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Analysis

  • max time kernel
    50s
  • max time network
    128s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    04/02/2023, 03:58

General

  • Target

    OperaGXSetup.exe

  • Size

    3.4MB

  • MD5

    5a5fa99bc4eaaa6aa2824a8db83d513d

  • SHA1

    3e2ecbe54b99669c5f76b4030d9a8b1c2a20e8ef

  • SHA256

    a94938de21291917b26e8b4b5869a220d5eaf343d7dfefa618da7f431846b1d9

  • SHA512

    e9ce5b892d02071d23d44af0d28c54147a3704948588e1fcd25223d678ac12832ba47d33bb8b2b3828a42a7c9d934885424bdf67e1d308d4f6e54e38abff873f

  • SSDEEP

    98304:SCsF86gzedOMDfRSi/8cJGPxUtGGZD3XdB9RhQCUKVPaUolc5lkqqmtYUkmxmv:Sf85zIF1JGP6thQiVPXUZ

Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 4 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.

  • 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 12 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 35 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\OperaGXSetup.exe
    "C:\Users\Admin\AppData\Local\Temp\OperaGXSetup.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Modifies system certificate store
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1112
    • C:\Users\Admin\AppData\Local\Temp\OperaGXSetup.exe
      C:\Users\Admin\AppData\Local\Temp\OperaGXSetup.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=93.0.4585.72 --initial-client-data=0x194,0x198,0x19c,0x168,0x1a0,0x751576a0,0x751576b0,0x751576bc
      2⤵
      • Loads dropped DLL
      PID:1252
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\OperaGXSetup.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\OperaGXSetup.exe" --version
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:268
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202302040458591\assistant\_sfx.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202302040458591\assistant\_sfx.exe"
      2⤵
      • Executes dropped EXE
      PID:1564
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202302040458591\assistant\assistant_installer.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202302040458591\assistant\assistant_installer.exe" --version
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1448
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202302040458591\assistant\assistant_installer.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202302040458591\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=0x12c,0x130,0x134,0x100,0x138,0x1074f48,0x1074f58,0x1074f64
        3⤵
        • Executes dropped EXE
        PID:1320

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    3.4MB

    MD5

    5a5fa99bc4eaaa6aa2824a8db83d513d

    SHA1

    3e2ecbe54b99669c5f76b4030d9a8b1c2a20e8ef

    SHA256

    a94938de21291917b26e8b4b5869a220d5eaf343d7dfefa618da7f431846b1d9

    SHA512

    e9ce5b892d02071d23d44af0d28c54147a3704948588e1fcd25223d678ac12832ba47d33bb8b2b3828a42a7c9d934885424bdf67e1d308d4f6e54e38abff873f

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202302040458591\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_202302040458591\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_202302040458591\assistant\assistant_installer.exe

    Filesize

    1.8MB

    MD5

    4c8fbed0044da34ad25f781c3d117a66

    SHA1

    8dd93340e3d09de993c3bc12db82680a8e69d653

    SHA256

    afe569ce9e4f71c23ba5f6e8fd32be62ac9538e397cde8f2ecbe46faa721242a

    SHA512

    a04e6fd052d2d63a0737c83702c66a9af834f9df8423666508c42b3e1d8384300239c9ddacdc31c1e85140eb1193bcfac209f218750b40342492ffce6e9da481

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202302040458591\assistant\assistant_installer.exe

    Filesize

    1.8MB

    MD5

    4c8fbed0044da34ad25f781c3d117a66

    SHA1

    8dd93340e3d09de993c3bc12db82680a8e69d653

    SHA256

    afe569ce9e4f71c23ba5f6e8fd32be62ac9538e397cde8f2ecbe46faa721242a

    SHA512

    a04e6fd052d2d63a0737c83702c66a9af834f9df8423666508c42b3e1d8384300239c9ddacdc31c1e85140eb1193bcfac209f218750b40342492ffce6e9da481

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202302040458591\assistant\assistant_installer.exe

    Filesize

    1.8MB

    MD5

    4c8fbed0044da34ad25f781c3d117a66

    SHA1

    8dd93340e3d09de993c3bc12db82680a8e69d653

    SHA256

    afe569ce9e4f71c23ba5f6e8fd32be62ac9538e397cde8f2ecbe46faa721242a

    SHA512

    a04e6fd052d2d63a0737c83702c66a9af834f9df8423666508c42b3e1d8384300239c9ddacdc31c1e85140eb1193bcfac209f218750b40342492ffce6e9da481

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

    Filesize

    40B

    MD5

    70d7a2f9a73b1988d8c10aa7ac204e00

    SHA1

    67f47d85926f5a68e749d8e614ede74997fb2970

    SHA256

    06465843b0ca1a867c9d042f26244c8d6e2d5b5d65d7c904f1ad5804358a8a65

    SHA512

    9a2f4252d08e5637f95f1a775dd030cc8010f3c0b92b305ccd2d7be2586e5c6be90ca785ae137f210bfa91ef7f5fa08a99798d7597adbf53b186d762aee7e9ed

  • \Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\OperaGXSetup.exe

    Filesize

    3.4MB

    MD5

    5a5fa99bc4eaaa6aa2824a8db83d513d

    SHA1

    3e2ecbe54b99669c5f76b4030d9a8b1c2a20e8ef

    SHA256

    a94938de21291917b26e8b4b5869a220d5eaf343d7dfefa618da7f431846b1d9

    SHA512

    e9ce5b892d02071d23d44af0d28c54147a3704948588e1fcd25223d678ac12832ba47d33bb8b2b3828a42a7c9d934885424bdf67e1d308d4f6e54e38abff873f

  • \Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202302040458591\assistant\_sfx.exe

