Analysis

  • max time kernel
    150s
  • max time network
    86s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-04-2022 04:25

General

  • Target

    354852369f73c1ea5373b80d41dcea51da050314e4166f6db31d77708181630d.exe

  • Size

    1.1MB

  • MD5

    0030b152a3b0a429ea3389f6b739c2a0

  • SHA1

    46452a95e92729737ec83db171ac45f68380678d

  • SHA256

    354852369f73c1ea5373b80d41dcea51da050314e4166f6db31d77708181630d

  • SHA512

    e57e7c31cba09c52c502fec24a5c21db34cd8471b471c6e6f50104bba5e25e0326cf4868bc63150ead362f9670405f25b557274b3bbd5df1e85a88c4980c74ea

Malware Config

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

  • MassLogger Main Payload 2 IoCs
  • Executes dropped EXE 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

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

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

  • Accesses Microsoft Outlook profiles 1 TTPs 35 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • NTFS ADS 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\354852369f73c1ea5373b80d41dcea51da050314e4166f6db31d77708181630d.exe
    "C:\Users\Admin\AppData\Local\Temp\354852369f73c1ea5373b80d41dcea51da050314e4166f6db31d77708181630d.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1728
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2016
      • C:\Windows\SysWOW64\notepad.exe
        "C:\Windows\system32\notepad.exe"
        2⤵
        • Drops startup file
        • Loads dropped DLL
        • NTFS ADS
        • Suspicious use of WriteProcessMemory
        PID:2024
        • C:\Users\Admin\AppData\Roaming\AppData\iuytbf.exe
          "C:\Users\Admin\AppData\Roaming\AppData\iuytbf.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:1792
          • C:\Users\Admin\AppData\Roaming\AppData\iuytbf.exe
            "C:\Users\Admin\AppData\Roaming\AppData\iuytbf.exe"
            4⤵
            • Executes dropped EXE
            • Checks computer location settings
            • Accesses Microsoft Outlook profiles
            • Suspicious behavior: AddClipboardFormatListener
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            • outlook_office_path
            • outlook_win_path
            PID:324
          • C:\Users\Admin\AppData\Roaming\AppData\iuytbf.exe
            "C:\Users\Admin\AppData\Roaming\AppData\iuytbf.exe" 2 324 7115907
            4⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            PID:1812

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\AppData\iuytbf.exe

      Filesize

      1.1MB

      MD5

      0030b152a3b0a429ea3389f6b739c2a0

      SHA1

      46452a95e92729737ec83db171ac45f68380678d

      SHA256

      354852369f73c1ea5373b80d41dcea51da050314e4166f6db31d77708181630d

      SHA512

      e57e7c31cba09c52c502fec24a5c21db34cd8471b471c6e6f50104bba5e25e0326cf4868bc63150ead362f9670405f25b557274b3bbd5df1e85a88c4980c74ea

    • C:\Users\Admin\AppData\Roaming\AppData\iuytbf.exe

      Filesize

      1.1MB

      MD5

      0030b152a3b0a429ea3389f6b739c2a0

      SHA1

      46452a95e92729737ec83db171ac45f68380678d

      SHA256

      354852369f73c1ea5373b80d41dcea51da050314e4166f6db31d77708181630d

      SHA512

      e57e7c31cba09c52c502fec24a5c21db34cd8471b471c6e6f50104bba5e25e0326cf4868bc63150ead362f9670405f25b557274b3bbd5df1e85a88c4980c74ea

    • C:\Users\Admin\AppData\Roaming\AppData\iuytbf.exe

      Filesize

      1.1MB

      MD5

      0030b152a3b0a429ea3389f6b739c2a0

      SHA1

      46452a95e92729737ec83db171ac45f68380678d

      SHA256

      354852369f73c1ea5373b80d41dcea51da050314e4166f6db31d77708181630d

      SHA512

      e57e7c31cba09c52c502fec24a5c21db34cd8471b471c6e6f50104bba5e25e0326cf4868bc63150ead362f9670405f25b557274b3bbd5df1e85a88c4980c74ea

    • C:\Users\Admin\AppData\Roaming\AppData\iuytbf.exe

      Filesize

      1.1MB

      MD5

      0030b152a3b0a429ea3389f6b739c2a0

      SHA1

      46452a95e92729737ec83db171ac45f68380678d

      SHA256

      354852369f73c1ea5373b80d41dcea51da050314e4166f6db31d77708181630d

      SHA512

      e57e7c31cba09c52c502fec24a5c21db34cd8471b471c6e6f50104bba5e25e0326cf4868bc63150ead362f9670405f25b557274b3bbd5df1e85a88c4980c74ea

    • \Users\Admin\AppData\Roaming\AppData\iuytbf.exe

      Filesize

      1.1MB

      MD5

      0030b152a3b0a429ea3389f6b739c2a0

      SHA1

      46452a95e92729737ec83db171ac45f68380678d

      SHA256

      354852369f73c1ea5373b80d41dcea51da050314e4166f6db31d77708181630d

      SHA512

      e57e7c31cba09c52c502fec24a5c21db34cd8471b471c6e6f50104bba5e25e0326cf4868bc63150ead362f9670405f25b557274b3bbd5df1e85a88c4980c74ea

    • \Users\Admin\AppData\Roaming\AppData\iuytbf.exe

      Filesize

      1.1MB

      MD5

      0030b152a3b0a429ea3389f6b739c2a0

      SHA1

      46452a95e92729737ec83db171ac45f68380678d

      SHA256

      354852369f73c1ea5373b80d41dcea51da050314e4166f6db31d77708181630d

      SHA512

      e57e7c31cba09c52c502fec24a5c21db34cd8471b471c6e6f50104bba5e25e0326cf4868bc63150ead362f9670405f25b557274b3bbd5df1e85a88c4980c74ea

    • memory/324-75-0x0000000001E10000-0x0000000001E96000-memory.dmp

      Filesize

      536KB

    • memory/324-72-0x000000000051DE60-mapping.dmp

    • memory/324-76-0x0000000001E10000-0x0000000001E96000-memory.dmp

      Filesize

      536KB

    • memory/324-90-0x0000000004B95000-0x0000000004BA6000-memory.dmp

      Filesize

      68KB

    • memory/1728-54-0x0000000076451000-0x0000000076453000-memory.dmp

      Filesize

      8KB

    • memory/1792-66-0x0000000000000000-mapping.dmp

    • memory/1792-70-0x0000000003000000-0x0000000003013000-memory.dmp

      Filesize

      76KB

    • memory/1812-74-0x0000000000000000-mapping.dmp

    • memory/2016-56-0x000007FEFBDC1000-0x000007FEFBDC3000-memory.dmp

      Filesize

      8KB

    • memory/2016-55-0x0000000000000000-mapping.dmp

    • memory/2024-60-0x0000000000080000-0x0000000000081000-memory.dmp

      Filesize

      4KB

    • memory/2024-59-0x0000000000000000-mapping.dmp