Analysis

  • max time kernel
    119s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-08-2024 12:20

General

  • Target

    f311887894ff39840a5e713b58489d00N.exe

  • Size

    463KB

  • MD5

    f311887894ff39840a5e713b58489d00

  • SHA1

    d1f64b06bdff758b403c57d3977bba2e1a628c8d

  • SHA256

    ec11ac94782a7a6d4b6f6026ee0064b42aa4c7c14d9b6459cd9db396aebcbdc2

  • SHA512

    33430508c86c6c160bf1fa4d7ada993c5610064fc1db78a4abfd6ef3cdcea7d69f7e5f403c1b97efc321ef06992d0c807a95624b418d13be80a090196b66613c

  • SSDEEP

    12288:Grlc87eqqV5e+wBV6O+1QlgMaAbhNXD4G4gvqSWri28:GrSqqHeVBxNGMaAbhNzp4gvqSQ

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in System32 directory 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of UnmapMainImage
    PID:3404
    • C:\Users\Admin\AppData\Local\Temp\f311887894ff39840a5e713b58489d00N.exe
      "C:\Users\Admin\AppData\Local\Temp\f311887894ff39840a5e713b58489d00N.exe"
      2⤵
      • Adds Run key to start application
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3652
      • C:\Users\Admin\AppData\Roaming\iexpHost\efsull32.exe
        "C:\Users\Admin\AppData\Roaming\iexpHost"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1712
        • C:\Users\Admin\AppData\Local\Temp\~6726.tmp
          3404 474632 1712 1
          4⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:2004
  • C:\Windows\SysWOW64\autotall.exe
    C:\Windows\SysWOW64\autotall.exe -s
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1076

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\~6726.tmp

    Filesize

    8KB

    MD5

    86dc243576cf5c7445451af37631eea9

    SHA1

    99a81c47c4c02f32c0ab456bfa23c306c7a09bf9

    SHA256

    25d2a671e1b5b5b95697ac0234ce4d46e0d0894919521b54aabebd9daecf994a

    SHA512

    c7310524f9b65f811146c1eb6ae944966351ac88a95fbc1ac422d8810730e5e212a7e28090ad758ea23c96ba38073e7fcf42460575e7f09dbc759a45c5d5a4a4

  • C:\Users\Admin\AppData\Roaming\iexpHost\efsull32.exe

    Filesize

    463KB

    MD5

    252a0ac3b4b045ca773c6534886cad9e

    SHA1

    257ae51aa8dafbd996e8390cdfb0bee3fb5e7765

    SHA256

    672595c983a7d2ace079e8d4510d9d5e8911f2509f8b8a7e9dda3132ecd17f27

    SHA512

    b239d024e2027b908306dde0bac09a0828054cd8932f56ca59b35cee466312b13abde2e976e2b66541e7cf8d5fcbf554a9c601384d59170846f72008ab3f3063

  • memory/1076-15-0x0000000000480000-0x00000000004FC000-memory.dmp

    Filesize

    496KB

  • memory/1076-14-0x0000000000400000-0x0000000000479000-memory.dmp

    Filesize

    484KB

  • memory/1712-29-0x0000000000400000-0x0000000000479000-memory.dmp

    Filesize

    484KB

  • memory/1712-6-0x0000000000400000-0x0000000000479000-memory.dmp

    Filesize

    484KB

  • memory/1712-13-0x00000000004E0000-0x00000000004E5000-memory.dmp

    Filesize

    20KB

  • memory/1712-12-0x00000000006C0000-0x000000000073C000-memory.dmp

    Filesize

    496KB

  • memory/3404-27-0x0000000008390000-0x000000000839D000-memory.dmp

    Filesize

    52KB

  • memory/3404-26-0x0000000008380000-0x0000000008386000-memory.dmp

    Filesize

    24KB

  • memory/3404-25-0x0000000008430000-0x00000000084B3000-memory.dmp

    Filesize

    524KB

  • memory/3404-18-0x0000000008430000-0x00000000084B3000-memory.dmp

    Filesize

    524KB

  • memory/3652-0-0x0000000000400000-0x0000000000479000-memory.dmp

    Filesize

    484KB

  • memory/3652-28-0x0000000000400000-0x0000000000479000-memory.dmp

    Filesize

    484KB

  • memory/3652-1-0x0000000000590000-0x000000000060C000-memory.dmp

    Filesize

    496KB