Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-11-2024 18:23

General

  • Target

    4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363N.exe

  • Size

    156KB

  • MD5

    f1e30b5c56068a829be80ab57f0f1090

  • SHA1

    34d616a76a1b9d96d1a48b27424a77c6701b4c80

  • SHA256

    4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363

  • SHA512

    26070e1e45f6be2bf4617bc226e4b5e1b72aa68f939fbdbfa7616424d8e2dc6bdf870e3b204be726dab1e8b1b74250ccb77fefc4a7a6e934d3a264146b01609b

  • SSDEEP

    1536:+fxvtgixq7OstjzjW6ZdjtETzR77i11GAbRp0BGiEA0O0o1n:+HIa6KTdNAbzSGiN0OJ

Malware Config

Signatures

  • Blocklisted process makes network request 8 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 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.

  • 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\4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363N.exe
    "C:\Users\Admin\AppData\Local\Temp\4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363N.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:900
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&c:\swyxl.exe "C:\Users\Admin\AppData\Local\Temp\4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363N.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:3888
      • 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:468
      • \??\c:\swyxl.exe
        c:\swyxl.exe "C:\Users\Admin\AppData\Local\Temp\4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363N.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1996
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\mjkczeb\infmjdn.dll",GetWindowClass c:\swyxl.exe
          4⤵
          • Blocklisted process makes network request
          • 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:5020

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\swyxl.exe

    Filesize

    156KB

    MD5

    689ab57d641054d7d85554d930b272b0

    SHA1

    be430d723d7e9e61668055e12dfd00716ed8b774

    SHA256

    f779e5ba961278c4c63028e72d90addd425d224f8139e28a28f5b7248ae83ec2

    SHA512

    1e78e42a98584935169d7ba943745c89851f8df84a53d1b36f9a0f5b3bea839d3af5eeef1cd7704ae6b9a962a287ba89c6e971f149f2fcebf504d86730c093fd

  • \??\c:\mjkczeb\infmjdn.dll

    Filesize

    63KB

    MD5

    bec93912524f50c6f7c943716c7ef02b

    SHA1

    69ba8f1dd5a7d6cd94d688c691406cbd54be4486

    SHA256

    032570414587af2303431e8db5d5f4223e0147f4b63a2160b97d9a6ea531bd81

    SHA512

    41fb8970e9007c789227740e81a483bda806470ce25476589a3dfceddaaa60b20d890c37b56f8be83defb2a5b774dbd6c2026fc259884e8acf2971b06041f6a6

  • memory/900-0-0x0000000000400000-0x0000000000425400-memory.dmp

    Filesize

    149KB

  • memory/900-3-0x0000000000400000-0x0000000000425400-memory.dmp

    Filesize

    149KB

  • memory/1996-9-0x0000000000400000-0x0000000000425400-memory.dmp

    Filesize

    149KB

  • memory/5020-13-0x0000000000CD0000-0x0000000000CD2000-memory.dmp

    Filesize

    8KB

  • memory/5020-12-0x0000000010000000-0x0000000010036000-memory.dmp

    Filesize

    216KB

  • memory/5020-14-0x0000000010000000-0x0000000010036000-memory.dmp

    Filesize

    216KB

  • memory/5020-15-0x0000000000CD0000-0x0000000000CD2000-memory.dmp

    Filesize

    8KB

  • memory/5020-17-0x0000000010000000-0x0000000010036000-memory.dmp

    Filesize

    216KB

  • memory/5020-18-0x0000000010000000-0x0000000010036000-memory.dmp

    Filesize

    216KB

  • memory/5020-19-0x0000000010000000-0x0000000010036000-memory.dmp

    Filesize

    216KB

  • memory/5020-20-0x0000000010000000-0x0000000010036000-memory.dmp

    Filesize

    216KB