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Analysis

  • max time kernel
    131s
  • 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, 16:26

General

  • Target

    xin037.exe

  • Size

    22KB

  • MD5

    3d820ea021ed22996f873b48e2f8df2d

  • SHA1

    373adfa99b3f7bd34e070b547fa370eafe1e93a7

  • SHA256

    db023f3427fb2ada09b749a726743e4f215653cd2d47e548f8d71b0eca47d199

  • SHA512

    89b36567a4dd06b47d890f1ca95c6a4df66e496d8c2f7c506e7f29581e39ea73d9576456e557ccc330385a19f60756091c440e91a0b568831f27f900d140ce2a

  • SSDEEP

    384:U9kcqWBCu84UOY08BgfmB7Fyvupe1eY0JwtMwKFTwNcSWVT:SkLWr84pTYgeBByvJ1eRSMwKF0NczVT

Score
7/10
upx

Malware Config

Signatures

  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 2 IoCs
  • UPX packed file 3 IoCs

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

  • Drops file in System32 directory 3 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\xin037.exe
    "C:\Users\Admin\AppData\Local\Temp\xin037.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:4800
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\clear.bat" "
      2⤵
        PID:2532

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      113B

      MD5

      ef5b57d029351bb12fa3e75bd99ea711

      SHA1

      a9cfa8b49fa8a016abf38edca45b9e369c96158e

      SHA256

      75d0e2bd8d5ce9b015a828802057e009975d444bdcff8d7e8778aa1b68e1e70c

      SHA512

      3353e5a12190824f484c17d316e36d5a00a509de981ca24559bc072f00a38c7981b633f94fdde4b65114a7a6fe88f6ab3f7a04992cf76e2bf089fe6023d96b4d

    • C:\Users\Admin\AppData\Local\Temp\jlfdnf.dll

      Filesize

      15KB

      MD5

      9a54ae64fd84725b3dc852bf6e221def

      SHA1

      a0a4f67abda9a61383e6a1253e455c107fd23b91

      SHA256

      9d1630be06b8ea8eaa4407b09b5a64648fcd7e4cc99c0156ef522917c387b919

      SHA512

      d50f733efd83367f941d3d5eabb161b2184dd9bbda77baf5d83fa0e43b7b84b096d02f617d4e071f76c20f06eb5129b6f7e8af0e4619adf765e393c12119b6bb

    • C:\Windows\SysWOW64\RasEngine.dat

      Filesize

      48KB

      MD5

      98c499fccb739ab23b75c0d8b98e0481

      SHA1

      0ef5c464823550d5f53dd485e91dabc5d5a1ba0a

      SHA256

      d9d8ce1b86b3978889466ab1b9f46778942d276922bf7533327a493083913087

      SHA512

      9e64ac13e18ab0a518bb85b6612520645b5ab2c9a5359ced943813ba7344714999f25ba0e52240ad2d0c2fefc76552ff43173adc46334ff0b5dba171fb58e4e6

    • memory/4800-5-0x0000000010000000-0x0000000010014000-memory.dmp

      Filesize

      80KB

    • memory/4800-15-0x0000000010000000-0x0000000010014000-memory.dmp

      Filesize

      80KB