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Analysis

  • max time kernel
    120s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-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.

  • Deletes itself 1 IoCs
  • Loads dropped DLL 2 IoCs
  • UPX packed file 2 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 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\xin037.exe
    "C:\Users\Admin\AppData\Local\Temp\xin037.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:1256
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\clear.bat" "
      2⤵
      • Deletes itself
      PID:2828

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    113B

    MD5

    ef5b57d029351bb12fa3e75bd99ea711

    SHA1

    a9cfa8b49fa8a016abf38edca45b9e369c96158e

    SHA256

    75d0e2bd8d5ce9b015a828802057e009975d444bdcff8d7e8778aa1b68e1e70c

    SHA512

    3353e5a12190824f484c17d316e36d5a00a509de981ca24559bc072f00a38c7981b633f94fdde4b65114a7a6fe88f6ab3f7a04992cf76e2bf089fe6023d96b4d

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

    Filesize

    15KB

    MD5

    9a54ae64fd84725b3dc852bf6e221def

    SHA1

    a0a4f67abda9a61383e6a1253e455c107fd23b91

    SHA256

    9d1630be06b8ea8eaa4407b09b5a64648fcd7e4cc99c0156ef522917c387b919

    SHA512

    d50f733efd83367f941d3d5eabb161b2184dd9bbda77baf5d83fa0e43b7b84b096d02f617d4e071f76c20f06eb5129b6f7e8af0e4619adf765e393c12119b6bb

  • \Windows\SysWOW64\RasEngine.dat

    Filesize

    10KB

    MD5

    e6e13b8d8fc47f5545b57c50ddb6438e

    SHA1

    0d9520c050c6e45ffc0c6dedbf31142a2613737b

    SHA256

    019195d80e0fea1a9b576bc17f50735d858537b3fe93442c005d89cbba45ab63

    SHA512

    60209ede8465ad6f109b25fcd41f796ca1c2c05e542b42a4b9c76ce71c8734ac222873ccfd7711e67906faac25e29507965d7958ab8f2e231a50390551c7c5d1

  • memory/1256-6-0x0000000010000000-0x0000000010014000-memory.dmp

    Filesize

    80KB