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Analysis

  • max time kernel
    146s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/12/2023, 15:16

General

  • Target

    03577bf55d4aefea88aaa1eed68e3a19.exe

  • Size

    181KB

  • MD5

    03577bf55d4aefea88aaa1eed68e3a19

  • SHA1

    b993c81ba18ced9d41fc59ac647bea489b2e15f5

  • SHA256

    48e12867b2a256b2676efd76f7672bb5a3b111a0304157b98c6c86c7d76b2d5e

  • SHA512

    b9997d745b61f8e0e240f6282976bc4897fbcd969be45753d8c9ea0a820f48d75992923d98387f305b2505882e9a58547ff3b18e7d53ca7bd1415f0b1b01f155

  • SSDEEP

    3072:1d9xR3G2BZMbBLBaYw0coLujNHIHaTTg4atGleXOMJrbB60FT+bBNXXl:1d93ZBZMbqYgomHIH3eMxF8BNXXl

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Drops file in System32 directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\03577bf55d4aefea88aaa1eed68e3a19.exe
    "C:\Users\Admin\AppData\Local\Temp\03577bf55d4aefea88aaa1eed68e3a19.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2144
    • C:\Users\Admin\AppData\Local\Temp\WINDOWS\inf.exe
      "C:\Users\Admin\AppData\Local\Temp\WINDOWS\inf.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:1092
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\smgr34.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\smgr34.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:2020

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\WINDOWS\inf.exe

    Filesize

    38KB

    MD5

    4fb080f215e51616ff645f384c6b282a

    SHA1

    f0803140e2782c78e9a738cae956c6cdb0052ecf

    SHA256

    735ffb87b2e0f7f7ce40cf4e322f2c91bdb7f56ed74272f6383b8e3e2e028589

    SHA512

    e823f1012be897148f461e30de945d3ba53572289789f078d7c01a9afc95d59a5d58a47b1600f88f7c9319ea7966e756818f2a5c8a6808f5c734ded21bbf90f5

  • C:\Users\Admin\AppData\Local\Temp\WINDOWS\zlib4.dll

    Filesize

    142KB

    MD5

    59d245b97444b78e5ea16ae10ecc6dfb

    SHA1

    8b0c5e3c294834791577a4bb8ee1c70765ced775

    SHA256

    a4c4846802db2f9511294886f7d98ee518baccff71ad549b0c6de69237419dee

    SHA512

    6eb75c2154b5e2485750d29c1af92a55de8414e2058e78eedc00983062e7161ed56c159cddb49cffa64518624018812f2f3df88fe7e7d6b677f44edcaa3ff340

  • C:\Users\Admin\AppData\Local\Temp\WINDOWS\zlib4.dll

    Filesize

    151KB

    MD5

    5d7a4013f4da7be570ed30c1992563b2

    SHA1

    9ee822d06a31c9a3e7b0d1951a9ce1467e729b1a

    SHA256

    a27d35302b792fa25ca285eca7ca0321a6e1e14531be6cfc77c154e280223c4b

    SHA512

    a5f04ba5b932df8a6bfcc05cd54811726e76a86a4975fc5b85394906a3d57cebe040d76f09262c8c041870b92493af9f207471c0bdd3f9aee8ced205c9be01d5

  • memory/1092-29-0x0000000000570000-0x000000000059B000-memory.dmp

    Filesize

    172KB

  • memory/1092-15-0x0000000000570000-0x000000000059B000-memory.dmp

    Filesize

    172KB

  • memory/1092-28-0x0000000000400000-0x0000000000411000-memory.dmp

    Filesize

    68KB

  • memory/2020-37-0x0000000000490000-0x00000000004BB000-memory.dmp

    Filesize

    172KB

  • memory/2020-26-0x0000000000490000-0x00000000004BB000-memory.dmp

    Filesize

    172KB

  • memory/2020-30-0x0000000000400000-0x0000000000411000-memory.dmp

    Filesize

    68KB

  • memory/2020-31-0x0000000000490000-0x00000000004BB000-memory.dmp

    Filesize

    172KB

  • memory/2020-33-0x0000000000490000-0x00000000004BB000-memory.dmp

    Filesize

    172KB

  • memory/2020-35-0x0000000000490000-0x00000000004BB000-memory.dmp

    Filesize

    172KB

  • memory/2020-43-0x0000000000490000-0x00000000004BB000-memory.dmp

    Filesize

    172KB

  • memory/2020-45-0x0000000000490000-0x00000000004BB000-memory.dmp

    Filesize

    172KB

  • memory/2020-47-0x0000000000490000-0x00000000004BB000-memory.dmp

    Filesize

    172KB

  • memory/2020-51-0x0000000000490000-0x00000000004BB000-memory.dmp

    Filesize

    172KB

  • memory/2144-11-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB