Analysis

  • max time kernel
    112s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/04/2023, 12:02

General

  • Target

    z0Transferslip.exe

  • Size

    692KB

  • MD5

    523420934008337bc65cd0ee6a40adbf

  • SHA1

    6e21b99481d21aab127e702a7b6a4582255ed18e

  • SHA256

    8bdb93748c95f7288c8e062db2c2ebff27e89c6e0f031f1c527016d5140f37b2

  • SHA512

    098fdae6e0265663ff49b30f3685a509bd997207bb818f6d4f837b4ec7a6e02c65d7286500e8ecdde9bf0fa167e4b3be6ff1173bdc479c49fff1af6cc2f19264

  • SSDEEP

    12288:ntwI0pW48+hNknKT7GJejOtysczjLdhys//HzrgML3OEfKvajdC8Qi5fliadEIP1:9617GJrYvXLdhys3TrgMrOEff5C8Qi5L

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot6192832133:AAF7C5Hu2cAny_oozlOAGw_7DWfvYVumEbE/

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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 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 1 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\z0Transferslip.exe
    "C:\Users\Admin\AppData\Local\Temp\z0Transferslip.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1200
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\XizZqQpvSyj" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF8BC.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3544
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2772

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpF8BC.tmp

    Filesize

    1KB

    MD5

    ef354e22f0d4717337892706f21c82b0

    SHA1

    d64adb21d2999ce0400e5192ba3f9713c92aaf9b

    SHA256

    4b79c734ba3de5274a7b18a194d8cd6e5e38b89b6295cc7199cd57ca441436bd

    SHA512

    fe37a0fca5f3541d5c885fcf6410d4ca8caf6ea8533a0c28ac5a2c715a44adcadade88165805c5b515142d36cb0ffd9c7d65e91b7faa798de0679a305906efa1

  • memory/1200-139-0x0000000005710000-0x0000000005720000-memory.dmp

    Filesize

    64KB

  • memory/1200-135-0x00000000057A0000-0x0000000005832000-memory.dmp

    Filesize

    584KB

  • memory/1200-136-0x0000000005840000-0x00000000058DC000-memory.dmp

    Filesize

    624KB

  • memory/1200-137-0x0000000005730000-0x000000000573A000-memory.dmp

    Filesize

    40KB

  • memory/1200-138-0x0000000005710000-0x0000000005720000-memory.dmp

    Filesize

    64KB

  • memory/1200-133-0x0000000000CC0000-0x0000000000D72000-memory.dmp

    Filesize

    712KB

  • memory/1200-134-0x0000000005D50000-0x00000000062F4000-memory.dmp

    Filesize

    5.6MB

  • memory/2772-143-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/2772-145-0x00000000054F0000-0x0000000005556000-memory.dmp

    Filesize

    408KB

  • memory/2772-146-0x00000000054E0000-0x00000000054F0000-memory.dmp

    Filesize

    64KB

  • memory/2772-148-0x0000000006800000-0x0000000006850000-memory.dmp

    Filesize

    320KB

  • memory/2772-149-0x0000000006A40000-0x0000000006C02000-memory.dmp

    Filesize

    1.8MB

  • memory/2772-150-0x00000000054E0000-0x00000000054F0000-memory.dmp

    Filesize

    64KB