1

    2ce69bf1b549af12dce410996250a4bdcf48faca

  • SHA256

    4ee9ec984e9b67d700a144ce7fdfe785f2b8cc2907ff9ee3b4fc4e7fb7fe0f55

  • SHA512

    16e88a0d7a6cb94280dc64150da603fa709d4e94f89fa0ba3cad4f1374fb1a7964fdd36a7c65a9860ff2180cd76e771521e93176b43644b77e082677f9775225

  • SSDEEP

    768:jIUk6esQOVK0RNBwwboEeQBRsxX7P2A5Ah66ggzEmDmHjQy:jSowgKSHsxX6A2WeDmL

Malware Config

Signatures

  • Windows security bypass 2 TTPs 4 IoCs
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 4 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • Drops file in Drivers directory 1 IoCs
  • Event Triggered Execution: Image File Execution Options Injection 1 TTPs 3 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Windows security modification 2 TTPs 4 IoCs
  • Indicator Removal: Clear Persistence 1 TTPs 1 IoCs

    remove IFEO.

  • Modifies WinLogon 2 TTPs 5 IoCs
  • Drops file in System32 directory 12 IoCs
  • Drops file in Program Files directory 3 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Windows\system32\winlogon.exe
    winlogon.exe
    1⤵
      PID:416
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:1212
        • C:\Users\Admin\AppData\Local\Temp\4ee9ec984e9b67d700a144ce7fdfe785f2b8cc2907ff9ee3b4fc4e7fb7fe0f55N.exe
          "C:\Users\Admin\AppData\Local\Temp\4ee9ec984e9b67d700a144ce7fdfe785f2b8cc2907ff9ee3b4fc4e7fb7fe0f55N.exe"
          2⤵
          • Loads dropped DLL
          • Drops file in System32 directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1688
          • C:\Windows\SysWOW64\rmass.exe
            "C:\Windows\SysWOW64\rmass.exe"
            3⤵
            • Windows security bypass
            • Boot or Logon Autostart Execution: Active Setup
            • Drops file in Drivers directory
            • Event Triggered Execution: Image File Execution Options Injection
            • Executes dropped EXE
            • Loads dropped DLL
            • Windows security modification
            • Indicator Removal: Clear Persistence
            • Modifies WinLogon
            • Drops file in System32 directory
            • Drops file in Program Files directory
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1628
            • C:\Windows\SysWOW64\rmass.exe
              --k33p
              4⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              PID:1456

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Windows\SysWOW64\RECOVER32.DLL

              Filesize

              5KB

              MD5

              12ff80c93916ec18553163d151a58a22

              SHA1

              42b06ecc5e03b767770f3ed0a12953326d0eede3

              SHA256

              144c5d2d4d938ad383d96c96163254b5e757ddb049d30445776f4077580668de

              SHA512

              50c29b2d567c75aa9b1bb2d4966d630a9747cdc50fc0843492a242068d67dc1c4fe418accb3acf6ce17e4831358d9acdab070aa81f673be086c589db6e5b7f67

            • C:\Windows\SysWOW64\ahuy.exe

              Filesize

              49KB

              MD5

              5dc09e3632459e1d825e35d58db253cb

              SHA1

              8fbeaaca427eda147b482a0701ec34bf0a4b8c2d

              SHA256

              ded6dd310bee48db75ea489b05459a926ce03c9a508e47287aab1af727d996a9

              SHA512

              7060a8e58597eb7cdef3a552e207cbcfdb06c74d6f6a0201413e9e35411ab638d565069d466f3400bf898fa56bca14d6764ba90316b824948026c01f7c3165ed

            • C:\Windows\SysWOW64\ntdbg.exe

              Filesize

              50KB

              MD5

              d5f0966ef69fbedd151dbb844aa87258

              SHA1

              f0bc10a26f2700705928badecb0f62443be8a9c7

              SHA256

              97bb9a9af3b8bf815b1055bfc824360555f67a1656cb7f39808a220f371034c0

              SHA512

              7cf97bb922d44033cdd06ad1e5e40b061d76b409636bc6223e8ffc048d0f3673723241fc7313397e04f682b22ecc42193f76e26a366c33e59a4c6a55c774ffcc

            • \Windows\SysWOW64\rmass.exe

              Filesize

              46KB

              MD5

              560ad83daaedd76f2e111a3e0fcfcb05

              SHA1

              1cb9082ecf83c06ea04a40d8233f5b4e209f78b8

              SHA256

              f3984e23d9b498dfc7bed2ea9c6c07b1b7eee2e796307422368ee1586b60c130

              SHA512

              dae737f0fd6182b66f1d740710b96686e8208fb048e215e6bf990991aafa0faa154c24966e57f9f3d5136c58e51cf1956a4c2dcf3c3817361fde3d3f7e45ca35

            • memory/1456-51-0x0000000000400000-0x000000000040E000-memory.dmp

              Filesize

              56KB

            • memory/1628-50-0x0000000000400000-0x000000000040E000-memory.dmp

              Filesize

              56KB

            • memory/1688-8-0x0000000000400000-0x0000000000403000-memory.dmp

              Filesize

              12KB