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Analysis

  • max time kernel
    143s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/07/2023, 12:49

General

  • Target

    8421b07fef4b5f_JC.exe

  • Size

    467KB

  • MD5

    8421b07fef4b5fd01ee94ab88da0066b

  • SHA1

    5de92151ebec2e0608e9e5d022f5da7c38e34b53

  • SHA256

    20402a7587544d4b4d76afbe3fecf82239eed5b9b3dc69885c748f785ba55708

  • SHA512

    385073a21b5d66fc1c0d8df0e1c8d35248e3d32d0c1ab659a46a861caf39eb0ad232f5f74c896229754178ac4a271773bb80f4bf01bf401ce2677584d8161fa9

  • SSDEEP

    6144:jFrJxvldL4c5ONK1xgWbd1s79+iStwTgUq+uUCN5Tb/lEh7cJJqBhGrirbO4Dyb9:Bb4bZudi79Lf/65Tb/QLGrObb/zsn1Ak

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Drops file in System32 directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 6 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 5 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\8421b07fef4b5f_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\8421b07fef4b5f_JC.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4840
    • C:\Users\Admin\AppData\Local\Temp\67A3.tmp
      "C:\Users\Admin\AppData\Local\Temp\67A3.tmp" --helpC:\Users\Admin\AppData\Local\Temp\8421b07fef4b5f_JC.exe CEC31A260443769E9E00B2FA5409E2BA673C95D9FBE7736FCDDE2C556345176099BA8D5A2746C8E98FE2ACC3A5BC07F00F87977056B075EB71B3EF1DCA6B2A66
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies registry class
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:4056
      • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
        "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\8421b07fef4b5f_JC.doc" /o ""
        3⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious use of SetWindowsHookEx
        PID:3936
  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k netsvcs -p
    1⤵
    • Drops file in System32 directory
    • Checks processor information in registry
    • Enumerates system info in registry
    PID:2684

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\67A3.tmp

    Filesize

    467KB

    MD5

    208687152a630b8713f7c2907531df23

    SHA1

    989ed4c652bfbc66e08506eb4c133233a3361fa9

    SHA256

    189660852e40374627f5d256f14c95f9c6fe33588f35ba99ae6748cb1607045e

    SHA512

    3b6cc342c3a72951cf9771e4c0d229c05b8ec447c3a59755b2f115c17acdaff97e1b454c1e7b3b0ceb75f2d67e875f9bfa5f5b43b4fe16e60bb234153955907b

  • C:\Users\Admin\AppData\Local\Temp\67A3.tmp

    Filesize

    467KB

    MD5

    208687152a630b8713f7c2907531df23

    SHA1

    989ed4c652bfbc66e08506eb4c133233a3361fa9

    SHA256

    189660852e40374627f5d256f14c95f9c6fe33588f35ba99ae6748cb1607045e

    SHA512

    3b6cc342c3a72951cf9771e4c0d229c05b8ec447c3a59755b2f115c17acdaff97e1b454c1e7b3b0ceb75f2d67e875f9bfa5f5b43b4fe16e60bb234153955907b

  • C:\Users\Admin\AppData\Local\Temp\8421b07fef4b5f_JC.doc

    Filesize

    35KB

    MD5

    a6b03fc9e5439b7504ba08010a960962

    SHA1

    e93a74f35ac1ed020158642eb1f2087fd31fc7c6

    SHA256

    b3b306a9618a08a003443e00e8ce2fcb14040775c3aeadc11cf120668e98dff1

    SHA512

    decbe4fa7eec0833a27acbde8b4de099124aa42e551f710fb615e6fc5aa0056ce9e44fc282e4930b1a669a1e012700b2c79cebc8a7b8ee4c66cfc29c800cddd0

  • C:\Users\Admin\AppData\Local\Temp\8421b07fef4b5f_JC.doc

    Filesize

    35KB

    MD5

    a6b03fc9e5439b7504ba08010a960962

    SHA1

    e93a74f35ac1ed020158642eb1f2087fd31fc7c6

    SHA256

    b3b306a9618a08a003443e00e8ce2fcb14040775c3aeadc11cf120668e98dff1

    SHA512

    decbe4fa7eec0833a27acbde8b4de099124aa42e551f710fb615e6fc5aa0056ce9e44fc282e4930b1a669a1e012700b2c79cebc8a7b8ee4c66cfc29c800cddd0

