Analysis

  • max time kernel
    133s
  • max time network
    123s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    19-10-2021 15:51

General

  • Target

    88ef9621b800849bb2916f4d6654de32.exe

  • Size

    816KB

  • MD5

    88ef9621b800849bb2916f4d6654de32

  • SHA1

    5b488137ea06640c1895286ccf4994b65334ae8f

  • SHA256

    28fc5135ea1f14ea296184a3e518908ae77d88f100efa162bf30c046790197a3

  • SHA512

    50dc29078db22d56925ea89a06cc1c13419854457b5a3a38327cf58bee81f49cc9d19fdc9725e8051b6bb6ca10d070ae2123f759135e2be49c6260cc405f54b5

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.everywhere-gtt.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    chidiebere1994

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Obfuscated with Agile.Net obfuscator 1 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • 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 4 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\88ef9621b800849bb2916f4d6654de32.exe
    "C:\Users\Admin\AppData\Local\Temp\88ef9621b800849bb2916f4d6654de32.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1380
    • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
      "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
      2⤵
      • Drops file in Drivers directory
      • Executes dropped EXE
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2812

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/1380-124-0x00000000067E0000-0x00000000067E1000-memory.dmp

    Filesize

    4KB

  • memory/1380-127-0x0000000009940000-0x0000000009941000-memory.dmp

    Filesize

    4KB

  • memory/1380-120-0x0000000005C10000-0x0000000005C11000-memory.dmp

    Filesize

    4KB

  • memory/1380-121-0x0000000005CD0000-0x0000000005CD1000-memory.dmp

    Filesize

    4KB

  • memory/1380-122-0x0000000006780000-0x00000000067A1000-memory.dmp

    Filesize

    132KB

  • memory/1380-123-0x0000000006820000-0x0000000006821000-memory.dmp

    Filesize

    4KB

  • memory/1380-115-0x00000000008D0000-0x00000000008D1000-memory.dmp

    Filesize

    4KB

  • memory/1380-125-0x0000000005CD1000-0x0000000005CD2000-memory.dmp

    Filesize

    4KB

  • memory/1380-126-0x0000000007330000-0x000000000733B000-memory.dmp

    Filesize

    44KB

  • memory/1380-119-0x00000000052F0000-0x00000000052F1000-memory.dmp

    Filesize

    4KB

  • memory/1380-117-0x0000000005670000-0x0000000005671000-memory.dmp

    Filesize

    4KB

  • memory/1380-118-0x0000000005250000-0x0000000005251000-memory.dmp

    Filesize

    4KB

  • memory/2812-129-0x000000000043771E-mapping.dmp

  • memory/2812-128-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/2812-136-0x0000000004870000-0x0000000004871000-memory.dmp

    Filesize

    4KB

  • memory/2812-137-0x0000000004DA0000-0x0000000004DA1000-memory.dmp

    Filesize

    4KB

  • memory/2812-140-0x0000000000680000-0x0000000000681000-memory.dmp

    Filesize

    4KB