Analysis

  • max time kernel
    115s
  • max time network
    120s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/08/2024, 15:26

General

  • Target
    ef136d4fea4454662428a0867eb01120N.exe
  • Size 96KB
  • Sample240817-svdsbasfjf
  • SHA256 540065f21daa8861400dfcc1708907f265395d332165d8ceca39baea42600418
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • neconyd

C2
  • http://ow5dirasuek.com/

  • http://mkkuei4kdsz.com/

  • http://lousta.net/

Signatures

  • Neconyd

    Neconyd is a trojan written in C++.

  • Executes dropped EXE 6 IoCs
  • Drops file in System32 directory 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Program crash 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ef136d4fea4454662428a0867eb01120N.exe
    "C:\Users\Admin\AppData\Local\Temp\ef136d4fea4454662428a0867eb01120N.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4480
    • C:\Users\Admin\AppData\Local\Temp\ef136d4fea4454662428a0867eb01120N.exe
      C:\Users\Admin\AppData\Local\Temp\ef136d4fea4454662428a0867eb01120N.exe
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3044
      • C:\Users\Admin\AppData\Roaming\omsecor.exe
        C:\Users\Admin\AppData\Roaming\omsecor.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1280
        • C:\Users\Admin\AppData\Roaming\omsecor.exe
          C:\Users\Admin\AppData\Roaming\omsecor.exe
          4⤵
          • Executes dropped EXE
          • Drops file in System32 directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:5012
          • C:\Windows\SysWOW64\omsecor.exe
            C:\Windows\System32\omsecor.exe
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:1964
            • C:\Windows\SysWOW64\omsecor.exe
              C:\Windows\SysWOW64\omsecor.exe
              6⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:3156
              • C:\Users\Admin\AppData\Roaming\omsecor.exe
                C:\Users\Admin\AppData\Roaming\omsecor.exe
                7⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • System Location Discovery: System Language Discovery
                • Suspicious use of WriteProcessMemory
                PID:3932
                • C:\Users\Admin\AppData\Roaming\omsecor.exe
                  C:\Users\Admin\AppData\Roaming\omsecor.exe
                  8⤵
                  • Executes dropped EXE
                  • System Location Discovery: System Language Discovery
                  PID:2516
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 3932 -s 268
                  8⤵
                  • Program crash
                  PID:732
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 1964 -s 292
              6⤵
              • Program crash
              PID:4836
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1280 -s 304
          4⤵
          • Program crash
          PID:4116
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4480 -s 288
      2⤵
      • Program crash
      PID:1668
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4480 -ip 4480
    1⤵
      PID:996
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 1280 -ip 1280
      1⤵
        PID:1684
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4380,i,11251706013556949551,5157034131170452377,262144 --variations-seed-version --mojo-platform-channel-handle=4188 /prefetch:8
        1⤵
          PID:2256
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 1964 -ip 1964
          1⤵
            PID:1132
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3932 -ip 3932
            1⤵
              PID:4924

            Network

                  MITRE ATT&CK Enterprise v15

                  Replay Monitor

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                  Downloads

                  omsecor.exe

                  • Path C:\Users\Admin\AppData\Roaming\omsecor.exe
                  • Size 96KB
                  • SHA256 8154122245337d69acc7de17152037a18e44b74ad72dedb2e4fed1f812a5aa41
                  • MD5 SHA1 SHA512 SSDEEP

                  omsecor.exe

                  • Path C:\Users\Admin\AppData\Roaming\omsecor.exe
                  • Size 96KB
                  • SHA256 21f2a06fb820e15a85d36c3f447e2b8ce59a5580b3aae7fb9ce1da75d2f91e0d
                  • MD5 SHA1 SHA512 SSDEEP

                  omsecor.exe

                  • Path C:\Windows\SysWOW64\omsecor.exe
                  • Size 96KB
                  • SHA256 bc72f43cd276868a76e351cb69aec0b4d51543e560ace2a5bd2ec51edd52cf2b
                  • MD5 SHA1 SHA512 SSDEEP

                  memory/1280-19-0x0000000000400000-0x0000000000423000-memory.dmp

                  memory/1280-11-0x0000000000400000-0x0000000000423000-memory.dmp

                  memory/1964-33-0x0000000000400000-0x0000000000423000-memory.dmp

                  memory/1964-52-0x0000000000400000-0x0000000000423000-memory.dmp

                  memory/2516-54-0x0000000000400000-0x0000000000429000-memory.dmp

                  memory/2516-49-0x0000000000400000-0x0000000000429000-memory.dmp

                  memory/2516-50-0x0000000000400000-0x0000000000429000-memory.dmp

                  memory/3044-1-0x0000000000400000-0x0000000000429000-memory.dmp

                  memory/3044-2-0x0000000000400000-0x0000000000429000-memory.dmp

                  memory/3044-3-0x0000000000400000-0x0000000000429000-memory.dmp

                  memory/3044-5-0x0000000000400000-0x0000000000429000-memory.dmp

                  memory/3156-40-0x0000000000400000-0x0000000000429000-memory.dmp

                  memory/3156-38-0x0000000000400000-0x0000000000429000-memory.dmp

                  memory/3156-37-0x0000000000400000-0x0000000000429000-memory.dmp

                  memory/3932-45-0x0000000000400000-0x0000000000423000-memory.dmp

                  memory/3932-53-0x0000000000400000-0x0000000000423000-memory.dmp

                  memory/4480-17-0x0000000000400000-0x0000000000423000-memory.dmp

                  memory/4480-0-0x0000000000400000-0x0000000000423000-memory.dmp

                  memory/5012-15-0x0000000000400000-0x0000000000429000-memory.dmp

                  memory/5012-31-0x0000000000400000-0x0000000000429000-memory.dmp

                  memory/5012-27-0x0000000000400000-0x0000000000429000-memory.dmp

                  memory/5012-26-0x0000000000400000-0x0000000000429000-memory.dmp

                  memory/5012-23-0x0000000000400000-0x0000000000429000-memory.dmp

                  memory/5012-20-0x0000000000400000-0x0000000000429000-memory.dmp

                  memory/5012-14-0x0000000000400000-0x0000000000429000-memory.dmp