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Analysis

  • max time kernel
    142s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/03/2023, 14:30

General

  • Target

    b7fe14058e8415478159dd459ea7e84eb9c0c9449cc51fbf2925bfa712f19c20.exe

  • Size

    2.7MB

  • MD5

    7f1afbb1f303fa7825609d870f970c75

  • SHA1

    fdc8eaa2258d1e385993b6c69b48685dc766de07

  • SHA256

    b7fe14058e8415478159dd459ea7e84eb9c0c9449cc51fbf2925bfa712f19c20

  • SHA512

    4ab6cbf7008aeaf06ee2c5214d8becfa152def1fa61823177506401404edd1da2ad0e92555a0d61d1b087c2f456b56a08f65e2969b0c807b9a0e0c05039167b4

  • SSDEEP

    49152:DmFGB6jgk0erMz6z7SNUbaHrzC+3FbbmxUZJmZjPS3KDBorqoyT/SVk:CFGB0gZmWOyu+VbbxrUPoKDBorq1SVk

Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • Modifies system certificate store 2 TTPs 10 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b7fe14058e8415478159dd459ea7e84eb9c0c9449cc51fbf2925bfa712f19c20.exe
    "C:\Users\Admin\AppData\Local\Temp\b7fe14058e8415478159dd459ea7e84eb9c0c9449cc51fbf2925bfa712f19c20.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Modifies system certificate store
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4580
    • C:\Users\Admin\AppData\Local\Temp\b7fe14058e8415478159dd459ea7e84eb9c0c9449cc51fbf2925bfa712f19c20.exe
      C:\Users\Admin\AppData\Local\Temp\b7fe14058e8415478159dd459ea7e84eb9c0c9449cc51fbf2925bfa712f19c20.exe --type=crashpad-handler /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Crash Reports" "--crash-count-file=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\crash_count.txt" --url=https://crashstats-collector.opera.com/collector/submit --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktop --annotation=ver=96.0.4693.31 --initial-client-data=0x2d8,0x2dc,0x2e0,0x2b4,0x2e4,0x74b724a8,0x74b724b8,0x74b724c4
      2⤵
      • Loads dropped DLL
      PID:1840
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\b7fe14058e8415478159dd459ea7e84eb9c0c9449cc51fbf2925bfa712f19c20.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\b7fe14058e8415478159dd459ea7e84eb9c0c9449cc51fbf2925bfa712f19c20.exe" --version
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:352
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202303211530251\assistant\_sfx.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202303211530251\assistant\_sfx.exe"
      2⤵
      • Executes dropped EXE
      PID:4976
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202303211530251\assistant\assistant_installer.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202303211530251\assistant\assistant_installer.exe" --version
      2⤵
      • Executes dropped EXE
      PID:4304
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202303211530251\assistant\assistant_installer.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202303211530251\assistant\assistant_installer.exe" --type=crashpad-handler /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Crash Reports" "--crash-count-file=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\crash_count.txt" --url=https://crashstats-collector.opera.com/collector/submit --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktop --annotation=ver=96.0.4693.50 --initial-client-data=0x26c,0x270,0x274,0x248,0x278,0x966c28,0x966c38,0x966c44
        3⤵
        • Executes dropped EXE
        PID:3408

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\b7fe14058e8415478159dd459ea7e84eb9c0c9449cc51fbf2925bfa712f19c20.exe

    Filesize

    2.7MB

    MD5

    7f1afbb1f303fa7825609d870f970c75

    SHA1

    fdc8eaa2258d1e385993b6c69b48685dc766de07

    SHA256

    b7fe14058e8415478159dd459ea7e84eb9c0c9449cc51fbf2925bfa712f19c20

    SHA512

    4ab6cbf7008aeaf06ee2c5214d8becfa152def1fa61823177506401404edd1da2ad0e92555a0d61d1b087c2f456b56a08f65e2969b0c807b9a0e0c05039167b4

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202303211530251\assistant\_sfx.exe

    Filesize

    1.7MB

    MD5

    b386cdcb413405daa8219af8e4cbd318

    SHA1

    ce275ff8514fef0629c915a6ee7b5ac481b9043d

    SHA256

    408ebcce07eb76963651b97f84255b67e5f0e7ff6869e9c0e5bab0082eafe66e

    SHA512

    91f6bf600e022a2a80c6b0a7b84fd5549804111447f66c4a30e768a589efc0702d02634a9ba23ce18c42701e42b440af0aa3396cc317fa733c2f90223b6db626

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202303211530251\assistant\_sfx.exe

    Filesize

    1.7MB

    MD5

    b386cdcb413405daa8219af8e4cbd318

    SHA1

    ce275ff8514fef0629c915a6ee7b5ac481b9043d

    SHA256

    408ebcce07eb76963651b97f84255b67e5f0e7ff6869e9c0e5bab0082eafe66e

    SHA512

    91f6bf600e022a2a80c6b0a7b84fd5549804111447f66c4a30e768a589efc0702d02634a9ba23ce18c42701e42b440af0aa3396cc317fa733c2f90223b6db626

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202303211530251\assistant\_sfx.exe

