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Analysis

  • max time kernel
    152s
  • max time network
    201s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    04/12/2022, 08:49

General

  • Target

    a85040e7ecb3f06082b5292804267433e611040c89d835a8ffd3151b148ed687.exe

  • Size

    73KB

  • MD5

    ab115f0a6d01203b54f3d4b1a327b587

  • SHA1

    bbb4761896d6f206f085ed5f0481b8e68f8e80d6

  • SHA256

    a85040e7ecb3f06082b5292804267433e611040c89d835a8ffd3151b148ed687

  • SHA512

    c047ca3e2c725df30284d8fbc06f88dd99588ae6c2c25f656060c21ecb055396018447aad65349e2261d9c9ff1b5e39caeb013665e8210d975abf4e95fba28da

  • SSDEEP

    1536:bNCJMvSU05Ct8NwAJH7Bs3UHRazKxiH0vrb+cd8nouy8Z:bNiUQCt5Ia3SYPUvriGcoutZ

Malware Config

Signatures

  • Modifies firewall policy service 2 TTPs 14 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • UAC bypass 3 TTPs 3 IoCs
  • Windows security bypass 2 TTPs 4 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Sets file execution options in registry 2 TTPs 64 IoCs
  • UPX packed file 14 IoCs

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

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Windows security modification 2 TTPs 15 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Control Panel 2 IoCs
  • Modifies Internet Explorer settings 1 TTPs 64 IoCs
  • Modifies Internet Explorer start page 1 TTPs 2 IoCs
  • Modifies registry class 24 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • System policy modification 1 TTPs 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a85040e7ecb3f06082b5292804267433e611040c89d835a8ffd3151b148ed687.exe
    "C:\Users\Admin\AppData\Local\Temp\a85040e7ecb3f06082b5292804267433e611040c89d835a8ffd3151b148ed687.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1776
    • C:\Users\Admin\E696D64614\winlogon.exe
      "C:\Users\Admin\E696D64614\winlogon.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1364
      • C:\Users\Admin\E696D64614\winlogon.exe
        "C:\Users\Admin\E696D64614\winlogon.exe"
        3⤵
        • Modifies firewall policy service
        • Modifies security service
        • Modifies visibility of file extensions in Explorer
        • Modifies visiblity of hidden/system files in Explorer
        • UAC bypass
        • Windows security bypass
        • Disables RegEdit via registry modification
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Sets file execution options in registry
        • Windows security modification
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Modifies Control Panel
        • Modifies Internet Explorer settings
        • Modifies Internet Explorer start page
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • System policy modification
        PID:1548
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1968
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1968 CREDAT:275457 /prefetch:2
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of SetWindowsHookEx
      PID:876

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\E696D64614\winlogon.exe

    Filesize

    73KB

    MD5

    ab115f0a6d01203b54f3d4b1a327b587

    SHA1

    bbb4761896d6f206f085ed5f0481b8e68f8e80d6

    SHA256

    a85040e7ecb3f06082b5292804267433e611040c89d835a8ffd3151b148ed687

    SHA512

    c047ca3e2c725df30284d8fbc06f88dd99588ae6c2c25f656060c21ecb055396018447aad65349e2261d9c9ff1b5e39caeb013665e8210d975abf4e95fba28da

  • C:\Users\Admin\E696D64614\winlogon.exe

    Filesize

    73KB

    MD5

    ab115f0a6d01203b54f3d4b1a327b587

    SHA1

    bbb4761896d6f206f085ed5f0481b8e68f8e80d6

    SHA256

    a85040e7ecb3f06082b5292804267433e611040c89d835a8ffd3151b148ed687

    SHA512

    c047ca3e2c725df30284d8fbc06f88dd99588ae6c2c25f656060c21ecb055396018447aad65349e2261d9c9ff1b5e39caeb013665e8210d975abf4e95fba28da

  • C:\Users\Admin\E696D64614\winlogon.exe

    Filesize

    73KB

    MD5

    ab115f0a6d01203b54f3d4b1a327b587

    SHA1

    bbb4761896d6f206f085ed5f0481b8e68f8e80d6

    SHA256

    a85040e7ecb3f06082b5292804267433e611040c89d835a8ffd3151b148ed687

    SHA512

    c047ca3e2c725df30284d8fbc06f88dd99588ae6c2c25f656060c21ecb055396018447aad65349e2261d9c9ff1b5e39caeb013665e8210d975abf4e95fba28da

  • \Users\Admin\E696D64614\winlogon.exe

    Filesize

    73KB

    MD5

    ab115f0a6d01203b54f3d4b1a327b587

    SHA1

    bbb4761896d6f206f085ed5f0481b8e68f8e80d6

    SHA256

    a85040e7ecb3f06082b5292804267433e611040c89d835a8ffd3151b148ed687

    SHA512

    c047ca3e2c725df30284d8fbc06f88dd99588ae6c2c25f656060c21ecb055396018447aad65349e2261d9c9ff1b5e39caeb013665e8210d975abf4e95fba28da

  • \Users\Admin\E696D64614\winlogon.exe

    Filesize

    73KB

    MD5

    ab115f0a6d01203b54f3d4b1a327b587

    SHA1

    bbb4761896d6f206f085ed5f0481b8e68f8e80d6

    SHA256

    a85040e7ecb3f06082b5292804267433e611040c89d835a8ffd3151b148ed687

    SHA512

    c047ca3e2c725df30284d8fbc06f88dd99588ae6c2c25f656060c21ecb055396018447aad65349e2261d9c9ff1b5e39caeb013665e8210d975abf4e95fba28da

  • memory/1364-66-0x0000000000400000-0x000000000044B000-memory.dmp

    Filesize

    300KB

  • memory/1364-65-0x0000000000400000-0x000000000044B000-memory.dmp

    Filesize

    300KB

  • memory/1548-69-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1548-73-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1548-74-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1548-78-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1548-79-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1776-62-0x0000000000400000-0x000000000044B000-memory.dmp

    Filesize

    300KB

  • memory/1776-56-0x0000000000400000-0x000000000044B000-memory.dmp

    Filesize

    300KB

  • memory/1776-57-0x0000000074C91000-0x0000000074C93000-memory.dmp

    Filesize

    8KB