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Analysis

  • max time kernel
    147s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/03/2024, 19:43

General

  • Target

    1aa81f2c899008b1f482206e0a73588f63c16c17c829169ed34ab2553e6232e8.exe

  • Size

    247KB

  • MD5

    6bc8b8ea22ded629343c7cd37d165b69

  • SHA1

    ac644dbe00940622e829eea2c7ff98ddde7f2979

  • SHA256

    1aa81f2c899008b1f482206e0a73588f63c16c17c829169ed34ab2553e6232e8

  • SHA512

    9335907ea8c7b3190adb4368238eb47b05eb279f7dc0195de681d3b33b2758377b7ef657de0d094e75606a49e97129780f6a108c68e586a4b1882c008268cc5b

  • SSDEEP

    3072:YYB4Qlayj4kOLH7yUzOu376z6zODggW9VzzOninjdJpHk:5yQlayj4vLmar6zFVWjzzPRJpHk

Score
10/10

Malware Config

Extracted

Family

urelas

C2

121.88.5.184

Signatures

  • Urelas

    Urelas is a trojan targeting card games.

  • UPX dump on OEP (original entry point) 6 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • UPX packed file 6 IoCs

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

  • 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\1aa81f2c899008b1f482206e0a73588f63c16c17c829169ed34ab2553e6232e8.exe
    "C:\Users\Admin\AppData\Local\Temp\1aa81f2c899008b1f482206e0a73588f63c16c17c829169ed34ab2553e6232e8.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1784
    • C:\Users\Admin\AppData\Local\Temp\shoste.exe
      "C:\Users\Admin\AppData\Local\Temp\shoste.exe"
      2⤵
      • Executes dropped EXE
      PID:4776
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\sanfdr.bat" "
      2⤵
        PID:4992

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\golfinfo.ini

      Filesize

      512B

      MD5

      84755d526a89b1cec68d6091abfbcb6d

      SHA1

      c75a1553266458d5d4d6fb18291ea44563fa130f

      SHA256

      4485e73b8e2dd2346284b33156fcb30f8d6ab41c194933246803f1ab1b62665b

      SHA512

      78666508a3b72e65f9b1ec5736c88e3557023a7469be40e0a4b9e489e3b37fa6f50e87cc70779b66de19338b867e8037d572e965c4cf569dc9ef417d010f0f95

    • C:\Users\Admin\AppData\Local\Temp\sanfdr.bat

      Filesize

      338B

      MD5

      a2f1cfefee13539bee315ce711c269c6

      SHA1

      5a188e55886b54bdd6cc268825d0ee3238b3c57a

      SHA256

      541d4cb101005acc44067724797f497bc8f01efefbd2a389dcad8631cde48e76

      SHA512

      eb8319f51e54bc432b793444a84d0f205cfda26387e45d86e8ef96ffefe8ea21c12d0d8dcda55c63a987d40f5214b28973feb929cf5445fe86cba72cb2b87698

    • C:\Users\Admin\AppData\Local\Temp\shoste.exe

      Filesize

      247KB

      MD5

      abfc2ddc2c9fa763e6af9aa16907e32e

      SHA1

      8162f5cf9e8a4ca7572e6bd497302507641ca94e

      SHA256

      98059e21b4d213d6686c7eeebc82bb2905bbaeba4ab06016a25144856f014667

      SHA512

      55df43192877f0fdf9b984a08c0a70e29132c7e44547048340e0d0bee205dcfb514cab14aa199ff3cb2ee50a6d5f830ee99bd2f3855afe2d83095de7c54ba23a

    • memory/1784-0-0x0000000000400000-0x0000000000445000-memory.dmp

      Filesize

      276KB

    • memory/1784-14-0x0000000000400000-0x0000000000445000-memory.dmp

      Filesize

      276KB

    • memory/4776-12-0x0000000000400000-0x0000000000445000-memory.dmp

      Filesize

      276KB

    • memory/4776-17-0x0000000000400000-0x0000000000445000-memory.dmp

      Filesize

      276KB

    • memory/4776-18-0x0000000000400000-0x0000000000445000-memory.dmp

      Filesize

      276KB