Analysis

  • max time kernel
    151s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231127-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-12-2023 09:25

General

  • Target

    B.exe

  • Size

    716KB

  • MD5

    8c366167246b6e371d4be611105206e3

  • SHA1

    5689b19440aaa57b8893f7fabaff725963b92483

  • SHA256

    bee896925d62192aff4e13abda9cc0cff1cd063778b2dadb45035edd5d274c8a

  • SHA512

    9b5089b2656c24ac82b3c01e1d22e6bea3a1e1906104e5080a07404162b4cf595624ccd989c49341852fc22a939a3d84064fe54deb95b37ebc5b944146ebde7a

  • SSDEEP

    12288:rFdIfzChVnn1eJmllQAxyvyHhCR55JyRM/zZ0QEVJK:JszChV9wYtHhCR5/zqQeI

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    EwQnrCo8

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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\B.exe
    "C:\Users\Admin\AppData\Local\Temp\B.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3812
    • C:\Users\Admin\AppData\Local\Temp\B.exe
      "C:\Users\Admin\AppData\Local\Temp\B.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1156

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\B.exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • memory/1156-12-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/1156-21-0x0000000005020000-0x0000000005030000-memory.dmp

    Filesize

    64KB

  • memory/1156-20-0x0000000074C80000-0x0000000075430000-memory.dmp

    Filesize

    7.7MB

  • memory/1156-19-0x0000000005E10000-0x0000000005E60000-memory.dmp

    Filesize

    320KB

  • memory/1156-18-0x0000000005130000-0x0000000005196000-memory.dmp

    Filesize

    408KB

  • memory/1156-17-0x0000000005020000-0x0000000005030000-memory.dmp

    Filesize

    64KB

  • memory/1156-16-0x0000000074C80000-0x0000000075430000-memory.dmp

    Filesize

    7.7MB

  • memory/3812-5-0x0000000004F30000-0x0000000004F3A000-memory.dmp

    Filesize

    40KB

  • memory/3812-9-0x0000000005020000-0x0000000005028000-memory.dmp

    Filesize

    32KB

  • memory/3812-10-0x0000000005040000-0x000000000504A000-memory.dmp

    Filesize

    40KB

  • memory/3812-11-0x0000000007B50000-0x0000000007BCA000-memory.dmp

    Filesize

    488KB

  • memory/3812-8-0x0000000074C80000-0x0000000075430000-memory.dmp

    Filesize

    7.7MB

  • memory/3812-7-0x0000000005010000-0x0000000005026000-memory.dmp

    Filesize

    88KB

  • memory/3812-15-0x0000000074C80000-0x0000000075430000-memory.dmp

    Filesize

    7.7MB

  • memory/3812-6-0x0000000005180000-0x000000000521C000-memory.dmp

    Filesize

    624KB

  • memory/3812-0-0x0000000074C80000-0x0000000075430000-memory.dmp

    Filesize

    7.7MB

  • memory/3812-4-0x0000000005170000-0x0000000005180000-memory.dmp

    Filesize

    64KB

  • memory/3812-3-0x0000000004E90000-0x0000000004F22000-memory.dmp

    Filesize

    584KB

  • memory/3812-2-0x0000000005540000-0x0000000005AE4000-memory.dmp

    Filesize

    5.6MB

  • memory/3812-1-0x00000000003E0000-0x000000000049A000-memory.dmp

    Filesize

    744KB