Analysis

  • max time kernel
    140s
  • max time network
    18s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    30-01-2021 07:09

General

  • Target

    RFQ-FOSL-GATE VALVES-PHCR-RFQ1-280121-A.xlsx.exe

  • Size

    404KB

  • MD5

    70dec83f47afafe068a7b422a59d065d

  • SHA1

    086e10bce13fae1726585f4dbbf2fb5429f7155d

  • SHA256

    670b031cca042e01b07ece7021acc32ead795c2d64956c3f8754ff5f619dbcea

  • SHA512

    708c678c52b4b3f377403a93c70962d355afc85cab8cfdba1d540fcc4971c334291cf27b37b8d6d2b8ffc48c60e4a831078d683ec1bb6a7f8f063b4c9b800f51

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.vivaldi.net
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Qwerty2020@@$@6

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RFQ-FOSL-GATE VALVES-PHCR-RFQ1-280121-A.xlsx.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ-FOSL-GATE VALVES-PHCR-RFQ1-280121-A.xlsx.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1056
    • C:\Users\Admin\AppData\Local\Temp\RFQ-FOSL-GATE VALVES-PHCR-RFQ1-280121-A.xlsx.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1664

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1056-2-0x0000000073C60000-0x000000007434E000-memory.dmp

    Filesize

    6.9MB

  • memory/1056-3-0x0000000001230000-0x0000000001231000-memory.dmp

    Filesize

    4KB

  • memory/1056-5-0x0000000000C60000-0x0000000000C61000-memory.dmp

    Filesize

    4KB

  • memory/1056-6-0x0000000000360000-0x0000000000364000-memory.dmp

    Filesize

    16KB

  • memory/1056-7-0x0000000004B60000-0x0000000004BBF000-memory.dmp

    Filesize

    380KB

  • memory/1664-8-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1664-9-0x00000000004374FE-mapping.dmp

  • memory/1664-10-0x0000000073C60000-0x000000007434E000-memory.dmp

    Filesize

    6.9MB

  • memory/1664-11-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1664-13-0x0000000004AF0000-0x0000000004AF1000-memory.dmp

    Filesize

    4KB

  • memory/1664-14-0x0000000004AF1000-0x0000000004AF2000-memory.dmp

    Filesize

    4KB