Analysis

  • max time kernel
    360s
  • max time network
    361s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    05-11-2024 11:10

General

  • Target

    cry1.exe

  • Size

    370KB

  • MD5

    a890e2f924dea3cb3e46a95431ffae39

  • SHA1

    35719ee58a5771156bc956bcf1b5c54ac3391593

  • SHA256

    c0cf40b8830d666a24bdd4febdc162e95aa30ed968fa3675e26ad97b2e88e03a

  • SHA512

    664fb8075712912be30185d17d912dae148e778627e852affe1b1080bb9c8d5917e7b3c1d194e62ac6919c16235754f776523ba7ce95af38be86b61cc3e3d162

  • SSDEEP

    6144:KRzMgpY8bXFHW1FbwwEHidUoagoW2C9cuqBGI4Zq6mYN8+G5l9PAzJdVeO2Ui:sDRbXFHW1+K2UWBGIymYG+i9A+ONi

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Deletes itself 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in System32 directory 64 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 Control Panel 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cry1.exe
    "C:\Users\Admin\AppData\Local\Temp\cry1.exe"
    1⤵
    • Drops file in Drivers directory
    • Adds Run key to start application
    • Drops file in System32 directory
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies Control Panel
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1236
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\TGKWX.bat" "
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2720
      • C:\Windows\SysWOW64\chcp.com
        chcp 1251
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2764

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    189B

    MD5

    7ecc1e6ef44282aebd5637877a33455b

    SHA1

    32aedd7889d7a25ced15a84ea67764e6949abfc2

    SHA256

    fec32040bd14256a9ad81601e39cc543f332c5653987ebb86abfeb4d5eeac165

    SHA512

    bc00167011cb049a22fb32230cb108c9dd8b2e5232f52aed2adacb25d97b4836d3b42c53227568f7678ae633c3ab4ca9ac29b5a99f5875e067c75fc74e45559a

  • memory/1236-87-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/1236-1354-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/1236-1659-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/1236-1783-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/1236-1798-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB