Analysis

  • max time kernel
    129s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/12/2023, 12:50

General

  • Target

    1fc8a045d27bb49066562441be908997.exe

  • Size

    124KB

  • MD5

    1fc8a045d27bb49066562441be908997

  • SHA1

    a04b9dd5f27932f6cdb6ddfcecb36f15e73041ed

  • SHA256

    36d3b50ffe4f63ad56648c586d76b80094c625db7c2c0309b9848dd95972f123

  • SHA512

    9e4f2c7c535626fb1a9560229658966c1affba2d24652721905ee590cba338a9fb58ae1ff019a20a37e9596d78c000e263fc687c67f1219ded799d59b35b6cec

  • SSDEEP

    3072:vDSKiauBZz/DhceNw1OTw+XIU5jwaaHw7Koj4rBV:rSKbwhdcqYIhXNA

Malware Config

Signatures

  • Ramnit

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 2 IoCs
  • Modifies Internet Explorer settings 1 TTPs 36 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1fc8a045d27bb49066562441be908997.exe
    "C:\Users\Admin\AppData\Local\Temp\1fc8a045d27bb49066562441be908997.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5064
    • C:\Windows\SysWOW64\svchost.exe
      C:\Windows\system32\svchost.exe
      2⤵
        PID:2260
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2260 -s 204
          3⤵
          • Program crash
          PID:5116
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1440
        • 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:2380
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2380 CREDAT:17410 /prefetch:2
            4⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:872
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2380 CREDAT:82950 /prefetch:2
            4⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:3028
      • C:\Windows\SysWOW64\svchost.exe
        C:\Windows\system32\svchost.exe
        2⤵
          PID:3920
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 3920 -s 204
            3⤵
            • Program crash
            PID:3572
        • C:\Program Files (x86)\Internet Explorer\iexplore.exe
          "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2964
          • C:\Program Files\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files\Internet Explorer\IEXPLORE.EXE"
            3⤵
            • Modifies Internet Explorer settings
            PID:4036
        • C:\Users\Admin\AppData\Local\Temp\dnpkqbhsnyxcplvh.exe
          "C:\Users\Admin\AppData\Local\Temp\dnpkqbhsnyxcplvh.exe"
          2⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          PID:4844
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2260 -ip 2260
        1⤵
          PID:5040
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 3920 -ip 3920
          1⤵
            PID:4048

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\L3T8W3B4\suggestions[1].en-US

            Filesize

            17KB

            MD5

            5a34cb996293fde2cb7a4ac89587393a

            SHA1

            3c96c993500690d1a77873cd62bc639b3a10653f

            SHA256

            c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

            SHA512

            e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

          • C:\Users\Admin\AppData\Local\Temp\dnpkqbhsnyxcplvh.exe

            Filesize

            124KB

            MD5

            1fc8a045d27bb49066562441be908997

            SHA1

            a04b9dd5f27932f6cdb6ddfcecb36f15e73041ed

            SHA256

            36d3b50ffe4f63ad56648c586d76b80094c625db7c2c0309b9848dd95972f123

            SHA512

            9e4f2c7c535626fb1a9560229658966c1affba2d24652721905ee590cba338a9fb58ae1ff019a20a37e9596d78c000e263fc687c67f1219ded799d59b35b6cec

          • memory/2260-8-0x0000000000410000-0x0000000000411000-memory.dmp

            Filesize

            4KB

          • memory/2260-9-0x00000000001F0000-0x00000000001F1000-memory.dmp

            Filesize

            4KB

          • memory/4844-35-0x0000000000400000-0x000000000043A20C-memory.dmp

            Filesize

            232KB

          • memory/4844-33-0x00000000005B0000-0x00000000005B2000-memory.dmp

            Filesize

            8KB

          • memory/5064-10-0x0000000000400000-0x000000000043A20C-memory.dmp

            Filesize

            232KB

          • memory/5064-6-0x0000000077612000-0x0000000077613000-memory.dmp

            Filesize

            4KB

          • memory/5064-0-0x0000000000400000-0x000000000043A20C-memory.dmp

            Filesize

            232KB

          • memory/5064-12-0x0000000002190000-0x0000000002192000-memory.dmp

            Filesize

            8KB

          • memory/5064-16-0x0000000000400000-0x000000000043A20C-memory.dmp

            Filesize

            232KB

          • memory/5064-18-0x0000000077612000-0x0000000077613000-memory.dmp

            Filesize

            4KB

          • memory/5064-23-0x0000000000400000-0x000000000043A20C-memory.dmp

            Filesize

            232KB

          • memory/5064-5-0x00000000021B0000-0x00000000021B1000-memory.dmp

            Filesize

            4KB

          • memory/5064-4-0x00000000021A0000-0x00000000021A1000-memory.dmp

            Filesize

            4KB

          • memory/5064-2-0x0000000002190000-0x0000000002192000-memory.dmp

            Filesize

            8KB

          • memory/5064-1-0x0000000000400000-0x000000000043A20C-memory.dmp

            Filesize

            232KB