Analysis

  • max time kernel
    149s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20231023-en
  • resource tags

    arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
  • submitted
    17/11/2023, 05:42

General

  • Target

    NEAS.3ba9aa018f1db28d602ba7d39fc12ee0.exe

  • Size

    1.3MB

  • MD5

    3ba9aa018f1db28d602ba7d39fc12ee0

  • SHA1

    4af1676b274c25919290a3f2875411f0ba202dbe

  • SHA256

    b2915f3f45fdd5c3fc069c370c5a2bd31771c4b23ec85df65eca18fe2f6c8b0c

  • SHA512

    3a0eb3ddcf7b8e125b7a34150a413222d1a4206da46d7def67fc7750924b32e5b4d453c290c59a700ff68aa179d756bcae96848d8c9a96fb762e4edee2182939

  • SSDEEP

    12288:f1AKS92AOcE5D+AvzNzmkEaU5WMaN9t86b58fAH4iYwZzvZF0wN5DmYXc2OZ1h2M:NAtODZvtt8YH+wZzv08mkc2AjjvrEH7C

Malware Config

Signatures

  • ACProtect 1.3x - 1.4x DLL software 2 IoCs

    Detects file using ACProtect software.

  • Loads dropped DLL 2 IoCs
  • UPX packed file 9 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates connected drives 3 TTPs 26 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in Program Files directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NEAS.3ba9aa018f1db28d602ba7d39fc12ee0.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.3ba9aa018f1db28d602ba7d39fc12ee0.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Writes to the Master Boot Record (MBR)
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    PID:2320

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Program Files\Common Files\System\symsrv.dll

          Filesize

          67KB

          MD5

          7574cf2c64f35161ab1292e2f532aabf

          SHA1

          14ba3fa927a06224dfe587014299e834def4644f

          SHA256

          de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

          SHA512

          4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

        • C:\Program Files\Common Files\System\symsrv.dll.000

          Filesize

          175B

          MD5

          1130c911bf5db4b8f7cf9b6f4b457623

          SHA1

          48e734c4bc1a8b5399bff4954e54b268bde9d54c

          SHA256

          eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1

          SHA512

          94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

        • \PROGRA~2\MICROS~1\Office14\GROOVEEX.DLL.tmp

          Filesize

          4.1MB

          MD5

          65247a3b271d8f3692a6c588a4bcc985

          SHA1

          cb80f89c0545e1d884f72a1a441660c87c1e5350

          SHA256

          e0e2d0e82fd3395827e19067f75740ba34583d1b5576d43c65ecd82d90ca79da

          SHA512

          0dc5551a1007c467198c2d11393ff43b9ccb2ff8c8312e5ec17bd0ea94d7e7b10821e8b29985f8449adf95c5b4537385d57ce1d22624ee897a7b7b68fdb580c3

        • \Program Files\Common Files\System\symsrv.dll

          Filesize

          67KB

          MD5

          7574cf2c64f35161ab1292e2f532aabf

          SHA1

          14ba3fa927a06224dfe587014299e834def4644f

          SHA256

          de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

          SHA512

          4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

        • memory/2320-17-0x0000000076C10000-0x0000000076C45000-memory.dmp

          Filesize

          212KB

        • memory/2320-16-0x0000000010000000-0x0000000010030000-memory.dmp

          Filesize

          192KB

        • memory/2320-5-0x0000000000400000-0x0000000000533000-memory.dmp

          Filesize

          1.2MB

        • memory/2320-20-0x0000000010000000-0x0000000010030000-memory.dmp

          Filesize

          192KB

        • memory/2320-21-0x0000000000400000-0x0000000000533000-memory.dmp

          Filesize

          1.2MB

        • memory/2320-22-0x0000000076C10000-0x0000000076C45000-memory.dmp

          Filesize

          212KB

        • memory/2320-25-0x0000000010000000-0x0000000010030000-memory.dmp

          Filesize

          192KB

        • memory/2320-28-0x0000000010000000-0x0000000010030000-memory.dmp

          Filesize

          192KB

        • memory/2320-3-0x0000000010000000-0x0000000010030000-memory.dmp

          Filesize

          192KB

        • memory/2320-31-0x0000000010000000-0x0000000010030000-memory.dmp

          Filesize

          192KB

        • memory/2320-35-0x0000000010000000-0x0000000010030000-memory.dmp

          Filesize

          192KB