Analysis

  • max time kernel
    136s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 23:51

General

  • Target

    Payment-Receipt.scr

  • Size

    547KB

  • MD5

    d878c38dcae8eb7855f194b29fde64e3

  • SHA1

    a3c6e85f4ec15bffbdf1523564816d93e447a56b

  • SHA256

    7fc2806d0821e5367c81773db3f59020ca283312b9975ef3ee19c139af0a4d69

  • SHA512

    8ffa3435a879bf396a0e9482d8a14675e627b61256e49d12f29fe99cd0cf55718c3b807a033068c07a09e6188f30f6f4903a15e5310f1d5b17db45f12e73fcee

Malware Config

Signatures

  • AgentTesla

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

  • AgentTesla Payload 15 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment-Receipt.scr
    "C:\Users\Admin\AppData\Local\Temp\Payment-Receipt.scr" /S
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2896
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zhwDIlhqTdra" /XML "C:\Users\Admin\AppData\Local\Temp\tmp10A9.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4896
    • C:\Users\Admin\AppData\Local\Temp\Payment-Receipt.scr
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:4260

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\Payment-Receipt.scr.log

    Filesize

    586B

    MD5

    e7754d33dec8483aeec8793fa480d33f

    SHA1

    e273f70ee5466ba99bd2d6024796190fc175a128

    SHA256

    aabf1eaeba67481fc676126b41599b7dcd9dfa5821f1cb0599d088dc1ce1e743

    SHA512

    68a769c8287f8d3846e7c09fed441a6684416b0ced66a6a6d8183c4dd7a24c85c83fd2c77fa0471056ca1edcb435ead38a3de2cfae4869558b166c0a26928c73

  • C:\Users\Admin\AppData\Local\Temp\tmp10A9.tmp

    Filesize

    1KB

    MD5

    f1942505c775c710146ff289055c989c

    SHA1

    f8a442044276db4c4c359658f07e14a754893be1

    SHA256

    93d2ceaafb9ef267562f89c7305c6d237c3beb07325b8c40b543690b11cc85d5

    SHA512

    f8c815fe406ea5e94aed2acca5f4b871409ba1de2d36939579bfab76aa69c5e27a4a5b5795b3bc973fb3b7c40afe3f9bf06f18f98a5a97cd87587d0747c18dcd

  • memory/2896-130-0x0000000074DB0000-0x0000000075361000-memory.dmp

    Filesize

    5.7MB

  • memory/4260-141-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/4260-142-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/4260-133-0x0000000000000000-mapping.dmp

  • memory/4260-137-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/4260-138-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/4260-140-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/4260-139-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/4260-157-0x0000000074DB0000-0x0000000075361000-memory.dmp

    Filesize

    5.7MB

  • memory/4260-143-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/4260-134-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/4260-145-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/4260-147-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/4260-148-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/4260-151-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/4260-153-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/4260-154-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/4260-156-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/4896-131-0x0000000000000000-mapping.dmp