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
    22-12-2024 07:42

General

  • Target

    c4a99dae29a2997532a0a9c1862107d2c05d0a4b4aa72313fdbd1f224ad6a54a.dll

  • Size

    184KB

  • MD5

    e0eaa8eb8127bf8e357b98ecf0d683ad

  • SHA1

    26b377892798c12f700cca966764030d00de312e

  • SHA256

    c4a99dae29a2997532a0a9c1862107d2c05d0a4b4aa72313fdbd1f224ad6a54a

  • SHA512

    31dfbbf8f523a4d11256451b9a1e3c5e8cb31a5584a60b3fa06086a0bade9ca36c8fe7be9aee67d51082b05a260cea3c9519b88ac65233a21f2d701de488da8a

  • SSDEEP

    3072:jn4cV8gf2u41Z5tKlw+riClf+gfjxbfkhbf:L4y8gOl2zrhlf++xYhb

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 12 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 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 28 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\c4a99dae29a2997532a0a9c1862107d2c05d0a4b4aa72313fdbd1f224ad6a54a.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4536
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\c4a99dae29a2997532a0a9c1862107d2c05d0a4b4aa72313fdbd1f224ad6a54a.dll,#1
      2⤵
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5096
      • 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:1604
        • 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:4740
          • C:\Windows\SysWOW64\svchost.exe
            C:\Windows\system32\svchost.exe
            5⤵
              PID:3536
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 3536 -s 84
                6⤵
                • Program crash
                PID:900
            • 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:4300
              • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4300 CREDAT:17410 /prefetch:2
                6⤵
                • System Location Discovery: System Language Discovery
                • Modifies Internet Explorer settings
                • Suspicious use of SetWindowsHookEx
                PID:100
            • 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:2324
              • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2324 CREDAT:17410 /prefetch:2
                6⤵
                • System Location Discovery: System Language Discovery
                • Modifies Internet Explorer settings
                • Suspicious use of SetWindowsHookEx
                PID:368
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3536 -ip 3536
      1⤵
        PID:2736

      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

        4eaf9b3a48166fb8e172b3a7f24579ff

        SHA1

        0f45af7ebcfc4e2a6fb9c6eded199411ef8de0ae

        SHA256

        6df30e165ee411a067f02df7637526554b5f4d69dc970f0d67d2ad5b78974d1b

        SHA512

        883f4c7db6a115cbe2c2618d882bb3731b60c5c8012f851beb73985703244e17b9e401c987fcfcd5fbc1f8c187a106ccc438004cdc2f0d0e0d745f9db0d2d338

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

        Filesize

        404B

        MD5

        2c33bc0a8da7c76d76cf3afb679f84f3

        SHA1

        968b4ff259cd8ff9f49726fc43731dccc652392f

        SHA256

        0e0345e6763fdb009a753e6055c71f8cafeb6679ce711416e823b957aa2ec436

        SHA512

        8ec9772e0f47afc2b3a0550ea647cdffdef54d3109915858211502658f033154b19d343209144f66134bf1ff09c89e62a068a5a96bdd4537285cbf976058ef2b

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

        Filesize

        404B

        MD5

        30514e804fa27dfc1cb4e435604b5427

        SHA1

        43690a44d0a7a8ef090d97526e927a8030f1fac5

        SHA256

        6faf0366a0f6d169157eba3df97f60e85641880a20ef54bb1cacd14e7e6a0c9b

        SHA512

        52c9249f0b56b4c355b68cf2a80a4e56b90e1bb008e6af9eea8a10944258f5ab0eb92172636d24246b9e60343aeb7d9a1a39188734ca38fb070529de02935562

      • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{54E2F34C-C038-11EF-9361-520873AEBE93}.dat

        Filesize

        5KB

        MD5

        b9dfcfde12166a1f250c743d07f266b9

        SHA1

        8d39c885fff3b062ffb9e4015e0de57966116f62

        SHA256

        9e44bf1f9acbf6fac712c15939d6de3edf18dd424baf99809ce64bdbcac83415

        SHA512

        e3d69d8ba86dfec46a57b6452761eade097b90971eae94739855403511a9d01b6137434156bdb5210e69ab296842c94bf0cc241fce76153dd1ae970c417fec89

      • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{54E55553-C038-11EF-9361-520873AEBE93}.dat

        Filesize

        4KB

        MD5

        f39e326d44a526ba791e7645807b1ce6

        SHA1

        3c7ff667ac25bdc3d3b6bd0c6026547318115182

        SHA256

        8c00014d190b32472126734a28a9509d28cded11c3fa8e7505ad0d9a9189e94a

        SHA512

        960f65b6b38d0fcb8d107f3498a3f21cc00e6c251d66275b2100a81d92939ac4107a887efb0a95968f97c052775947b73e48987ac9ad7e7736b23a86adc024ef

      • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\ver4503.tmp

        Filesize

        15KB

        MD5

        1a545d0052b581fbb2ab4c52133846bc

        SHA1

        62f3266a9b9925cd6d98658b92adec673cbe3dd3

        SHA256

        557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

        SHA512

        bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\0BHOTC3C\suggestions[1].en-US

        Filesize

        17KB

        MD5

        5a34cb996293fde2cb7a4ac89587393a

        SHA1

        3c96c993500690d1a77873cd62bc639b3a10653f

        SHA256

        c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

        SHA512

        e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

      • C:\Windows\SysWOW64\rundll32mgr.exe

        Filesize

        92KB

        MD5

        dace075bf1731bb90fc56f559f9e864f

        SHA1

        2147f6b576b71bba1f1c1117f86ecb123e941bab

        SHA256

        bc2ed6ce2caca16e2d4f77e2f59608fa901993a87a419e8066cda64eae8b9e8d

        SHA512

        f28c6c90c8ea26f8af6a62963249f4c420605040d2048db0b516dcd10f196173ea9dfbc8ab595db5241e0f3c4f57e9db690eb57abd4d795278f748651a01d0cf

      • memory/1604-13-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/1604-6-0x0000000000401000-0x0000000000404000-memory.dmp

        Filesize

        12KB

      • memory/1604-15-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/1604-12-0x00000000008A0000-0x00000000008A1000-memory.dmp

        Filesize

        4KB

      • memory/1604-10-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/1604-9-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/1604-8-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/1604-31-0x0000000000401000-0x0000000000404000-memory.dmp

        Filesize

        12KB

      • memory/1604-14-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/1604-11-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/1604-4-0x0000000000400000-0x0000000000429000-memory.dmp

        Filesize

        164KB

      • memory/1604-7-0x0000000000400000-0x0000000000429000-memory.dmp

        Filesize

        164KB

      • memory/3536-35-0x00000000004D0000-0x00000000004D1000-memory.dmp

        Filesize

        4KB

      • memory/3536-36-0x00000000004B0000-0x00000000004B1000-memory.dmp

        Filesize

        4KB

      • memory/4740-32-0x0000000000060000-0x0000000000061000-memory.dmp

        Filesize

        4KB

      • memory/4740-37-0x0000000000070000-0x0000000000071000-memory.dmp

        Filesize

        4KB

      • memory/4740-41-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/4740-39-0x0000000077DB2000-0x0000000077DB3000-memory.dmp

        Filesize

        4KB

      • memory/4740-43-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/4740-38-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/4740-33-0x0000000077DB2000-0x0000000077DB3000-memory.dmp

        Filesize

        4KB

      • memory/4740-30-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/4740-26-0x0000000000400000-0x0000000000429000-memory.dmp

        Filesize

        164KB

      • memory/5096-0-0x0000000010000000-0x000000001002F000-memory.dmp

        Filesize

        188KB