Analysis

  • max time kernel
    91s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-11-2022 09:06

General

  • Target

    a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe

  • Size

    361KB

  • MD5

    11237374706a36f4f556e6afa6feec71

  • SHA1

    689f06cf6772a9bb6ea5eeb4764bf962f81a6080

  • SHA256

    a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2

  • SHA512

    3084502dcc04451ee51ed820318cbed89f96f3c5bb6abcbddb4bb6526f913e61b5fee1ed7636ad12d16e17ee41d954516e2c18859afac39789ff441debaa9886

  • SSDEEP

    6144:EttBiR4jOsq9aEsiUscu5H2wXXDdGMzWdvV0ZkrrC7/Z8p4xpfgMS8GXelP:E04WoEsiUo5H2OXoMzwvV0GraGCp4Mu

Malware Config

Signatures

  • ACProtect 1.3x - 1.4x DLL software 2 IoCs

    Detects file using ACProtect software.

  • UPX packed file 6 IoCs

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

  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in System32 directory 2 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe
    "C:\Users\Admin\AppData\Local\Temp\a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4396
    • C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\SysWOW64\rundll32.exe msinaz32.dll,rbNCrnSwdubl
      2⤵
      • Loads dropped DLL
      PID:5012
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4396 -s 684
      2⤵
      • Program crash
      PID:788
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4396 -ip 4396
    1⤵
      PID:3424

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    1
    T1081

    Discovery

    Query Registry

    1
    T1012

    Collection

    Data from Local System

    1
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Windows\SysWOW64\msinaz32.dll
      Filesize

      172KB

      MD5

      f1495e1d8577d92f47d842b5a13bbbe4

      SHA1

      d16c0db41258901fa83b16fedaaaaedbe7cee1d3

      SHA256

      149ac596ec3e31105008cb71178102cd118dbe6b4e3cac52305d9a4fe53f4c9f

      SHA512

      4543cd7776fe717c9e16c46834d31828f8d30bde30576b056b5d4503a1896402c98be8dfee2f6bd69d93f1b2f21bd57c62b0fbdaac14135707fe9410a67f36df

    • C:\Windows\SysWOW64\msinaz32.dll
      Filesize

      172KB

      MD5

      f1495e1d8577d92f47d842b5a13bbbe4

      SHA1

      d16c0db41258901fa83b16fedaaaaedbe7cee1d3

      SHA256

      149ac596ec3e31105008cb71178102cd118dbe6b4e3cac52305d9a4fe53f4c9f

      SHA512

      4543cd7776fe717c9e16c46834d31828f8d30bde30576b056b5d4503a1896402c98be8dfee2f6bd69d93f1b2f21bd57c62b0fbdaac14135707fe9410a67f36df

    • memory/4396-132-0x0000000000400000-0x000000000046B000-memory.dmp
      Filesize

      428KB

    • memory/4396-133-0x00000000022A0000-0x00000000022FA000-memory.dmp
      Filesize

      360KB

    • memory/4396-134-0x0000000000400000-0x000000000046B000-memory.dmp
      Filesize

      428KB

    • memory/4396-135-0x0000000002830000-0x00000000028B6000-memory.dmp
      Filesize

      536KB

    • memory/4396-138-0x0000000002830000-0x00000000028B6000-memory.dmp
      Filesize

      536KB

    • memory/4396-141-0x0000000000400000-0x000000000046B000-memory.dmp
      Filesize

      428KB

    • memory/5012-136-0x0000000000000000-mapping.dmp
    • memory/5012-140-0x0000000010000000-0x0000000010086000-memory.dmp
      Filesize

      536KB