Analysis

  • max time kernel
    122s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    26-10-2021 19:34

General

  • Target

    COVID-19 Emergency.exe

  • Size

    610KB

  • MD5

    ea4216e97a3007309295e8a7b769208b

  • SHA1

    bf86f6614965d6ebd5d2ea10d46780a86b225c44

  • SHA256

    7a4b1e5015937985613975df6c4f2046b0398c6e32ea10b780da1cce61ef3d44

  • SHA512

    3d13436cfd5ab6db58b017fb7ffa1bfc62cecf9c899a5d880233457f0ac9dd331c37eca300271cdf2ed0cfb6a7e437299861aee3c8635bc33812fbc8830804ff

Malware Config

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Loads dropped DLL 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.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\COVID-19 Emergency.exe
    "C:\Users\Admin\AppData\Local\Temp\COVID-19 Emergency.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:324
    • C:\Users\Admin\AppData\Local\Temp\COVID-19 Emergency.exe
      "C:\Users\Admin\AppData\Local\Temp\COVID-19 Emergency.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:568
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
        dw20.exe -x -s 508
        3⤵
        • Suspicious behavior: GetForegroundWindowSpam
        PID:1808

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\nstCF90.tmp\mzapy.dll

    MD5

    60ba5cdda738fa3d2f6788f9b433185f

    SHA1

    0466178daef91d539cf2d10cc803f3e26ade3a29

    SHA256

    a4d157016a78a53e8af20517ea1fe369bb68ca98f08a71488491b51bfb52012f

    SHA512

    a4d647880c57ed685fa9c5ec6347ce81b2a53d797d6477e9cd87aed310e920692ebf67adf02e3639b4f1b76720457a6111b50df933b6abe30b472b9a87ac5762

  • memory/324-55-0x0000000075B71000-0x0000000075B73000-memory.dmp

    Filesize

    8KB

  • memory/568-57-0x0000000000400000-0x000000000044B000-memory.dmp

    Filesize

    300KB

  • memory/568-58-0x000000000040188B-mapping.dmp

  • memory/568-61-0x00000000004F0000-0x00000000004F1000-memory.dmp

    Filesize

    4KB

  • memory/568-60-0x0000000000400000-0x000000000044B000-memory.dmp

    Filesize

    300KB

  • memory/568-63-0x00000000004F2000-0x00000000004F4000-memory.dmp

    Filesize

    8KB

  • memory/568-62-0x00000000004F1000-0x00000000004F2000-memory.dmp

    Filesize

    4KB

  • memory/568-64-0x00000000004F7000-0x00000000004F8000-memory.dmp

    Filesize

    4KB

  • memory/568-65-0x00000000004F8000-0x00000000004F9000-memory.dmp

    Filesize

    4KB

  • memory/1808-66-0x0000000000000000-mapping.dmp

  • memory/1808-68-0x00000000004D0000-0x00000000004D1000-memory.dmp

    Filesize

    4KB