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Analysis

  • max time kernel
    120s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    12/09/2024, 07:56

General

  • Target

    b3e33c93cefc11619de42b3876063480N.exe

  • Size

    3.1MB

  • MD5

    b3e33c93cefc11619de42b3876063480

  • SHA1

    7c5b487e67aa16aae375b107017a9b6b52547281

  • SHA256

    e767398f9d479aaafbb817a8b3584be495e94efec64998afa9337c43ea71ddc0

  • SHA512

    abe38e47abc4e9256791be87f659b0d0137fe2ebd21248a4d18da3994af65c1c0c2b690461b795c3a9bdf3b8303bb6d765390a2bd990ebc0ffeadbbe3b132729

  • SSDEEP

    49152:+UJ6ZNXox4SgJhBsfHJq/nCFT4Mv0Pt97R:+tR4xGnCtvw9

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 4 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • UAC bypass 3 TTPs 9 IoCs
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks whether UAC is enabled 1 TTPs 6 IoCs
  • Drops file in Windows directory 4 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • System policy modification 1 TTPs 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b3e33c93cefc11619de42b3876063480N.exe
    "C:\Users\Admin\AppData\Local\Temp\b3e33c93cefc11619de42b3876063480N.exe"
    1⤵
    • UAC bypass
    • Loads dropped DLL
    • Checks whether UAC is enabled
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:2708
    • \??\c:\windows\wininit.exe
      c:\windows\wininit.exe
      2⤵
      • Modifies WinLogon for persistence
      • Modifies visiblity of hidden/system files in Explorer
      • UAC bypass
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • System policy modification
      PID:2740
    • \??\c:\users\admin\appdata\local\svchost.exe
      c:\users\admin\appdata\local\svchost.exe
      2⤵
      • Modifies WinLogon for persistence
      • Modifies visiblity of hidden/system files in Explorer
      • UAC bypass
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • System policy modification
      PID:2716

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\RCXE495.tmp

    Filesize

    3.1MB

    MD5

    ac514b7f272377ad36f233e0e2c2a08f

    SHA1

    79ab34745da9261e0d213b1190d16ab93f7d4802

    SHA256

    56cdc38e50cc6fadd4a8b4a35c3ec1adc956f00d3aeeb1b2decb3990bc3a5010

    SHA512

    24c323d7a199f3ed30531d6d93e0c25c5b6e2dbea84667963853e3fd9028786f647dac3d61b76b2b574016f556320e814e40008776488e6cd47a4dfab1225158

  • C:\Windows\wininit.exe

    Filesize

    3.1MB

    MD5

    b3e33c93cefc11619de42b3876063480

    SHA1

    7c5b487e67aa16aae375b107017a9b6b52547281

    SHA256

    e767398f9d479aaafbb817a8b3584be495e94efec64998afa9337c43ea71ddc0

    SHA512

    abe38e47abc4e9256791be87f659b0d0137fe2ebd21248a4d18da3994af65c1c0c2b690461b795c3a9bdf3b8303bb6d765390a2bd990ebc0ffeadbbe3b132729

  • memory/2708-0-0x0000000000230000-0x0000000000231000-memory.dmp

    Filesize

    4KB

  • memory/2708-40-0x0000000000400000-0x00000000007B5000-memory.dmp

    Filesize

    3.7MB

  • memory/2716-43-0x0000000000400000-0x00000000007B5000-memory.dmp

    Filesize

    3.7MB

  • memory/2716-53-0x0000000000400000-0x00000000007B5000-memory.dmp

    Filesize

    3.7MB

  • memory/2740-42-0x0000000000400000-0x00000000007B5000-memory.dmp

    Filesize

    3.7MB

  • memory/2740-52-0x0000000000400000-0x00000000007B5000-memory.dmp

    Filesize

    3.7MB