Analysis

  • max time kernel
    142s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-06-2024 06:39

General

  • Target

    a3c1b30df000e275363eda23ff50c6b680624a8ba2c8fa3b81d5c866c847b2f3.exe

  • Size

    3.2MB

  • MD5

    f50b46099b57064cce4e73143c9a06c6

  • SHA1

    2c8f6ac18e692b784be6c15ff966c564b6a6f622

  • SHA256

    a3c1b30df000e275363eda23ff50c6b680624a8ba2c8fa3b81d5c866c847b2f3

  • SHA512

    0542c161e09f69c47974f7a3f28a11bba2ec1c2f7ccd0d9a4a8cb7351ffd4280a797e97874832873d9fa571a2034bcc0dbfd9b97ac730538b0854396de843590

  • SSDEEP

    98304:O5iQ1Er5mkLLQ/ac5Bd0dvmcOmiurHZ9MfvkTRwJD:OqvLQP5BdihDv

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 7 IoCs

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

  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Modifies system certificate store 2 TTPs 11 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a3c1b30df000e275363eda23ff50c6b680624a8ba2c8fa3b81d5c866c847b2f3.exe
    "C:\Users\Admin\AppData\Local\Temp\a3c1b30df000e275363eda23ff50c6b680624a8ba2c8fa3b81d5c866c847b2f3.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Modifies system certificate store
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3516
    • C:\Users\Admin\AppData\Local\Temp\a3c1b30df000e275363eda23ff50c6b680624a8ba2c8fa3b81d5c866c847b2f3.exe
      C:\Users\Admin\AppData\Local\Temp\a3c1b30df000e275363eda23ff50c6b680624a8ba2c8fa3b81d5c866c847b2f3.exe --type=crashpad-handler /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Roaming\Opera Software\Opera GX Stable\Crash Reports" "--crash-count-file=C:\Users\Admin\AppData\Roaming\Opera Software\Opera GX Stable\crash_count.txt" --url=https://crashstats-collector.opera.com/collector/submit --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktopGX --annotation=ver=80.0.4170.86 --initial-client-data=0x2fc,0x300,0x304,0x2e4,0x308,0x7582e4f8,0x7582e508,0x7582e514
      2⤵
      • Loads dropped DLL
      PID:2236
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\a3c1b30df000e275363eda23ff50c6b680624a8ba2c8fa3b81d5c866c847b2f3.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\a3c1b30df000e275363eda23ff50c6b680624a8ba2c8fa3b81d5c866c847b2f3.exe" --version
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:1608
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202406120640021\assistant\_sfx.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202406120640021\assistant\_sfx.exe"
      2⤵
      • Executes dropped EXE
      PID:4808
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202406120640021\assistant\assistant_installer.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202406120640021\assistant\assistant_installer.exe" --version
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:412
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202406120640021\assistant\assistant_installer.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202406120640021\assistant\assistant_installer.exe" --type=crashpad-handler /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Roaming\Opera Software\Opera GX Stable\Crash Reports" "--crash-count-file=C:\Users\Admin\AppData\Roaming\Opera Software\Opera GX Stable\crash_count.txt" --url=https://crashstats-collector.opera.com/collector/submit --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktopGX --annotation=ver=73.0.3856.382 --initial-client-data=0x26c,0x270,0x274,0x250,0x278,0x734f48,0x734f58,0x734f64
        3⤵
        • Executes dropped EXE
        PID:1600
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4304,i,11749492925348081608,8895412282206755658,262144 --variations-seed-version --mojo-platform-channel-handle=1288 /prefetch:8
    1⤵
      PID:1680

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\a3c1b30df000e275363eda23ff50c6b680624a8ba2c8fa3b81d5c866c847b2f3.exe

      Filesize

      3.2MB

      MD5

      f50b46099b57064cce4e73143c9a06c6

      SHA1

      2c8f6ac18e692b784be6c15ff966c564b6a6f622

      SHA256

      a3c1b30df000e275363eda23ff50c6b680624a8ba2c8fa3b81d5c866c847b2f3

      SHA512

      0542c161e09f69c47974f7a3f28a11bba2ec1c2f7ccd0d9a4a8cb7351ffd4280a797e97874832873d9fa571a2034bcc0dbfd9b97ac730538b0854396de843590

    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202406120640021\assistant\_sfx.exe

      Filesize

      1.4MB

      MD5

      e9a2209b61f4be34f25069a6e54affea

      SHA1

      6368b0a81608c701b06b97aeff194ce88fd0e3c0

      SHA256

      e950f17f4181009eeafa9f5306e8a9dfd26d88ca63b1838f44ff0efc738e7d1f

      SHA512

      59e46277ca79a43ed8b0a25b24eff013e251a75f90587e013b9c12851e5dd7283b6172f7d48583982f6a32069457778ee440025c1c754bf7bb6ce8ae1d2c3fc5

    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202406120640021\assistant\assistant_installer.exe

      Filesize

      1.8MB

      MD5

      4c8fbed0044da34ad25f781c3d117a66

      SHA1

      8dd93340e3d09de993c3bc12db82680a8e69d653

      SHA256

      afe569ce9e4f71c23ba5f6e8fd32be62ac9538e397cde8f2ecbe46faa721242a

      SHA512

      a04e6fd052d2d63a0737c83702c66a9af834f9df8423666508c42b3e1d8384300239c9ddacdc31c1e85140eb1193bcfac209f218750b40342492ffce6e9da481

    • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2406120640012953516.dll

      Filesize

      4.5MB

      MD5

      46975d464d3da923ab0b9b6a1c5213bc

      SHA1

      5326c86889e67d5bdd07cf8078ceaf7c493367c4

      SHA256

      2ae655cfe1605382cc317225130d5789acb5bccc8f86d14e65e285c3d44b5661

      SHA512

      871fd3154130d86cd74e75e1c141de8ed9b49778ee28f54a66030ad0042deabd55f9eb0413d410c214bc10095bd22d3404e52e031b4c543a9ab02fe119eb6f2b

    • C:\Users\Admin\AppData\Roaming\Opera Software\Opera GX Stable\Crash Reports\settings.dat

      Filesize

      40B

      MD5

      cbf1b06ff201a02d2374cc2e48825851

      SHA1

      e68352210fe98e84e1509c25b4656d255db20a08

      SHA256

      2125d434c71f1624c4468b6c299696e494bf04284761bc5275ebacd2904c70b3

      SHA512

      9cfd00a0b0b2e70b377ce4805faf80e8387207564e30050aeb0c955cc178cc9bd99be47542e62c69b19b356e74d6ed33f23619fddc427c02221cc7025337e5e2

    • memory/1608-18-0x0000000000400000-0x00000000008F4000-memory.dmp

      Filesize

      5.0MB

    • memory/1608-21-0x0000000000400000-0x00000000008F4000-memory.dmp

      Filesize

      5.0MB

    • memory/2236-5-0x0000000000400000-0x00000000008F4000-memory.dmp

      Filesize

      5.0MB

    • memory/2236-50-0x0000000000400000-0x00000000008F4000-memory.dmp

      Filesize

      5.0MB

    • memory/3516-3-0x0000000000400000-0x00000000008F4000-memory.dmp

      Filesize

      5.0MB

    • memory/3516-49-0x0000000000400000-0x00000000008F4000-memory.dmp

      Filesize

      5.0MB