Analysis

  • max time kernel
    118s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    26-01-2024 13:45

General

  • Target

    SecuriteInfo.com.W32.MSIL_Kryptik.IYD.gen.Eldorado.20371.19827.exe

  • Size

    724KB

  • MD5

    fb3a881fa28d196bcbd22d534e772bd0

  • SHA1

    1aa77a83c10996d031532ec60a710d718cacb3e2

  • SHA256

    dd00caf5d7f9bf6c5286c276edcbf1ab721a439345867a1b42a318b923c34314

  • SHA512

    4f72a7b930f69dbf9ca0f19d1be1db9f3bba1e48197b79ab9bee01c67ca2bc2b7712956f8ae5d6e72cd147dde897cac6e17d8ffb971462806a4d7a6682b7c003

  • SSDEEP

    12288:Y89ujjU3YRggy3cMnjNB10XZBzoTrgeJbKvcDkJntVOb6dNTPRtSK1SuXfKmsDW2:Y8AjjJRFys4NH03cTEeokDkJntVO4T

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 3 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).

  • 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 use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.MSIL_Kryptik.IYD.gen.Eldorado.20371.19827.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.MSIL_Kryptik.IYD.gen.Eldorado.20371.19827.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2476
    • 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\SecuriteInfo.com.W32.MSIL_Kryptik.IYD.gen.Eldorado.20371.19827.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2752
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\NwFdyRO.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2672
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\NwFdyRO" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8C29.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2548
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2556

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp8C29.tmp

    Filesize

    1KB

    MD5

    4453b482ee919697967823dba3ab68ab

    SHA1

    2f16ddbbae7544e69be43b09c34d8ce1831d4848

    SHA256

    47630c45f0c4e4c05a24923fe311791514c9152841ce4b202c8488c73dbb2b66

    SHA512

    20c21e3fd683612210bb4418eed4aadf8a094fbad89b58fc2fc3c04c845c93ebf000a1e8a88166e497a06b9ebd4ee74a9eae7e16747c6c80e1b1eccda16ce325

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    432040b3deb794e36585e83ef1974e2d

    SHA1

    9dc638dd5360668f1db61d8413114bd2c354e67a

    SHA256

    af8d205f11dfb328893a7473b70613f0106439611fb7f9906310287ffb6aa80a

    SHA512

    030b8b8e514136ccb860a6cb06c01444ca0a44e22d6facbfc3cde419f7a49f252f65f6654a7a4687c1ed543e691d81b5fb33d6118f1c214c1ec72f17ceb58a9f

  • memory/2476-31-0x00000000740C0000-0x00000000747AE000-memory.dmp

    Filesize

    6.9MB

  • memory/2476-4-0x00000000004A0000-0x00000000004A8000-memory.dmp

    Filesize

    32KB

  • memory/2476-0-0x0000000000EC0000-0x0000000000F7C000-memory.dmp

    Filesize

    752KB

  • memory/2476-5-0x00000000004B0000-0x00000000004BC000-memory.dmp

    Filesize

    48KB

  • memory/2476-6-0x00000000072B0000-0x000000000732C000-memory.dmp

    Filesize

    496KB

  • memory/2476-2-0x0000000007170000-0x00000000071B0000-memory.dmp

    Filesize

    256KB

  • memory/2476-1-0x00000000740C0000-0x00000000747AE000-memory.dmp

    Filesize

    6.9MB

  • memory/2476-19-0x00000000740C0000-0x00000000747AE000-memory.dmp

    Filesize

    6.9MB

  • memory/2476-3-0x0000000000410000-0x0000000000428000-memory.dmp

    Filesize

    96KB

  • memory/2556-45-0x00000000740C0000-0x00000000747AE000-memory.dmp

    Filesize

    6.9MB

  • memory/2556-26-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2556-25-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

    Filesize

    4KB

  • memory/2556-23-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2556-22-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2556-28-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2556-21-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2556-30-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2556-40-0x0000000004900000-0x0000000004940000-memory.dmp

    Filesize

    256KB

  • memory/2556-38-0x00000000740C0000-0x00000000747AE000-memory.dmp

    Filesize

    6.9MB

  • memory/2556-20-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2672-36-0x000000006EE20000-0x000000006F3CB000-memory.dmp

    Filesize

    5.7MB

  • memory/2672-34-0x00000000025F0000-0x0000000002630000-memory.dmp

    Filesize

    256KB

  • memory/2672-41-0x00000000025F0000-0x0000000002630000-memory.dmp

    Filesize

    256KB

  • memory/2672-44-0x000000006EE20000-0x000000006F3CB000-memory.dmp

    Filesize

    5.7MB

  • memory/2672-32-0x000000006EE20000-0x000000006F3CB000-memory.dmp

    Filesize

    5.7MB

  • memory/2752-37-0x000000006EE20000-0x000000006F3CB000-memory.dmp

    Filesize

    5.7MB

  • memory/2752-35-0x0000000002350000-0x0000000002390000-memory.dmp

    Filesize

    256KB

  • memory/2752-42-0x0000000002350000-0x0000000002390000-memory.dmp

    Filesize

    256KB

  • memory/2752-33-0x000000006EE20000-0x000000006F3CB000-memory.dmp

    Filesize

    5.7MB

  • memory/2752-39-0x0000000002350000-0x0000000002390000-memory.dmp

    Filesize

    256KB

  • memory/2752-43-0x000000006EE20000-0x000000006F3CB000-memory.dmp

    Filesize

    5.7MB