Analysis

  • max time kernel
    149s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 00:22

General

  • Target

    2sSTNqcKhUKdHy5.exe

  • Size

    793KB

  • MD5

    6e42044f5977b659e6afc8bcadc7d769

  • SHA1

    c9c2cb83cfd1515d878c562e6100ad22012c7dde

  • SHA256

    180624a2fc01585360e3cdb233e251a090aa58e3c85ed5cffd9c68a09d0572e1

  • SHA512

    6b6cac734413de30970c86a843fab406eb6f6d4d2de08365de426010fa544d5f7cf97bf136da52e5400d8bec5a44c8166db4bd021a8f65c47809f7f16b5caf08

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    server03.imanila.ph
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    sMh8K&LwfD2n

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    server03.imanila.ph
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    sMh8K&LwfD2n

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • AgentTesla Payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

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

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2sSTNqcKhUKdHy5.exe
    "C:\Users\Admin\AppData\Local\Temp\2sSTNqcKhUKdHy5.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3292
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HkODaaEGs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp36CF.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1444
    • C:\Users\Admin\AppData\Local\Temp\2sSTNqcKhUKdHy5.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2044

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp36CF.tmp

    Filesize

    1KB

    MD5

    5b799bcdbfdf01715e7ac3d2217ef40c

    SHA1

    64143845e0c8efcc00fecebd59523ef060dc7cca

    SHA256

    252b5a159c0991ad15a15899adba40219836b20854103bc9f8a49edffecdae76

    SHA512

    8d68f1f30ff039bbb516117e89bdea8d1031597245ee4810992bf6924d561673c005b2051b4f15556d01320066d4675135896dfa0cc273a04c09012fb4a8f395

  • memory/1444-135-0x0000000000000000-mapping.dmp

  • memory/2044-137-0x0000000000000000-mapping.dmp

  • memory/2044-138-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/2044-139-0x0000000005610000-0x0000000005676000-memory.dmp

    Filesize

    408KB

  • memory/2044-140-0x0000000006690000-0x00000000066E0000-memory.dmp

    Filesize

    320KB

  • memory/3292-130-0x0000000000280000-0x000000000034C000-memory.dmp

    Filesize

    816KB

  • memory/3292-131-0x00000000055E0000-0x0000000005B84000-memory.dmp

    Filesize

    5.6MB

  • memory/3292-132-0x0000000005030000-0x00000000050C2000-memory.dmp

    Filesize

    584KB

  • memory/3292-133-0x0000000005260000-0x00000000053E6000-memory.dmp

    Filesize

    1.5MB

  • memory/3292-134-0x0000000005170000-0x000000000520C000-memory.dmp

    Filesize

    624KB