Analysis

  • max time kernel
    29s
  • max time network
    136s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    26-07-2021 13:00

General

  • Target

    0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.sample.exe

  • Size

    112KB

  • MD5

    d01fc079881dc0d33a88e4f8df1ae7ce

  • SHA1

    c40c8848808da12ef78c68de1e6477b862161a43

  • SHA256

    0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821

  • SHA512

    83bca79d1f0ac14c6d79685fd192964e7117e8c9c734036abddfdbb068c801ff38027a0812a2499e1d9e528a47af07150cafee27384b5a78b8fc32c23bd21130

Malware Config

Signatures

  • WastedLocker

    Ransomware family seen in the wild since May 2020.

  • CryptOne packer 4 IoCs

    Detects CryptOne packer defined in NCC blogpost.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Executes dropped EXE 2 IoCs
  • Modifies extensions of user files 42 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Possible privilege escalation attempt 2 IoCs
  • Modifies file permissions 1 TTPs 2 IoCs
  • Drops file in System32 directory 2 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • NTFS ADS 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs
  • Views/modifies file attributes 1 TTPs 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.sample.exe
    "C:\Users\Admin\AppData\Local\Temp\0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.sample.exe"
    1⤵
    • NTFS ADS
    • Suspicious use of WriteProcessMemory
    PID:580
    • C:\Users\Admin\AppData\Roaming\Product:bin
      C:\Users\Admin\AppData\Roaming\Product:bin -r
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:2708
      • C:\Windows\system32\vssadmin.exe
        C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
        3⤵
        • Interacts with shadow copies
        PID:192
      • C:\Windows\SysWOW64\takeown.exe
        C:\Windows\system32\takeown.exe /F C:\Windows\system32\Product.exe
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:4092
      • C:\Windows\SysWOW64\icacls.exe
        C:\Windows\system32\icacls.exe C:\Windows\system32\Product.exe /reset
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:2140
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Product" & del "C:\Users\Admin\AppData\Roaming\Product"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3504
        • C:\Windows\SysWOW64\choice.exe
          choice /t 10 /d y
          4⤵
            PID:3560
          • C:\Windows\SysWOW64\attrib.exe
            attrib -h "C:\Users\Admin\AppData\Roaming\Product"
            4⤵
            • Views/modifies file attributes
            PID:196
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.sample.exe" & del "C:\Users\Admin\AppData\Local\Temp\0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.sample.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3948
        • C:\Windows\SysWOW64\choice.exe
          choice /t 10 /d y
          3⤵
            PID:960
          • C:\Windows\SysWOW64\attrib.exe
            attrib -h "C:\Users\Admin\AppData\Local\Temp\0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.sample.exe"
            3⤵
            • Views/modifies file attributes
            PID:192
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1940
      • C:\Windows\SysWOW64\Product.exe
        C:\Windows\SysWOW64\Product.exe -s
        1⤵
        • Executes dropped EXE
        • Modifies extensions of user files
        • Suspicious use of WriteProcessMemory
        PID:2200
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Product.exe" & del "C:\Windows\SysWOW64\Product.exe"
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:3780
          • C:\Windows\SysWOW64\choice.exe
            choice /t 10 /d y
            3⤵
              PID:200
            • C:\Windows\SysWOW64\attrib.exe
              attrib -h "C:\Windows\SysWOW64\Product.exe"
              3⤵
              • Drops file in System32 directory
              • Views/modifies file attributes
              PID:2764

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Persistence

        Hidden Files and Directories

        1
        T1158

        Defense Evasion

        File Deletion

        2
        T1107

        File Permissions Modification

        1
        T1222

        Hidden Files and Directories

        1
        T1158

        Impact

        Inhibit System Recovery

        2
        T1490

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Roaming\Product:bin
          MD5

          d01fc079881dc0d33a88e4f8df1ae7ce

          SHA1

          c40c8848808da12ef78c68de1e6477b862161a43

          SHA256

          0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821

          SHA512

          83bca79d1f0ac14c6d79685fd192964e7117e8c9c734036abddfdbb068c801ff38027a0812a2499e1d9e528a47af07150cafee27384b5a78b8fc32c23bd21130

        • C:\Users\Admin\AppData\Roaming\Product:bin
          MD5

          d01fc079881dc0d33a88e4f8df1ae7ce

          SHA1

          c40c8848808da12ef78c68de1e6477b862161a43

          SHA256

          0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821

          SHA512

          83bca79d1f0ac14c6d79685fd192964e7117e8c9c734036abddfdbb068c801ff38027a0812a2499e1d9e528a47af07150cafee27384b5a78b8fc32c23bd21130

        • C:\Windows\SysWOW64\Product.exe
          MD5

          d01fc079881dc0d33a88e4f8df1ae7ce

          SHA1

          c40c8848808da12ef78c68de1e6477b862161a43

          SHA256

          0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821

          SHA512

          83bca79d1f0ac14c6d79685fd192964e7117e8c9c734036abddfdbb068c801ff38027a0812a2499e1d9e528a47af07150cafee27384b5a78b8fc32c23bd21130

        • C:\Windows\SysWOW64\Product.exe
          MD5

          d01fc079881dc0d33a88e4f8df1ae7ce

          SHA1

          c40c8848808da12ef78c68de1e6477b862161a43

          SHA256

          0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821

          SHA512

          83bca79d1f0ac14c6d79685fd192964e7117e8c9c734036abddfdbb068c801ff38027a0812a2499e1d9e528a47af07150cafee27384b5a78b8fc32c23bd21130

        • memory/192-119-0x0000000000000000-mapping.dmp
        • memory/192-134-0x0000000000000000-mapping.dmp
        • memory/196-136-0x0000000000000000-mapping.dmp
        • memory/200-131-0x0000000000000000-mapping.dmp
        • memory/580-115-0x0000000000400000-0x000000000041E000-memory.dmp
          Filesize

          120KB

        • memory/580-114-0x0000000000580000-0x0000000000592000-memory.dmp
          Filesize

          72KB

        • memory/960-133-0x0000000000000000-mapping.dmp
        • memory/2140-124-0x0000000000000000-mapping.dmp
        • memory/2200-126-0x0000000000420000-0x00000000004CE000-memory.dmp
          Filesize

          696KB

        • memory/2200-127-0x0000000000400000-0x000000000041E000-memory.dmp
          Filesize

          120KB

        • memory/2708-120-0x0000000000420000-0x000000000056A000-memory.dmp
          Filesize

          1.3MB

        • memory/2708-121-0x0000000000400000-0x000000000041E000-memory.dmp
          Filesize

          120KB

        • memory/2708-116-0x0000000000000000-mapping.dmp
        • memory/2764-135-0x0000000000000000-mapping.dmp
        • memory/3504-128-0x0000000000000000-mapping.dmp
        • memory/3560-132-0x0000000000000000-mapping.dmp
        • memory/3780-129-0x0000000000000000-mapping.dmp
        • memory/3948-130-0x0000000000000000-mapping.dmp
        • memory/4092-122-0x0000000000000000-mapping.dmp