Analysis

  • max time kernel
    4294182s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20220311-en
  • submitted
    29-03-2022 20:25

General

  • Target

    d90e61034a0d2a070caa0f70c4cf5b42dfe9ba973ec1294d3bed0b8507e99cfb.exe

  • Size

    818KB

  • MD5

    d122b765deff93952e715492ba5ec371

  • SHA1

    5cc5e1aad31e9c12c2f7bc4e2639248a03b0c1ae

  • SHA256

    d90e61034a0d2a070caa0f70c4cf5b42dfe9ba973ec1294d3bed0b8507e99cfb

  • SHA512

    09236e28f0eb84230c91aaacdfa9d4fcfb3f7786eeda3a11c5a1a1c9a49ecc64cb887d6a80b713e6faf967f5fe36fa41d6765bc1a81e2d662a58278dabbc329b

Malware Config

Signatures

  • MassLogger

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

  • MassLogger Main Payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Deletes itself 1 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
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d90e61034a0d2a070caa0f70c4cf5b42dfe9ba973ec1294d3bed0b8507e99cfb.exe
    "C:\Users\Admin\AppData\Local\Temp\d90e61034a0d2a070caa0f70c4cf5b42dfe9ba973ec1294d3bed0b8507e99cfb.exe"
    1⤵
    • Checks computer location settings
    • Accesses Microsoft Outlook profiles
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:1992
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\d90e61034a0d2a070caa0f70c4cf5b42dfe9ba973ec1294d3bed0b8507e99cfb.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:544
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\d90e61034a0d2a070caa0f70c4cf5b42dfe9ba973ec1294d3bed0b8507e99cfb.exe'
      2⤵
      • Deletes itself
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1924

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    0ed34c8e69f217b4923791f548202cdd

    SHA1

    73bdc18f8be9c39f71027bb7ddb8532c1a1de799

    SHA256

    3a6800472e202fa800e3499950485872cdafce3b0420f45514a8f099f99d52af

    SHA512

    3280132dde143d9b27cae785a642988edc8bb6ddbdc80ec45a0d36d832ae49bad043a20d54dd48bf92addf29b9b6fbb046871e2ee5fba4ee7e47239da0668af3

  • memory/544-58-0x0000000074C61000-0x0000000074C63000-memory.dmp

    Filesize

    8KB

  • memory/544-60-0x000000006EA50000-0x000000006EFFB000-memory.dmp

    Filesize

    5.7MB

  • memory/544-61-0x00000000023F0000-0x000000000303A000-memory.dmp

    Filesize

    12.3MB

  • memory/1924-65-0x000000006EA50000-0x000000006EFFB000-memory.dmp

    Filesize

    5.7MB

  • memory/1992-54-0x00000000010B0000-0x0000000001182000-memory.dmp

    Filesize

    840KB

  • memory/1992-55-0x0000000000FD0000-0x000000000103A000-memory.dmp

    Filesize

    424KB

  • memory/1992-56-0x0000000004B40000-0x0000000004BCC000-memory.dmp

    Filesize

    560KB

  • memory/1992-59-0x0000000004D25000-0x0000000004D36000-memory.dmp

    Filesize

    68KB