Analysis

  • max time kernel
    145s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/10/2022, 06:05

General

  • Target
    UTH.msi
  • Size 1.4MB
  • Sample221012-gs6vjacfg5
  • SHA256 e6c39cc0b7a7ad889fd345475f0b7d5ea740caba70bc4f57564e760e8a52f6ad
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Blocklisted process makes network request 4 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 9 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 48 IoCs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Drops file in Windows directory 16 IoCs
  • Modifies Internet Explorer settings 1 TTPs 45 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 58 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\UTH.msi
    1⤵
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:4212
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2840
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 2662550BFA2492AF5AEB75277297C048
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      PID:1732
    • C:\Windows\Installer\MSIE59B.tmp
      "C:\Windows\Installer\MSIE59B.tmp" /DontWait "C:\Users\Admin\AppData\Roaming\Comercialis\Documentos Objects\Homologo.exe"
      2⤵
      • Executes dropped EXE
      PID:3184
  • C:\Users\Admin\AppData\Roaming\Comercialis\Documentos Objects\Homologo.exe
    "C:\Users\Admin\AppData\Roaming\Comercialis\Documentos Objects\Homologo.exe"
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:372
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" %1 "https://bit.ly/3CvJZvd"
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:400
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:400 CREDAT:17410 /prefetch:2
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:3884

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
        • Size 471B
        • SHA256 63db191be3bdce3f969a6f457edaa2bf5c9ec863a311540d719ad80ca9ce4a19
        • MD5 SHA1 SHA512

        7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
        • Size 434B
        • SHA256 99ed78c1b819d34d056b4c4789d17c76051564db357fbf79af9ac6b2763fe716
        • MD5 SHA1 SHA512

        imagestore.dat

        • Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\ckj4gk4\imagestore.dat
        • Size 1KB
        • SHA256 a474b3f7cbe11a2810d22f1bbc05b6f01d89b3807638ba6f72ba9033bbdc3bf0
        • MD5 SHA1 SHA512

        Homologo.exe

        • Path C:\Users\Admin\AppData\Roaming\Comercialis\Documentos Objects\Homologo.exe
        • Size 474KB
        • SHA256 bd1af3dba56b129e6c624297eeed40c898fa2981fce5caafe467d88a748988a4
        • MD5 SHA1 SHA512 SSDEEP

        dbgeng.dll

        • Path C:\Users\Admin\AppData\Roaming\Comercialis\Documentos Objects\dbgeng.dll
        • Size 23.2MB
        • SHA256 604ee858da5ffab29bd02ab64a57fb7a89abc6b82e76b8d18230b6d7c607e9b1
        • MD5 SHA1 SHA512 SSDEEP

        dbgeng.dll

        • Path C:\Users\Admin\AppData\Roaming\Comercialis\Documentos Objects\dbgeng.dll
        • Size 23.2MB
        • SHA256 604ee858da5ffab29bd02ab64a57fb7a89abc6b82e76b8d18230b6d7c607e9b1
        • MD5 SHA1 SHA512 SSDEEP

        MSICC6D.tmp

        • Path C:\Windows\Installer\MSICC6D.tmp
        • Size 379KB
        • SHA256 f89c4313f2f4bc8654a7fa3697702e36688e8c2756df5ada209a7f3e3f1d906f
        • MD5 SHA1 SHA512 SSDEEP

        MSICC6D.tmp

        • Path C:\Windows\Installer\MSICC6D.tmp
        • Size 379KB
        • SHA256 f89c4313f2f4bc8654a7fa3697702e36688e8c2756df5ada209a7f3e3f1d906f
        • MD5 SHA1 SHA512 SSDEEP

        MSICEDF.tmp

        • Path C:\Windows\Installer\MSICEDF.tmp
        • Size 379KB
        • SHA256 f89c4313f2f4bc8654a7fa3697702e36688e8c2756df5ada209a7f3e3f1d906f
        • MD5 SHA1 SHA512 SSDEEP

        MSICEDF.tmp

        • Path C:\Windows\Installer\MSICEDF.tmp
        • Size 379KB
        • SHA256 f89c4313f2f4bc8654a7fa3697702e36688e8c2756df5ada209a7f3e3f1d906f
        • MD5 SHA1 SHA512 SSDEEP

