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Analysis

  • max time kernel
    265s
  • max time network
    320s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    30/12/2023, 07:41

General

  • Target

    1269132bab2e13125eb368531b010039.exe

  • Size

    219KB

  • MD5

    1269132bab2e13125eb368531b010039

  • SHA1

    0bf11c5c4b491589d5a80222ff1c2ba054013cd2

  • SHA256

    bdcee4aff241d86bb674ea37bccf2ee9107b9c77bf75a241caad161af9cb8789

  • SHA512

    82ed70558b97dd36f45288d571f096aa456cca5415268c3a5c5385d808c684ccc38bc4f499811a4617621322c045f71224454e30cb0eeece0c3b3a57d3adf01f

  • SSDEEP

    3072:HusMdsG4h2QnZsPm+FFDmVLNW4R6UwUa0I0S7lIPvCdbCNHkCiPxiU16jwKc:HTMdnEl+hFMBWne1SSP6nCi1

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • UPX packed file 4 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Windows directory 4 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1269132bab2e13125eb368531b010039.exe
    "C:\Users\Admin\AppData\Local\Temp\1269132bab2e13125eb368531b010039.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:476
    • C:\Windows\Bjurea.exe
      C:\Windows\Bjurea.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Modifies Internet Explorer settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of UnmapMainImage
      PID:1484

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\Bjurea.exe

    Filesize

    219KB

    MD5

    1269132bab2e13125eb368531b010039

    SHA1

    0bf11c5c4b491589d5a80222ff1c2ba054013cd2

    SHA256

    bdcee4aff241d86bb674ea37bccf2ee9107b9c77bf75a241caad161af9cb8789

    SHA512

    82ed70558b97dd36f45288d571f096aa456cca5415268c3a5c5385d808c684ccc38bc4f499811a4617621322c045f71224454e30cb0eeece0c3b3a57d3adf01f

  • C:\Windows\Tasks\{35DC3473-A719-4d14-B7C1-FD326CA84A0C}.job

    Filesize

    344B

    MD5

    be1098dceacf89dd42d40d97445c0a90

    SHA1

    dfe2f1fb21def86216273adcf76c3380aba793a3

    SHA256

    d5f9dec0a1971117e0d6a2a6ef19370ee3c3f6015dd4189d324bbbd5384ca03a

    SHA512

    a29a75910948517207ad020f8d0d0edd54777ca7c65d5183c1bc4d6b1544a6541783d4fc10181eaca89ef9a33c28c361472169e986b285e3165e8102174d8864

  • memory/476-31741-0x0000000000400000-0x000000000043D000-memory.dmp

    Filesize

    244KB

  • memory/476-0-0x0000000000400000-0x0000000000473000-memory.dmp

    Filesize

    460KB

  • memory/476-4-0x0000000000400000-0x0000000000473000-memory.dmp

    Filesize

    460KB

  • memory/476-6-0x0000000000250000-0x0000000000251000-memory.dmp

    Filesize

    4KB

  • memory/476-7-0x0000000000400000-0x000000000043D000-memory.dmp

    Filesize

    244KB

  • memory/476-2-0x00000000002E0000-0x0000000000353000-memory.dmp

    Filesize

    460KB

  • memory/476-3-0x00000000002E0000-0x0000000000353000-memory.dmp

    Filesize

    460KB

  • memory/476-1-0x00000000002E0000-0x0000000000353000-memory.dmp

    Filesize

    460KB

  • memory/1484-20-0x0000000000400000-0x000000000043D000-memory.dmp

    Filesize

    244KB

  • memory/1484-22-0x0000000000400000-0x000000000043D000-memory.dmp

    Filesize

    244KB

  • memory/1484-17-0x0000000000400000-0x000000000043D000-memory.dmp

    Filesize

    244KB

  • memory/1484-45136-0x0000000000400000-0x0000000000473000-memory.dmp

    Filesize

    460KB

  • memory/1484-50150-0x0000000000400000-0x000000000043D000-memory.dmp

    Filesize

    244KB

  • memory/1484-55223-0x0000000000400000-0x000000000043D000-memory.dmp

    Filesize

    244KB