Analysis

  • max time kernel
    151s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/10/2023, 17:03

General

  • Target

    bc082e85f4f4ea47b3a27d31690c78bdffec1444a5d548b12442f8d73bf524eb.exe

  • Size

    399KB

  • MD5

    6b536c7f28c331c46c88e5e1827f83d0

  • SHA1

    c55b37d2fcbe8c5178f065b7fb08395aafd68dc9

  • SHA256

    bc082e85f4f4ea47b3a27d31690c78bdffec1444a5d548b12442f8d73bf524eb

  • SHA512

    7e22107cb788c71459510aef25a2123c058855e03c7c4ea6530f457246b7d84aad965b8cce90ed305d94f66ca8e9699d26e80b03572b13e710738dc77112d5e0

  • SSDEEP

    6144:XKiYJL+K7EQ5vrt5AVfL8haEK4sDzLPFZcEOkCybEaQRXr9HNdvOa:LqEU0Vf4ha0sDzDOkx2LIa

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Unexpected DNS network traffic destination 1 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Drops file in System32 directory 16 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 2 IoCs
  • Modifies Control Panel 2 IoCs
  • Modifies data under HKEY_USERS 9 IoCs
  • Modifies registry class 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: LoadsDriver 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 31 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Windows\system32\winlogon.exe
    winlogon.exe
    1⤵
      PID:584
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
      • Drops file in Program Files directory
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:3172
      • C:\Users\Admin\AppData\Local\Temp\bc082e85f4f4ea47b3a27d31690c78bdffec1444a5d548b12442f8d73bf524eb.exe
        "C:\Users\Admin\AppData\Local\Temp\bc082e85f4f4ea47b3a27d31690c78bdffec1444a5d548b12442f8d73bf524eb.exe"
        2⤵
        • Checks computer location settings
        • Drops file in System32 directory
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2196
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c timeout /t 1 & del /Q /F "C:\Users\Admin\AppData\Local\Temp\bc082e85f4f4ea47b3a27d31690c78bdffec1444a5d548b12442f8d73bf524eb.exe"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2412
          • C:\Windows\SysWOW64\timeout.exe
            timeout /t 1
            4⤵
            • Delays execution with timeout.exe
            PID:708
      • C:\Program Files\rdpsign.exe
        "C:\Program Files\rdpsign.exe"
        2⤵
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Drops file in System32 directory
        • Drops file in Windows directory
        • Checks SCSI registry key(s)
        • Modifies Control Panel
        • Suspicious use of AdjustPrivilegeToken
        PID:548
    • C:\Windows\Syswow64\b9de8270
      C:\Windows\Syswow64\b9de8270
      1⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1540
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout /t 1 & del /Q /F "C:\Windows\Syswow64\b9de8270"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4604
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 1
          3⤵
          • Delays execution with timeout.exe
          PID:2468

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Program Files\rdpsign.exe

            Filesize

            98KB

            MD5

            a85f09a9d65752c5ea50eba8431b87af

            SHA1

            578655a959acb372602b6715e6589ded4ad45032

            SHA256

            8cb8a09b32c56c8e1c7bca6b2ef24c9705fb494ec2ca834256b56ec378c90159

            SHA512

            781acb6bbd7fe53a2c6e80839c4c7168a1f0919df06d296953f7a4f25c891c346041f82f4517941b0c4cac976a91697002e5a441aab012674ced8343fd80dc2d

          • C:\Users\Admin\AppData\Local\Temp\IcoC776.exe

            Filesize

            145KB

            MD5

            d2a1752df6431ac0b448cc8f25d0b3d4

            SHA1

            87afaeb38c8bec3278830a470f94ef39726fb26c

            SHA256

            9f4665e08fbfb72b2317bafa85b9ed9491f7df32dd9d818ca726d6d2ae2d4f35

            SHA512

            8411240eea9dd8b048da8a8023f87a2e3411ab67e8f2961ca5098b9df7ba27a5d2b31e339bb2d122a18880633dac569bbf3b6061619656a2582fe5fb16293688

          • C:\Users\Admin\AppData\Local\Temp\IcoDE1C.tmp

            Filesize

            183KB

            MD5

            e00fb9f91bcbbccb56a2455456d2b70a

            SHA1

            9ad3517db35b63ac08185f395a34980eea5d0840

            SHA256

            07b1a5e314075499de803a074a431ac7376121412b190c1f2deae5976b55403f

            SHA512

            ea3c303976e0ad18a0071c8d16570153ad03f257cc3f5bc59ac3ca3d680a18e714f9711938aa0ebba45532fa4a2b43863f6d210a7ef67ce95d576dd5153cdd20

