Analysis

  • max time kernel
    146s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    26-02-2021 15:12

General

  • Target

    9a041438adec53ed9e8f6ed3b2eb709b.exe

  • Size

    661KB

  • MD5

    9a041438adec53ed9e8f6ed3b2eb709b

  • SHA1

    dbabb8cb2b96c4e4cc4006084ebd3918e48c5cfb

  • SHA256

    bb8889ec467fc276ee609b20f9f321dbd97b0bdba919bbf9e38f7d8d7517ed2b

  • SHA512

    4766bf1e508b0397f8b936a5a1b8fef2b63091f2b204953c32a4db4b80dd8624c77d58500f1b003bb0d888296d7156ce9ff5b0298843ee4b4501895e4c30cbe6

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.konokonozanzibar.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Kk20@All

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
  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9a041438adec53ed9e8f6ed3b2eb709b.exe
    "C:\Users\Admin\AppData\Local\Temp\9a041438adec53ed9e8f6ed3b2eb709b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1856
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\evmcsxVj" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3247.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1336
    • C:\Users\Admin\AppData\Local\Temp\9a041438adec53ed9e8f6ed3b2eb709b.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1700

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp3247.tmp

    MD5

    7ba494562119d7c7e11538bce70add8f

    SHA1

    8dc8a773aa74f1aaeeba1072c631397761c7db1b

    SHA256

    4331418a42f7d5f082278a5e4d07412b5426bf885186205b96d5c70eca31796e

    SHA512

    3a4bbc3fbc0ae234af05958acd6bfdd93476d11fe2346b921bceb9b812be9deeeac0f4852b647583835214c3570693a1b6770507b62d7db91ada9fb6374b5b6d

  • memory/1336-8-0x0000000000000000-mapping.dmp

  • memory/1700-12-0x0000000074590000-0x0000000074C7E000-memory.dmp

    Filesize

    6.9MB

  • memory/1700-10-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1700-11-0x000000000043760E-mapping.dmp

  • memory/1700-13-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1700-15-0x0000000004C20000-0x0000000004C21000-memory.dmp

    Filesize

    4KB

  • memory/1700-16-0x0000000004C21000-0x0000000004C22000-memory.dmp

    Filesize

    4KB

  • memory/1856-6-0x0000000000440000-0x000000000044B000-memory.dmp

    Filesize

    44KB

  • memory/1856-7-0x0000000005D00000-0x0000000005D86000-memory.dmp

    Filesize

    536KB

  • memory/1856-5-0x0000000004E30000-0x0000000004E31000-memory.dmp

    Filesize

    4KB

  • memory/1856-3-0x0000000000A70000-0x0000000000A71000-memory.dmp

    Filesize

    4KB

  • memory/1856-2-0x0000000074590000-0x0000000074C7E000-memory.dmp

    Filesize

    6.9MB