Analysis

  • max time kernel
    143s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    27-11-2022 19:40

General

  • Target

    42a0cb57d66fcdb2f675ae022e51065762e70b4af92b55404a9162acbc65a4ae.exe

  • Size

    3.2MB

  • MD5

    e3b023bc62fa57bc1c0bc3efb6b67859

  • SHA1

    30cb11f68504456b276dd31cf1bf4b7868176e61

  • SHA256

    42a0cb57d66fcdb2f675ae022e51065762e70b4af92b55404a9162acbc65a4ae

  • SHA512

    4f3b0e3b608922e736c5611f360a69407bdc2b01382882bf934dbec28770a81448789d09f3610a9a5fcfb3f66cfd72700672ec2b9e5e4699c0edfb7a1f2880a8

  • SSDEEP

    98304:3DLQA8AONk/6rb5CMMoDc7QIxj8hoVtJQ2:TQFNkElqP/

Malware Config

Signatures

  • Ramnit

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

  • Executes dropped EXE 2 IoCs
  • UPX packed file 8 IoCs

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

  • Loads dropped DLL 5 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 28 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\42a0cb57d66fcdb2f675ae022e51065762e70b4af92b55404a9162acbc65a4ae.exe
    "C:\Users\Admin\AppData\Local\Temp\42a0cb57d66fcdb2f675ae022e51065762e70b4af92b55404a9162acbc65a4ae.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:828
    • C:\Users\Admin\AppData\Local\Temp\42a0cb57d66fcdb2f675ae022e51065762e70b4af92b55404a9162acbc65a4aeSrv.exe
      C:\Users\Admin\AppData\Local\Temp\42a0cb57d66fcdb2f675ae022e51065762e70b4af92b55404a9162acbc65a4aeSrv.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:268
      • 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:1300
        • 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:1988
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1988 CREDAT:275457 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:1752

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

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\42a0cb57d66fcdb2f675ae022e51065762e70b4af92b55404a9162acbc65a4aeSrv.exe
    Filesize

    55KB

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • C:\Users\Admin\AppData\Local\Temp\42a0cb57d66fcdb2f675ae022e51065762e70b4af92b55404a9162acbc65a4aeSrv.exe
    Filesize

    55KB

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\MOAQF6A1.txt
    Filesize

    603B

    MD5

    6a8feecec9733afb549adf767c83122e

    SHA1

    3ce9019819a9eac844f58f043d3db6859b03c3c8

    SHA256

    9751cef8e6ea8451da486e2dbd12c70758cbd61109a76ad9f1b17bc06d770578

    SHA512

    8ad8eb69fe9d0d919b8fbf99c4ffc9821ec9d2e2f8b27ee898f22d6b44f5c85c03e1286abf83dd336766df4245fcacf1dc02f8237cd90708711872e828218a90

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

    55KB

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • \Users\Admin\AppData\Local\Temp\42a0cb57d66fcdb2f675ae022e51065762e70b4af92b55404a9162acbc65a4aeSrv.exe
    Filesize

    55KB

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • \Users\Admin\AppData\Local\Temp\nsj349A.tmp\ButtonLinker.dll
    Filesize

    7KB

    MD5

    dd85ac7d85c92dd0e3cc17dfd4890f54

    SHA1

    a128fb7a05965c1a9913c6f5e419e6c4c0a7d2fa

    SHA256

    27abd2a4fb1bf66add60221b52d061bbe24d2d21e13600725ff7a5c6c777b504

    SHA512

    e4ff8216c65110a9d156f37c2062acb53a72daa8af12dfc24278920d9e1a4083a81b1446759df75405b2da34c7bfb1afc33184feedd0aee4ed73f79fcbb1a8a1

  • \Users\Admin\AppData\Local\Temp\nsj349A.tmp\System.dll
    Filesize

    67KB

    MD5

    8fef2ddc02a88527acf5f875aa79590a

    SHA1

    b3ebe53a0037789c155992eee0547de1a76712b9

    SHA256

    5b06944f0b948937d87a68d0d584f8de8f169298f5db95336f55696079e88d50

    SHA512

    7f231356313b7aa4882bfd205529d65022397c91a5aab3658d655524aa3bfe855432ac35cd455f8750530e1b9582e71c710abb94d610ff1ec3e13d5a193d19de

  • \Users\Admin\AppData\Local\Temp\nsj349A.tmp\System.dll
    Filesize

    67KB

    MD5

    8fef2ddc02a88527acf5f875aa79590a

    SHA1

    b3ebe53a0037789c155992eee0547de1a76712b9

    SHA256

    5b06944f0b948937d87a68d0d584f8de8f169298f5db95336f55696079e88d50

    SHA512

    7f231356313b7aa4882bfd205529d65022397c91a5aab3658d655524aa3bfe855432ac35cd455f8750530e1b9582e71c710abb94d610ff1ec3e13d5a193d19de

  • memory/268-57-0x0000000000000000-mapping.dmp
  • memory/268-65-0x0000000000400000-0x000000000042E000-memory.dmp
    Filesize

    184KB

  • memory/828-54-0x0000000075AC1000-0x0000000075AC3000-memory.dmp
    Filesize

    8KB

  • memory/828-72-0x0000000000500000-0x000000000052E000-memory.dmp
    Filesize

    184KB

  • memory/828-70-0x0000000010000000-0x0000000010015000-memory.dmp
    Filesize

    84KB

  • memory/828-71-0x0000000000500000-0x000000000052E000-memory.dmp
    Filesize

    184KB

  • memory/1300-63-0x0000000000000000-mapping.dmp
  • memory/1300-68-0x0000000000400000-0x000000000042E000-memory.dmp
    Filesize

    184KB