Analysis

  • max time kernel
    68s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    20-11-2022 08:07

General

  • Target

    91fd407437478499b61f53ab7ace4fc0a3c2ed6bd5ed2cc3cbcfb89c1b02fcce.exe

  • Size

    328KB

  • MD5

    07e6b8a7d2cb05fa896ed147d705a6a0

  • SHA1

    20b7808356e703890a75ce6de876d6012ce99e06

  • SHA256

    91fd407437478499b61f53ab7ace4fc0a3c2ed6bd5ed2cc3cbcfb89c1b02fcce

  • SHA512

    4ca8c159e2d78c739bf22ead3664da8a1dcac41c540d4362a113a6a3ab225980402486a97d9f8d40f061f9a8ff796d93828425ddb34dbafdd983df15d3f7ae96

  • SSDEEP

    6144:MyWOeLm+tkxoGQvT+W4+HMc+MEGRQ6saHSMf3z0AzbLUG50Tpm+MmvbWdlL0d5aU:MCemx0vN3HKGi6sYjJLUGGtedud5tr7

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Possible privilege escalation attempt 4 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Deletes itself 1 IoCs
  • Modifies file permissions 1 TTPs 4 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 4 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Maps connected drives based on registry 3 TTPs 3 IoCs

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

  • Drops file in System32 directory 4 IoCs
  • Modifies registry class 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: LoadsDriver 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\91fd407437478499b61f53ab7ace4fc0a3c2ed6bd5ed2cc3cbcfb89c1b02fcce.exe
    "C:\Users\Admin\AppData\Local\Temp\91fd407437478499b61f53ab7ace4fc0a3c2ed6bd5ed2cc3cbcfb89c1b02fcce.exe"
    1⤵
    • Drops file in Drivers directory
    • Sets service image path in registry
    • Installs/modifies Browser Helper Object
    • Maps connected drives based on registry
    • Drops file in System32 directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: LoadsDriver
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2000
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c takeown /f C:\Windows\SysWOW64\wshtcpip.dll && icacls C:\Windows\SysWOW64\wshtcpip.dll /grant administrators:F
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:976
      • C:\Windows\SysWOW64\takeown.exe
        takeown /f C:\Windows\SysWOW64\wshtcpip.dll
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        • Suspicious use of AdjustPrivilegeToken
        PID:1572
      • C:\Windows\SysWOW64\icacls.exe
        icacls C:\Windows\SysWOW64\wshtcpip.dll /grant administrators:F
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:368
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c takeown /f C:\Windows\SysWOW64\midimap.dll && icacls C:\Windows\SysWOW64\midimap.dll /grant administrators:F
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:364
      • C:\Windows\SysWOW64\takeown.exe
        takeown /f C:\Windows\SysWOW64\midimap.dll
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        • Suspicious use of AdjustPrivilegeToken
        PID:928
      • C:\Windows\SysWOW64\icacls.exe
        icacls C:\Windows\SysWOW64\midimap.dll /grant administrators:F
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:752
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c C:\Users\Admin\AppData\Local\Temp\ahnmove.bat
      2⤵
      • Deletes itself
      PID:960

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\ahnmove.bat
    Filesize

    181B

    MD5

    d05a1fdde4d7cda5b32eede1b364e1b9

    SHA1

    cd298941c1a99c2ec201f64251177a13f01d3908

    SHA256

    f6e56a62b5830145dfd6f758c1674b7c9842f7c1e6e56e0e5a8ddde54391e6c7

    SHA512

    958c64e8026cb1c435d48db7ba8b41082bd1271c75b48f4ccc7b55574a8025ee0dc238cbafc7119469df6d7da5a90ec93ea8e37edf40189a6c98cfed6fce7b90

  • memory/364-61-0x0000000000000000-mapping.dmp
  • memory/368-60-0x0000000000000000-mapping.dmp
  • memory/752-63-0x0000000000000000-mapping.dmp
  • memory/928-62-0x0000000000000000-mapping.dmp
  • memory/960-64-0x0000000000000000-mapping.dmp
  • memory/976-58-0x0000000000000000-mapping.dmp
  • memory/1572-59-0x0000000000000000-mapping.dmp
  • memory/2000-57-0x0000000000220000-0x0000000000240000-memory.dmp
    Filesize

    128KB

  • memory/2000-56-0x0000000000220000-0x0000000000240000-memory.dmp
    Filesize

    128KB

  • memory/2000-54-0x0000000075501000-0x0000000075503000-memory.dmp
    Filesize

    8KB

  • memory/2000-65-0x0000000001000000-0x000000000116A000-memory.dmp
    Filesize

    1.4MB

  • memory/2000-55-0x0000000001000000-0x000000000116A000-memory.dmp
    Filesize

    1.4MB