Analysis

  • max time kernel
    95s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/02/2025, 02:52

General

  • Target

    4c4b1980eed21f43c792e2d1727b36c9a6cf04b7732250d4559ca4a2f341dda8.exe

  • Size

    614KB

  • MD5

    6b654cb879dd6171a27f49ede0640dd0

  • SHA1

    f3b604c42287475b70a3372ac271b083bf47d617

  • SHA256

    4c4b1980eed21f43c792e2d1727b36c9a6cf04b7732250d4559ca4a2f341dda8

  • SHA512

    e4dcd46b03554ebbcbbad4fc007e09ef051e455a3f2b8a1cde3d7dd25a505d5bf04dae5d14d96e2f1f67d18efebdf4d434f1ba7aed876b605805a18c30e2001a

  • SSDEEP

    12288:ZfZ6QaYTUyLt20YOlIlBEpR72as3pKbax5fUxg9V0ttHXbai1P4dXV:ZIdItdYOCBM7l+psax5Mxg6tWiR4/

Malware Config

Signatures

  • Guloader family
  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 1 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads user/profile data of web browsers 3 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 42 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 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 2 IoCs

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

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4c4b1980eed21f43c792e2d1727b36c9a6cf04b7732250d4559ca4a2f341dda8.exe
    "C:\Users\Admin\AppData\Local\Temp\4c4b1980eed21f43c792e2d1727b36c9a6cf04b7732250d4559ca4a2f341dda8.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2648
    • C:\Users\Admin\AppData\Local\Temp\4c4b1980eed21f43c792e2d1727b36c9a6cf04b7732250d4559ca4a2f341dda8.exe
      "C:\Users\Admin\AppData\Local\Temp\4c4b1980eed21f43c792e2d1727b36c9a6cf04b7732250d4559ca4a2f341dda8.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2516

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\inddatafunktions.ini

    Filesize

    37B

    MD5

    4fbe761fb296431fa2b2b2f1b2151773

    SHA1

    22b08baab25ba9367620747f559b8a9900d39f5e

    SHA256

    4e71a5b2c04ec9db74bb59e1ee2caa7a68d4a393f81ab3bac48226919fa35a5b

    SHA512

    822b45bc5c8745af9fb4abe43bc4ae74bf06cc24c8d9760cd0c619f5b5805a9cf46f1b1e0d1d082130573cc72c6f060232f117ac9e1544a84083fad197316a80

  • C:\Users\Admin\AppData\Local\Temp\nsi1A2B.tmp\System.dll

    Filesize

    11KB

    MD5

    75ed96254fbf894e42058062b4b4f0d1

    SHA1

    996503f1383b49021eb3427bc28d13b5bbd11977

    SHA256

    a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

    SHA512

    58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

  • memory/2516-33-0x00000000016F0000-0x0000000007339000-memory.dmp

    Filesize

    92.3MB

  • memory/2516-34-0x00000000778B8000-0x00000000778B9000-memory.dmp

    Filesize

    4KB

  • memory/2516-35-0x00000000778D5000-0x00000000778D6000-memory.dmp

    Filesize

    4KB

  • memory/2516-48-0x0000000000490000-0x00000000016E4000-memory.dmp

    Filesize

    18.3MB

  • memory/2516-49-0x0000000000490000-0x00000000016E4000-memory.dmp

    Filesize

    18.3MB

  • memory/2516-50-0x0000000077831000-0x0000000077951000-memory.dmp

    Filesize

    1.1MB

  • memory/2516-52-0x000000007272E000-0x000000007272F000-memory.dmp

    Filesize

    4KB

  • memory/2516-53-0x0000000000490000-0x00000000004F0000-memory.dmp

    Filesize

    384KB

  • memory/2516-51-0x00000000016F0000-0x0000000007339000-memory.dmp

    Filesize

    92.3MB

  • memory/2516-54-0x0000000039FA0000-0x000000003A038000-memory.dmp

    Filesize

    608KB

  • memory/2516-55-0x0000000072720000-0x0000000072ED0000-memory.dmp

    Filesize

    7.7MB

  • memory/2516-56-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-61-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-115-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-113-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-111-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-109-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-107-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-105-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-103-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-99-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-97-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-95-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-93-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-91-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-89-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-87-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-85-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-83-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-81-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-79-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-77-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-75-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-73-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-71-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-69-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-67-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-65-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-63-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-59-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-57-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-101-0x0000000039FA0000-0x000000003A032000-memory.dmp

    Filesize

    584KB

  • memory/2516-2120-0x0000000037960000-0x000000003798C000-memory.dmp

    Filesize

    176KB

  • memory/2516-2121-0x000000003A110000-0x000000003A15C000-memory.dmp

    Filesize

    304KB

  • memory/2516-2122-0x000000003A320000-0x000000003A400000-memory.dmp

    Filesize

    896KB

  • memory/2516-5148-0x000000007272E000-0x000000007272F000-memory.dmp

    Filesize

    4KB

  • memory/2516-5149-0x000000003A440000-0x000000003A4A6000-memory.dmp

    Filesize

    408KB

  • memory/2516-5150-0x0000000072720000-0x0000000072ED0000-memory.dmp

    Filesize

    7.7MB

  • memory/2516-5151-0x000000003A810000-0x000000003ADB4000-memory.dmp

    Filesize

    5.6MB

  • memory/2516-5152-0x000000003A570000-0x000000003A602000-memory.dmp

    Filesize

    584KB

  • memory/2516-5153-0x000000003AF60000-0x000000003AF72000-memory.dmp

    Filesize

    72KB

  • memory/2516-5154-0x000000003B220000-0x000000003B270000-memory.dmp

    Filesize

    320KB

  • memory/2516-5156-0x0000000072720000-0x0000000072ED0000-memory.dmp

    Filesize

    7.7MB

  • memory/2516-5159-0x0000000072720000-0x0000000072ED0000-memory.dmp

    Filesize

    7.7MB

  • memory/2648-30-0x0000000077831000-0x0000000077951000-memory.dmp

    Filesize

    1.1MB

  • memory/2648-31-0x0000000077831000-0x0000000077951000-memory.dmp

    Filesize

    1.1MB

  • memory/2648-32-0x0000000074D04000-0x0000000074D05000-memory.dmp

    Filesize

    4KB