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Analysis

  • max time kernel
    64s
  • max time network
    129s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    02/11/2022, 11:08

General

  • Target

    a0a03ea560743e21418000cf701049788440b0c07b4091f000cb79b54e21120a.exe

  • Size

    2.1MB

  • MD5

    c8a327dde102b3f2ebc89d47a343a311

  • SHA1

    d953323d520c26a998cd7c69cf493b04a33c7d77

  • SHA256

    a0a03ea560743e21418000cf701049788440b0c07b4091f000cb79b54e21120a

  • SHA512

    a602c165e1a491efe248f63c1274a7569fbcb0028dcba131018cb1ca47c775fb0e04b058662396fb2a48598d5945e331403e130090f9cb648bbf999c364e63c7

  • SSDEEP

    49152:s/rDYX+DKOQG914qExmAiF5FnhaU/WtN+sNLqH+z6s0NXO0HVXy:aDYXydQGdzSIWaKLqHQUXOWy

Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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.

  • 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 6 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a0a03ea560743e21418000cf701049788440b0c07b4091f000cb79b54e21120a.exe
    "C:\Users\Admin\AppData\Local\Temp\a0a03ea560743e21418000cf701049788440b0c07b4091f000cb79b54e21120a.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:1256
    • C:\Users\Admin\AppData\Local\Temp\a0a03ea560743e21418000cf701049788440b0c07b4091f000cb79b54e21120a.exe
      C:\Users\Admin\AppData\Local\Temp\a0a03ea560743e21418000cf701049788440b0c07b4091f000cb79b54e21120a.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=58.0.3135.127 --initial-client-data=0x108,0x110,0x114,0x10c,0x118,0x7451c900,0x7451c910,0x7451c91c
      2⤵
      • Loads dropped DLL
      PID:1048
    • C:\Users\Admin\AppData\Local\Temp\Opera Installer Temp\a0a03ea560743e21418000cf701049788440b0c07b4091f000cb79b54e21120a.exe
      "C:\Users\Admin\AppData\Local\Temp\Opera Installer Temp\a0a03ea560743e21418000cf701049788440b0c07b4091f000cb79b54e21120a.exe" --version
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:828

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Opera Installer Temp\a0a03ea560743e21418000cf701049788440b0c07b4091f000cb79b54e21120a.exe

    Filesize

    2.1MB

    MD5

    c8a327dde102b3f2ebc89d47a343a311

    SHA1

    d953323d520c26a998cd7c69cf493b04a33c7d77

    SHA256

    a0a03ea560743e21418000cf701049788440b0c07b4091f000cb79b54e21120a

    SHA512

    a602c165e1a491efe248f63c1274a7569fbcb0028dcba131018cb1ca47c775fb0e04b058662396fb2a48598d5945e331403e130090f9cb648bbf999c364e63c7

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

    Filesize

    40B

    MD5

    82ffd8abe9b4163a7c666dd4f3be517b

    SHA1

    f0c7ca2d81bb8afce8a8ce6b36017c060bdbaf9d

    SHA256

    aecea7c915cee66f5fa01348c2a3d09687e60cd588ba62b193e5add36735235d

    SHA512

    6d19a0ccc141fb928342b6c0495816392508730d0a684bf3a4cec68a2a90680bf0c1ad61f12daa51f1fa785e96aca62eb5ad8f84ef0bd86184f6bb2d01cd436d

  • \Users\Admin\AppData\Local\Temp\Opera Installer Temp\a0a03ea560743e21418000cf701049788440b0c07b4091f000cb79b54e21120a.exe

    Filesize

    2.1MB

    MD5

    c8a327dde102b3f2ebc89d47a343a311

    SHA1

    d953323d520c26a998cd7c69cf493b04a33c7d77

    SHA256

    a0a03ea560743e21418000cf701049788440b0c07b4091f000cb79b54e21120a

    SHA512

    a602c165e1a491efe248f63c1274a7569fbcb0028dcba131018cb1ca47c775fb0e04b058662396fb2a48598d5945e331403e130090f9cb648bbf999c364e63c7

  • \Users\Admin\AppData\Local\Temp\Opera_installer_2211021208135281256.dll

    Filesize

    2.9MB

    MD5

    d4b6dd869f83ff4f989a8a1b175a5c3a

    SHA1

    3eb0ac3870e1c86345f9599ccace775a0fa34291

    SHA256

    ad240011c044c55bd86b5dbaa16a06aedbef340f60669b763d48222b2c9e91e6

    SHA512

    28383cd64d61cf9749e86b1de37cdb8df317fa359e3b37ed739cbd29b7331eaaad202803d0002a3819feedf31ee81a42d99727cd42057f64b1b7a3c97c212a95

  • \Users\Admin\AppData\Local\Temp\Opera_installer_2211021208140811048.dll

    Filesize

    2.9MB

    MD5

    d4b6dd869f83ff4f989a8a1b175a5c3a

    SHA1

    3eb0ac3870e1c86345f9599ccace775a0fa34291

    SHA256

    ad240011c044c55bd86b5dbaa16a06aedbef340f60669b763d48222b2c9e91e6

    SHA512

    28383cd64d61cf9749e86b1de37cdb8df317fa359e3b37ed739cbd29b7331eaaad202803d0002a3819feedf31ee81a42d99727cd42057f64b1b7a3c97c212a95

  • \Users\Admin\AppData\Local\Temp\Opera_installer_221102120815267828.dll

    Filesize

    2.9MB

    MD5

    d4b6dd869f83ff4f989a8a1b175a5c3a

    SHA1

    3eb0ac3870e1c86345f9599ccace775a0fa34291

    SHA256

    ad240011c044c55bd86b5dbaa16a06aedbef340f60669b763d48222b2c9e91e6

    SHA512

    28383cd64d61cf9749e86b1de37cdb8df317fa359e3b37ed739cbd29b7331eaaad202803d0002a3819feedf31ee81a42d99727cd42057f64b1b7a3c97c212a95

  • memory/828-68-0x0000000000250000-0x0000000000619000-memory.dmp

    Filesize

    3.8MB

  • memory/1048-64-0x00000000008C0000-0x0000000000C89000-memory.dmp

    Filesize

    3.8MB

  • memory/1256-61-0x0000000002870000-0x0000000002C39000-memory.dmp

    Filesize

    3.8MB

  • memory/1256-60-0x00000000008C0000-0x0000000000C89000-memory.dmp

    Filesize

    3.8MB

  • memory/1256-55-0x0000000075C61000-0x0000000075C63000-memory.dmp

    Filesize

    8KB

  • memory/1256-69-0x0000000002870000-0x0000000002C39000-memory.dmp

    Filesize

    3.8MB