    Filesize

    1.4MB

    MD5

    e9a2209b61f4be34f25069a6e54affea

    SHA1

    6368b0a81608c701b06b97aeff194ce88fd0e3c0

    SHA256

    e950f17f4181009eeafa9f5306e8a9dfd26d88ca63b1838f44ff0efc738e7d1f

    SHA512

    59e46277ca79a43ed8b0a25b24eff013e251a75f90587e013b9c12851e5dd7283b6172f7d48583982f6a32069457778ee440025c1c754bf7bb6ce8ae1d2c3fc5

  • \Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202302040458591\assistant\assistant_installer.exe

    Filesize

    1.8MB

    MD5

    4c8fbed0044da34ad25f781c3d117a66

    SHA1

    8dd93340e3d09de993c3bc12db82680a8e69d653

    SHA256

    afe569ce9e4f71c23ba5f6e8fd32be62ac9538e397cde8f2ecbe46faa721242a

    SHA512

    a04e6fd052d2d63a0737c83702c66a9af834f9df8423666508c42b3e1d8384300239c9ddacdc31c1e85140eb1193bcfac209f218750b40342492ffce6e9da481

  • \Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202302040458591\assistant\assistant_installer.exe

    Filesize

    1.8MB

    MD5

    4c8fbed0044da34ad25f781c3d117a66

    SHA1

    8dd93340e3d09de993c3bc12db82680a8e69d653

    SHA256

    afe569ce9e4f71c23ba5f6e8fd32be62ac9538e397cde8f2ecbe46faa721242a

    SHA512

    a04e6fd052d2d63a0737c83702c66a9af834f9df8423666508c42b3e1d8384300239c9ddacdc31c1e85140eb1193bcfac209f218750b40342492ffce6e9da481

  • \Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202302040458591\opera_package

    Filesize

    118.1MB

    MD5

    4c6d99528eb9cf0ec91bd180ed6ce8aa

    SHA1

    caf7046f286bf48612897cc8046b28991e45334d

    SHA256

    09bf12637a4107a46674c6ea9efa87348b80f15f74d21dcac3f6bd309248fb09

    SHA512

    dee5dfd4d7aa6c12f48ec5c35882db8b987ae4664129b3584e7242e6fe7dc590586c726ad748bd49b5914ffd7603f832fd189a6f4706ea4d4d575275561dd32a

  • \Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202302040458591\opera_package

    Filesize

    118.1MB

    MD5

    4c6d99528eb9cf0ec91bd180ed6ce8aa

    SHA1

    caf7046f286bf48612897cc8046b28991e45334d

    SHA256

    09bf12637a4107a46674c6ea9efa87348b80f15f74d21dcac3f6bd309248fb09

    SHA512

    dee5dfd4d7aa6c12f48ec5c35882db8b987ae4664129b3584e7242e6fe7dc590586c726ad748bd49b5914ffd7603f832fd189a6f4706ea4d4d575275561dd32a

  • \Users\Admin\AppData\Local\Temp\Opera_installer_2302040458584641112.dll

    Filesize

    5.0MB

    MD5

    3175b655105f9a71e70477c0b572c8f0

    SHA1

    5daa4e755790acfe5f9a2543289aa91fec29e45d

    SHA256

    88a4f9e75779de51ee4b0a4144b3dde46843a738cec1b00baec98cdc2519e13a

    SHA512

    fe8c06ee34bb4aaf4491789d86cacd00e58026d9c76fc360b5585423d3bf38c6b25b14a22e2124ec8ca2ae5fb219a3388b529a98c28345b9f984f27777efdc8f

  • \Users\Admin\AppData\Local\Temp\Opera_installer_2302040458590181252.dll

    Filesize

    5.0MB

    MD5

    3175b655105f9a71e70477c0b572c8f0

    SHA1

    5daa4e755790acfe5f9a2543289aa91fec29e45d

    SHA256

    88a4f9e75779de51ee4b0a4144b3dde46843a738cec1b00baec98cdc2519e13a

    SHA512

    fe8c06ee34bb4aaf4491789d86cacd00e58026d9c76fc360b5585423d3bf38c6b25b14a22e2124ec8ca2ae5fb219a3388b529a98c28345b9f984f27777efdc8f

  • \Users\Admin\AppData\Local\Temp\Opera_installer_230204045859611268.dll

    Filesize

    5.0MB

    MD5

    3175b655105f9a71e70477c0b572c8f0

    SHA1

    5daa4e755790acfe5f9a2543289aa91fec29e45d

    SHA256

    88a4f9e75779de51ee4b0a4144b3dde46843a738cec1b00baec98cdc2519e13a

    SHA512

    fe8c06ee34bb4aaf4491789d86cacd00e58026d9c76fc360b5585423d3bf38c6b25b14a22e2124ec8ca2ae5fb219a3388b529a98c28345b9f984f27777efdc8f

  • memory/268-65-0x0000000000400000-0x00000000009A5000-memory.dmp

    Filesize

    5.6MB

  • memory/1112-69-0x0000000002950000-0x0000000002EF5000-memory.dmp

    Filesize

    5.6MB

  • memory/1112-68-0x00000000031E0000-0x0000000003785000-memory.dmp

    Filesize

    5.6MB

  • memory/1112-66-0x0000000002950000-0x0000000002EF5000-memory.dmp

    Filesize

    5.6MB

  • memory/1112-64-0x0000000000400000-0x00000000009A5000-memory.dmp

    Filesize

    5.6MB

  • memory/1112-70-0x00000000031E0000-0x0000000003785000-memory.dmp

    Filesize

    5.6MB

  • memory/1112-55-0x00000000760D1000-0x00000000760D3000-memory.dmp

    Filesize

    8KB

  • memory/1252-67-0x0000000000400000-0x00000000009A5000-memory.dmp

    Filesize

    5.6MB