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Analysis

  • max time kernel
    122s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    18/03/2024, 19:30

General

  • Target

    27.exe

  • Size

    521KB

  • MD5

    b29fbc48ad3305f4dcab0be3145682a6

  • SHA1

    73152dd5e9cdf69d7ae9ff114aa818b2ec0decfb

  • SHA256

    104ae348871545562f1f0a2712ddb88659fda045dd969affd79fbdc25fc7e2fd

  • SHA512

    5111621a6bfd323812eed98e1053bde36598c1fb719e7c401a090d5ee679aee02f59d0337cf0f4fed780fbb4550add1cf812203e59efedb531081cf43931e838

  • SSDEEP

    12288:zbiKz52aC1sP906WMPTxgt8UnlQJAHCUkO/tRqUjRQ1F5CZTAujRM:Tl2af9061uKyOJCCUb7qUjRQsN

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.processengrg.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Bigbrain2022#

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 3 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Modifies system certificate store 2 TTPs 2 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\27.exe
    "C:\Users\Admin\AppData\Local\Temp\27.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:848
    • C:\Users\Admin\AppData\Local\Temp\27.exe
      "C:\Users\Admin\AppData\Local\Temp\27.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3000

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/848-0-0x0000000000AA0000-0x0000000000B28000-memory.dmp

    Filesize

    544KB

  • memory/848-1-0x0000000073F60000-0x000000007464E000-memory.dmp

    Filesize

    6.9MB

  • memory/848-2-0x00000000004F0000-0x0000000000530000-memory.dmp

    Filesize

    256KB

  • memory/848-3-0x00000000020C0000-0x0000000002130000-memory.dmp

    Filesize

    448KB

  • memory/848-4-0x00000000003E0000-0x00000000003E8000-memory.dmp

    Filesize

    32KB

  • memory/848-17-0x0000000073F60000-0x000000007464E000-memory.dmp

    Filesize

    6.9MB

  • memory/3000-11-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/3000-9-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/3000-7-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/3000-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/3000-15-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/3000-5-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/3000-18-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/3000-20-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/3000-21-0x0000000073870000-0x0000000073F5E000-memory.dmp

    Filesize

    6.9MB

  • memory/3000-22-0x0000000004890000-0x00000000048D0000-memory.dmp

    Filesize

    256KB

  • memory/3000-24-0x0000000073870000-0x0000000073F5E000-memory.dmp

    Filesize

    6.9MB

  • memory/3000-25-0x0000000004890000-0x00000000048D0000-memory.dmp

    Filesize

    256KB