  • C:\Users\Admin\AppData\Roaming\Microsoft\UProof\ExcludeDictionaryEN0409.lex

    Filesize

    2B

    MD5

    f3b25701fe362ec84616a93a45ce9998

    SHA1

    d62636d8caec13f04e28442a0a6fa1afeb024bbb

    SHA256

    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

    SHA512

    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

  • memory/3936-149-0x00007FF8BE0D0000-0x00007FF8BE0E0000-memory.dmp

    Filesize

    64KB

  • memory/3936-162-0x00007FF8BBED0000-0x00007FF8BBEE0000-memory.dmp

    Filesize

    64KB

  • memory/3936-151-0x00007FF8BE0D0000-0x00007FF8BE0E0000-memory.dmp

    Filesize

    64KB

  • memory/3936-153-0x00007FF8BE0D0000-0x00007FF8BE0E0000-memory.dmp

    Filesize

    64KB

  • memory/3936-152-0x00007FF8FE050000-0x00007FF8FE245000-memory.dmp

    Filesize

    2.0MB

  • memory/3936-154-0x00007FF8FE050000-0x00007FF8FE245000-memory.dmp

    Filesize

    2.0MB

  • memory/3936-155-0x00007FF8FE050000-0x00007FF8FE245000-memory.dmp

    Filesize

    2.0MB

  • memory/3936-156-0x00007FF8BE0D0000-0x00007FF8BE0E0000-memory.dmp

    Filesize

    64KB

  • memory/3936-157-0x00007FF8FE050000-0x00007FF8FE245000-memory.dmp

    Filesize

    2.0MB

  • memory/3936-158-0x00007FF8FE050000-0x00007FF8FE245000-memory.dmp

    Filesize

    2.0MB

  • memory/3936-160-0x00007FF8FE050000-0x00007FF8FE245000-memory.dmp

    Filesize

    2.0MB

  • memory/3936-159-0x00007FF8FE050000-0x00007FF8FE245000-memory.dmp

    Filesize

    2.0MB

  • memory/3936-161-0x00007FF8FE050000-0x00007FF8FE245000-memory.dmp

    Filesize

    2.0MB

  • memory/3936-150-0x00007FF8FE050000-0x00007FF8FE245000-memory.dmp

    Filesize

    2.0MB

  • memory/3936-163-0x00007FF8BBED0000-0x00007FF8BBEE0000-memory.dmp

    Filesize

    64KB

  • memory/3936-165-0x00007FF8FE050000-0x00007FF8FE245000-memory.dmp

    Filesize

    2.0MB

  • memory/3936-148-0x00007FF8FE050000-0x00007FF8FE245000-memory.dmp

    Filesize

    2.0MB

  • memory/3936-171-0x00007FF8FE050000-0x00007FF8FE245000-memory.dmp

    Filesize

    2.0MB

  • memory/3936-176-0x00007FF8FE050000-0x00007FF8FE245000-memory.dmp

    Filesize

    2.0MB

  • memory/3936-147-0x00007FF8BE0D0000-0x00007FF8BE0E0000-memory.dmp

    Filesize

    64KB

  • memory/3936-207-0x00007FF8BE0D0000-0x00007FF8BE0E0000-memory.dmp

    Filesize

    64KB

  • memory/3936-208-0x00007FF8BE0D0000-0x00007FF8BE0E0000-memory.dmp

    Filesize

    64KB

  • memory/3936-209-0x00007FF8BE0D0000-0x00007FF8BE0E0000-memory.dmp

    Filesize

    64KB

  • memory/3936-210-0x00007FF8BE0D0000-0x00007FF8BE0E0000-memory.dmp

    Filesize

    64KB

  • memory/3936-211-0x00007FF8FE050000-0x00007FF8FE245000-memory.dmp

    Filesize

    2.0MB