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Analysis

  • max time kernel
    149s
  • max time network
    139s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    16/08/2024, 00:23

General

  • Target

    315d043b99f988ce9d9f69d7225292eb44623a97c1a029933b62ede699fa9f13.exe

  • Size

    146KB

  • MD5

    6edfb62405f50d7fb16882ca9b16ed36

  • SHA1

    73c346267e9527ca5886bf8a90b77f9ebceb58fe

  • SHA256

    315d043b99f988ce9d9f69d7225292eb44623a97c1a029933b62ede699fa9f13

  • SHA512

    b3ea04a001c846af5d93435db055986a448fc5d01e86a9292937ce085609b653d41719111d2d031c8b6694eb01d5856e86f9e1a65e8cdc43af51a8ed3d370d2f

  • SSDEEP

    3072:PqJogYkcSNm9V7DGoNK696RTpfnEsCygHQlyT:Pq2kc4m9tDHNK6UlJ9CyN

Malware Config

Signatures

  • Renames multiple (544) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Drops desktop.ini file(s) 2 IoCs
  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

  • Drops file in System32 directory 4 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: RenamesItself 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 13 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\315d043b99f988ce9d9f69d7225292eb44623a97c1a029933b62ede699fa9f13.exe
    "C:\Users\Admin\AppData\Local\Temp\315d043b99f988ce9d9f69d7225292eb44623a97c1a029933b62ede699fa9f13.exe"
    1⤵
    • Drops desktop.ini file(s)
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:240
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:4460
    • C:\ProgramData\C6EB.tmp
      "C:\ProgramData\C6EB.tmp"
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:3208
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\C6EB.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2116
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
    1⤵
      PID:5016
    • C:\Windows\system32\printfilterpipelinesvc.exe
      C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
      1⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:420
      • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
        /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{0EA21079-98E9-4CD6-A556-A1001D3F1428}.xps" 133682414398300000
        2⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of SetWindowsHookEx
        PID:3268

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\$Recycle.Bin\S-1-5-21-2227988167-2813779459-4240799794-1000\AAAAAAAAAAA

      Filesize

      129B

      MD5

      379633bed00e108463e208bcd449cf04

      SHA1

      601ef4675c9baaf68820f18e3460158589aaee92

      SHA256

      89535cb8fa8d3ee81af98973e68234bb456ff9ea2126cbc2fd1206ed9bd2e6dd

      SHA512

      c0d6a166edb706e09c443b6a27a2fcedb0ad5238b2ce94ca321e86706fca48e24c29a95ccba39f7fc74989e0a82574afe93478be992175aee186895ee2e189bf

    • C:\ProgramData\C6EB.tmp

      Filesize

      14KB

      MD5

      294e9f64cb1642dd89229fff0592856b

      SHA1

      97b148c27f3da29ba7b18d6aee8a0db9102f47c9

      SHA256

      917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

      SHA512

      b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

    • C:\Users\Admin\AppData\Local\Temp\DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD

      Filesize

      146KB

      MD5

      17e9eaeec6dab47c21bb6c92ef08515b

      SHA1

      0df84a54e57239de6fb87d38b02b14e4d8f339ca

      SHA256

      5c6d9c4c480618019a9cb4a480fc2157a512e7459228092eaaa79de8f2f33c4a

      SHA512

      70c1488ee59543763139724eb350bdf7b923b8159edc00abd67f534ab7fbe11fd92a9853180e5a7a7cdd988e59840b5965935cdf70b67bf5d7c1e74434a2f01c

    • C:\Users\Admin\AppData\Local\Temp\{90396B72-F81B-4876-9ED1-D0C529B1265D}

      Filesize

      4KB

      MD5

      41f2aa688fc3d5062eb5dfa7b0e6e9a0

      SHA1

      f711006d02e6ca0605fd13a2f6fb2f57bfca97c8

      SHA256

      deff2b572357fd952a39cbf66e3190bf9b1ef711dd51f93167768e81ece1b4fa

      SHA512

      763428185d41f980ce3ff8b85f2d7c6861bd170e1e10252211fae0368aa075f03df971ac4e5a0e300f26e264644b39cdf68fccc226454ba558fa008b2489bf51

