Analysis

  • max time kernel
    137s
  • max time network
    76s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    15-04-2022 01:03

General

  • Target

    c1353a19ab8fdea024ab88c43b3305e169ab791592b2a09821606eae3ed6a72c.exe

  • Size

    865KB

  • MD5

    684ab5df0b0647e7854f52a7391af236

  • SHA1

    aad4ce4f9dfa09516549fa679058a2145c73da2a

  • SHA256

    c1353a19ab8fdea024ab88c43b3305e169ab791592b2a09821606eae3ed6a72c

  • SHA512

    27667b4073d88bed64c94bc17202d4eaae8f60bbbe6a59baae0968a397acc6253c59153827c961520340be30ab66754e7f0fe7ac8cd5f29dd8417dad4c4c509d

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.ausvanlines.com.au
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    smith@222

Signatures

  • AgentTesla

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

  • Meta Stealer Stealer

    Meta Stealer steals passwords stored in browsers, written in C++.

  • AgentTesla Payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 1 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c1353a19ab8fdea024ab88c43b3305e169ab791592b2a09821606eae3ed6a72c.exe
    "C:\Users\Admin\AppData\Local\Temp\c1353a19ab8fdea024ab88c43b3305e169ab791592b2a09821606eae3ed6a72c.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2000
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\XePEnDJnRaRyGd" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD3DA.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1968
    • C:\Users\Admin\AppData\Local\Temp\c1353a19ab8fdea024ab88c43b3305e169ab791592b2a09821606eae3ed6a72c.exe
      "{path}"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2960

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpD3DA.tmp

    Filesize

    1KB

    MD5

    440f45f12a7c09fb6998f313c4b5da6a

    SHA1

    8e07185ab2ef84addc077804b91fb3e22a1f47ee

    SHA256

    58aa651d016d1a0aae389c17312d8714ca19fade4e13541cf37767ab38279925

    SHA512

    b2a73a9c10efed38c8314c5138a95d6ba19850732493946b49828e806666016ab2ce21f9cc61be032bbc7877c40370266ed20ef4029dc449565bb13f46bf28a9

  • memory/2000-130-0x0000000000680000-0x000000000075E000-memory.dmp

    Filesize

    888KB

  • memory/2000-131-0x0000000005630000-0x0000000005BD4000-memory.dmp

    Filesize

    5.6MB

  • memory/2000-132-0x0000000004FB0000-0x0000000005042000-memory.dmp

    Filesize

    584KB

  • memory/2000-133-0x0000000005060000-0x000000000506A000-memory.dmp

    Filesize

    40KB

  • memory/2000-134-0x0000000007BA0000-0x00000000080CC000-memory.dmp

    Filesize

    5.2MB

  • memory/2000-135-0x0000000008380000-0x000000000841C000-memory.dmp

    Filesize

    624KB

  • memory/2960-139-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/2960-140-0x0000000006740000-0x00000000067A6000-memory.dmp

    Filesize

    408KB