Analysis

  • max time kernel
    139s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-01-2024 06:07

General

  • Target

    81aa05ab45e06efb51d79d4f83e43b80.exe

  • Size

    162KB

  • MD5

    81aa05ab45e06efb51d79d4f83e43b80

  • SHA1

    949645fb5252cab46004dfa1f8a27c7b439f0c04

  • SHA256

    73718442f7fb1a5c241aa2573194fdc51bf514aa1758dc35b550a3fa71cfd0b2

  • SHA512

    0721f4691b2a6b0336e01f8f2ae0ddc8b2e245db56b4fb04d83bf16f4f3f8df561d1306d06ff8fa1a9bdf83839205b592d7026a5cac66ca9db77064e9cd7c5cf

  • SSDEEP

    3072:REyXoN1VwNS1Jorf5qAHi6M0Lu/OIoZUlqhkZfsAS8dmFJ/geIOXBdFr8qq0Zv8:rXoN1SR3FLcNlu0Ef8ODIKB410C

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Modifies Internet Explorer settings 1 TTPs 32 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\81aa05ab45e06efb51d79d4f83e43b80.exe
    "C:\Users\Admin\AppData\Local\Temp\81aa05ab45e06efb51d79d4f83e43b80.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3184
    • C:\Users\Admin\AppData\Local\Temp\81aa05ab45e06efb51d79d4f83e43b80.exe
      "C:\Users\Admin\AppData\Local\Temp\81aa05ab45e06efb51d79d4f83e43b80.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:3552
      • C:\Users\Admin\AppData\Local\Temp\81aa05ab45e06efb51d79d4f83e43b80.exe
        "C:\Users\Admin\AppData\Local\Temp\81aa05ab45e06efb51d79d4f83e43b80.exe"
        3⤵
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:3640
        • C:\Users\Admin\AppData\Roaming\Bafnfo.exe
          "C:\Users\Admin\AppData\Roaming\Bafnfo.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:968
          • C:\Users\Admin\AppData\Roaming\Bafnfo.exe
            "C:\Users\Admin\AppData\Roaming\Bafnfo.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:3968
            • C:\Users\Admin\AppData\Roaming\Bafnfo.exe
              "C:\Users\Admin\AppData\Roaming\Bafnfo.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:2880
              • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:1536
                • C:\Program Files\Internet Explorer\IEXPLORE.EXE
                  "C:\Program Files\Internet Explorer\IEXPLORE.EXE"
                  8⤵
                  • Modifies Internet Explorer settings
                  • Suspicious use of FindShellTrayWindow
                  • Suspicious use of SetWindowsHookEx
                  • Suspicious use of WriteProcessMemory
                  PID:4928
                  • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                    "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4928 CREDAT:17410 /prefetch:2
                    9⤵
                    • Modifies Internet Explorer settings
                    • Suspicious use of AdjustPrivilegeToken
                    • Suspicious use of SetWindowsHookEx
                    PID:5068

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

    f707892eea2389f9570075e7e0b2ba49

    SHA1

    20c62e10bbf4210c8d4c7966785344f29c4a8024

    SHA256

    49f24b1fd45db9778b10ec10d9c85ef0746828225855255f3617ed06c485c1ba

    SHA512

    c7b662eab0356715eecedae5ecacc260731f131f2e2c388ed9c91c6c1a7ce23aa02965ffb2f3ccf041fb249c3f6d713a19d7292b6afa4f5091d3fd5a4c2e054e

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

    Filesize

    404B

    MD5

    3832a75f99a20d0800e3f0a0371b6aea

    SHA1

    e917d0c94682bd8b6acfaddd02f5bf9192a374fa

    SHA256

    81927c581be03aea9e626c7de6ddc92f3baa503398dbc0be0a8d72bb1fcfa23f

    SHA512

    732098d69d61541fdcd171a9641ba9256322f6431bb6f82aea999a0cc52f48581b68fbe870f6e6b55ae20ad145a1a78ba55f7c76121f062fad3516d1b6f214a6

  • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\verEE96.tmp

    Filesize

    15KB

    MD5

    1a545d0052b581fbb2ab4c52133846bc

    SHA1

    62f3266a9b9925cd6d98658b92adec673cbe3dd3

    SHA256

    557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

    SHA512

    bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\UG0DPB4T\suggestions[1].en-US

    Filesize

    17KB

    MD5

    5a34cb996293fde2cb7a4ac89587393a

    SHA1

    3c96c993500690d1a77873cd62bc639b3a10653f

    SHA256

    c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

    SHA512

    e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

  • C:\Users\Admin\AppData\Local\Temp\Ekg7afHe415gIxsl6af.tmp

    Filesize

    3KB

    MD5

    10a714b195635d9dea52883188903080

    SHA1

    488b06541880da79a4594bd1535cb2319dcdf262

    SHA256

    f49075fc33b842978a08a923dd2411f7dfbac0169e732b3fe44a2a1e07e22a00

    SHA512

    877945f6e2e43c3663ebd7abb534becd70af2b7ff84e3ea93cce14db90edaed1e7dd50b5f8f59c855285cb8add27aa791a8ea2299544599e2d8b922badb2a047

  • C:\Users\Admin\AppData\Roaming\Bafnfo.exe

    Filesize

    162KB

    MD5

    81aa05ab45e06efb51d79d4f83e43b80

    SHA1

    949645fb5252cab46004dfa1f8a27c7b439f0c04

    SHA256

    73718442f7fb1a5c241aa2573194fdc51bf514aa1758dc35b550a3fa71cfd0b2

    SHA512

    0721f4691b2a6b0336e01f8f2ae0ddc8b2e245db56b4fb04d83bf16f4f3f8df561d1306d06ff8fa1a9bdf83839205b592d7026a5cac66ca9db77064e9cd7c5cf

  • memory/2880-34-0x0000000000400000-0x000000000042A000-memory.dmp

    Filesize

    168KB

  • memory/2880-38-0x0000000000400000-0x000000000042A000-memory.dmp

    Filesize

    168KB

  • memory/3552-7-0x0000000000400000-0x000000000041D000-memory.dmp

    Filesize

    116KB

  • memory/3552-4-0x0000000000400000-0x000000000041D000-memory.dmp

    Filesize

    116KB

  • memory/3552-6-0x0000000000400000-0x000000000041D000-memory.dmp

    Filesize

    116KB

  • memory/3640-19-0x0000000000400000-0x000000000042A000-memory.dmp

    Filesize

    168KB

  • memory/3640-11-0x0000000000400000-0x000000000042A000-memory.dmp

    Filesize

    168KB

  • memory/3640-10-0x0000000000400000-0x000000000042A000-memory.dmp

    Filesize

    168KB

  • memory/3640-8-0x0000000000400000-0x000000000042A000-memory.dmp

    Filesize

    168KB