          • C:\Users\Admin\Desktop\Íæ´«ÆæÇëµãÎÒ.lnk

            Filesize

            1KB

            MD5

            fbde3b58e62193a9ab361622026c866a

            SHA1

            08fb1e1a42bca541bf9eb1c2f139ab824e570247

            SHA256

            d171bf7d203bf38b882776ded1482f7a6ae6fa5de63b5f91c44dee9e291d6369

            SHA512

            64fa8b59523b2e00b78128dca68324c87d769d37cd7f04e21d5c3ed856325b3d2ed88a08e1c1f900a18eba8df8714fe8d099a7b970446eef1330e2ab3ff89377

          • C:\Windows\SysWOW64\b9de8270

            Filesize

            399KB

            MD5

            96e1bdff0b93a2b3b55c270933efcbe5

            SHA1

            3b976d555733d10026c2dfcae146f119ff7d6596

            SHA256

            38f71d47fa8ba9eded1309e2b7930e03ea814eea417f0efc5542e94c523693a4

            SHA512

            917ffe3c482cf62e669ee1190e65441c614edeed7419e624665d80e366f1493099ac6a3560560babac629e15a16d28e26a3fac252af7c9671ac934c2bb36e9f2

          • C:\Windows\SysWOW64\b9de8270

            Filesize

            399KB

            MD5

            96e1bdff0b93a2b3b55c270933efcbe5

            SHA1

            3b976d555733d10026c2dfcae146f119ff7d6596

            SHA256

            38f71d47fa8ba9eded1309e2b7930e03ea814eea417f0efc5542e94c523693a4

            SHA512

            917ffe3c482cf62e669ee1190e65441c614edeed7419e624665d80e366f1493099ac6a3560560babac629e15a16d28e26a3fac252af7c9671ac934c2bb36e9f2

          • memory/548-19-0x0000020CE0EB0000-0x0000020CE0F7B000-memory.dmp

            Filesize

            812KB

          • memory/548-68-0x0000020CE1CB0000-0x0000020CE1D67000-memory.dmp

            Filesize

            732KB

          • memory/548-18-0x0000020CDF420000-0x0000020CDF423000-memory.dmp

            Filesize

            12KB

          • memory/548-21-0x0000020CE0EB0000-0x0000020CE0F7B000-memory.dmp

            Filesize

            812KB

          • memory/548-64-0x0000020CDF6F0000-0x0000020CDF6F1000-memory.dmp

            Filesize

            4KB

          • memory/548-22-0x00007FFA247D0000-0x00007FFA247E0000-memory.dmp

            Filesize

            64KB

          • memory/548-69-0x0000020CE1090000-0x0000020CE1091000-memory.dmp

            Filesize

            4KB

          • memory/548-70-0x0000020CE10A0000-0x0000020CE10A1000-memory.dmp

            Filesize

            4KB

          • memory/548-73-0x0000020CE1CB0000-0x0000020CE1D67000-memory.dmp

            Filesize

            732KB

          • memory/548-67-0x0000020CE1080000-0x0000020CE1081000-memory.dmp

            Filesize

            4KB

          • memory/548-60-0x00007FFA247D0000-0x00007FFA247E0000-memory.dmp

            Filesize

            64KB

          • memory/548-66-0x0000020CE10A0000-0x0000020CE10A1000-memory.dmp

            Filesize

            4KB

          • memory/548-62-0x0000020CE0EB0000-0x0000020CE0F7B000-memory.dmp

            Filesize

            812KB

          • memory/548-63-0x0000020CE1090000-0x0000020CE1091000-memory.dmp

            Filesize

            4KB

          • memory/584-27-0x0000022C20A20000-0x0000022C20A48000-memory.dmp

            Filesize

            160KB

          • memory/584-65-0x0000022C20A60000-0x0000022C20A61000-memory.dmp

            Filesize

            4KB

          • memory/584-26-0x0000022C20A60000-0x0000022C20A61000-memory.dmp

            Filesize

            4KB

          • memory/584-24-0x0000022C20A10000-0x0000022C20A13000-memory.dmp

            Filesize

            12KB

          • memory/3172-61-0x0000000002430000-0x0000000002431000-memory.dmp

            Filesize

            4KB

          • memory/3172-47-0x0000000008700000-0x00000000087F7000-memory.dmp

            Filesize

            988KB

          • memory/3172-11-0x0000000002410000-0x0000000002413000-memory.dmp

            Filesize

            12KB

          • memory/3172-13-0x0000000002430000-0x0000000002431000-memory.dmp

            Filesize

            4KB

          • memory/3172-12-0x0000000008700000-0x00000000087F7000-memory.dmp

            Filesize

            988KB

          • memory/3172-10-0x0000000002410000-0x0000000002413000-memory.dmp

            Filesize

            12KB

          • memory/3172-8-0x0000000002410000-0x0000000002413000-memory.dmp

            Filesize

            12KB