Analysis

  • max time kernel
    128s
  • max time network
    143s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    15-05-2021 12:19

General

  • Target

    78e126bba4f96659f196059341983d4a6704050113a132507c5f8c6918968628.dll

  • Size

    303KB

  • MD5

    740d41dd50b5b278cdfda9ffe0d86944

  • SHA1

    a09e80f4f8160b20f9f93c2875e17197c5e10023

  • SHA256

    78e126bba4f96659f196059341983d4a6704050113a132507c5f8c6918968628

  • SHA512

    73a43e59915b145b5fd57faad55111bf4aca75e8cc92f4e4bf7f82ddb39424d5df53687988ddeb8fec6a3ff7da8b67f0b49ed846c1d30ba922ffddf0f9d6372d

Malware Config

Signatures

  • Ramnit

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

  • Executes dropped EXE 2 IoCs
  • UPX packed file 5 IoCs

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

  • Drops file in System32 directory 1 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Checks processor information in registry 2 TTPs 8 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies Internet Explorer settings 1 TTPs 40 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 21 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\78e126bba4f96659f196059341983d4a6704050113a132507c5f8c6918968628.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3016
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\78e126bba4f96659f196059341983d4a6704050113a132507c5f8c6918968628.dll,#1
      2⤵
      • Drops file in System32 directory
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3220
      • C:\Windows\SysWOW64\rundll32Srv.exe
        C:\Windows\SysWOW64\rundll32Srv.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of WriteProcessMemory
        PID:1640
        • C:\Program Files (x86)\Microsoft\DesktopLayer.exe
          "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1856
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe"
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:2456
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2456 CREDAT:82945 /prefetch:2
              6⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:3540

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\Microsoft\DesktopLayer.exe
    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • C:\Program Files (x86)\Microsoft\DesktopLayer.exe
    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
    MD5

    a0a5a4d72ad62fd610b043c84033deaf

    SHA1

    aa5c3deaba3b479e004880b369f63f2b59b23b9a

    SHA256

    35d20d28885d84fef2a2e06125bf9626fbab13b99d1238a435a444a8db1cb9c6

    SHA512

    20dd0d4276e854bca2767bd4cf7f04068a23742ff33926a7ba5296d2b0a453d456f37662e443c4df2fc3027bbead658a8ca6f8be40a61c82e3d6085cf85b9243

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
    MD5

    0fc3e549bb301eb83ad55fe02a179610

    SHA1

    425e7c7b294fc54ea3f1dce8fffcff69533516f8

    SHA256

    c8cd0015b6a9d7efc9bf6cbc9f0c247c47375e997e7ef1aae134d9b75b18d241

    SHA512

    ef78f47c8c73901a89bef2a3fcdfda243f1a62e921a849ef344d23aa9c03c8ca5f8aff5ca9d618efae88f54f0970b3855a4d0804d8cce9cdb075a8304b21edcf

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCookies\08B8FXHK.cookie
    MD5

    bbcfd7c1973f2667d0035c7882edf1f9

    SHA1

    bb7ff9a9fce1b99e20c0faf64bfa84165c0860a1

    SHA256

    887e540a2964799231c1d17cc9a359c5cdca6c4d85c7f096a22eaee26561a332

    SHA512

    cf1b3e01837bd4a6a507a8a4ec359d7d3357a83c0727193a993ca5b9955874ad07954dd0666e6a24699058e4120345bdf81be5cf139e86e2086c9d3db7f7cfb6

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCookies\A0SU1RMW.cookie
    MD5

    e305800c401aa1f8d1b23f9a5bc89ef8

    SHA1

    fd8c3c99d770f4ed7457eac19a7fa27ba41dbddd

    SHA256

    91a20622497e8673d03ee13913773db56978957a869bc419232c68addf893fe3

    SHA512

    e0eec504cd12d669c7d76d3706a1c9dcee113b2df965e83be0ef2ada0ddfbfe054abae92ffff2bd7241f6953081a9896d9290acb7e9aeb599c8e43eb4c6afdec

  • C:\Windows\SysWOW64\rundll32Srv.exe
    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • C:\Windows\SysWOW64\rundll32Srv.exe
    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • memory/1640-125-0x00000000001E0000-0x00000000001EF000-memory.dmp
    Filesize

    60KB

  • memory/1640-115-0x0000000000000000-mapping.dmp
  • memory/1640-126-0x0000000000400000-0x000000000042E000-memory.dmp
    Filesize

    184KB

  • memory/1856-118-0x0000000000000000-mapping.dmp
  • memory/1856-121-0x00000000001F0000-0x00000000001F1000-memory.dmp
    Filesize

    4KB

  • memory/2456-123-0x00007FFDFDA90000-0x00007FFDFDAFB000-memory.dmp
    Filesize

    428KB

  • memory/2456-122-0x0000000000000000-mapping.dmp
  • memory/3220-114-0x0000000000000000-mapping.dmp
  • memory/3540-124-0x0000000000000000-mapping.dmp