Analysis

  • max time kernel
    104s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 22:35

General

  • Target

    Overdue Invoice.,-,.exe

  • Size

    545KB

  • MD5

    0812e6b42bce4af2abf9b12bbe8379a8

  • SHA1

    3f83730f63a233a6b37528b0fe8326d5ece24586

  • SHA256

    3333a191bc36b4a7a76e51c0b7b83c5d2b7d253f074789c2302ec598c30711b3

  • SHA512

    be52d77585fc3cb261b3b28b215f26daac4d2b8b4fbb6561a8a48ec207130619605c176d6dec11827826160f9c47655d12521433da5a0856291168981b0739f3

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.blc.com.np
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Bhuramal123

Signatures

  • AgentTesla

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

  • AgentTesla Payload 1 IoCs
  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Overdue Invoice.,-,.exe
    "C:\Users\Admin\AppData\Local\Temp\Overdue Invoice.,-,.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:776
    • C:\Users\Admin\AppData\Local\Temp\Overdue Invoice.,-,.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2016

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Overdue Invoice.,-,.exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • memory/776-130-0x00000000006C0000-0x000000000074E000-memory.dmp

    Filesize

    568KB

  • memory/776-131-0x0000000005640000-0x0000000005BE4000-memory.dmp

    Filesize

    5.6MB

  • memory/776-132-0x0000000005130000-0x00000000051C2000-memory.dmp

    Filesize

    584KB

  • memory/776-133-0x00000000050F0000-0x00000000050FA000-memory.dmp

    Filesize

    40KB

  • memory/776-134-0x0000000007600000-0x000000000769C000-memory.dmp

    Filesize

    624KB

  • memory/2016-135-0x0000000000000000-mapping.dmp

  • memory/2016-136-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/2016-138-0x0000000005E40000-0x0000000005EA6000-memory.dmp

    Filesize

    408KB

  • memory/2016-139-0x0000000006670000-0x00000000066C0000-memory.dmp

    Filesize

    320KB