Analysis

  • max time kernel
    114s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 11:46

General

  • Target

    Invoice 4907856.exe

  • Size

    598KB

  • MD5

    cfe01269c178fea11b28130dd457c43e

  • SHA1

    589c257ca5f0be53af4160bbd67c6a4dd01c8ae6

  • SHA256

    40cf3214cd412e73955af3a64b3e61691ec44f3ee6bd8031ea37e69dce07b393

  • SHA512

    7077c264debdbc5aa67e5d183eeaeb827360ecd886cce8bb24a7d93733bb33fad392dff3d2aa5a8854d9ecef70cde94510504e9eed7a5c8bb2d5145763374087

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    coronavirus2020

Signatures

  • AgentTesla

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

  • AgentTesla Payload 6 IoCs
  • 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 WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Invoice 4907856.exe
    "C:\Users\Admin\AppData\Local\Temp\Invoice 4907856.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1016
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SvmSwTQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9BD3.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:952
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1300

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp9BD3.tmp

    Filesize

    1KB

    MD5

    48769d93a79063b9e72e48d0d6ca9647

    SHA1

    f093726a11041071e2f3fdaa65c579e81b3357ff

    SHA256

    e63e9582b5b18f4c6fdceabf1183a5806bea51646221501229416eeb024a6ca0

    SHA512

    0896aba51389d118b9c09d0176afd6fad9e77b9fe15decbb2060e9887bb0b40235666639febc6df35601784460e3f866d83a4659d6e276a46e86b59f23be6b85

  • memory/952-58-0x0000000000000000-mapping.dmp

  • memory/1016-54-0x0000000001170000-0x000000000120C000-memory.dmp

    Filesize

    624KB

  • memory/1016-55-0x0000000000300000-0x0000000000310000-memory.dmp

    Filesize

    64KB

  • memory/1016-56-0x0000000000EB0000-0x0000000000F04000-memory.dmp

    Filesize

    336KB

  • memory/1016-57-0x0000000075AE1000-0x0000000075AE3000-memory.dmp

    Filesize

    8KB

  • memory/1300-60-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1300-61-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1300-63-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1300-64-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1300-65-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1300-66-0x000000000044767E-mapping.dmp

  • memory/1300-68-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1300-70-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB