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Analysis

  • max time kernel
    146s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/08/2024, 03:08

General

  • Target

    315d043b99f988ce9d9f69d7225292eb44623a97c1a029933b62ede699fa9f13.exe

  • Size

    146KB

  • MD5

    6edfb62405f50d7fb16882ca9b16ed36

  • SHA1

    73c346267e9527ca5886bf8a90b77f9ebceb58fe

  • SHA256

    315d043b99f988ce9d9f69d7225292eb44623a97c1a029933b62ede699fa9f13

  • SHA512

    b3ea04a001c846af5d93435db055986a448fc5d01e86a9292937ce085609b653d41719111d2d031c8b6694eb01d5856e86f9e1a65e8cdc43af51a8ed3d370d2f

  • SSDEEP

    3072:PqJogYkcSNm9V7DGoNK696RTpfnEsCygHQlyT:Pq2kc4m9tDHNK6UlJ9CyN

Malware Config

Signatures

  • Renames multiple (651) files with added filename extension

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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:4464
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:4648
    • C:\ProgramData\F628.tmp
      "C:\ProgramData\F628.tmp"
      2⤵
      • Checks computer location settings
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:4216
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\F628.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4668
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
    1⤵
      PID:516
    • C:\Windows\system32\printfilterpipelinesvc.exe
      C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
      1⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:1972
      • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
        /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{3311EBCD-77E3-4189-81D2-9237ADF903AB}.xps" 133684241213160000
        2⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of SetWindowsHookEx
        PID:3840

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\$Recycle.Bin\S-1-5-21-2392887640-1187051047-2909758433-1000\IIIIIIIIIII

      Filesize

      129B

      MD5

      4f826818838e23e6c7f0815aef577ae5

      SHA1

      1b753f3de0d0e036cd2eb42f3d3fe35c0ce54c4c

      SHA256

      5ef7f97e22abbbd81493eb32a462f025ffb5dce83a00069684a720b67a00743e

      SHA512

      7f6e6b00663196f5a2e2f0947424f5ac128ef3b53b1a7c3a4d0d9baefa4058198a05cc9524875d0edb93906b972e48bdffe2a4a53bd9fc64376d2be94df0634e

    • C:\ProgramData\F628.tmp

      Filesize

      14KB

      MD5

      294e9f64cb1642dd89229fff0592856b

      SHA1

      97b148c27f3da29ba7b18d6aee8a0db9102f47c9

      SHA256

      917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

      SHA512

      b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

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

      Filesize

      146KB

      MD5

      05b2c07fb0151b5d2dfa00c9beb8a81c

      SHA1

      0956eb939651e32ffbf51ed60eeb175387c01aa5

      SHA256

      dc55d3395eaebd7b0a823639ee2d282bb8848f81aef40422b4bfb90e09413b71

      SHA512

      6a13e1d251ff562c9c0b39dd9551e3745413bf445b868bb881dda38f2b01dc2aa404ad2c6061138434646e2b0c8d471c6d02d0b423cc7a39700d2e9404cb164d

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

      Filesize

      4KB

      MD5

      9b19485dcf3cbf43dc4c611e00962d52

      SHA1

      13ced96c9a746f19c98e608a657c618e0a3dc676

      SHA256

      3a4fffc51e1a2cf1a2a5d61f593d20d634360a7c3d51df2d6a93fa551fe95694

      SHA512

      80d3bf3d6cee55060bf913a86e83c1bb634d07c6bd9b4b9d41637a1609496f47bc9379ee95907778d697125cdc518ab82877ae051936c24cf98fc835505b407d

    • C:\raMFGAusF.README.txt

      Filesize

      597B

      MD5

      8b868d53629149c6b3a461ff64ce8cef

      SHA1

      b8a0b57cfe78c6d8468bdd5ef52411765a456e41

      SHA256

      5f8d2cdb81cac5d0b7df3bae0634042b305b4ac7ad06c728b21df0ea9628da25

      SHA512

      2fbb224b435621bc8947caf5aa4e294725f7df1c79dfaae1674086c8e92fcdb106d734680ac58e02b112613c778b582b2eaa8e6979dc1d75dc1dccab54f7c337

    • F:\$RECYCLE.BIN\S-1-5-21-2392887640-1187051047-2909758433-1000\DDDDDDDDDDD

      Filesize

      129B

      MD5

      376a5b9c8f55d7327c583429cfb1292c

      SHA1

      2fae19f69b0a6a2c43c31c0e419907b64510d3cd

      SHA256

      90f6599a35a2a269c52c63b82cc1d68d59fa753587a04bf4c58729d8c40ffb35

      SHA512

      d955c642acbc58c6186672ccf2730b1347b07edbac8f0b45e8c55614a583ba605aca37e99b83d5dfe0c8da5718de849bf6f67e8eccefb7b565478d13bcb4ddaa

    • memory/3840-2894-0x00007FFC21D50000-0x00007FFC21D60000-memory.dmp

      Filesize

      64KB

    • memory/3840-2889-0x00007FFC21D50000-0x00007FFC21D60000-memory.dmp

      Filesize

      64KB

    • memory/3840-2893-0x00007FFC21D50000-0x00007FFC21D60000-memory.dmp

      Filesize

      64KB

    • memory/3840-2897-0x00007FFC21D50000-0x00007FFC21D60000-memory.dmp

      Filesize

      64KB

    • memory/3840-2892-0x00007FFC21D50000-0x00007FFC21D60000-memory.dmp

      Filesize

      64KB

    • memory/3840-2921-0x00007FFC1F7C0000-0x00007FFC1F7D0000-memory.dmp

      Filesize

      64KB

    • memory/3840-2922-0x00007FFC1F7C0000-0x00007FFC1F7D0000-memory.dmp

      Filesize

      64KB

    • memory/4464-2872-0x0000000002C80000-0x0000000002C90000-memory.dmp

      Filesize

      64KB

    • memory/4464-2871-0x0000000002C80000-0x0000000002C90000-memory.dmp

      Filesize

      64KB

    • memory/4464-2873-0x0000000002C80000-0x0000000002C90000-memory.dmp

      Filesize

      64KB

    • memory/4464-0-0x0000000002C80000-0x0000000002C90000-memory.dmp

      Filesize

      64KB

    • memory/4464-1-0x0000000002C80000-0x0000000002C90000-memory.dmp

      Filesize

      64KB

    • memory/4464-2-0x0000000002C80000-0x0000000002C90000-memory.dmp

      Filesize

      64KB