    • C:\Users\Admin\Documents\OneNote Notebooks\My Notebook\Open Notebook.onetoc2

      Filesize

      4KB

      MD5

      a188c45320463880f5e9fcd7372e5f16

      SHA1

      bd1415eaf2c19314a5f51c9f2db94625a72969a0

      SHA256

      b952fb5e9b055c909094188bc525e9b8af08a9fd139ba7ed1257e225c4e75de9

      SHA512

      b89f6a2a9a14e37a04ec3b692330542a8dad4bc94fd64fd0f05c4dcdf1ccb1e2312632c9607ab9db68520326f71e4cd4239f71ae8492eed25483c233bf79b31a

    • C:\raMFGAusF.README.txt

      Filesize

      597B

      MD5

      8b868d53629149c6b3a461ff64ce8cef

      SHA1

      b8a0b57cfe78c6d8468bdd5ef52411765a456e41

      SHA256

      5f8d2cdb81cac5d0b7df3bae0634042b305b4ac7ad06c728b21df0ea9628da25

      SHA512

      2fbb224b435621bc8947caf5aa4e294725f7df1c79dfaae1674086c8e92fcdb106d734680ac58e02b112613c778b582b2eaa8e6979dc1d75dc1dccab54f7c337

    • F:\$RECYCLE.BIN\S-1-5-21-2227988167-2813779459-4240799794-1000\DDDDDDDDDDD

      Filesize

      129B

      MD5

      637a5ce2852286960b0b1498234acd20

      SHA1

      093e0122e92dada579d0fae82a3fe198718ba12c

      SHA256

      17550395b284a148903d1c84bbd7bc99fcf1317f6b2bed3cb5c6f1fc58ab5531

      SHA512

      b396313828ea36e73a0c6078566fc341fd7d0161faf420867f861efa9385c3588e7473857ba70fdd9e4ac178d18c7f1f3851bb5c7f3cb204ac871ad0dbdcdefa

    • memory/240-2793-0x00000000009E0000-0x00000000009F0000-memory.dmp

      Filesize

      64KB

    • memory/240-2794-0x00000000009E0000-0x00000000009F0000-memory.dmp

      Filesize

      64KB

    • memory/240-2792-0x00000000009E0000-0x00000000009F0000-memory.dmp

      Filesize

      64KB

    • memory/240-1-0x00000000009E0000-0x00000000009F0000-memory.dmp

      Filesize

      64KB

    • memory/240-0-0x00000000009E0000-0x00000000009F0000-memory.dmp

      Filesize

      64KB

    • memory/240-2-0x00000000009E0000-0x00000000009F0000-memory.dmp

      Filesize

      64KB

    • memory/3268-2812-0x00007FFA81530000-0x00007FFA81540000-memory.dmp

      Filesize

      64KB

    • memory/3268-2813-0x00007FFA81530000-0x00007FFA81540000-memory.dmp

      Filesize

      64KB

    • memory/3268-2811-0x00007FFA81530000-0x00007FFA81540000-memory.dmp

      Filesize

      64KB

    • memory/3268-2842-0x00007FFA7F040000-0x00007FFA7F050000-memory.dmp

      Filesize

      64KB

    • memory/3268-2843-0x00007FFA7F040000-0x00007FFA7F050000-memory.dmp

      Filesize

      64KB

    • memory/3268-2810-0x00007FFA81530000-0x00007FFA81540000-memory.dmp

      Filesize

      64KB

    • memory/3268-2809-0x00007FFA81530000-0x00007FFA81540000-memory.dmp

      Filesize

      64KB