Analysis

  • max time kernel
    124s
  • max time network
    112s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • 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 2 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 8 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:3888
    • 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:1176

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\RFQ-FOSL-GATE VALVES-PHCR-RFQ1-280121-A.xlsx.exe.log

    MD5

    0c2899d7c6746f42d5bbe088c777f94c

    SHA1

    622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

    SHA256

    5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

    SHA512

    ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

  • memory/1176-12-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1176-25-0x00000000053B1000-0x00000000053B2000-memory.dmp

    Filesize

    4KB

  • memory/1176-22-0x0000000006060000-0x0000000006061000-memory.dmp

    Filesize

    4KB

  • memory/1176-21-0x00000000058D0000-0x00000000058D1000-memory.dmp

    Filesize

    4KB

  • memory/1176-20-0x00000000053B0000-0x00000000053B1000-memory.dmp

    Filesize

    4KB

  • memory/1176-15-0x0000000073A20000-0x000000007410E000-memory.dmp

    Filesize

    6.9MB

  • memory/1176-13-0x00000000004374FE-mapping.dmp

  • memory/3888-7-0x0000000004CC0000-0x0000000004CC1000-memory.dmp

    Filesize

    4KB

  • memory/3888-11-0x0000000007110000-0x000000000716F000-memory.dmp

    Filesize

    380KB

  • memory/3888-10-0x0000000006820000-0x0000000006821000-memory.dmp

    Filesize

    4KB

  • memory/3888-9-0x00000000050B0000-0x00000000050B4000-memory.dmp

    Filesize

    16KB

  • memory/3888-8-0x0000000004DE0000-0x0000000004DE1000-memory.dmp

    Filesize

    4KB

  • memory/3888-2-0x0000000073A20000-0x000000007410E000-memory.dmp

    Filesize

    6.9MB

  • memory/3888-6-0x0000000004C20000-0x0000000004C21000-memory.dmp

    Filesize

    4KB

  • memory/3888-5-0x0000000005210000-0x0000000005211000-memory.dmp

    Filesize

    4KB

  • memory/3888-3-0x0000000000390000-0x0000000000391000-memory.dmp

    Filesize

    4KB