Analysis

  • max time kernel
    145s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 02:08

General

  • Target

    HOUSE_PI.exe

  • Size

    892KB

  • MD5

    5bdf485867aa3d87b494be177e7c98da

  • SHA1

    3201fd68704cfa89e9f32f807cb1cdf4bf39bc45

  • SHA256

    ba99ebdbb38769a5fce130e0a16cd0c2aa0380cfc4ec5dd257dcadcdcea69ee4

  • SHA512

    214e0b6a6d95243587e6df856095180d9d475536d2a01b52573f389a38d1659c94747a51cae51c7748e19d7455549efac0f3c4efcb82a51d09687b2273621f42

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.ru
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    cruizjamesvhjkl@

Signatures

  • AgentTesla

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

  • AgentTesla Payload 1 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
  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\HOUSE_PI.exe
    "C:\Users\Admin\AppData\Local\Temp\HOUSE_PI.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3620
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YSyeaKfvcL" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDDDD.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4356
    • C:\Users\Admin\AppData\Local\Temp\HOUSE_PI.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:4536

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    507B

    MD5

    ab4c71d3ff6255edd4e5c1e09540f49e

    SHA1

    22e06bf4e258741b5df918061871cba998c50cea

    SHA256

    1690fec628f775dd3c3385b800eed126b37978ef2ffd592b024052724caafb5a

    SHA512

    8fa7d0045796e6cda7c28e2b9a690ef550619828c1b5d0ebf8e8367aff4bf4d9f63121e5b4f199d30cb8006eb584c6767f4c59150749b8256dab9dd0ebd9f1af

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

    Filesize

    1KB

    MD5

    bab8595d9ee106c4e3b662db25a812bb

    SHA1

    b1fb078abff92d0af135bd8a5723dabdcf27c99a

    SHA256

    e2794ba020a028cedbee67fb2b5d88f4b73e395d952059c6c58b2945756fe9f1

    SHA512

    ae5ff440ec99375f5e4be9b7e690ea7c5e673f2e9a20efeb594bb8fd0e8a4163e1291509c66a004e0f22ac79e34b1102b11c24c0ee4109aeb5875ba791b3e5bb

  • memory/3620-130-0x0000000000750000-0x0000000000836000-memory.dmp

    Filesize

    920KB

  • memory/3620-131-0x0000000007570000-0x000000000760C000-memory.dmp

    Filesize

    624KB

  • memory/3620-132-0x0000000007610000-0x00000000076A2000-memory.dmp

    Filesize

    584KB

  • memory/3620-133-0x00000000081A0000-0x0000000008744000-memory.dmp

    Filesize

    5.6MB

  • memory/4356-134-0x0000000000000000-mapping.dmp

  • memory/4536-136-0x0000000000000000-mapping.dmp

  • memory/4536-137-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/4536-139-0x00000000063F0000-0x0000000006456000-memory.dmp

    Filesize

    408KB

  • memory/4536-140-0x00000000067E0000-0x0000000006830000-memory.dmp

    Filesize

    320KB