Analysis

  • max time kernel
    113s
  • max time network
    159s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    16-06-2022 02:29

General

  • Target

    280c9f1d465c2c41adcfd7bd7741870c0820a6541b39f87545e9180502b4e20c.exe

  • Size

    1012KB

  • MD5

    469f2cccb3b3f3d3a275b854d47e7587

  • SHA1

    7ca9ee855ce370e75715be748874bad2e4628160

  • SHA256

    280c9f1d465c2c41adcfd7bd7741870c0820a6541b39f87545e9180502b4e20c

  • SHA512

    3f16750b39338f5f3b2ef63bc1c6a154aa241041f154954b1091a3c147de119449c273c3f10ea3f426e784e67a2dc3d30e81bdb0fed845de6063d135715cd354

Malware Config

Signatures

  • Ramnit

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

  • Executes dropped EXE 2 IoCs
  • Stops running service(s) 3 TTPs
  • UPX packed file 8 IoCs

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

  • Deletes itself 1 IoCs
  • Loads dropped DLL 2 IoCs
  • AutoIT Executable 2 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in Program Files directory 3 IoCs
  • Launches sc.exe 1 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Kills process with taskkill 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 28 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\280c9f1d465c2c41adcfd7bd7741870c0820a6541b39f87545e9180502b4e20c.exe
    "C:\Users\Admin\AppData\Local\Temp\280c9f1d465c2c41adcfd7bd7741870c0820a6541b39f87545e9180502b4e20c.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1532
    • C:\Users\Admin\AppData\Local\Temp\280c9f1d465c2c41adcfd7bd7741870c0820a6541b39f87545e9180502b4e20cSrv.exe
      C:\Users\Admin\AppData\Local\Temp\280c9f1d465c2c41adcfd7bd7741870c0820a6541b39f87545e9180502b4e20cSrv.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:1204
      • C:\Program Files (x86)\Microsoft\DesktopLayer.exe
        "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1660
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1092
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1092 CREDAT:275457 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:1848
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c SC delete Updateuser
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1100
      • C:\Windows\system32\sc.exe
        SC delete Updateuser
        3⤵
        • Launches sc.exe
        PID:1732
    • C:\Windows\system32\cmd.exe
      cmd /c ping 127.0.0.1 -n 2 & taskkill /f /pid "1532"& del /q/f/a "C:\Users\Admin\AppData\Local\Temp\280c9f1d465c2c41adcfd7bd7741870c0820a6541b39f87545e9180502b4e20c.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1972
      • C:\Windows\system32\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • Runs ping.exe
        PID:536
      • C:\Windows\system32\taskkill.exe
        taskkill /f /pid "1532"
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1908

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Defense Evasion

Impair Defenses

1
T1562

Modify Registry

1
T1112

Discovery

Remote System Discovery

1
T1018

Impact

Service Stop

1
T1489

Replay Monitor

Loading Replay Monitor...

Downloads

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

    55KB

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

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

    55KB

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • C:\Users\Admin\AppData\Local\Temp\280c9f1d465c2c41adcfd7bd7741870c0820a6541b39f87545e9180502b4e20cSrv.exe
    Filesize

    55KB

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • C:\Users\Admin\AppData\Local\Temp\280c9f1d465c2c41adcfd7bd7741870c0820a6541b39f87545e9180502b4e20cSrv.exe
    Filesize

    55KB

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\W2BDA1EL.txt
    Filesize

    598B

    MD5

    94003f1503ec95edf5e997fb83158d1a

    SHA1

    9298a369aa0f0e4b08138932710c1dc7e80b6025

    SHA256

    034bff216021bc7427d52a7c7c09c193dc6153b851685679ce94bdbc36f99460

    SHA512

    f9764cef15a2c77cb141494a581aedc9839c7ddc6fb6adbec4999e19865926d620d2378d7865f6346bd7dcdf899304095d8e4a53f62c440fe13f2d8a0d59b56f

  • \Program Files (x86)\Microsoft\DesktopLayer.exe
    Filesize

    55KB

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • \Users\Admin\AppData\Local\Temp\280c9f1d465c2c41adcfd7bd7741870c0820a6541b39f87545e9180502b4e20cSrv.exe
    Filesize

    55KB

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • memory/536-71-0x0000000000000000-mapping.dmp
  • memory/1100-68-0x0000000000000000-mapping.dmp
  • memory/1204-64-0x0000000000400000-0x000000000042E000-memory.dmp
    Filesize

    184KB

  • memory/1204-57-0x0000000000000000-mapping.dmp
  • memory/1532-54-0x0000000076241000-0x0000000076243000-memory.dmp
    Filesize

    8KB

  • memory/1532-72-0x00000000012F0000-0x00000000013F5000-memory.dmp
    Filesize

    1.0MB

  • memory/1532-55-0x00000000012F0000-0x00000000013F5000-memory.dmp
    Filesize

    1.0MB

  • memory/1660-62-0x0000000000000000-mapping.dmp
  • memory/1660-67-0x0000000000400000-0x000000000042E000-memory.dmp
    Filesize

    184KB

  • memory/1732-69-0x0000000000000000-mapping.dmp
  • memory/1908-73-0x0000000000000000-mapping.dmp
  • memory/1972-70-0x0000000000000000-mapping.dmp