Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    29/11/2022, 16:37

General

  • Target

    704ed81fef1e76466aefc2345793d7ee7123411c5b51b702a9e5ffb582595c6a.exe

  • Size

    320KB

  • MD5

    e3ac19cdbcc42b240148d8b91594244a

  • SHA1

    1249ee516c74cc71771e27ac1e3f02d722fb1112

  • SHA256

    704ed81fef1e76466aefc2345793d7ee7123411c5b51b702a9e5ffb582595c6a

  • SHA512

    b2cf2461fb8b323aefdfec609888277d8a92a75837abf641ed4f7725d5e09157bc6ec24268d202753a9949176b7720bbf53630a10a06f33cc2aac56380497da2

  • SSDEEP

    6144:rTwEo1IV3puaibGKFHi0mofhaH05kipz016580bHFMdkhq86JQPDHDdx/QtqR:fCgvmzFHi0mo5aH0qMzd5807F7qPJQPx

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 3 IoCs
  • UAC bypass 3 TTPs 10 IoCs
  • Adds policy Run key to start application 2 TTPs 15 IoCs
  • Disables RegEdit via registry modification 6 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Adds Run key to start application 2 TTPs 64 IoCs
  • Checks whether UAC is enabled 1 TTPs 6 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • System policy modification 1 TTPs 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\704ed81fef1e76466aefc2345793d7ee7123411c5b51b702a9e5ffb582595c6a.exe
    "C:\Users\Admin\AppData\Local\Temp\704ed81fef1e76466aefc2345793d7ee7123411c5b51b702a9e5ffb582595c6a.exe"
    1⤵
    • Modifies WinLogon for persistence
    • UAC bypass
    • Adds policy Run key to start application
    • Disables RegEdit via registry modification
    • Loads dropped DLL
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:1076
    • C:\Users\Admin\AppData\Local\Temp\mmagnl.exe
      "C:\Users\Admin\AppData\Local\Temp\mmagnl.exe" "-"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • System policy modification
      PID:1600
    • C:\Users\Admin\AppData\Local\Temp\mmagnl.exe
      "C:\Users\Admin\AppData\Local\Temp\mmagnl.exe" "-"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • System policy modification
      PID:1652

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\mmagnl.exe

          Filesize

          700KB

          MD5

          f253630b336f3c9888be661d3e52cc9c

          SHA1

          437c1a8e57b64245198cbfc4f114fa05b0664763

          SHA256

          c4e7db6f280533ca37161c6984b2cbeaeffcf15fff301cc70ddfd30e869dff4c

          SHA512

          5885e0117f6cc40ab362aa2121b91c9558106f6a419a4c15623a5aec134ff1b3f127d26b154ea985e7e34be9585401782c548c44bbec3f5fac0f505b2ddeaf79

        • C:\Users\Admin\AppData\Local\Temp\mmagnl.exe

          Filesize

          700KB

          MD5

          f253630b336f3c9888be661d3e52cc9c

          SHA1

          437c1a8e57b64245198cbfc4f114fa05b0664763

          SHA256

          c4e7db6f280533ca37161c6984b2cbeaeffcf15fff301cc70ddfd30e869dff4c

          SHA512

          5885e0117f6cc40ab362aa2121b91c9558106f6a419a4c15623a5aec134ff1b3f127d26b154ea985e7e34be9585401782c548c44bbec3f5fac0f505b2ddeaf79

        • \Users\Admin\AppData\Local\Temp\mmagnl.exe

          Filesize

          700KB

          MD5

          f253630b336f3c9888be661d3e52cc9c

          SHA1

          437c1a8e57b64245198cbfc4f114fa05b0664763

          SHA256

          c4e7db6f280533ca37161c6984b2cbeaeffcf15fff301cc70ddfd30e869dff4c

          SHA512

          5885e0117f6cc40ab362aa2121b91c9558106f6a419a4c15623a5aec134ff1b3f127d26b154ea985e7e34be9585401782c548c44bbec3f5fac0f505b2ddeaf79

        • \Users\Admin\AppData\Local\Temp\mmagnl.exe

          Filesize

          700KB

          MD5

          f253630b336f3c9888be661d3e52cc9c

          SHA1

          437c1a8e57b64245198cbfc4f114fa05b0664763

          SHA256

          c4e7db6f280533ca37161c6984b2cbeaeffcf15fff301cc70ddfd30e869dff4c

          SHA512

          5885e0117f6cc40ab362aa2121b91c9558106f6a419a4c15623a5aec134ff1b3f127d26b154ea985e7e34be9585401782c548c44bbec3f5fac0f505b2ddeaf79

        • \Users\Admin\AppData\Local\Temp\mmagnl.exe

          Filesize

          700KB

          MD5

          f253630b336f3c9888be661d3e52cc9c

          SHA1

          437c1a8e57b64245198cbfc4f114fa05b0664763

          SHA256

          c4e7db6f280533ca37161c6984b2cbeaeffcf15fff301cc70ddfd30e869dff4c

          SHA512

          5885e0117f6cc40ab362aa2121b91c9558106f6a419a4c15623a5aec134ff1b3f127d26b154ea985e7e34be9585401782c548c44bbec3f5fac0f505b2ddeaf79

        • \Users\Admin\AppData\Local\Temp\mmagnl.exe

          Filesize

          700KB

          MD5

          f253630b336f3c9888be661d3e52cc9c

          SHA1

          437c1a8e57b64245198cbfc4f114fa05b0664763

          SHA256

          c4e7db6f280533ca37161c6984b2cbeaeffcf15fff301cc70ddfd30e869dff4c

          SHA512

          5885e0117f6cc40ab362aa2121b91c9558106f6a419a4c15623a5aec134ff1b3f127d26b154ea985e7e34be9585401782c548c44bbec3f5fac0f505b2ddeaf79

        • memory/1076-54-0x0000000075C51000-0x0000000075C53000-memory.dmp

          Filesize

          8KB

        • memory/1076-65-0x0000000074491000-0x0000000074493000-memory.dmp

          Filesize

          8KB

        • memory/1600-93-0x0000000074171000-0x0000000074173000-memory.dmp

          Filesize

          8KB

        • memory/1600-95-0x0000000074171000-0x0000000074173000-memory.dmp

          Filesize

          8KB

        • memory/1652-67-0x0000000074381000-0x0000000074383000-memory.dmp

          Filesize

          8KB

        • memory/1652-68-0x0000000074171000-0x0000000074173000-memory.dmp

          Filesize

          8KB

        • memory/1652-71-0x0000000074351000-0x0000000074353000-memory.dmp

          Filesize

          8KB

        • memory/1652-72-0x0000000074171000-0x0000000074173000-memory.dmp

          Filesize

          8KB

        • memory/1652-73-0x0000000074001000-0x0000000074003000-memory.dmp

          Filesize

          8KB

        • memory/1652-66-0x0000000074341000-0x0000000074343000-memory.dmp

          Filesize

          8KB

        • memory/1652-94-0x0000000074001000-0x0000000074003000-memory.dmp

          Filesize

          8KB