Analysis

  • max time kernel
    151s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    08-07-2022 18:15

General

  • Target

    40561f8069295722930f352f8fa3b550d7e8eff109379e2b88a0e55ce3581158.exe

  • Size

    1.7MB

  • MD5

    cde835f75a632aed7cfc66e23302a65e

  • SHA1

    5ee8647db83f08e1cb6eb49e374ee22ceb1f2aec

  • SHA256

    40561f8069295722930f352f8fa3b550d7e8eff109379e2b88a0e55ce3581158

  • SHA512

    886fc8ef422f3acf8a793c64fc1528cfd3b2ae8fc8e79395ff2ced76ca38b0a8bad1b46d60c74766b49bb13c24ae38386359b177045a3e1294d5605dbfef21eb

Malware Config

Signatures

  • Ramnit

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

  • Executes dropped EXE 2 IoCs
  • UPX packed file 6 IoCs

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

  • Drops file in Program Files directory 3 IoCs
  • Modifies Internet Explorer settings 1 TTPs 47 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\40561f8069295722930f352f8fa3b550d7e8eff109379e2b88a0e55ce3581158.exe
    "C:\Users\Admin\AppData\Local\Temp\40561f8069295722930f352f8fa3b550d7e8eff109379e2b88a0e55ce3581158.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1880
    • C:\Users\Admin\AppData\Local\Temp\40561f8069295722930f352f8fa3b550d7e8eff109379e2b88a0e55ce3581158Srv.exe
      C:\Users\Admin\AppData\Local\Temp\40561f8069295722930f352f8fa3b550d7e8eff109379e2b88a0e55ce3581158Srv.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:2092
      • 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:4156
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe"
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1436
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1436 CREDAT:17410 /prefetch:2
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of SetWindowsHookEx
      PID:4360

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

1
T1112

Replay Monitor

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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\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
    Filesize

    471B

    MD5

    792d1cce1523ee29fa8eac86e4ad0b5d

    SHA1

    dbea5ff511dc06e72abc982c287a831385ecaf54

    SHA256

    a852ffad56b7ca65729a0311c4056024f5e6becbae353a4cf83a560cecd7399d

    SHA512

    199cde64a2cf0064a8786cd1fb544f225dd42b90b78013e97b238daebe8e641e716be51ae8840fd6def08d50242abdb68732e126160cc66d9bb7a0e4e3386631

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

    404B

    MD5

    886421a7fa12e38a05fea4e1cc2a3bee

    SHA1

    4b0dc1ae07f558161a48ed1886e5f98dd03480f4

    SHA256

    50b2d6184c9994bafc8d2facdf8298b9fb000acc2280f701827fc5d8005463e6

    SHA512

    340be8af70251f467724e08d3039e7583e41243a1a76c21058280178be01c70b9fc319f3b0562bdce599ed00a62eacbfbb21ba7afa509165d8c56dc4fe791880

  • C:\Users\Admin\AppData\Local\Temp\40561f8069295722930f352f8fa3b550d7e8eff109379e2b88a0e55ce3581158Srv.exe
    Filesize

    55KB

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • C:\Users\Admin\AppData\Local\Temp\40561f8069295722930f352f8fa3b550d7e8eff109379e2b88a0e55ce3581158Srv.exe
    Filesize

    55KB

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • memory/1880-130-0x0000000000AB0000-0x0000000000C61000-memory.dmp
    Filesize

    1.7MB

  • memory/1880-139-0x0000000000AB0000-0x0000000000C61000-memory.dmp
    Filesize

    1.7MB

  • memory/2092-131-0x0000000000000000-mapping.dmp
  • memory/2092-136-0x0000000000400000-0x000000000042E000-memory.dmp
    Filesize

    184KB

  • memory/4156-134-0x0000000000000000-mapping.dmp
  • memory/4156-138-0x0000000000400000-0x000000000042E000-memory.dmp
    Filesize

    184KB