Analysis

  • max time kernel
    143s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 12:36

General

  • Target

    c7e2727f98b868dad9cc7de6d9c378d27fd3a29eea6589739d36e7309773241f.exe

  • Size

    320KB

  • MD5

    9d85837c19f17bb41eb39aaa6c608b74

  • SHA1

    e5dfb98dde09cf621cdeb96c491e5f23510ee37a

  • SHA256

    c7e2727f98b868dad9cc7de6d9c378d27fd3a29eea6589739d36e7309773241f

  • SHA512

    43e6f3e48cd0fee2f996a84adc0235a8ac5a9cdc5a969d2a21a9c859b402469d8a72aa5216d122e2c2df7d7c38903ce8177c1fc47a1851183e5c65352829944e

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c7e2727f98b868dad9cc7de6d9c378d27fd3a29eea6589739d36e7309773241f.exe
    "C:\Users\Admin\AppData\Local\Temp\c7e2727f98b868dad9cc7de6d9c378d27fd3a29eea6589739d36e7309773241f.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1308
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\c7e2727f98b868dad9cc7de6d9c378d27fd3a29eea6589739d36e7309773241f.exe" "C:\Users\Admin\AppData\Local\kernelsystmgr.exe"
      2⤵
        PID:1568
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c, "C:\Users\Admin\AppData\Local\kernelsystmgr.exe"
        2⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1468
        • C:\Users\Admin\AppData\Local\kernelsystmgr.exe
          "C:\Users\Admin\AppData\Local\kernelsystmgr.exe"
          3⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:840
          • C:\Users\Admin\AppData\Local\kernelsystmgr.exe
            "C:\Users\Admin\AppData\Local\kernelsystmgr.exe"
            4⤵
              PID:1208

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\kernelsystmgr.exe
        Filesize

        320KB

        MD5

        9d85837c19f17bb41eb39aaa6c608b74

        SHA1

        e5dfb98dde09cf621cdeb96c491e5f23510ee37a

        SHA256

        c7e2727f98b868dad9cc7de6d9c378d27fd3a29eea6589739d36e7309773241f

        SHA512

        43e6f3e48cd0fee2f996a84adc0235a8ac5a9cdc5a969d2a21a9c859b402469d8a72aa5216d122e2c2df7d7c38903ce8177c1fc47a1851183e5c65352829944e

      • C:\Users\Admin\AppData\Local\kernelsystmgr.exe
        Filesize

        320KB

        MD5

        9d85837c19f17bb41eb39aaa6c608b74

        SHA1

        e5dfb98dde09cf621cdeb96c491e5f23510ee37a

        SHA256

        c7e2727f98b868dad9cc7de6d9c378d27fd3a29eea6589739d36e7309773241f

        SHA512

        43e6f3e48cd0fee2f996a84adc0235a8ac5a9cdc5a969d2a21a9c859b402469d8a72aa5216d122e2c2df7d7c38903ce8177c1fc47a1851183e5c65352829944e

      • \Users\Admin\AppData\Local\kernelsystmgr.exe
        Filesize

        320KB

        MD5

        9d85837c19f17bb41eb39aaa6c608b74

        SHA1

        e5dfb98dde09cf621cdeb96c491e5f23510ee37a

        SHA256

        c7e2727f98b868dad9cc7de6d9c378d27fd3a29eea6589739d36e7309773241f

        SHA512

        43e6f3e48cd0fee2f996a84adc0235a8ac5a9cdc5a969d2a21a9c859b402469d8a72aa5216d122e2c2df7d7c38903ce8177c1fc47a1851183e5c65352829944e

      • memory/840-63-0x0000000000DC0000-0x0000000000E16000-memory.dmp
        Filesize

        344KB

      • memory/840-61-0x0000000000000000-mapping.dmp
      • memory/1208-65-0x0000000000400000-0x00000000004A2000-memory.dmp
        Filesize

        648KB

      • memory/1208-66-0x0000000000400000-0x00000000004A2000-memory.dmp
        Filesize

        648KB

      • memory/1208-68-0x0000000000400000-0x00000000004A2000-memory.dmp
        Filesize

        648KB

      • memory/1208-70-0x0000000000400000-0x00000000004A2000-memory.dmp
        Filesize

        648KB

      • memory/1308-56-0x0000000075261000-0x0000000075263000-memory.dmp
        Filesize

        8KB

      • memory/1308-55-0x0000000000570000-0x000000000058A000-memory.dmp
        Filesize

        104KB

      • memory/1308-54-0x0000000000D80000-0x0000000000DD6000-memory.dmp
        Filesize

        344KB

      • memory/1468-58-0x0000000000000000-mapping.dmp
      • memory/1568-57-0x0000000000000000-mapping.dmp