Analysis

  • max time kernel
    114s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/03/2024, 21:10

General

  • Target

    503dedc4758ed147987b60cd85cb733d8066834d8f67c32945352d46c5d772e7.dll

  • Size

    348KB

  • MD5

    0890ffae079771502dde6378802ccb6f

  • SHA1

    b9bcba240c077f7c41f78bc963bfc1c7c4a1ba35

  • SHA256

    503dedc4758ed147987b60cd85cb733d8066834d8f67c32945352d46c5d772e7

  • SHA512

    e22fed1fe162c4a26cc9b2ec85bdd129d6523e6073ae39ea3c4c4bd7d5f799a1c7520963153b08660abf4a4e96f9c65dd6b4899d80c410d1513fd12635970e4d

  • SSDEEP

    3072:qfRBoKJlyQNZhF27Cr4LSz1RNeyOb2EqMGzs4VlS0q0EF:qpFHNrcur4LSz1RZOyEqMj4VlS0q0k

Malware Config

Signatures

  • Ramnit

    Ramnit is a versatile family that holds viruses, worms, and Trojans.

  • UPX dump on OEP (original entry point) 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 1 IoCs

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

  • Drops file in System32 directory 1 IoCs
  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\503dedc4758ed147987b60cd85cb733d8066834d8f67c32945352d46c5d772e7.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4956
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\503dedc4758ed147987b60cd85cb733d8066834d8f67c32945352d46c5d772e7.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:4600
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:1684
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1684 -s 516
          4⤵
          • Program crash
          PID:2580
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1684 -ip 1684
    1⤵
      PID:3028
    • 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 --no-appcompat-clear --mojo-platform-channel-handle=1032 --field-trial-handle=2228,i,521073434451423547,2311651514500527526,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:4596

      Network

            MITRE ATT&CK Matrix

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Temp\~TM738A.tmp

              Filesize

              1.6MB

              MD5

              4f3387277ccbd6d1f21ac5c07fe4ca68

              SHA1

              e16506f662dc92023bf82def1d621497c8ab5890

              SHA256

              767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac

              SHA512

              9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

            • C:\Windows\SysWOW64\rundll32mgr.exe

              Filesize

              157KB

              MD5

              2ad7467eeceedd64b8bd4f6e04c3cd49

              SHA1

              d6c5d9878dc49ae9b531d61283609e207154a921

              SHA256

              2aab17b2f18dfb70cd737b27b1a438ad8878889070a6e025b3684483054f60c9

              SHA512

              7a647d4a8de90d11cd5afb82ace8354869af0893f28afcf9491d1d4de421315d9a394a5d3462d88c0eff6c5a7a4ed41897d8d0498b59b4b7428ddbb61786be2a

            • memory/1684-5-0x0000000000400000-0x0000000000432000-memory.dmp

              Filesize

              200KB

            • memory/1684-7-0x0000000000400000-0x0000000000432000-memory.dmp

              Filesize

              200KB

            • memory/1684-10-0x00000000005C0000-0x00000000005F2000-memory.dmp

              Filesize

              200KB

            • memory/1684-11-0x0000000077EB2000-0x0000000077EB3000-memory.dmp

              Filesize

              4KB

            • memory/1684-12-0x0000000077EB2000-0x0000000077EB4000-memory.dmp

              Filesize

              8KB

            • memory/4600-1-0x0000000010000000-0x0000000010057000-memory.dmp

              Filesize

              348KB