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Analysis

  • max time kernel
    84s
  • max time network
    113s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/08/2024, 20:59

General

  • Target

    3240d99b655ea967a64bbe3657d2ad90N.exe

  • Size

    5.1MB

  • MD5

    3240d99b655ea967a64bbe3657d2ad90

  • SHA1

    5ea87434f12af914adc0fdf2297727a5f69c0349

  • SHA256

    0ce4f047902c10388381f60a567b4bcf633adb45975724c0dbe8ee745d7cfa9f

  • SHA512

    db9611afe1bb91906a0aac5288c786039efa428973fd8d3df15ff285c54dda65aab20f577e68ac78e63fc809f01ee7af8cae5c23eace083bcd51fa73129d3c17

  • SSDEEP

    98304:v0NFI6666666666666666666666666666666x666666666666666fwwwwwwwwww4:dPMki6zio75L3pf3dedO4keCIwkoYbgY

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 4 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 6 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 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3240d99b655ea967a64bbe3657d2ad90N.exe
    "C:\Users\Admin\AppData\Local\Temp\3240d99b655ea967a64bbe3657d2ad90N.exe"
    1⤵
    • 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:2492
    • C:\Users\Admin\AppData\Local\Temp\3240d99b655ea967a64bbe3657d2ad90N.exe
      C:\Users\Admin\AppData\Local\Temp\3240d99b655ea967a64bbe3657d2ad90N.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.opera.com/collector/submit --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktop --annotation=ver=109.0.5097.68 --initial-client-data=0x2ac,0x2b0,0x2b4,0x260,0x2b8,0x7505e1d0,0x7505e1dc,0x7505e1e8
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:3128
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\3240d99b655ea967a64bbe3657d2ad90N.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\3240d99b655ea967a64bbe3657d2ad90N.exe" --version
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:3112
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408222059491\assistant\Assistant_112.0.5197.30_Setup.exe_sfx.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408222059491\assistant\Assistant_112.0.5197.30_Setup.exe_sfx.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1928
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408222059491\assistant\assistant_installer.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408222059491\assistant\assistant_installer.exe" --version
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3624
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408222059491\assistant\assistant_installer.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408222059491\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.opera.com/collector/submit --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktop --annotation=ver=112.0.5197.30 --initial-client-data=0x220,0x224,0x228,0x1fc,0x22c,0xd48f40,0xd48f4c,0xd48f58
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1540

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\3240d99b655ea967a64bbe3657d2ad90N.exe

    Filesize

    5.1MB

    MD5

    3240d99b655ea967a64bbe3657d2ad90

    SHA1

    5ea87434f12af914adc0fdf2297727a5f69c0349

    SHA256

    0ce4f047902c10388381f60a567b4bcf633adb45975724c0dbe8ee745d7cfa9f

    SHA512

    db9611afe1bb91906a0aac5288c786039efa428973fd8d3df15ff285c54dda65aab20f577e68ac78e63fc809f01ee7af8cae5c23eace083bcd51fa73129d3c17

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408222059491\additional_file0.tmp

    Filesize

    2.6MB

    MD5

    1bf64fd766bd850bcf8e0ffa9093484b

    SHA1

    01524bb2c88b7066391da291ee474004a4904891

    SHA256

    58794b1bf4d84bd7566ee89fd8a8a4157dc70c598d229ec5101959f30b6f3491

    SHA512

    cdf2830edc5d4f30beae41591f3a1bcff820f75444d70338a4c6d36e10df43475f383a9f291b619a008452c53e0dddf65547f217386389000535d6d264854e7f

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408222059491\assistant\assistant_installer.exe

    Filesize

    1.9MB

    MD5

    9afe96db501220cf42b262fdac954dc8

    SHA1

    d3471998f674b267256e72a30977a79abcd8fca9

    SHA256

    fc5608bf95bb02e889aa9be15abc5c066acd62ba07f886b323383e75909a2566

    SHA512

    ecff52ca7467e3948faa244c1fc7c3d4d1f1dbe74077d071b78147729a078cc6a676212e0606111edcf542d554045c4f5a4d502545b2f0a285cda6c5d0b69b27

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408222059491\assistant\dbgcore.DLL

    Filesize

    166KB

    MD5

    e0274730d20eb9571d59f2da20d165a2

    SHA1

    b746aeca5f7cbee0de163309c9d207c94f9b8d64

    SHA256

    c5c4c6430bcfe6118a4f499c94afa460401e369dc548a24688532c95fd202ec5

    SHA512

    d95998b69e6c3d25037e12e038f2773960de2d18df1af0342fd805c7c349bd630a21d0e0fe7490baaf274e90781ebf6a2667e64593f9d91174d040bfe640bddf

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408222059491\assistant\dbghelp.dll

    Filesize

    1.7MB

    MD5

    6e9976cc7b2def7a37106703e47626a5

    SHA1

    edcb4758f8ee56e9c6515f912d5024aeca9ead50

    SHA256

    fd8840fab4b61db4e9e09168e5b1b4f0e9bfea0a64482fd475ab63c712b92b9c

    SHA512

    27091e6ad001dac22897a295806925e02f693096d79667e587de74ca955ffb9b2773b22c83e306e7164862524e02ad028e68684c2ca7d9e4da1ff03787dd40ca

  • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2408222059493962492.dll

    Filesize

    4.6MB

    MD5

    45fe60d943ad11601067bc2840cc01be

    SHA1

    911d70a6aad7c10b52789c0312c5528556a2d609

    SHA256

    0715f9558363b04526499fcd6abf0b1946950af0a7f046a25f06b20dddb67add

    SHA512

    30c82f6b329fefa5f09a5974c36b70ea2bdab273e7d6eadd456fddcc2aa693f8f1cf096d57c3719d1106e9f85d50a4ffbf0ed7e66da2da0a5f23b6ee8c7194ba

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

    Filesize

    40B

    MD5

    07a14e880f96784c3283c0319a41b704

    SHA1

    f98d67df7b452d1556900a67aaed9022f0c6a3b7

    SHA256

    5413e99a0001f5b5f35875beeb565ee8df395a79176f0c00e391c8eb96eeda70

    SHA512

    7cded3abb274c82e8bb0a886870448e715c9d64eab450111454697f15707e204da1e3e2ea79e2ca9a9a44211bb6aeb97d68c52bd77ac6e522c620ddbe3aff6ac