Analysis

  • max time kernel
    231s
  • max time network
    309s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    28-11-2022 15:00

General

  • Target

    2fa935884bbdef3afe3c59ba894b93a087fea7c56af02ab0c831a6f581031f35.exe

  • Size

    544KB

  • MD5

    e038a0d251bb672af6506aeb420f2388

  • SHA1

    0f085d0385eb58fe0126cef171e3bfcfb2fd25bf

  • SHA256

    2fa935884bbdef3afe3c59ba894b93a087fea7c56af02ab0c831a6f581031f35

  • SHA512

    05ba101950b87331bf0646346202e507a7eaab19c8b4f8982ba43798366669a397149e32e3d5776f6b52d04e89f9df6af0ad3bfd299fb9e967941a5de98f170a

  • SSDEEP

    12288:9R1cL/pzrkTj+3B6P0M4e5iVs3kkG6FD:X1ctzrk41pe5i0kkG6

Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Sets file execution options in registry 2 TTPs 64 IoCs
  • Loads dropped DLL 1 IoCs
  • Drops file in System32 directory 3 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 26 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2fa935884bbdef3afe3c59ba894b93a087fea7c56af02ab0c831a6f581031f35.exe
    "C:\Users\Admin\AppData\Local\Temp\2fa935884bbdef3afe3c59ba894b93a087fea7c56af02ab0c831a6f581031f35.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:432
    • C:\Users\Admin\AppData\Local\Temp\2fa935884bbdef3afe3c59ba894b93a087fea7c56af02ab0c831a6f581031f35.exe
      "C:\Users\Admin\AppData\Local\Temp\2fa935884bbdef3afe3c59ba894b93a087fea7c56af02ab0c831a6f581031f35.exe"
      2⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:592
      • C:\Windows\SysWOW64\Windows Firewall\winfirewall.exe
        "C:\Windows\system32\Windows Firewall\winfirewall.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1588
        • C:\Windows\SysWOW64\Windows Firewall\winfirewall.exe
          "C:\Windows\SysWOW64\Windows Firewall\winfirewall.exe"
          4⤵
          • Modifies WinLogon for persistence
          • Modifies visiblity of hidden/system files in Explorer
          • Executes dropped EXE
          • Sets file execution options in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:1644

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Winlogon Helper DLL

1
T1004

Hidden Files and Directories

1
T1158

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

3
T1112

Hidden Files and Directories

1
T1158

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Windows\SysWOW64\Windows Firewall\winfirewall.exe
    Filesize

    544KB

    MD5

    e038a0d251bb672af6506aeb420f2388

    SHA1

    0f085d0385eb58fe0126cef171e3bfcfb2fd25bf

    SHA256

    2fa935884bbdef3afe3c59ba894b93a087fea7c56af02ab0c831a6f581031f35

    SHA512

    05ba101950b87331bf0646346202e507a7eaab19c8b4f8982ba43798366669a397149e32e3d5776f6b52d04e89f9df6af0ad3bfd299fb9e967941a5de98f170a

  • C:\Windows\SysWOW64\Windows Firewall\winfirewall.exe
    Filesize

    544KB

    MD5

    e038a0d251bb672af6506aeb420f2388

    SHA1

    0f085d0385eb58fe0126cef171e3bfcfb2fd25bf

    SHA256

    2fa935884bbdef3afe3c59ba894b93a087fea7c56af02ab0c831a6f581031f35

    SHA512

    05ba101950b87331bf0646346202e507a7eaab19c8b4f8982ba43798366669a397149e32e3d5776f6b52d04e89f9df6af0ad3bfd299fb9e967941a5de98f170a

  • C:\Windows\SysWOW64\Windows Firewall\winfirewall.exe
    Filesize

    544KB

    MD5

    e038a0d251bb672af6506aeb420f2388

    SHA1

    0f085d0385eb58fe0126cef171e3bfcfb2fd25bf

    SHA256

    2fa935884bbdef3afe3c59ba894b93a087fea7c56af02ab0c831a6f581031f35

    SHA512

    05ba101950b87331bf0646346202e507a7eaab19c8b4f8982ba43798366669a397149e32e3d5776f6b52d04e89f9df6af0ad3bfd299fb9e967941a5de98f170a

  • \Windows\SysWOW64\Windows Firewall\winfirewall.exe
    Filesize

    544KB

    MD5

    e038a0d251bb672af6506aeb420f2388

    SHA1

    0f085d0385eb58fe0126cef171e3bfcfb2fd25bf

    SHA256

    2fa935884bbdef3afe3c59ba894b93a087fea7c56af02ab0c831a6f581031f35

    SHA512

    05ba101950b87331bf0646346202e507a7eaab19c8b4f8982ba43798366669a397149e32e3d5776f6b52d04e89f9df6af0ad3bfd299fb9e967941a5de98f170a

  • memory/432-70-0x0000000074310000-0x00000000748BB000-memory.dmp
    Filesize

    5.7MB

  • memory/432-55-0x0000000074310000-0x00000000748BB000-memory.dmp
    Filesize

    5.7MB

  • memory/432-54-0x00000000759F1000-0x00000000759F3000-memory.dmp
    Filesize

    8KB

  • memory/592-63-0x0000000000080000-0x00000000000CE000-memory.dmp
    Filesize

    312KB

  • memory/592-95-0x00000000742A0000-0x000000007484B000-memory.dmp
    Filesize

    5.7MB

  • memory/592-64-0x0000000000080000-0x00000000000CE000-memory.dmp
    Filesize

    312KB

  • memory/592-72-0x0000000000080000-0x00000000000CE000-memory.dmp
    Filesize

    312KB

  • memory/592-74-0x00000000742A0000-0x000000007484B000-memory.dmp
    Filesize

    5.7MB

  • memory/592-62-0x000000000044896E-mapping.dmp
  • memory/592-59-0x0000000000080000-0x00000000000CE000-memory.dmp
    Filesize

    312KB

  • memory/592-57-0x0000000000080000-0x00000000000CE000-memory.dmp
    Filesize

    312KB

  • memory/592-68-0x0000000000080000-0x00000000000CE000-memory.dmp
    Filesize

    312KB

  • memory/592-56-0x0000000000080000-0x00000000000CE000-memory.dmp
    Filesize

    312KB

  • memory/592-97-0x00000000742A0000-0x000000007484B000-memory.dmp
    Filesize

    5.7MB

  • memory/1588-76-0x0000000000000000-mapping.dmp
  • memory/1588-90-0x00000000742A0000-0x000000007484B000-memory.dmp
    Filesize

    5.7MB

  • memory/1644-86-0x000000000044896E-mapping.dmp
  • memory/1644-94-0x00000000742A0000-0x000000007484B000-memory.dmp
    Filesize

    5.7MB

  • memory/1644-92-0x0000000000400000-0x000000000044E000-memory.dmp
    Filesize

    312KB

  • memory/1644-96-0x00000000742A0000-0x000000007484B000-memory.dmp
    Filesize

    5.7MB

  • memory/1644-89-0x0000000000400000-0x000000000044E000-memory.dmp
    Filesize

    312KB