Analysis

  • max time kernel
    4294210s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20220311-en
  • submitted
    11-04-2022 03:05

General

  • Target

    %E5%88%9B%E8%BE%89%E4%BC%81%E4%B8%9A%E5%90%8D%E5%BD%95%E4%BF%A1%E6%81%AF%E6%90%9C%E7%B4%A2%E8%BD%AF%E4%BB%B6.exe

  • Size

    968KB

  • MD5

    b002b1aef58889242163dba60b7d6a47

  • SHA1

    360b5a679662061f20778d12a668ceb204179f00

  • SHA256

    4e707c27c365409032b8081092276d83498149589fa42c52271febbc5682bc81

  • SHA512

    ccdf7add0ccc3a9c9b8a98683a04deaa1fa5197a4002276f92bc303042a1c824cbd80706d5522d676fc907f7625673d2d8ae3a4c945be3fb62bdf92dfa185ec7

Malware Config

Signatures

  • Ramnit

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

  • Executes dropped EXE 2 IoCs
  • UPX packed file 31 IoCs

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

  • Loads dropped DLL 2 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in Program Files directory 3 IoCs
  • Modifies Internet Explorer settings 1 TTPs 28 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 9 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\%E5%88%9B%E8%BE%89%E4%BC%81%E4%B8%9A%E5%90%8D%E5%BD%95%E4%BF%A1%E6%81%AF%E6%90%9C%E7%B4%A2%E8%BD%AF%E4%BB%B6.exe
    "C:\Users\Admin\AppData\Local\Temp\%E5%88%9B%E8%BE%89%E4%BC%81%E4%B8%9A%E5%90%8D%E5%BD%95%E4%BF%A1%E6%81%AF%E6%90%9C%E7%B4%A2%E8%BD%AF%E4%BB%B6.exe"
    1⤵
    • Loads dropped DLL
    • Writes to the Master Boot Record (MBR)
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1824
    • C:\Users\Admin\AppData\Local\Temp\%E5%88%9B%E8%BE%89%E4%BC%81%E4%B8%9A%E5%90%8D%E5%BD%95%E4%BF%A1%E6%81%AF%E6%90%9C%E7%B4%A2%E8%BD%AF%E4%BB%B6Srv.exe
      C:\Users\Admin\AppData\Local\Temp\%E5%88%9B%E8%BE%89%E4%BC%81%E4%B8%9A%E5%90%8D%E5%BD%95%E4%BF%A1%E6%81%AF%E6%90%9C%E7%B4%A2%E8%BD%AF%E4%BB%B6Srv.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:1884
      • 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:672
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:812
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:812 CREDAT:275457 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:1880

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Bootkit

1
T1067

Defense Evasion

Modify Registry

1
T1112

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\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    449eac25d67ace068031c060f624a580

    SHA1

    d2e43276775007e39f86b3c35454e62008f263c1

    SHA256

    2b839890248ab82a5b33622e6d45ae972820d2636d0ae85d3c5c3e8015c48bfb

    SHA512

    068b41a25861964ed05fdfbf2f5860c365c67aa5c63188d1b57980aa4a165df02313dc26033160014e829f77415f40215a86bdaeae56bb8699c8b6e49b12d4f1

  • C:\Users\Admin\AppData\Local\Temp\%E5%88%9B%E8%BE%89%E4%BC%81%E4%B8%9A%E5%90%8D%E5%BD%95%E4%BF%A1%E6%81%AF%E6%90%9C%E7%B4%A2%E8%BD%AF%E4%BB%B6Srv.exe
    Filesize

    55KB

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • C:\Users\Admin\AppData\Local\Temp\%E5%88%9B%E8%BE%89%E4%BC%81%E4%B8%9A%E5%90%8D%E5%BD%95%E4%BF%A1%E6%81%AF%E6%90%9C%E7%B4%A2%E8%BD%AF%E4%BB%B6Srv.exe
    Filesize

    55KB

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\8H8WM2R5.txt
    Filesize

    604B

    MD5

    c4aeb744a644f4068b93878797006ed9

    SHA1

    59d424c4bc5ab0cf1718e8c77095dc0227fa3eea

    SHA256

    cf38b045ed56bb2101b8014d3f57857354f3aa6f18d78103a1c8a910a325333b

    SHA512

    809745eaea131f29cc10ab394047ba0f00668fab103648178d72045f90f6116988804fbac4e7e97a81427ac987aa698f81c336e699c1e6693cc8065fc66249c4

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

    55KB

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • \Users\Admin\AppData\Local\Temp\%E5%88%9B%E8%BE%89%E4%BC%81%E4%B8%9A%E5%90%8D%E5%BD%95%E4%BF%A1%E6%81%AF%E6%90%9C%E7%B4%A2%E8%BD%AF%E4%BB%B6Srv.exe
    Filesize

    55KB

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • memory/672-86-0x0000000000400000-0x000000000042E000-memory.dmp
    Filesize

    184KB

  • memory/672-76-0x0000000000240000-0x0000000000241000-memory.dmp
    Filesize

    4KB

  • memory/672-68-0x0000000000000000-mapping.dmp
  • memory/1824-77-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-94-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-62-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-72-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-79-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-81-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-67-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-54-0x0000000075271000-0x0000000075273000-memory.dmp
    Filesize

    8KB

  • memory/1824-85-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-63-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-88-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-90-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-65-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-60-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-92-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-83-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-96-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-98-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-100-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-104-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-102-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-106-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-108-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1824-110-0x0000000010000000-0x000000001003D000-memory.dmp
    Filesize

    244KB

  • memory/1884-70-0x0000000000400000-0x000000000042E000-memory.dmp
    Filesize

    184KB

  • memory/1884-56-0x0000000000000000-mapping.dmp