        MSICF9B.tmp

        • Path C:\Windows\Installer\MSICF9B.tmp
        • Size 379KB
        • SHA256 f89c4313f2f4bc8654a7fa3697702e36688e8c2756df5ada209a7f3e3f1d906f
        • MD5 SHA1 SHA512 SSDEEP

        MSICF9B.tmp

        • Path C:\Windows\Installer\MSICF9B.tmp
        • Size 379KB
        • SHA256 f89c4313f2f4bc8654a7fa3697702e36688e8c2756df5ada209a7f3e3f1d906f
        • MD5 SHA1 SHA512 SSDEEP

        MSID00A.tmp

        • Path C:\Windows\Installer\MSID00A.tmp
        • Size 379KB
        • SHA256 f89c4313f2f4bc8654a7fa3697702e36688e8c2756df5ada209a7f3e3f1d906f
        • MD5 SHA1 SHA512 SSDEEP

        MSID00A.tmp

        • Path C:\Windows\Installer\MSID00A.tmp
        • Size 379KB
        • SHA256 f89c4313f2f4bc8654a7fa3697702e36688e8c2756df5ada209a7f3e3f1d906f
        • MD5 SHA1 SHA512 SSDEEP

        MSID377.tmp

        • Path C:\Windows\Installer\MSID377.tmp
        • Size 463KB
        • SHA256 c1c922e7b8addf20a1f8c01fb7333e4341e5bd43ea90b82025e4402cd016d3ed
        • MD5 SHA1 SHA512 SSDEEP

        MSID377.tmp

        • Path C:\Windows\Installer\MSID377.tmp
        • Size 463KB
        • SHA256 c1c922e7b8addf20a1f8c01fb7333e4341e5bd43ea90b82025e4402cd016d3ed
        • MD5 SHA1 SHA512 SSDEEP

        MSID423.tmp

        • Path C:\Windows\Installer\MSID423.tmp
        • Size 463KB
        • SHA256 c1c922e7b8addf20a1f8c01fb7333e4341e5bd43ea90b82025e4402cd016d3ed
        • MD5 SHA1 SHA512 SSDEEP

        MSID423.tmp

        • Path C:\Windows\Installer\MSID423.tmp
        • Size 463KB
        • SHA256 c1c922e7b8addf20a1f8c01fb7333e4341e5bd43ea90b82025e4402cd016d3ed
        • MD5 SHA1 SHA512 SSDEEP

        MSID4FF.tmp

        • Path C:\Windows\Installer\MSID4FF.tmp
        • Size 463KB
        • SHA256 c1c922e7b8addf20a1f8c01fb7333e4341e5bd43ea90b82025e4402cd016d3ed
        • MD5 SHA1 SHA512 SSDEEP

        MSID4FF.tmp

        • Path C:\Windows\Installer\MSID4FF.tmp
        • Size 463KB
        • SHA256 c1c922e7b8addf20a1f8c01fb7333e4341e5bd43ea90b82025e4402cd016d3ed
        • MD5 SHA1 SHA512 SSDEEP

        MSIE126.tmp

        • Path C:\Windows\Installer\MSIE126.tmp
        • Size 463KB
        • SHA256 c1c922e7b8addf20a1f8c01fb7333e4341e5bd43ea90b82025e4402cd016d3ed
        • MD5 SHA1 SHA512 SSDEEP

        MSIE126.tmp

        • Path C:\Windows\Installer\MSIE126.tmp
        • Size 463KB
        • SHA256 c1c922e7b8addf20a1f8c01fb7333e4341e5bd43ea90b82025e4402cd016d3ed
        • MD5 SHA1 SHA512 SSDEEP

        MSIE59B.tmp

        • Path C:\Windows\Installer\MSIE59B.tmp
        • Size 404KB
        • SHA256 55ad26c17f4aac71e6db6a6edee6ebf695510dc7e533e3fee64afc3eb06291e5
        • MD5 SHA1 SHA512 SSDEEP

        memory/372-154-0x0000000002E00000-0x0000000004473000-memory.dmp

        memory/372-155-0x0000000002E00000-0x0000000004473000-memory.dmp