Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-11-2024 13:29

General

  • Target

    69ed0a6930743edce0be39f74004f5879f884900bed231552a2cea310889bbef.exe

  • Size

    203KB

  • MD5

    5a73b24fdd56e4c1d85633b1af8599b0

  • SHA1

    09ad363d090775231d8d60481ff2a873e70c5f53

  • SHA256

    69ed0a6930743edce0be39f74004f5879f884900bed231552a2cea310889bbef

  • SHA512

    09019becf8e0ee6d4c1e1b7bff114658b1d61074624ad36542c9f5374f2ab22addd577cf7afaee8d8764c843d78b1954248380a2fcfd0aa98bb3c684447dbacd

  • SSDEEP

    3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkT:X2vnSwjaOcADw9cUeCOf

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in Program Files directory 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\69ed0a6930743edce0be39f74004f5879f884900bed231552a2cea310889bbef.exe
    "C:\Users\Admin\AppData\Local\Temp\69ed0a6930743edce0be39f74004f5879f884900bed231552a2cea310889bbef.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3372
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\bzcnmjk.exe "C:\Users\Admin\AppData\Local\Temp\69ed0a6930743edce0be39f74004f5879f884900bed231552a2cea310889bbef.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:2056
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:3968
      • C:\Users\Admin\AppData\Local\Temp\bzcnmjk.exe
        C:\Users\Admin\AppData\Local\Temp\\bzcnmjk.exe "C:\Users\Admin\AppData\Local\Temp\69ed0a6930743edce0be39f74004f5879f884900bed231552a2cea310889bbef.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3932
        • \??\c:\Program Files\sejzgqxc\claslc.exe
          "c:\Program Files\sejzgqxc\claslc.exe" "c:\Program Files\sejzgqxc\claslc.dll",Compliance C:\Users\Admin\AppData\Local\Temp\bzcnmjk.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Adds Run key to start application
          • Enumerates connected drives
          • Writes to the Master Boot Record (MBR)
          • System Location Discovery: System Language Discovery
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4248

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files\sejzgqxc\claslc.exe

    Filesize

    60KB

    MD5

    889b99c52a60dd49227c5e485a016679

    SHA1

    8fa889e456aa646a4d0a4349977430ce5fa5e2d7

    SHA256

    6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

    SHA512

    08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

  • C:\Users\Admin\AppData\Local\Temp\bzcnmjk.exe

    Filesize

    203KB

    MD5

    f7af38afec05506f06755ef0acc87541

    SHA1

    f58f9024dcac215304b753c875b84e65bdab656d

    SHA256

    d68f36ec4802a40b136cb903bb8637ab5930188d44dc412c3c4ea45add197f52

    SHA512

    56f6ebebca6fd15007bd807e7a22206ac9b8772ccf01463f6dbe24f9232335f80b5060694cdf7da069387dcd5a6206b80c84214aeb5b8f0718bcd256c47a3251

  • \??\c:\Program Files\sejzgqxc\claslc.dll

    Filesize

    141KB

    MD5

    bdd2a893eeb1a044474436240d6721fe

    SHA1

    1ef6c55ee753f53ceefc1f43f9b72abcee7ad9c2

    SHA256

    48d203684c4f16012af94e09b6f2a4b77674e9ab7b254f05beeff5489719caea

    SHA512

    8333ddda16206b5496164f02f36a5f075a28a5de0185cb2f8988ac351b2ee19eb49ab5944a91e912305e4dd7142cb017cdadb687e5685b879e0f62675b10b114

  • memory/3372-2-0x0000000000400000-0x000000000044901D-memory.dmp

    Filesize

    292KB

  • memory/3372-1-0x0000000000400000-0x000000000044901D-memory.dmp

    Filesize

    292KB

  • memory/3372-4-0x0000000000400000-0x000000000044901D-memory.dmp

    Filesize

    292KB

  • memory/3372-0-0x0000000000400000-0x000000000044901D-memory.dmp

    Filesize

    292KB

  • memory/3932-10-0x0000000000400000-0x000000000044901D-memory.dmp

    Filesize

    292KB

  • memory/3932-8-0x0000000000400000-0x000000000044901D-memory.dmp

    Filesize

    292KB

  • memory/3932-16-0x0000000000400000-0x000000000044901D-memory.dmp

    Filesize

    292KB

  • memory/3932-9-0x0000000000400000-0x000000000044901D-memory.dmp

    Filesize

    292KB

  • memory/4248-20-0x0000000010000000-0x000000001004E000-memory.dmp

    Filesize

    312KB

  • memory/4248-22-0x0000000010000000-0x000000001004E000-memory.dmp

    Filesize

    312KB

  • memory/4248-26-0x0000000010000000-0x000000001004E000-memory.dmp

    Filesize

    312KB