Analysis

  • max time kernel
    144s
  • max time network
    167s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 14:41

General

  • Target

    FA369852.exe

  • Size

    753KB

  • MD5

    fe95779f01c2cf063ca96f9227c079c7

  • SHA1

    3ed0e9d3472f191d2aace68d6c0f75149228ff3b

  • SHA256

    6497c358f05eae2afbb8535f92a187cb27293fb583017c19bd495f838d7b2d26

  • SHA512

    dff6c1baf63d3a180d60c0dfc22619b31dc884f4a9a88d501041d92f6b65794f478fb432452f8064264f9a8f73cbebe257c9d65c3e08f62c3b9d3b734f7e6479

  • SSDEEP

    12288:gigDGkBZwgwhUpJQN1kw9zb5GB4XXo713JEI5M/:I3BZwg0Nx9z1LHo8

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://192.3.223.202
  • Port:
    21
  • Username:
    ftplogs
  • Password:
    sPkZ7jK7P6aA

Signatures

  • AgentTesla

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

  • 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 2 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 8 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\FA369852.exe
    "C:\Users\Admin\AppData\Local\Temp\FA369852.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:516
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\OpuIXgmfRjsi.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4016
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OpuIXgmfRjsi" /XML "C:\Users\Admin\AppData\Local\Temp\tmp690A.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4936
    • C:\Users\Admin\AppData\Local\Temp\FA369852.exe
      "C:\Users\Admin\AppData\Local\Temp\FA369852.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:4416

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\FA369852.exe.log

    Filesize

    1KB

    MD5

    27b2fec2a6283b09ef15bd709cb96c3d

    SHA1

    728585dd6390edf7806524dcf4bf18139632a001

    SHA256

    451a266b23424f3075e68b990cb90c7c177d48a64688c39ee77a4e9e239cf311

    SHA512

    bb10e90a881b259b1b90e54a1451f660c96e900576000a294cd1311ac5a6d3b3567cc7ad169ed26ff38719d65462ad31b2247e0f80118dd693f45927255de50b

  • C:\Users\Admin\AppData\Local\Temp\tmp690A.tmp

    Filesize

    1KB

    MD5

    bd49a588620d1041f31209b00e113b13

    SHA1

    44503b604a7137795260e8443dd8b3fdd05ec7c2

    SHA256

    63fa4b59139aa34925091ba9de7ec54e2bee9b573eb3611d854aecc6cb9fc07d

    SHA512

    09a656fbabcce5e837fca2c68bc8bd544197e075f5bd0597aa30614b6861d10c345317eca328109b77ded7148af16a041f302396796c1d94e74e77a126746cf3

  • memory/516-133-0x0000000005E30000-0x00000000063D4000-memory.dmp

    Filesize

    5.6MB

  • memory/516-134-0x0000000005880000-0x0000000005912000-memory.dmp

    Filesize

    584KB

  • memory/516-135-0x0000000005800000-0x000000000580A000-memory.dmp

    Filesize

    40KB

  • memory/516-136-0x0000000009800000-0x000000000989C000-memory.dmp

    Filesize

    624KB

  • memory/516-132-0x0000000000D90000-0x0000000000E52000-memory.dmp

    Filesize

    776KB

  • memory/4016-146-0x0000000005AA0000-0x0000000005B06000-memory.dmp

    Filesize

    408KB

  • memory/4016-150-0x0000000071860000-0x00000000718AC000-memory.dmp

    Filesize

    304KB

  • memory/4016-141-0x0000000005280000-0x00000000058A8000-memory.dmp

    Filesize

    6.2MB

  • memory/4016-159-0x00000000076D0000-0x00000000076D8000-memory.dmp

    Filesize

    32KB

  • memory/4016-157-0x0000000007810000-0x000000000782A000-memory.dmp

    Filesize

    104KB

  • memory/4016-156-0x00000000076E0000-0x00000000076EE000-memory.dmp

    Filesize

    56KB

  • memory/4016-145-0x00000000050C0000-0x00000000050E2000-memory.dmp

    Filesize

    136KB

  • memory/4016-137-0x0000000000000000-mapping.dmp

  • memory/4016-147-0x0000000005B10000-0x0000000005B76000-memory.dmp

    Filesize

    408KB

  • memory/4016-148-0x00000000061A0000-0x00000000061BE000-memory.dmp

    Filesize

    120KB

  • memory/4016-149-0x0000000007350000-0x0000000007382000-memory.dmp

    Filesize

    200KB

  • memory/4016-139-0x0000000004BC0000-0x0000000004BF6000-memory.dmp

    Filesize

    216KB

  • memory/4016-151-0x0000000006750000-0x000000000676E000-memory.dmp

    Filesize

    120KB

  • memory/4016-152-0x0000000007AF0000-0x000000000816A000-memory.dmp

    Filesize

    6.5MB

  • memory/4016-153-0x00000000074A0000-0x00000000074BA000-memory.dmp

    Filesize

    104KB

  • memory/4016-154-0x0000000007510000-0x000000000751A000-memory.dmp

    Filesize

    40KB

  • memory/4016-155-0x0000000007730000-0x00000000077C6000-memory.dmp

    Filesize

    600KB

  • memory/4416-143-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/4416-158-0x00000000069B0000-0x0000000006A00000-memory.dmp

    Filesize

    320KB

  • memory/4416-142-0x0000000000000000-mapping.dmp

  • memory/4936-138-0x0000000000000000-mapping.dmp