Analysis

  • max time kernel
    138s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/09/2024, 01:25

General

  • Target

    05fa3e8b4a6a7fe0202b56c283b1f9135f1fb36423cef5d949967a31ff48beaf.exe

  • Size

    2.0MB

  • MD5

    49c113c0388efa2dd4bc693bfe779c6d

  • SHA1

    16dc24b6bf0a2311586e8ac0697983e4288441cf

  • SHA256

    05fa3e8b4a6a7fe0202b56c283b1f9135f1fb36423cef5d949967a31ff48beaf

  • SHA512

    e167734e2e1c9e4d874a58a9977d9030530365859bf222b81ca7cf4ab97bf0da0d957224cca40e490b98b7b60a4843ff0df27afdd59f14937ed3db5d9c3f6c80

  • SSDEEP

    49152:dVAbwLvWVtw64YdUZBg+/yOaLCCxSwsgsO9evVO8AnrZ4EoedMij:7A4vLYK8MaBxSMcRAmEoe+K

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 7 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\05fa3e8b4a6a7fe0202b56c283b1f9135f1fb36423cef5d949967a31ff48beaf.exe
    "C:\Users\Admin\AppData\Local\Temp\05fa3e8b4a6a7fe0202b56c283b1f9135f1fb36423cef5d949967a31ff48beaf.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:880
    • C:\Users\Admin\AppData\Local\Temp\7zS073857A7\setup.exe
      C:\Users\Admin\AppData\Local\Temp\7zS073857A7\setup.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2296
      • C:\Users\Admin\AppData\Local\Temp\7zS073857A7\setup.exe
        C:\Users\Admin\AppData\Local\Temp\7zS073857A7\setup.exe --type=crashpad-handler /prefetch:4 --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-2.opera.com/ --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktop --annotation=ver=113.0.5230.47 --initial-client-data=0x32c,0x330,0x334,0x300,0x338,0x7462ae8c,0x7462ae98,0x7462aea4
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:652
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\setup.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\setup.exe" --version
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2080
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202409010125111\assistant\Assistant_113.0.5230.31_Setup.exe_sfx.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202409010125111\assistant\Assistant_113.0.5230.31_Setup.exe_sfx.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1736
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202409010125111\assistant\assistant_installer.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202409010125111\assistant\assistant_installer.exe" --version
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4600
        • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202409010125111\assistant\assistant_installer.exe
          "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202409010125111\assistant\assistant_installer.exe" --type=crashpad-handler /prefetch:4 --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-2.opera.com/ --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktop --annotation=ver=113.0.5230.31 --initial-client-data=0x220,0x224,0x228,0x1fc,0x22c,0x822c48,0x822c54,0x822c60
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          PID:4672

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202409010125111\additional_file0.tmp

    Filesize

    2.6MB

    MD5

    0995a010e2f8b866c6abca90fa49130f

    SHA1

    f282871f9d6333f5bcc738062613c44567a58dc0

    SHA256

    74d4c26b0ee35a7431944e51aaf5ec4ab3338b6776bf44bdfdbc1e201b4fea76

    SHA512

    b98e4bd252a9bdb11a7f15c795910daabdbe8e0ba0fa86a5ee6f8167ff66a9b67790c51f700666239781ad46241926590588b6831d16e5057dcbfebe37c3ae6b

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202409010125111\assistant\assistant_installer.exe

    Filesize

    1.9MB

    MD5

    1d980ac7aa07def69627a334168853f9

    SHA1

    c4b6a91eb61eb1a946b922ceef9aea86dde79eb5

    SHA256

    a08d4c13a57600c280d10aa2d0c5c13352638b6ac38651aa908af1c0ec351807

    SHA512

    e8f7afb5299d627d67f6656f71006f60c1dbaa535175ff935d2934197e2ed5faca0f9d64897695965deeeea7612a4229bf117a8243a3b5de902a001d4e91797b

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202409010125111\assistant\dbgcore.dll

    Filesize

    166KB

    MD5

    98d373f7e891c8282b7a163880ffff55

    SHA1

    a84b5607aebd38833a96ee46b33f2d1b748e6ea0

    SHA256

    67bce323f46300c83866e02b1a3923b93834e30741999b965b351531073e8f2b

    SHA512

    b417629c5276ed942578273af5d2de4ab35fdb1cec102b47999b0b54d50c98d0ec36e8fca01db8c6f9fc4dc6aa130fef916fe07d131586c84f4a75bb589bb927

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202409010125111\assistant\dbghelp.dll

    Filesize

    1.7MB

    MD5

    49c70bed12c523235e2e154326b1a8f0

    SHA1

    4a011c6909ea9c08357dd4bebdd62f8b3bfab8dd

    SHA256

    27251f799e2d950c561fda99c07ff49553c1d538ccd544bcd1ee12820eed5cd5

    SHA512

    1553f9ddbb95603d82c01668320a128766ba8b039ee127f86a2008de222e9390b4d8b7153443444790c946b40742b85625fbc422e81073a353e9e434cc56eba3

  • C:\Users\Admin\AppData\Local\Temp\7zS073857A7\setup.exe

    Filesize

    5.1MB

    MD5

    2ee08ef3d5fb0525ba6277a8fef18c7e

    SHA1

    bfc0066fff086903ad75ce4a8508efcae7b71612

    SHA256

    84f0d1cae62f60d50db85a2604fe8401e4ac87ca94d4cb0a5ad7f518ee8efb68

    SHA512

    7847d2fae0b5907dbf1025ec495b0e0c5d96acea73d149d9d1b5715b7a02858a68e0c7352b6ab7abe6a4c1060ce930aa759dc7a49d36c7a807442b880012e179

  • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2409010125111732296.dll

    Filesize

    4.6MB

    MD5

    24a7e7b33088bcf40852a8d3628b8d3d

    SHA1

    a9edfb53f05f5a7228c8b2f52824f1d26d3b4eab

    SHA256

    514c484ed37798c552ec42204fec10b9eedb855e3916cdfa248f1af2f4dac832

    SHA512

    3f48fb02ecaa1869c886e114e4141fa578795f6ae45ca30a88245725fc921ff5453a0ee9a5c905431f4c7f8d45b8d0a9fddb8f39f6ccb0ea4978442400fae7ae

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

    Filesize

    40B

    MD5

    b8e5681b8d180ea003e4d935a27eaaca

    SHA1

    2f779512025226395cbd3d4f0adcdf299d87d5a7

    SHA256

    1388be1874ee7ade2122fe8941bb41c64c08bedcc92c9048cd263f6b9113e248

    SHA512

    577adbb3c0cc7fd05ba94b22c05031dc0e3a32748261caec9ac85ae578af20b4f6cbf12a5f3fdbac854bd1b0bf0981ee562ec576d9484ac948360376dc9ab77f