Analysis

  • max time kernel
    91s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/02/2023, 14:18

General

  • Target

    shipping document.exe

  • Size

    562KB

  • MD5

    303efa74e4e9cf4a07a685d45b62b2a8

  • SHA1

    43b21136f103e62f2af9745d3ffaec9883a52b66

  • SHA256

    7878c151e7275b02792479eb673f4406f15aca3242e4b525ddecda93c06ea312

  • SHA512

    b95109a37d83c735e20a37dbecfb3aba712f0e2460c329c7db9cc28b884ad37af5b2e42ff5beb6afe5798440cbd6108c85cf8d4890c06140f4c80dfa2976eda9

  • SSDEEP

    12288:raFFZ6wajEsd1U+WvDeToTopNGpR6bxRXO/5TiTm4HoFzLj:g61jEsvSYoT8w6bx1O/BiTjozL

Malware Config

Extracted

Family

agenttesla

Credentials

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
  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\shipping document.exe
    "C:\Users\Admin\AppData\Local\Temp\shipping document.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1852
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\shipping document.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:644
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\CyWJwnu.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3732
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CyWJwnu" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6E79.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2924
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:3656

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    2KB

    MD5

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    18KB

    MD5

    0b4799564f9a0675993ad8b355000cfd

    SHA1

    2ddcd80398241ae1ac5ba3cdfe4b1b7f0024d0cb

    SHA256

    4c8b8fdb718f131c8561e301745b79a586dbfe5ee3ae88b84f7ef10c422fd31b

    SHA512

    86a041115bc0809cf303f09131720aae87d1f00950fa6f0832d6765dd86d877936972af4f0a2d39c57a2db343117d7c4c2ff25c8fd7452d932fd4cfb1b19b5fd

  • C:\Users\Admin\AppData\Local\Temp\tmp6E79.tmp

    Filesize

    1KB

    MD5

    9bae7126d2b3ba6355f8805a8f6b4b9f

    SHA1

    8cc6eb09c2d1b5f6238d230e63f290a11310c0b4

    SHA256

    e72ab582691e9fb417b651f89875f38e42ca14e65fa787d00ad7675c6ca8a2f1

    SHA512

    1914eb359f25134e847837903620fed6d44449ab0a4417b5bfa3fa8fd09b95d0630a7db9d293e5f6a3ca42d7616fb57139adbc363579b1910902da8d72a9b04c

  • memory/644-148-0x00000000067A0000-0x00000000067BE000-memory.dmp

    Filesize

    120KB

  • memory/644-145-0x0000000006120000-0x0000000006186000-memory.dmp

    Filesize

    408KB

  • memory/644-150-0x00000000713C0000-0x000000007140C000-memory.dmp

    Filesize

    304KB

  • memory/644-153-0x00000000080F0000-0x000000000876A000-memory.dmp

    Filesize

    6.5MB

  • memory/644-140-0x00000000051E0000-0x0000000005216000-memory.dmp

    Filesize

    216KB

  • memory/644-157-0x0000000007CE0000-0x0000000007CEE000-memory.dmp

    Filesize

    56KB

  • memory/644-158-0x0000000007DF0000-0x0000000007E0A000-memory.dmp

    Filesize

    104KB

  • memory/644-151-0x0000000007700000-0x000000000771E000-memory.dmp

    Filesize

    120KB

  • memory/644-156-0x0000000007D30000-0x0000000007DC6000-memory.dmp

    Filesize

    600KB

  • memory/1852-133-0x0000000005870000-0x0000000005E14000-memory.dmp

    Filesize

    5.6MB

  • memory/1852-132-0x00000000007B0000-0x0000000000842000-memory.dmp

    Filesize

    584KB

  • memory/1852-136-0x0000000009030000-0x00000000090CC000-memory.dmp

    Filesize

    624KB

  • memory/1852-134-0x00000000052C0000-0x0000000005352000-memory.dmp

    Filesize

    584KB

  • memory/1852-135-0x0000000005390000-0x000000000539A000-memory.dmp

    Filesize

    40KB

  • memory/3656-147-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/3656-162-0x0000000006E50000-0x0000000006EA0000-memory.dmp

    Filesize

    320KB

  • memory/3656-163-0x0000000007070000-0x0000000007232000-memory.dmp

    Filesize

    1.8MB

  • memory/3732-143-0x00000000059E0000-0x0000000005A02000-memory.dmp

    Filesize

    136KB

  • memory/3732-155-0x0000000007C30000-0x0000000007C3A000-memory.dmp

    Filesize

    40KB

  • memory/3732-152-0x00000000713C0000-0x000000007140C000-memory.dmp

    Filesize

    304KB

  • memory/3732-149-0x0000000006E80000-0x0000000006EB2000-memory.dmp

    Filesize

    200KB

  • memory/3732-159-0x0000000007EE0000-0x0000000007EE8000-memory.dmp

    Filesize

    32KB

  • memory/3732-154-0x0000000007BC0000-0x0000000007BDA000-memory.dmp

    Filesize

    104KB

  • memory/3732-144-0x00000000061B0000-0x0000000006216000-memory.dmp

    Filesize

    408KB

  • memory/3732-141-0x0000000005B10000-0x0000000006138000-memory.dmp

    Filesize

    6.2MB