    Filesize

    1.7MB

    MD5

    b386cdcb413405daa8219af8e4cbd318

    SHA1

    ce275ff8514fef0629c915a6ee7b5ac481b9043d

    SHA256

    408ebcce07eb76963651b97f84255b67e5f0e7ff6869e9c0e5bab0082eafe66e

    SHA512

    91f6bf600e022a2a80c6b0a7b84fd5549804111447f66c4a30e768a589efc0702d02634a9ba23ce18c42701e42b440af0aa3396cc317fa733c2f90223b6db626

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202303211530251\assistant\assistant_installer.exe

    Filesize

    2.1MB

    MD5

    2f3d9e21e232b9bfea064d3b2264db06

    SHA1

    bafddc657d8d1bb531683b29b0342cc065ee51d2

    SHA256

    25528c314aed2b5391ca1d08c736a3807142aab21ae99d5970f2a862c8258d5d

    SHA512

    94e81aa3015b7e112bf772b52b2dd6092f5634746e201171b34b2493a62b08fbbf53a6d6c60c904c424c06e802aae6810c6dd88cf7a882846bc0a4793c3b32e5

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202303211530251\assistant\assistant_installer.exe

    Filesize

    2.1MB

    MD5

    2f3d9e21e232b9bfea064d3b2264db06

    SHA1

    bafddc657d8d1bb531683b29b0342cc065ee51d2

    SHA256

    25528c314aed2b5391ca1d08c736a3807142aab21ae99d5970f2a862c8258d5d

    SHA512

    94e81aa3015b7e112bf772b52b2dd6092f5634746e201171b34b2493a62b08fbbf53a6d6c60c904c424c06e802aae6810c6dd88cf7a882846bc0a4793c3b32e5

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202303211530251\opera_package

    Filesize

    87.9MB

    MD5

    c986c8f3ec1d6b1e960bb86773dd709d

    SHA1

    ade1122d90add9ba8135e7bd790fcb4a3fe28e36

    SHA256

    cf0f8d1fed7d35138bfa446c7fcdcd2da8bdef19fd8a886c03b8b9d7047cc394

    SHA512

    ab1541786b1efbc20dd6b5cebba4b483c0bf3939f92b0e90cf8c9e65bde873c8f82b420418e10d0f05e4f4586fd6a78ba9e5967c19347c26487ac602d9296714

  • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2303211530240474580.dll

    Filesize

    4.6MB

    MD5

    04eef8268bb425a0d549aa7333ec0e74

    SHA1

    4b0ccc737fa2716278c46fde8a62d37ce4be9528

    SHA256

    ebc55e14d85469e699e113a088c629fe04f21ce60ae3dd77b960018da0c83616

    SHA512

    683feb683688ac5b846ddfade4fbdba8ae999623d3717b5d0b0f92332d1276b78c720e5f6483dd952bdb8cfecf99689f660fd5d4b5b547f92414ad5525dee5e4

  • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2303211530245471840.dll

    Filesize

    4.6MB

    MD5

    04eef8268bb425a0d549aa7333ec0e74

    SHA1

    4b0ccc737fa2716278c46fde8a62d37ce4be9528

    SHA256

    ebc55e14d85469e699e113a088c629fe04f21ce60ae3dd77b960018da0c83616

    SHA512

    683feb683688ac5b846ddfade4fbdba8ae999623d3717b5d0b0f92332d1276b78c720e5f6483dd952bdb8cfecf99689f660fd5d4b5b547f92414ad5525dee5e4

  • C:\Users\Admin\AppData\Local\Temp\Opera_installer_230321153025172352.dll

    Filesize

    4.6MB

    MD5

    04eef8268bb425a0d549aa7333ec0e74

    SHA1

    4b0ccc737fa2716278c46fde8a62d37ce4be9528

    SHA256

    ebc55e14d85469e699e113a088c629fe04f21ce60ae3dd77b960018da0c83616

    SHA512

    683feb683688ac5b846ddfade4fbdba8ae999623d3717b5d0b0f92332d1276b78c720e5f6483dd952bdb8cfecf99689f660fd5d4b5b547f92414ad5525dee5e4

  • C:\Users\Admin\AppData\Local\Temp\Opera_installer_230321153025172352.dll

    Filesize

    4.6MB

    MD5

    04eef8268bb425a0d549aa7333ec0e74

    SHA1

    4b0ccc737fa2716278c46fde8a62d37ce4be9528

    SHA256

    ebc55e14d85469e699e113a088c629fe04f21ce60ae3dd77b960018da0c83616

    SHA512

    683feb683688ac5b846ddfade4fbdba8ae999623d3717b5d0b0f92332d1276b78c720e5f6483dd952bdb8cfecf99689f660fd5d4b5b547f92414ad5525dee5e4

  • memory/352-166-0x0000000000C60000-0x00000000011AA000-memory.dmp

    Filesize

    5.3MB

  • memory/352-153-0x0000000000C60000-0x00000000011AA000-memory.dmp

    Filesize

    5.3MB

  • memory/352-150-0x0000000000C60000-0x00000000011AA000-memory.dmp

    Filesize

    5.3MB

  • memory/1840-151-0x0000000000A00000-0x0000000000F4A000-memory.dmp

    Filesize

    5.3MB

  • memory/4304-217-0x0000000000E70000-0x0000000000F90000-memory.dmp

    Filesize

    1.1MB

  • memory/4580-136-0x0000000000A00000-0x0000000000F4A000-memory.dmp

    Filesize

    5.3MB