Analysis

  • max time kernel
    141s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    12-06-2024 13:58

General

  • Target

    bf19a1b8febfef715831b6c6864854df1673bdf2483f236752fbc99fedd33d05.exe

  • Size

    2.7MB

  • MD5

    3a6c337e35fc0876cb5726f2edfb3118

  • SHA1

    34806f53b8e78997b91861efca72d3693181df2b

  • SHA256

    bf19a1b8febfef715831b6c6864854df1673bdf2483f236752fbc99fedd33d05

  • SHA512

    3f7c4c0c047596cdc0a9005796f2edfaee16c61b528b4bc834c7be991a67f04546da610ced7d9092056cd1c0c3b2bd0aa40f537b52d73e476febf16d1a859c2c

  • SSDEEP

    49152:X6KN3J3DrBW/NTy0ljNLHbW0e6v2D5NTtSbXUuE11eJC53B3AQ7iRrxdS8iyEuXE:XZZJnBW/ZjNL7pe6v2D5NTS3E1vHwQu8

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 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 6 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.

  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bf19a1b8febfef715831b6c6864854df1673bdf2483f236752fbc99fedd33d05.exe
    "C:\Users\Admin\AppData\Local\Temp\bf19a1b8febfef715831b6c6864854df1673bdf2483f236752fbc99fedd33d05.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2860
    • C:\Users\Admin\AppData\Local\Temp\bf19a1b8febfef715831b6c6864854df1673bdf2483f236752fbc99fedd33d05.exe
      C:\Users\Admin\AppData\Local\Temp\bf19a1b8febfef715831b6c6864854df1673bdf2483f236752fbc99fedd33d05.exe --type=crashpad-handler /prefetch:7 --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=90.0.4480.48 --initial-client-data=0x188,0x18c,0x190,0x15c,0x194,0x745989c8,0x745989d8,0x745989e4
      2⤵
      • Loads dropped DLL
      PID:2228
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\bf19a1b8febfef715831b6c6864854df1673bdf2483f236752fbc99fedd33d05.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\bf19a1b8febfef715831b6c6864854df1673bdf2483f236752fbc99fedd33d05.exe" --version
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:2692

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    a80a6e126c8f29f4d7e6c4ac50ac46bb

    SHA1

    7617b8631e946ac13ae9df4ebb547c57935e841b

    SHA256

    6fb5201ab18b4cbafcfd5f85cb4fb43ddcd1feb81936c9e87ad841c486fd4662

    SHA512

    efe6cd0b1c19401686e4e31a89d279a7f5661fb2c4ba140766be0c3908a89bb338b3d62bc1509b4fd25ce67a34ce2850791f30cc4bab0444c38110a2b0e47b9c

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    936a6c190b44ad2332260defe55f2e66

    SHA1

    097fb9289e19131b742aeabb812a751be905def4

    SHA256

    18afacb2996826e0181de2d8f0d4114c2fd13053e62ca6fd1c0952dfd48f5b17

    SHA512

    35e8948408cf4c64fb819691c7b9f308936e1ac776bf09bd2038e592b3a23beabc646cace17d4df4118d5a7c5a4f43ca990a816724d09d27b1115f70306eb99f

  • C:\Users\Admin\AppData\Local\Temp\Cab1BCA.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\Tar1CDD.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • \Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\bf19a1b8febfef715831b6c6864854df1673bdf2483f236752fbc99fedd33d05.exe

    Filesize

    2.7MB

    MD5

    3a6c337e35fc0876cb5726f2edfb3118

    SHA1

    34806f53b8e78997b91861efca72d3693181df2b

    SHA256

    bf19a1b8febfef715831b6c6864854df1673bdf2483f236752fbc99fedd33d05

    SHA512

    3f7c4c0c047596cdc0a9005796f2edfaee16c61b528b4bc834c7be991a67f04546da610ced7d9092056cd1c0c3b2bd0aa40f537b52d73e476febf16d1a859c2c

  • \Users\Admin\AppData\Local\Temp\Opera_installer_2406121358433772860.dll

    Filesize

    4.5MB

    MD5

    81fe65af3d3707ef3d58020f87c8ae21

    SHA1

    d25b438f9c2a4ef5929ca4167e2f6526f9252703

    SHA256

    c2be617c6c6a77724400992878a95dfdb7dd24571330a167e9c423d33098cb7b

    SHA512

    2a3cd92b9f5df14834cff9b37e5fa40faf47d8bb4a637fe44d58d69b0fdc218d2ea39e179b711ebad715eb656c8fb7fa2b7b4642c3301e000bf60fc38a6e0969

  • memory/2228-10-0x0000000000400000-0x000000000092E000-memory.dmp

    Filesize

    5.2MB

  • memory/2692-22-0x0000000000400000-0x000000000092E000-memory.dmp

    Filesize

    5.2MB

  • memory/2692-17-0x0000000000400000-0x000000000092E000-memory.dmp

    Filesize

    5.2MB

  • memory/2860-15-0x00000000035C0000-0x0000000003AEE000-memory.dmp

    Filesize

    5.2MB

  • memory/2860-0-0x0000000000400000-0x000000000092E000-memory.dmp

    Filesize

    5.2MB

  • memory/2860-538-0x0000000000400000-0x000000000092E000-memory.dmp

    Filesize

    5.2MB

  • memory/2860-800-0x0000000002840000-0x0000000002D6E000-memory.dmp

    Filesize

    5.2MB