Analysis

  • max time kernel
    30s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    29/11/2022, 05:57

General

  • Target

    89dbc443ad952b8f8b2ba6e43126ef43fde0bf9024cf38f6bc66514a4525fb19.dll

  • Size

    60KB

  • MD5

    68b5aa82f663f1d46fde94f6ffefb1d9

  • SHA1

    1234892386db5d4fc63225512057a38e499c877b

  • SHA256

    89dbc443ad952b8f8b2ba6e43126ef43fde0bf9024cf38f6bc66514a4525fb19

  • SHA512

    6cb951a3a49a75538d4ecdb765ae2f7aac06eb7247b397efef8416c2ac9a14ff6bf58e0516e10c653828ea735ddb65a16d37d9b61c28f8f40704d63394e10663

  • SSDEEP

    768:aBZX+Nzp4mjNx4Ds4l6iE18++uWdB9GBc81f+Iw5BLJUXNPgH9nmscY:aPdc1inuWdB9r8YXPJY2BmscY

Score
8/10

Malware Config

Signatures

  • Modifies AppInit DLL entries 2 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Runs .reg file with regedit 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\89dbc443ad952b8f8b2ba6e43126ef43fde0bf9024cf38f6bc66514a4525fb19.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1632
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\89dbc443ad952b8f8b2ba6e43126ef43fde0bf9024cf38f6bc66514a4525fb19.dll,#1
      2⤵
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1488
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c C:\Users\Admin\AppData\Local\Temp\a.reg
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:960
        • C:\Windows\SysWOW64\regedit.exe
          "regedit.exe" /s "C:\Users\Admin\AppData\Local\Temp\a.reg"
          4⤵
          • Runs .reg file with regedit
          PID:1340

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\a.reg

    Filesize

    152B

    MD5

    b100f5324ef74ded0b998e64d07a2e19

    SHA1

    40b0d7f51bf2dd8451f1b723d21355c471a5fa46

    SHA256

    3db613d24a75ae220891698c055e1c580a42e58564f568a0510db87581cc2042

    SHA512

    c12391bb37c334074f7d7e1257b6364fd5cbce848e0a8fe15b8326f54fd9568fe3baec58618c4334027a774a06a08ec249cb71db925c1f85feee6a3d3a816c04

  • memory/1488-55-0x0000000075B41000-0x0000000075B43000-memory.dmp

    Filesize

    8KB

  • memory/1488-56-0x0000000010000000-0x000000001000F000-memory.dmp

    Filesize

    60KB