Analysis

  • max time kernel
    63s
  • max time network
    51s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    02-10-2022 23:09

General

  • Target

    23037ce9d0d0c993c9dc66adeff4d53b5aa8038f1eae1c1a596ccb87e870e28a.exe

  • Size

    350KB

  • MD5

    6ad13c8ceae3c41e26ef06a6e8ad6b10

  • SHA1

    c560c593fe899a35257ada608ef1973fdeb03d63

  • SHA256

    23037ce9d0d0c993c9dc66adeff4d53b5aa8038f1eae1c1a596ccb87e870e28a

  • SHA512

    384f3634c341c33470c060e93913c89132cfb2ff41c70a53e5b3cdf7a384458fecd5ae2624b187e0dd2c9635155c9cd963aa8168f76ab4d5545f71f98df86a4e

  • SSDEEP

    6144:TyXu7IEBSsQ9ElMwm60lmqs7MTRGA3h3GVqdppJXEGhBukJF/KAwxFUOWdEmh:T3BdQLL4BE93NGVYZX9BukJlwxSJdEm

Malware Config

Signatures

  • Drops file in Drivers directory 2 IoCs
  • Possible privilege escalation attempt 2 IoCs
  • Sets service image path in registry 2 TTPs 2 IoCs
  • UPX packed file 3 IoCs

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

  • Deletes itself 1 IoCs
  • Modifies file permissions 1 TTPs 2 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 4 IoCs

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

  • Drops file in System32 directory 5 IoCs
  • Modifies registry class 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: LoadsDriver 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\23037ce9d0d0c993c9dc66adeff4d53b5aa8038f1eae1c1a596ccb87e870e28a.exe
    "C:\Users\Admin\AppData\Local\Temp\23037ce9d0d0c993c9dc66adeff4d53b5aa8038f1eae1c1a596ccb87e870e28a.exe"
    1⤵
    • Drops file in Drivers directory
    • Sets service image path in registry
    • Installs/modifies Browser Helper Object
    • Drops file in System32 directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: LoadsDriver
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1184
    • 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:648
      • 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:636
      • C:\Windows\SysWOW64\icacls.exe
        icacls C:\Windows\SysWOW64\wshtcpip.dll /grant administrators:F
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:1680
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c C:\Users\Admin\AppData\Local\Temp\ahnmove.bat
      2⤵
      • Deletes itself
      PID:1712

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Browser Extensions

1
T1176

Defense Evasion

Modify Registry

2
T1112

File Permissions Modification

1
T1222

Replay Monitor

Loading Replay Monitor...

Downloads

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

    181B

    MD5

    d60c6bc7ea955253d79136a5b44e9591

    SHA1

    a818609f9f0f7881abfb52b0be529c6c6a50ebb9

    SHA256

    24f820e4f0e9e050de0845a76c5c299953c55391b183ea7e801b500ff7c2a9c1

    SHA512

    0162866a56033b07075a2126168e9b0f0935c1f2d9552209daa4352f73ac89c92a8e690e79a37a2e430dd53c4bbcdcb169cca89fb03597611854972785bbc3d7

  • memory/636-58-0x0000000000000000-mapping.dmp
  • memory/648-57-0x0000000000000000-mapping.dmp
  • memory/1184-54-0x0000000001000000-0x000000000112D000-memory.dmp
    Filesize

    1.2MB

  • memory/1184-55-0x0000000074BB1000-0x0000000074BB3000-memory.dmp
    Filesize

    8KB

  • memory/1184-56-0x0000000001000000-0x000000000112D000-memory.dmp
    Filesize

    1.2MB

  • memory/1184-61-0x0000000001000000-0x000000000112D000-memory.dmp
    Filesize

    1.2MB

  • memory/1680-59-0x0000000000000000-mapping.dmp
  • memory/1712-60-0x0000000000000000-mapping.dmp