Analysis

  • max time kernel
    143s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/02/2025, 05:37

General

  • Target

    b1af6dc34bba3755b225d8f9dd732df86267dce73241c7aa65fdec1282251554.exe

  • Size

    1.1MB

  • MD5

    498fa48c532298d0b66573d5027bb134

  • SHA1

    d1987503ad04b7f9d102328ac407a261f297d226

  • SHA256

    b1af6dc34bba3755b225d8f9dd732df86267dce73241c7aa65fdec1282251554

  • SHA512

    ecc19e7a5334107c7913a2b9df93fcad4cc08c8067de3074827e9c78795961b6393c3fb2c8521b3e626ae155a31a4ea8539ec08bd091674d8e3c684451997bbd

  • SSDEEP

    24576:MjEmMWRNc7WxEgr1GsflpiWFsjq5c3SddFDykNTwdQG9ikZ:jmjRNQgEg5GsNpi4l5kSdzDPwZim

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
  • Drops file in Program Files directory 1 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\b1af6dc34bba3755b225d8f9dd732df86267dce73241c7aa65fdec1282251554.exe
    "C:\Users\Admin\AppData\Local\Temp\b1af6dc34bba3755b225d8f9dd732df86267dce73241c7aa65fdec1282251554.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:4972
    • C:\Users\Admin\AppData\Local\Temp\b1af6dc34bba3755b225d8f9dd732df86267dce73241c7aa65fdec1282251554.exe
      "C:\Users\Admin\AppData\Local\Temp\b1af6dc34bba3755b225d8f9dd732df86267dce73241c7aa65fdec1282251554.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:4564

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    11KB

    MD5

    ee260c45e97b62a5e42f17460d406068

    SHA1

    df35f6300a03c4d3d3bd69752574426296b78695

    SHA256

    e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27

    SHA512

    a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

  • memory/4564-31-0x00000000016E0000-0x0000000006CDB000-memory.dmp

    Filesize

    86.0MB

  • memory/4564-32-0x0000000077528000-0x0000000077529000-memory.dmp

    Filesize

    4KB

  • memory/4564-34-0x0000000077545000-0x0000000077546000-memory.dmp

    Filesize

    4KB

  • memory/4564-33-0x0000000000480000-0x00000000016D4000-memory.dmp

    Filesize

    18.3MB

  • memory/4564-47-0x0000000000480000-0x00000000016D4000-memory.dmp

    Filesize

    18.3MB

  • memory/4564-48-0x00000000774A1000-0x00000000775C1000-memory.dmp

    Filesize

    1.1MB

  • memory/4564-50-0x000000007239E000-0x000000007239F000-memory.dmp

    Filesize

    4KB

  • memory/4564-51-0x0000000000480000-0x00000000004E0000-memory.dmp

    Filesize

    384KB

  • memory/4564-49-0x00000000016E0000-0x0000000006CDB000-memory.dmp

    Filesize

    86.0MB

  • memory/4564-52-0x0000000072390000-0x0000000072B40000-memory.dmp

    Filesize

    7.7MB

  • memory/4564-53-0x0000000039B90000-0x0000000039C28000-memory.dmp

    Filesize

    608KB

  • memory/4564-61-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-54-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-77-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-111-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-113-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-109-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-107-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-105-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-103-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-101-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-99-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-97-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-95-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-93-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-89-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-87-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-85-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-83-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-81-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-80-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-75-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-73-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-71-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-69-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-67-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-65-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-63-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-59-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-57-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-56-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-91-0x0000000039B90000-0x0000000039C22000-memory.dmp

    Filesize

    584KB

  • memory/4564-2118-0x0000000037910000-0x000000003793C000-memory.dmp

    Filesize

    176KB

  • memory/4564-2119-0x0000000039CF0000-0x0000000039D3C000-memory.dmp

    Filesize

    304KB

  • memory/4564-2121-0x000000007239E000-0x000000007239F000-memory.dmp

    Filesize

    4KB

  • memory/4564-2122-0x0000000072390000-0x0000000072B40000-memory.dmp

    Filesize

    7.7MB

  • memory/4564-2123-0x0000000039F00000-0x0000000039FE0000-memory.dmp

    Filesize

    896KB

  • memory/4564-5149-0x000000003A020000-0x000000003A086000-memory.dmp

    Filesize

    408KB

  • memory/4564-5150-0x000000003A3F0000-0x000000003A994000-memory.dmp

    Filesize

    5.6MB

  • memory/4564-5151-0x000000003A150000-0x000000003A1E2000-memory.dmp

    Filesize

    584KB

  • memory/4564-5152-0x000000003AE10000-0x000000003AE22000-memory.dmp

    Filesize

    72KB

  • memory/4564-5153-0x000000003AE40000-0x000000003AE90000-memory.dmp

    Filesize

    320KB

  • memory/4564-5154-0x0000000072390000-0x0000000072B40000-memory.dmp

    Filesize

    7.7MB

  • memory/4564-5156-0x0000000072390000-0x0000000072B40000-memory.dmp

    Filesize

    7.7MB

  • memory/4972-28-0x00000000774A1000-0x00000000775C1000-memory.dmp

    Filesize

    1.1MB

  • memory/4972-29-0x00000000774A1000-0x00000000775C1000-memory.dmp

    Filesize

    1.1MB

  • memory/4972-30-0x0000000010004000-0x0000000010005000-memory.dmp

    Filesize

    4KB