Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/05/2024, 20:21

General

  • Target

    f986479fbcca1de6736ce7e6e539c69f4edb78a057e0d82afdd2964499f83111.exe

  • Size

    3.4MB

  • MD5

    34895640f762716a63dbb27d17b154f1

  • SHA1

    41ba17b62678069ff1e2f4bd2b438d261496f70b

  • SHA256

    f986479fbcca1de6736ce7e6e539c69f4edb78a057e0d82afdd2964499f83111

  • SHA512

    f32aef71bfb2524d8e006b0f5518e37eda753bcbee9e3b499f9f1a69d0a056f7b1e5846eae13860f0d14a67908034fbcbb9f1a0e0a6ca3ab2019923d75829ba3

  • SSDEEP

    98304:ZNIX7cJWBfJNK43qAVd/sZFewgQhpejzEjlPdm23JYC+BBvUWupxdR1q:TUsqfJNK4aA/qkJ325YJvcLK

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 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f986479fbcca1de6736ce7e6e539c69f4edb78a057e0d82afdd2964499f83111.exe
    "C:\Users\Admin\AppData\Local\Temp\f986479fbcca1de6736ce7e6e539c69f4edb78a057e0d82afdd2964499f83111.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Modifies system certificate store
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4668
    • C:\Users\Admin\AppData\Local\Temp\f986479fbcca1de6736ce7e6e539c69f4edb78a057e0d82afdd2964499f83111.exe
      C:\Users\Admin\AppData\Local\Temp\f986479fbcca1de6736ce7e6e539c69f4edb78a057e0d82afdd2964499f83111.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=91.0.4516.36 --initial-client-data=0x2f4,0x2f8,0x2fc,0x2d4,0x300,0x74e9afd0,0x74e9afe0,0x74e9afec
      2⤵
      • Loads dropped DLL
      PID:4000
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\f986479fbcca1de6736ce7e6e539c69f4edb78a057e0d82afdd2964499f83111.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\f986479fbcca1de6736ce7e6e539c69f4edb78a057e0d82afdd2964499f83111.exe" --version
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:4740
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202405132021511\assistant\_sfx.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202405132021511\assistant\_sfx.exe"
      2⤵
      • Executes dropped EXE
      PID:4840
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202405132021511\assistant\assistant_installer.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202405132021511\assistant\assistant_installer.exe" --version
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2828
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202405132021511\assistant\assistant_installer.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202405132021511\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,0x270,0x274,0x248,0x278,0x4d4f48,0x4d4f58,0x4d4f64
        3⤵
        • Executes dropped EXE
        PID:3208

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\f986479fbcca1de6736ce7e6e539c69f4edb78a057e0d82afdd2964499f83111.exe

    Filesize

    3.4MB

    MD5

    34895640f762716a63dbb27d17b154f1

    SHA1

    41ba17b62678069ff1e2f4bd2b438d261496f70b

    SHA256

    f986479fbcca1de6736ce7e6e539c69f4edb78a057e0d82afdd2964499f83111

    SHA512

    f32aef71bfb2524d8e006b0f5518e37eda753bcbee9e3b499f9f1a69d0a056f7b1e5846eae13860f0d14a67908034fbcbb9f1a0e0a6ca3ab2019923d75829ba3

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202405132021511\additional_file0.tmp

    Filesize

    1.4MB

    MD5

    e9a2209b61f4be34f25069a6e54affea

    SHA1

    6368b0a81608c701b06b97aeff194ce88fd0e3c0

    SHA256

    e950f17f4181009eeafa9f5306e8a9dfd26d88ca63b1838f44ff0efc738e7d1f

    SHA512

    59e46277ca79a43ed8b0a25b24eff013e251a75f90587e013b9c12851e5dd7283b6172f7d48583982f6a32069457778ee440025c1c754bf7bb6ce8ae1d2c3fc5

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202405132021511\assistant\assistant_installer.exe

    Filesize

    1.8MB

    MD5

    4c8fbed0044da34ad25f781c3d117a66

    SHA1

    8dd93340e3d09de993c3bc12db82680a8e69d653

    SHA256

    afe569ce9e4f71c23ba5f6e8fd32be62ac9538e397cde8f2ecbe46faa721242a

    SHA512

    a04e6fd052d2d63a0737c83702c66a9af834f9df8423666508c42b3e1d8384300239c9ddacdc31c1e85140eb1193bcfac209f218750b40342492ffce6e9da481

  • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2405132021504874668.dll

    Filesize

    5.2MB

    MD5

    c447a73deb48e83630ac056fc824c36a

    SHA1

    6bf6bd896256809ebc1d0e7d6d5644dcbb8f0b5f

    SHA256

    229252ec84fb70a51c059de6010695b4696ab6510b4aa6f75de91dad443bae12

    SHA512

    e30d67ee5a5d543fb9e6e4492cbcbe40a7b00ffba896dd9c2c927e350eddbd2a81c46305abb06f4239ab32b0786075f7106b7fc377ea4ac1681b57f956a28b6c

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

    Filesize

    40B

    MD5

    0ea3e2b544ddaf12a319e1394805d04a

    SHA1

    bb37d1c450abcb75b3d231d311d6fbe3e3168168

    SHA256

    91d794129daf225ef3fed4c03ea28a3081745da89be9dc0cb4461e9c1a7f271d

    SHA512

    e68bc3ed35558c7e0336650c76fb6729224a9a3a3b6ab30514dbe3d36fc6dccdbd228c0df0e7760b936a7c0362036a3d3ec1a6100bacdeea48b1df536f428144

  • memory/4000-5-0x0000000000400000-0x00000000009C3000-memory.dmp

    Filesize

    5.8MB

  • memory/4000-35-0x0000000000400000-0x00000000009C3000-memory.dmp

    Filesize

    5.8MB

  • memory/4668-2-0x0000000000400000-0x00000000009C3000-memory.dmp

    Filesize

    5.8MB

  • memory/4668-34-0x0000000000400000-0x00000000009C3000-memory.dmp

    Filesize

    5.8MB

  • memory/4740-15-0x0000000000400000-0x00000000009C3000-memory.dmp

    Filesize

    5.8MB

  • memory/4740-19-0x0000000000400000-0x00000000009C3000-memory.dmp

    Filesize

    5.8MB