Analysis

  • max time kernel
    102s
  • max time network
    123s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    19-10-2021 10:07

General

  • Target

    48b71ff758da6e68f6309b702e261999.exe

  • Size

    1.2MB

  • MD5

    48b71ff758da6e68f6309b702e261999

  • SHA1

    0b6a4a53dec603f20a3873037a56a6995554ded5

  • SHA256

    1ea3243ad2a3b383ac4ad841794eb7b802b882b9a39f985114edfa3453e4b19d

  • SHA512

    d00a011d0f716894d92c89f71fc4249fde8d62b114b07f64baba06938b71f97232eaf4d4ee2efaf27d268c1af24fdf5f2e182f0df3b15de2630ff16c444d7148

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.xenonaslikno.gr
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Fox#UgJVGN#0X

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Executes dropped EXE 1 IoCs
  • 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
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 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\48b71ff758da6e68f6309b702e261999.exe
    "C:\Users\Admin\AppData\Local\Temp\48b71ff758da6e68f6309b702e261999.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1752
    • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
      "C:\Users\Admin\AppData\Local\Temp\\InstallUtil.exe"
      2⤵
      • Executes dropped EXE
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:3228

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • memory/1752-117-0x0000000005960000-0x0000000005961000-memory.dmp

    Filesize

    4KB

  • memory/1752-118-0x0000000005350000-0x0000000005351000-memory.dmp

    Filesize

    4KB

  • memory/1752-119-0x0000000005460000-0x0000000005461000-memory.dmp

    Filesize

    4KB

  • memory/1752-120-0x0000000005460000-0x000000000595E000-memory.dmp

    Filesize

    5.0MB

  • memory/1752-121-0x0000000002BC0000-0x0000000002BE4000-memory.dmp

    Filesize

    144KB

  • memory/1752-122-0x0000000009D80000-0x0000000009D81000-memory.dmp

    Filesize

    4KB

  • memory/1752-123-0x000000000BBD0000-0x000000000BBDA000-memory.dmp

    Filesize

    40KB

  • memory/1752-115-0x00000000009A0000-0x00000000009A1000-memory.dmp

    Filesize

    4KB

  • memory/3228-125-0x000000000043766E-mapping.dmp

  • memory/3228-128-0x0000000000760000-0x000000000079C000-memory.dmp

    Filesize

    240KB

  • memory/3228-132-0x0000000004BC0000-0x00000000050BE000-memory.dmp

    Filesize

    5.0MB

  • memory/3228-133-0x0000000005020000-0x0000000005021000-memory.dmp

    Filesize

    4KB

  • memory/3228-134-0x00000000058B0000-0x00000000058B1000-memory.dmp

    Filesize

    4KB

  • memory/3228-137-0x0000000004BC0000-0x00000000050BE000-memory.dmp

    Filesize

    5.0MB