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Analysis

  • max time kernel
    93s
  • max time network
    120s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/01/2025, 07:11

General

  • Target

    f91ec0b7844995cf71c92ac16afafd45cca77bc74c4394e7f5119a9b7f0b1532N.dll

  • Size

    504KB

  • MD5

    a750fe49a05a90b4daa897a0d65a70a0

  • SHA1

    3df4421793e529abf8f0402f56a3098ff8fe0b73

  • SHA256

    f91ec0b7844995cf71c92ac16afafd45cca77bc74c4394e7f5119a9b7f0b1532

  • SHA512

    ba64d42a5492e15a470d6ab55dd693276ca9b5e5a29f3d1871737980d7614bde256f91a3704b32a8df4916714e94ba12737c4982f52613dce7af2d51beee0aab

  • SSDEEP

    12288:/h8fZLyb9PzVMBC/HVMOp4PkxHLCYwZckMQMNM3I9zjz:/8F+Pzr/Hfp4MIYwZckMQmMsXz

Malware Config

Signatures

  • Ramnit

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

  • Ramnit family
  • Executes dropped EXE 2 IoCs
  • Drops file in System32 directory 1 IoCs
  • UPX packed file 10 IoCs

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

  • Drops file in Program Files directory 3 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 45 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\f91ec0b7844995cf71c92ac16afafd45cca77bc74c4394e7f5119a9b7f0b1532N.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2356
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\f91ec0b7844995cf71c92ac16afafd45cca77bc74c4394e7f5119a9b7f0b1532N.dll,#1
      2⤵
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4036
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of UnmapMainImage
        • Suspicious use of WriteProcessMemory
        PID:4412
        • C:\Program Files (x86)\Microsoft\WaterMark.exe
          "C:\Program Files (x86)\Microsoft\WaterMark.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of UnmapMainImage
          • Suspicious use of WriteProcessMemory
          PID:3784
          • C:\Windows\SysWOW64\svchost.exe
            C:\Windows\system32\svchost.exe
            5⤵
              PID:1812
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 1812 -s 204
                6⤵
                • Program crash
                PID:3716
            • C:\Program Files\Internet Explorer\iexplore.exe
              "C:\Program Files\Internet Explorer\iexplore.exe"
              5⤵
              • Modifies Internet Explorer settings
              • Suspicious use of FindShellTrayWindow
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              PID:4168
              • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4168 CREDAT:17410 /prefetch:2
                6⤵
                • System Location Discovery: System Language Discovery
                • Modifies Internet Explorer settings
                • Suspicious use of SetWindowsHookEx
                PID:2004
            • C:\Program Files\Internet Explorer\iexplore.exe
              "C:\Program Files\Internet Explorer\iexplore.exe"
              5⤵
              • Modifies Internet Explorer settings
              • Suspicious use of FindShellTrayWindow
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              PID:2088
              • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2088 CREDAT:17410 /prefetch:2
                6⤵
                • System Location Discovery: System Language Discovery
                • Modifies Internet Explorer settings
                • Suspicious use of SetWindowsHookEx
                PID:5064
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1812 -ip 1812
      1⤵
        PID:5072

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

        Filesize

        471B

        MD5

        9e22a9c34466faf7bc9cf642444b3f30

        SHA1

        0ac45262532cce40083cc9049fb12d4efb06c01f

        SHA256

        57569469879a3144b391cf9def258ad9ef29d7fd1d3d70a28cfb506443d7a119

        SHA512

        c60649fb0ecdd14c9a6d8f9ea7ac4356b24a5e1a238705bbc8294b72ea2fda21965af200746ae20dd5f45e386fc30e2189de6007e08ff3d7ec72b8dfc39435fe

      • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

        Filesize

        404B

        MD5

        695791f8d962f5836e1ba3173034d9ec

        SHA1

        27c5a9492446001b580b299c46310af1cfde90e8

        SHA256

        ed63af6a7f1f5e201215ebd3f0de0d15dd2385846261d42b3e2bb138d3642250

        SHA512

        ff28055d4ca32514181672c1fc356c4a9a3c89f5783918376e515027179fa8687c9b6b577a2259c6b03df6c56349062663cb13d6a37e82ee4f62d4295acbf266

      • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

        Filesize

        404B

        MD5

        3ace42f0d0244754fbe2025ad0963189

        SHA1

        0852b4fc351f4f8fbe6691bbad29be56777213dc

        SHA256

        85a61abf1e284da0f6b46c17dbc950ea3c28154c54128d5ecffa09fdd8da6b00

        SHA512

        e18dfadb599883578b60d01a5d194d92f74dae029c3a00f977b366b112f0479e26220cda4ac8bf9bfc9bd5f5427ff99d8a454fe44191e4d208f38e92bfaebf29

      • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{18A44FAD-D3D9-11EF-BDBF-F6235BFAC6D3}.dat

        Filesize

        5KB

        MD5

        f38224553b15c9bd6486e9158c8e5026

        SHA1

        3360d72e1b7ea58209c18330dc593df76b14c678

        SHA256

        0ccbfa690c4cc063bca9361e96d651c55ccfbc3102c9b7beb7a1bd2c00928874

        SHA512

        c7efd1afb812d520b9bf9af80f182e4e4f9ff2415f4647a45980e693dab657765a240f53ae89644462eaf1f1150ee7181ad2cf599469f960aed6d206f81d7668

      • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{18A6B2FE-D3D9-11EF-BDBF-F6235BFAC6D3}.dat

        Filesize

        3KB

        MD5

        1ce70a28e893b2b0f3d7f5ebe712ebee

        SHA1

        721ba4b93aac9f43a1dc08df9e8f69e664cab60f

        SHA256

        02a904d53b01440091ea7d4a30abab664cfb4c4625c934fe0190a850ba3c473a

        SHA512

        e11dcdf914815855fa883fcf3f9289dfb220656f134b1036f27ae80cca90914de7403db181bc9f83e9f83660ce063dccbe8fd522390296930a515104f05c56b7

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\6IJLDY7V\suggestions[1].en-US

        Filesize

        17KB

        MD5

        5a34cb996293fde2cb7a4ac89587393a

        SHA1

        3c96c993500690d1a77873cd62bc639b3a10653f

        SHA256

        c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

        SHA512

        e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

      • C:\Windows\SysWOW64\rundll32mgr.exe

        Filesize

        69KB

        MD5

        03a048104272c7aabc167e893cc6d3cd

        SHA1

        304fdf6a45f2e4e422365f836ae526af3cd72af6

        SHA256

        cc3aa2d0788746f8e848b6e59142502ca61afe72c380c6f44b353064567b33d5

        SHA512

        0989ecced26ca343f2924b6407299886fe47b59e00ac9e9f51c0e4145d06f64d6aa0db1c2e28a0fcba343609aef39682916a809b786139c45bcc4adb28ec5df1

      • memory/1812-32-0x0000000000910000-0x0000000000911000-memory.dmp

        Filesize

        4KB

      • memory/1812-31-0x0000000000930000-0x0000000000931000-memory.dmp

        Filesize

        4KB

      • memory/3784-38-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/3784-28-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/3784-26-0x00000000001D0000-0x00000000001D1000-memory.dmp

        Filesize

        4KB

      • memory/3784-29-0x0000000077172000-0x0000000077173000-memory.dmp

        Filesize

        4KB

      • memory/3784-34-0x0000000000070000-0x0000000000071000-memory.dmp

        Filesize

        4KB

      • memory/3784-33-0x0000000077172000-0x0000000077173000-memory.dmp

        Filesize

        4KB

      • memory/3784-35-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/4036-0-0x0000000010000000-0x0000000010083000-memory.dmp

        Filesize

        524KB

      • memory/4412-10-0x00000000001B0000-0x00000000001B1000-memory.dmp

        Filesize

        4KB

      • memory/4412-5-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/4412-6-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/4412-7-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/4412-9-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/4412-14-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/4412-12-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/4412-11-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB