Overview

overview

10

Static

static

10

1ecea8b0bc...b2.exe

windows7-x64

9

1ecea8b0bc...b2.exe

windows10-2004-x64

9

Analysis

  • max time kernel
    144s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/04/2024, 09:12

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General

  • Target
    1ecea8b0bc92378bf2bdd1c14ae1628c573569419b91cc34504d2c3f8bb9f8b2.exe
  • Size 194KB
  • Sample240430-k6d88agh23
  • SHA256 1ecea8b0bc92378bf2bdd1c14ae1628c573569419b91cc34504d2c3f8bb9f8b2
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10
ransomwarespywarestealer

Malware Config

Signatures

  • Renames multiple (673) files with added filename extension

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

    ransomware
  • 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.

    spywarestealer
  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in System32 directory 4 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
    ransomware
  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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
  • Modifies Control Panel 2 IoCs
    evasion
  • Modifies registry class 5 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\1ecea8b0bc92378bf2bdd1c14ae1628c573569419b91cc34504d2c3f8bb9f8b2.exe
    "C:\Users\Admin\AppData\Local\Temp\1ecea8b0bc92378bf2bdd1c14ae1628c573569419b91cc34504d2c3f8bb9f8b2.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Sets desktop wallpaper using registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2212
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:1696
    • C:\ProgramData\C4B3.tmp
      "C:\ProgramData\C4B3.tmp"
      2⤵
      • Checks computer location settings
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:3020
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\C4B3.tmp >> NUL
        3⤵
          PID:3816
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
      1⤵
        PID:1468
      • C:\Windows\system32\printfilterpipelinesvc.exe
        C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
        1⤵
        • Drops file in System32 directory
        • Suspicious use of WriteProcessMemory
        PID:3700
        • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
          /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{188FFCF6-608E-48B4-9935-BDC6AE4A22F4}.xps" 133589420020950000
          2⤵
          • Checks processor information in registry
          • Enumerates system info in registry
          • Suspicious use of SetWindowsHookEx
          PID:3100
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3940 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8
        1⤵
          PID:1028

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

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              Downloads

              UUUUUUUUUUU
              • Path C:\$Recycle.Bin\S-1-5-21-3808065738-1666277613-1125846146-1000\UUUUUUUUUUU
              • Size 129B
              • SHA256 143043566d6fb3621a7cce0b7760ac6c982623a5f8c076e80a2da1fba995f614
              • MD5 SHA1 SHA512
              Submit Download

              C4B3.tmp
              • Path C:\ProgramData\C4B3.tmp
              • Size 14KB
              • SHA256 917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
              • MD5 SHA1 SHA512 SSDEEP
              Submit Download

              DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
              • Path C:\Users\Admin\AppData\Local\Temp\DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
              • Size 194KB
              • SHA256 6100467658be0d0373b8e46853750d7ce81de7b004699a81e92d2ff0b5e1fe89
              • MD5 SHA1 SHA512 SSDEEP
              Submit Download

              {87A4EA34-7B29-4E4B-8A83-5D6682455050}
              • Path C:\Users\Admin\AppData\Local\Temp\{87A4EA34-7B29-4E4B-8A83-5D6682455050}
              • Size 4KB
              • SHA256 c8f9c56e46cb4271a6915dbc5d3cb978794d143de263d5e7dc573dd2d0b3924d
              • MD5 SHA1 SHA512 SSDEEP
              Submit Download

              Open Notebook.onetoc2
              • Path C:\Users\Admin\Documents\OneNote Notebooks\My Notebook\Open Notebook.onetoc2
              • Size 4KB
              • SHA256 829b41addc0ed04d18bd0efbae34d23bb966fdf96c7c717bd2a5ccada1e40122
              • MD5 SHA1 SHA512 SSDEEP
              Submit Download

              te8ZzuVLn.README.txt
              • Path C:\te8ZzuVLn.README.txt
              • Size 434B
              • SHA256 6fe668fe8bf69158d1fd08e90f3cff60c1df410bf752635bf152853b6112549c
              • MD5 SHA1 SHA512
              Submit Download

              DDDDDDDDDDD
              • Path F:\$RECYCLE.BIN\S-1-5-21-3808065738-1666277613-1125846146-1000\DDDDDDDDDDD
              • Size 129B
              • SHA256 27366fece0420fd0bd2869822231695b5abde3a51d546c3a25448da2bbf10d6c
              • MD5 SHA1 SHA512
              Submit Download

              memory/2212-2851-0x0000000001030000-0x0000000001040000-memory.dmp
              Download

              memory/2212-2852-0x0000000001030000-0x0000000001040000-memory.dmp
              Download

              memory/2212-1-0x0000000001030000-0x0000000001040000-memory.dmp
              Download

              memory/2212-2853-0x0000000001030000-0x0000000001040000-memory.dmp
              Download

              memory/2212-0-0x0000000001030000-0x0000000001040000-memory.dmp
              Download

              memory/3100-2870-0x00007FFC81410000-0x00007FFC81420000-memory.dmp
              Download

              memory/3100-2873-0x00007FFC81410000-0x00007FFC81420000-memory.dmp
              Download

              memory/3100-2866-0x00007FFC81410000-0x00007FFC81420000-memory.dmp
              Download

              memory/3100-2902-0x00007FFC7F3B0000-0x00007FFC7F3C0000-memory.dmp
              Download

              memory/3100-2903-0x00007FFC7F3B0000-0x00007FFC7F3C0000-memory.dmp
              Download

              memory/3100-2868-0x00007FFC81410000-0x00007FFC81420000-memory.dmp
              Download

              memory/3100-2865-0x00007FFC81410000-0x00007FFC81420000-memory.dmp
              Download