Overview

overview

8

Static

static

3

c1b9e19e0c...2a.exe

windows7-x64

8

c1b9e19e0c...2a.exe

windows10-2004-x64

8

Analysis

  • max time kernel
    149s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-05-2024 09:39

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General

  • Target

    c1b9e19e0ca146915cff2f4a20128086f3231b2c9ae00a84fa7ac5b6ade5292a.exe

  • Size

    405KB

  • MD5

    0394af17c2d83a5d35706b16e75b1613

  • SHA1

    02c62250a478795b2860a01eabb9f03e28dc7a70

  • SHA256

    c1b9e19e0ca146915cff2f4a20128086f3231b2c9ae00a84fa7ac5b6ade5292a

  • SHA512

    031fddf91cd79227c5af8d175421a05b12472bd2b735938898add85ae37271683cc46766eef7b18c30b00d1d5ea092a0ce69b935bd5c8effe5e1476bc92d5a68

  • SSDEEP

    6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4q:gtRfJcNYFNm8UhlZGseq

Score
8/10
bootkitpersistencespywarestealer

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 2 TTPs

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

    spywarestealer
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • 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.

    bootkitpersistence
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • 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 64 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\c1b9e19e0ca146915cff2f4a20128086f3231b2c9ae00a84fa7ac5b6ade5292a.exe
    "C:\Users\Admin\AppData\Local\Temp\c1b9e19e0ca146915cff2f4a20128086f3231b2c9ae00a84fa7ac5b6ade5292a.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2004
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ykrid.exe "C:\Users\Admin\AppData\Local\Temp\c1b9e19e0ca146915cff2f4a20128086f3231b2c9ae00a84fa7ac5b6ade5292a.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1336
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • Runs ping.exe
        PID:4788
      • C:\Users\Admin\AppData\Local\Temp\ykrid.exe
        C:\Users\Admin\AppData\Local\Temp\\ykrid.exe "C:\Users\Admin\AppData\Local\Temp\c1b9e19e0ca146915cff2f4a20128086f3231b2c9ae00a84fa7ac5b6ade5292a.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4932
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\Program Files\puwor\cagguwig.dll",Verify C:\Users\Admin\AppData\Local\Temp\ykrid.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)
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:5084

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\ykrid.exe
    Filesize

    405KB

    MD5

    597cf0f1b280fbcedd80f1c15c759e7b

    SHA1

    a253502aa729b91a84d5482cb1b8a3d8233dd3b1

    SHA256

    cd7f73230e1d26ac2144696c41b1b04c745138146633727548fa0df9b6f21e64

    SHA512

    d8634ab9f59ce170b56fa7999837519988c2914b4f0967c6f570bc8ad2b4e28984123895aa56ee50a78c4bab4f40fbf7002d8552496d0d02fc8276a49c1fa4ed

    Download Submit

  • \??\c:\Program Files\puwor\cagguwig.dll
    Filesize

    228KB

    MD5

    b6f1db6ad116159ec33aca83d3eb7498

    SHA1

    021ad2d12790add399cfa975edc7ea5c6d472186

    SHA256

    959be98a98bdedda5b5928ab2729e039b27d644692b4369d83428b2fbfa0d9aa

    SHA512

    d411d0513093459b44a35d43efe312d438ebe56b53bde7f126e1ed401502f607aa85b2737f3b057d4bb5701443cc019d5249dbe866cbd8be4c28a24786a8cffd

    Download Submit

  • memory/2004-0-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

    Download

  • memory/2004-2-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

    Download

  • memory/4932-6-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

    Download

  • memory/4932-8-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

    Download

  • memory/5084-11-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

    Download

  • memory/5084-12-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

    Download

  • memory/5084-14-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

    Download