Analysis

  • max time kernel
    95s
  • max time network
    116s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-12-2024 03:09

General

  • Target

    b77fdca9b9773d4ab265d86d7c0866ec701eb8057fc0c7c9d782ddfaafc78b55N.exe

  • Size

    160KB

  • MD5

    ef13e22525f585a738f84e309b3aa180

  • SHA1

    cf24509c855e6ca356e923a18c276de31232d26f

  • SHA256

    b77fdca9b9773d4ab265d86d7c0866ec701eb8057fc0c7c9d782ddfaafc78b55

  • SHA512

    a5cdd735d1b7999d7d18483dee627112e4d3fb669c4bedf59eba9dcbe0c449f59ab870e75888d4ea233c4a3f2ce789da196b4b3ec2c0a3c80059cdf8241ad1c8

  • SSDEEP

    3072:CT2xNfzEmPUac0yCRS9EK0TLmtmaYNELh/:GkPpe0m1YN

Malware Config

Signatures

  • Ramnit

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

  • Ramnit family
  • Executes dropped EXE 1 IoCs
  • UPX packed file 14 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 4 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 51 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 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b77fdca9b9773d4ab265d86d7c0866ec701eb8057fc0c7c9d782ddfaafc78b55N.exe
    "C:\Users\Admin\AppData\Local\Temp\b77fdca9b9773d4ab265d86d7c0866ec701eb8057fc0c7c9d782ddfaafc78b55N.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2340
    • C:\Program Files (x86)\Microsoft\WaterMark.exe
      "C:\Program Files (x86)\Microsoft\WaterMark.exe"
      2⤵
      • 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:552
      • C:\Windows\SysWOW64\svchost.exe
        C:\Windows\system32\svchost.exe
        3⤵
          PID:1496
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 1496 -s 204
            4⤵
            • Program crash
            PID:3504
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          3⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2200
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2200 CREDAT:17410 /prefetch:2
            4⤵
            • System Location Discovery: System Language Discovery
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:4816
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          3⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:4444
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4444 CREDAT:17410 /prefetch:2
            4⤵
            • System Location Discovery: System Language Discovery
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:3264
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1496 -ip 1496
      1⤵
        PID:228

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Program Files (x86)\Microsoft\WaterMark.exe

        Filesize

        160KB

        MD5

        ef13e22525f585a738f84e309b3aa180

        SHA1

        cf24509c855e6ca356e923a18c276de31232d26f

        SHA256

        b77fdca9b9773d4ab265d86d7c0866ec701eb8057fc0c7c9d782ddfaafc78b55

        SHA512

        a5cdd735d1b7999d7d18483dee627112e4d3fb669c4bedf59eba9dcbe0c449f59ab870e75888d4ea233c4a3f2ce789da196b4b3ec2c0a3c80059cdf8241ad1c8

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

        Filesize

        471B

        MD5

        641fd00a680e2a2b7c46da9f49d4ac01

        SHA1

        91342c03f46164a5ffba758b6201387912e09026

        SHA256

        69b70d73aed768e709b4e26268d4bfbb349d3ed2d7fc7bba042a347b29f1062d

        SHA512

        004e47e9e0623bf782ad71418257088902bec47d213027287c46393d7a413d69a69fd213df1781d3c49ddde689943d5c5f3ff844fb9cc81c7eeaf331b8a4344f

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

        Filesize

        404B

        MD5

        fc81f1ecc342c19b35125da07941d90f

        SHA1

        577b8af7eabef9ae80205c1a5b269d1f0c0197a4

        SHA256

        449946db1f675487be5b5e1c8a1b7b7428e7ff3e4f1997e4fb72fcea5946f793

        SHA512

        639324f7130f3cc805d9ccc1c2c5384bd1ee103833606b707d9c506c624b864a2650fbb30dc3415e368af93861bb2afa1adef0e3f9856c6357927187ea00b7f8

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

        Filesize

        404B

        MD5

        6667b0a08f141c62be5f434f988737d3

        SHA1

        c5dbeec66312744180ed89d2450fd3787e2c4ebb

        SHA256

        9e611542f6a7afaef014a98b838c01d3f7e0e220409c5b4bd1cb2ffc235304b7

        SHA512

        cd5f2279d2904a852ef816647c54f2be3d7c052064165947567044a53d94fbd5fff7434c9ff08f74fb18308b8a2ebe9acfcdc3bd8c0559c5081d8b97b4e9bdf9

      • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{9465EA97-BCED-11EF-AF2A-520873AEBE93}.dat

        Filesize

        5KB

        MD5

        132bd3d6e2b6eb317f351e66adc8e192

        SHA1

        492e5655d510b01fe4613627b6505ec28246b352

        SHA256

        cb153bec47ed67a1caaa39440b1bfbe2dab380b340f6b366d96621316ea6c666

        SHA512

        aa86029d6419a7816dbd4a1fbf86b273fec4feb77ac0f26efaa753b4e1a34cfa51d78e82faafac454c6f53a37d4cc253a29ff060771b7ac2ea68684186dfa370

      • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{94684C6B-BCED-11EF-AF2A-520873AEBE93}.dat

        Filesize

        3KB

        MD5

        9f93096cfadc94464d838643a38b0736

        SHA1

        7d0e7c897a4f1fefdfe6f73109761dedcb45dbb2

        SHA256

        b5647f02b6ba8f9b4ee8617a981b80b09ae0a169aebbdcfef8fbd179ce95cfb7

        SHA512

        c6cc689d571e76a5dd80118e52da804d96094371cf0a34800f1e7c6a64ff9e09c6ca1407b2ca7710dd379a6ef86aa93c6751e7e37e4f4715ab619d85e5f3c30a

      • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\ver2EEB.tmp

        Filesize

        15KB

        MD5

        1a545d0052b581fbb2ab4c52133846bc

        SHA1

        62f3266a9b9925cd6d98658b92adec673cbe3dd3

        SHA256

        557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

        SHA512

        bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\DQ67RYHS\suggestions[1].en-US

        Filesize

        17KB

        MD5

        5a34cb996293fde2cb7a4ac89587393a

        SHA1

        3c96c993500690d1a77873cd62bc639b3a10653f

        SHA256

        c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

        SHA512

        e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

      • memory/552-34-0x0000000000070000-0x0000000000071000-memory.dmp

        Filesize

        4KB

      • memory/552-29-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/552-28-0x0000000077342000-0x0000000077343000-memory.dmp

        Filesize

        4KB

      • memory/552-27-0x0000000000430000-0x0000000000431000-memory.dmp

        Filesize

        4KB

      • memory/552-26-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/552-22-0x0000000000400000-0x0000000000459000-memory.dmp

        Filesize

        356KB

      • memory/552-39-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/552-36-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/552-35-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/552-33-0x0000000077342000-0x0000000077343000-memory.dmp

        Filesize

        4KB

      • memory/1496-32-0x0000000000A00000-0x0000000000A01000-memory.dmp

        Filesize

        4KB

      • memory/1496-31-0x0000000000A20000-0x0000000000A21000-memory.dmp

        Filesize

        4KB

      • memory/2340-0-0x0000000000400000-0x0000000000459000-memory.dmp

        Filesize

        356KB

      • memory/2340-4-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/2340-5-0x0000000000400000-0x0000000000459000-memory.dmp

        Filesize

        356KB

      • memory/2340-9-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/2340-3-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/2340-2-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/2340-11-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/2340-12-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/2340-8-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/2340-6-0x00000000024D0000-0x00000000024D1000-memory.dmp

        Filesize

        4KB

      • memory/2340-7-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/2340-1-0x0000000000401000-0x0000000000402000-memory.dmp

        Filesize

        4KB