Analysis

  • max time kernel
    70s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-10-2022 02:15

General

  • Target

    f3ac2998aa3e9d24f44ec29b04fd224fae0acd92762bb31ad9c386b66b1ea375.exe

  • Size

    2.1MB

  • MD5

    0714c6175587f4599ac58375115df70a

  • SHA1

    3fc4086f03d60e15b99a0b72624ecc8ccb84aaee

  • SHA256

    f3ac2998aa3e9d24f44ec29b04fd224fae0acd92762bb31ad9c386b66b1ea375

  • SHA512

    84763d69c8c911ec0e7043c9bc53881cb2b9e8a7bb08ec4af2df78670c957627753f959abf0a9c53ba5f0b2660a9634fd0629fc2f47139755da52da95f63c938

  • SSDEEP

    49152:a/rDYX+DKOQG914qExmAiF5FnhaU/WtN+sNLqH+z6s0NXO0HVXA:0DYXydQGdzSIWaKLqHQUXOWA

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 3 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 8 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f3ac2998aa3e9d24f44ec29b04fd224fae0acd92762bb31ad9c386b66b1ea375.exe
    "C:\Users\Admin\AppData\Local\Temp\f3ac2998aa3e9d24f44ec29b04fd224fae0acd92762bb31ad9c386b66b1ea375.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:5104
    • C:\Users\Admin\AppData\Local\Temp\f3ac2998aa3e9d24f44ec29b04fd224fae0acd92762bb31ad9c386b66b1ea375.exe
      C:\Users\Admin\AppData\Local\Temp\f3ac2998aa3e9d24f44ec29b04fd224fae0acd92762bb31ad9c386b66b1ea375.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=0x270,0x284,0x288,0x280,0x28c,0x7585c900,0x7585c910,0x7585c91c
      2⤵
      • Loads dropped DLL
      PID:4592
    • C:\Users\Admin\AppData\Local\Temp\Opera Installer Temp\f3ac2998aa3e9d24f44ec29b04fd224fae0acd92762bb31ad9c386b66b1ea375.exe
      "C:\Users\Admin\AppData\Local\Temp\Opera Installer Temp\f3ac2998aa3e9d24f44ec29b04fd224fae0acd92762bb31ad9c386b66b1ea375.exe" --version
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:2636

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Opera Installer Temp\f3ac2998aa3e9d24f44ec29b04fd224fae0acd92762bb31ad9c386b66b1ea375.exe

    Filesize

    2.1MB

    MD5

    0714c6175587f4599ac58375115df70a

    SHA1

    3fc4086f03d60e15b99a0b72624ecc8ccb84aaee

    SHA256

    f3ac2998aa3e9d24f44ec29b04fd224fae0acd92762bb31ad9c386b66b1ea375

    SHA512

    84763d69c8c911ec0e7043c9bc53881cb2b9e8a7bb08ec4af2df78670c957627753f959abf0a9c53ba5f0b2660a9634fd0629fc2f47139755da52da95f63c938

  • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2210280415373945104.dll

    Filesize

    2.9MB

    MD5

    d4b6dd869f83ff4f989a8a1b175a5c3a

    SHA1

    3eb0ac3870e1c86345f9599ccace775a0fa34291

    SHA256

    ad240011c044c55bd86b5dbaa16a06aedbef340f60669b763d48222b2c9e91e6

    SHA512

    28383cd64d61cf9749e86b1de37cdb8df317fa359e3b37ed739cbd29b7331eaaad202803d0002a3819feedf31ee81a42d99727cd42057f64b1b7a3c97c212a95

  • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2210280415393004592.dll

    Filesize

    2.9MB

    MD5

    d4b6dd869f83ff4f989a8a1b175a5c3a

    SHA1

    3eb0ac3870e1c86345f9599ccace775a0fa34291

    SHA256

    ad240011c044c55bd86b5dbaa16a06aedbef340f60669b763d48222b2c9e91e6

    SHA512

    28383cd64d61cf9749e86b1de37cdb8df317fa359e3b37ed739cbd29b7331eaaad202803d0002a3819feedf31ee81a42d99727cd42057f64b1b7a3c97c212a95

  • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2210280415397842636.dll

    Filesize

    2.9MB

    MD5

    d4b6dd869f83ff4f989a8a1b175a5c3a

    SHA1

    3eb0ac3870e1c86345f9599ccace775a0fa34291

    SHA256

    ad240011c044c55bd86b5dbaa16a06aedbef340f60669b763d48222b2c9e91e6

    SHA512

    28383cd64d61cf9749e86b1de37cdb8df317fa359e3b37ed739cbd29b7331eaaad202803d0002a3819feedf31ee81a42d99727cd42057f64b1b7a3c97c212a95

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

    Filesize

    40B

    MD5

    ee7a0cacdc35cce661dc30e5097e4d5b

    SHA1

    0772338166207a6a3e9f479c4152b1a41d8f9fd5

    SHA256

    6c095ed8b1c72133c87951b2727ce1c557093e44be3916b1625539b05043daf8

    SHA512

    f47a059f889ba525d1dd8e3003e971883800a3e0ce37eb8337377e956f3dd6a7fa9a5fd4fd76c7308c2eb014b184fe0753d86ea56e6953a5543bf5a81a40cff4

  • memory/2636-137-0x0000000000000000-mapping.dmp

  • memory/2636-141-0x00000000006E0000-0x0000000000AA9000-memory.dmp

    Filesize

    3.8MB

  • memory/2636-143-0x00000000006E0000-0x0000000000AA9000-memory.dmp

    Filesize

    3.8MB

  • memory/4592-134-0x0000000000000000-mapping.dmp

  • memory/4592-140-0x00000000001F0000-0x00000000005B9000-memory.dmp

    Filesize

    3.8MB

  • memory/5104-132-0x00000000001F0000-0x00000000005B9000-memory.dmp

    Filesize

    3.8MB

  • memory/5104-142-0x00000000001F0000-0x00000000005B9000-memory.dmp

    Filesize

    3.8MB